Electric tool and snow sweeper

Abstract

Disclosed in the present application is an electric tool. The electric tool comprises: a power assembly; a first operating member and a second operating member, which execute different functions; and a control apparatus, which is connected to the first operating member and the second operating member. The control apparatus is configured to: in a first operating mode, when the operating members are both in a triggered state, control the execution or allowed execution of a first function and a second function; when the second operating member is released and the first operating member is continuously in the triggered state, control the first function and the second function to maintain an executed or execution-allowed state; after switching to a second operating mode, when the operating members are both in the triggered state, control the execution or allowed execution of the first function and the second function; and when the first operating member is released and the second operating member is continuously in the triggered state, control the first function and the second function to maintain the executed or execution-allowed state. Therefore, different usage habits of left-handed users and right-handed users are satisfied.

Description

Electric power tool and snow blower

[0001] This application claims priority to Chinese patent application No. 202411291094.2, filed on September 14, 2024, and No. 202411869475.4, filed on December 17, 2024, with the Chinese Patent Office, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to an electric power tool, in particular to a rear-walking working machine and a snow blower. BACKGROUND

[0003] With the continuous progress of society, outdoor work is increasingly commonly completed by various outdoor power equipment. As outdoor power equipment, snow blowers are widely used for snow removal. When it snows, snow blowers are used to clean the accumulated snow on the ground such as sidewalks, driveways, road surfaces, etc. in outdoor environments. When the snow blower is in use, the user often needs to hold the handle with both hands to push and control the movement direction of the snow blower. At the same time, while pushing the snow blower to run, the user also needs to adjust the snow shoveling speed, snow throwing direction, snow blower walking speed, etc.

[0004] A snow blower in the related art has left and right handles for the user to hold with both hands, and a self-walking trigger and a snow blowing trigger are respectively arranged on the left handle and the right handle. When the left hand presses the self-walking trigger and the right hand presses the snow blowing trigger, the self-walking function and the snow blowing function of the snow blower are both activated. After this operation, if the snow blowing trigger of the right hand is released and only the self-walking trigger of the left hand is maintained in the triggered state, the self-walking function and the snow blowing function of the snow blower are maintained in the activated state. In this way, the right hand of the user can be released to operate other function keys. However, the applicant finds that the snow blower in the related art only provides a way for the user to hold and operate the self-walking trigger and the snow blowing trigger with a fixed left or right hand, which cannot meet the operation preferences of left-handed and right-handed people at the same time.

[0005] In addition to snow blowers, rear-walking working machines that perform other functions, such as lawn mowers and pushable rear-walking working machines, also have the above-mentioned user needs.

[0006] This section provides background information related to the present application, which may or may not be prior art. SUMMARY

[0007] It is an object of the present application to solve or at least alleviate some or all of the above problems. To this end, it is an object of the present application to provide a snow blower.

[0008] To achieve the above object, the present application adopts the following technical solution:

[0009] An electric power tool, comprising: a power assembly comprising at least one motor; a first operation member and a second operation member for a user to operate to control the electric power tool to perform different functions; an execution mechanism driven by the power assembly to perform the different functions; a control device connected to the first operation member and the second operation member, the control device being configured to: in a first working mode, when only the first operation member is triggered, control a first function to be performed or allowed to be performed, when only the second operation member is triggered, control a second function to be performed or allowed to be performed; when it is detected that both the first operation member and the second operation member are in a triggered state, control the first function and the second function to be performed or allowed to be performed; and when the first operation member is released and the second operation member continues to be in the triggered state, control the first function and the second function to remain in a state of being performed or allowed to be performed; when the electric power tool is switched from the first working mode to a second working mode, when it is detected that both the first operation member and the second operation member are in the triggered state, control the first function and the second function to be performed or allowed to be performed; and when the first operation member is released and the second operation member continues to be in the triggered state, control the first function and the second function to remain in a state of being performed or allowed to be performed.

[0010] In an embodiment, further comprising a handle assembly for a user to hold to adjust a moving direction of the electric power tool, the first operation member and the second operation member are disposed on the handle assembly.

[0011] In an embodiment, further comprising a control area, the control area comprising a first control area and a second control area, the first operation member is disposed in the first control area, and the second operation member is disposed in the second control area, the first control area is for a user to operate in the first control area without the left hand leaving the handle assembly, and the second control area is for a user to operate in the second control area without the right hand leaving the handle assembly.

[0012] In an embodiment, further comprising a third operation member, the third operation member is configured to adjust the electric power tool to switch between the first working mode and the second working mode.

[0013] In an embodiment, the control device is configured to, in the second working mode, when only the first operation member is triggered, control the first function to be performed or allowed to be performed, and when only the second operation member is triggered, control the second function to be performed or allowed to be performed.

[0014] In an embodiment, the control device is configured to, in the second working mode, when only the first operation member is triggered, control the second function to be performed or allowed to be performed, and when only the second operation member is triggered, control the first function to be performed or allowed to be performed.

[0015] In an embodiment, the control device comprises a first control device, a second control device and a third control device, the power assembly comprises a first motor and a second motor; the first control device is connected to the first motor and controls whether a first function is executed or allowed to be executed; the second control device is connected to the second motor and controls whether a second function is executed or allowed to be executed; the third control device is connected to the first operating member and the second operating member.

[0016] In an embodiment, the power assembly further comprises a walking assembly for supporting the electric power tool to walk, the first function is a self-walking function.

[0017] In an embodiment, the electric power tool is a walking-behind working machine, the walking-behind working machine comprises a handle assembly for adjusting a walking direction, the handle assembly comprises a first handle and a second handle for a user to hold with two hands respectively, the first operating member is arranged on the first handle, and the second operating member is arranged on the second handle.

[0018] In an embodiment, the handle assembly has a center split surface, and the handle assembly is left-right symmetrical relative to the center split surface.

[0019] In an embodiment, the electric power tool is a snow blower.

[0020] In an embodiment, the first handle comprises a single-hand control area, the single-hand control area comprises at least one control, the control is operable by a user to control a functional characteristic of the snow blower, and the functional characteristic can include a rotation speed of a snow sweeping shaft of a snow sweeping assembly, a walking speed or a walking direction of a walking assembly, a snow throwing direction or a snow throwing speed of a snow throwing assembly, etc.

[0021] In an embodiment, the control comprises a first control, and the power assembly comprises a first motor for driving movement of the walking assembly, the first control is used to adjust a running state of the first motor.

[0022] In an embodiment, the control further comprises a second control, and the power assembly further comprises a third motor for driving movement of the snow throwing assembly, the second control is used to control a state of the third motor.

[0023] In an embodiment, the first handle and the second handle each have a holding center, the holding center refers to a geometric center of a holding area that can be held by a user when a hand is held on the first handle or the second handle; at least part of at least one of the first control and the second control is located within a spherical region with the holding center P as a spherical center and R as a radius, the radius R is greater than or equal to 120 mm and less than or equal to 180 mm.

[0024] The snow sweeper comprises a walking assembly for supporting the snow sweeper to walk, a snow sweeping assembly comprising a snow sweeping paddle rotatable around a rotating shaft, a snow throwing assembly comprising a snow throwing cylinder for realizing a snow throwing function, a snow throwing direction of the snow throwing cylinder being adjustable, a power assembly comprising at least one motor, the power assembly being used for driving at least one of the walking assembly, the snow sweeping assembly and the snow throwing assembly to work, a first operation member and a second operation member for being operated by a user to control the snow sweeper to perform different functions, and a control device configured to: in a first working mode, when only the first operation member is triggered, control a first function to be performed or allowed to be performed, when only the second operation member is triggered, control a second function to be performed or allowed to be performed, when it is detected that both the first operation member and the second operation member are in a triggered state, control the first function and the second function to be performed or allowed to be performed, and when the second operation member is released and the first operation member continuously is in the triggered state, control the first function and the second function to keep a state of being performed or allowed to be performed; when the snow sweeper is switched from the first working mode to a second working mode, when it is detected that both the first operation member and the second operation member are in the triggered state, control the first function and the second function to be performed or allowed to be performed, and when the first operation member is released and the second operation member continuously is in the triggered state, control the first function and the second function to keep the state of being performed or allowed to be performed.

[0025] In an embodiment, the snow sweeper further comprises a handle assembly for being held by the user to adjust a moving direction of the snow sweeper, the first operation member and the second operation member are arranged on the handle assembly.

[0026] In an embodiment, the snow sweeper further comprises a control area, the control area comprising a first control area and a second control area, the first operation member is arranged in the first control area, and the second operation member is arranged in the second control area, the first control area being used for the user to operate in the first control area without the left hand leaving the handle assembly, and the second control area being used for the user to operate in the second control area without the right hand leaving the handle assembly.

[0027] In an embodiment, the control area further comprises a third operation member arranged to adjust the snow sweeper to switch between the first working mode and the second working mode.

[0028] In an embodiment, the control device is configured to, in the second working mode, when only the first operation member is triggered, control the first function to be performed or allowed to be performed, and when only the second operation member is triggered, control the second function to be performed or allowed to be performed. BRIEF DESCRIPTION OF DRAWINGS

[0029] FIG. 1 is a schematic view of the snow sweeper provided by the present application in one perspective;

[0030] FIG. 2 is a schematic view of the snow sweeper provided by the present application in another perspective;

[0031] Fig. 3 is a schematic view of a handle assembly according to the present application;

[0032] Fig. 4 is a schematic view of a first handle according to the present application;

[0033] Fig. 5 is a schematic view of a second handle according to the present application;

[0034] Fig. 6 is a schematic view of the second handle and the handle housing according to the present application;

[0035] Fig. 7 is a functional schematic view of a power assembly according to the present application;

[0036] Fig. 8 is a connection schematic view of a control device according to the present application;

[0037] Fig. 9 is a schematic view of a power tool according to the present application;

[0038] Fig. 10 is a schematic view of an embodiment of the handle assembly of Fig. 9;

[0039] Fig. 11 is a schematic view of another embodiment of the handle assembly of Fig. 9;

[0040] Fig. 12 is a control scheme of the control device according to the present application in a first operating mode;

[0041] Fig. 13 is a specific control logic diagram of the control device according to the present application in the first operating mode;

[0042] Fig. 14 is a control scheme of the control device according to the present application in a second operating mode;

[0043] Fig. 15 is a control logic diagram of the power tool according to the present application switching from the first operating mode to the second operating mode. DETAILED DESCRIPTION

[0044] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0045] In this application, the terms "comprise", "comprising", "have", "having", "include", "including", "contain", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise, have, include, contain or the like a list of elements are not limited to those elements, but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element defined by an indefinite article "a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0046] In the present application, the term "and / or", is a description of an associated relationship with associated objects, which means that there can be three kinds of relationships. For example, A and / or B, can represent: the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in the present application generally indicates that the front and rear associated objects are in a "and / or" relationship.

[0047] In the present application, the terms "connected", "combined", "coupled", "mounted" can be direct connection, combination, coupling or mounting, or indirect connection, combination, coupling or mounting. Among them, for example, direct connection refers to the connection of two parts or components without the need for an intermediate part, while indirect connection refers to the connection of two parts or components with at least one intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0048] In the present application, those of ordinary skill in the art will understand that the relative terms used in connection with quantities or conditions (for example, "about", "approximately", "substantially" and the like) include the values described and have the meaning indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative term can refer to a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to a certain number of degrees (for example, 1 degree, 5 degrees, 10 degrees or more) added or subtracted from the indicated angle.

[0049] In the present application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0050] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, it is also understood in the context that when referring to an element connected to another element "on" or "under", it can be directly connected to another element "on" or "under", or indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, left below, right below, front below and back below, etc.

[0051] In the present application, the terms "controller", "processor", "central processing unit", "CPU", "MCU" can be interchangeable. When using the unit "controller", "processor", "central processing unit", "CPU" or "MCU" to perform a specific function, unless otherwise specified, these functions can be performed by a single unit or multiple units.

[0052] In the present application, the terms "device", "module" or "unit" can be realized by hardware or software to achieve a specific function.

[0053] In the present application, the terms "calculate", "judge", "control", "determine", "identify" and the like refer to the operation and process of a computer system or similar electronic computing device (for example, controller, processor, etc.).

[0054] The present application provides an electric tool 300 (see FIGS. 9-11), which can be driven by a motor to perform different first and second functions. The electric tool 300 includes a power assembly 110 including at least one motor and an execution mechanism 310 driven by the power assembly 110 to perform the first and second functions. The electric tool 300 further includes a first operating member 301 and a second operating member 302 for a user to operate to control the execution of the first and second functions of the electric tool 300. The electric tool 300 further includes a control device 200 connected to the first operating member 301 and the second operating member 302.

[0055] The present application provides a rear walking working machine that can be pushed by a user to walk. The rear walking working machine is also a type of electric power tool 300, and includes all the features described above for the electric power tool 300. Different from the electric power tool 300, the rear walking working machine further includes a walking assembly 130 for causing the rear walking working machine to move in position. The power assembly 110 can drive the walking assembly 130, and can also drive the rear walking working machine to perform other work items. The first function is the self-walking function, and the second function is the other work function.

[0056] The snow blower 100 is a rear walking working machine that can be pushed by a user to walk and perform a snow blowing function. The snow blower 100 involved in the present application also belongs to a type of electric power tool 300 described above, and the first function is the self-walking function and the second function is the snow blowing function. Both the self-walking function and the snow blowing function are driven by a motor, and the power assembly 110 can include one or more motors. That is, the first function and the second function can be driven by the same motor, or can be driven by two different motors respectively.

[0057] The technical solutions of the present application will be described in detail below taking the snow blower 100 as an example. As shown in FIGS. 1 to 8, the snow blower 100 includes a power assembly 110, a snow blowing assembly 120, a walking assembly 130, a handle assembly 140, a snow throwing assembly 150, a power supply device 160, and a housing 170.

[0058] The power supply device 160 can be a direct current power supply or an alternating current power supply, and the power supply device 160 can include one or more battery packs that are detachably connected to the snow blower 100. The power supply device 160 can also include a solar panel or other energy supply modes.

[0059] The walking assembly 130 can be a walking wheel that can rotate relative to the ground when the snow blower 100 is placed on the ground, so that the snow blower 100 walks on the ground. In other words, the walking assembly 130 can rotate relative to the housing 170 to make the snow blower 100 walk on the ground. The walking assembly 130 performs the first function of the snow blower 100, i.e., the self-walking function. The self-walking function means that the walking assembly 130 can walk when the user slightly pushes or only controls the running direction. The walking assembly 130 includes a first walking assembly 131 and a second walking assembly 132, which are respectively arranged on the left and right sides and are both located below the handle assembly 140. In other embodiments, the number of rotatable walking members in the walking assembly 130 can be one, two, three, or four. As another embodiment of the walking assembly 130, a track can be used instead of the walking wheel to enable the snow blower 100 to walk on the ground. The walking assembly 130 involved in the present application does not necessarily have to be a walking wheel, but can also be a track or other structure that can cause the electric power tool 300 to move in position.

[0060] The snow sweeping assembly 120 comprises a snow sweeping paddle 121 and a snow throwing paddle (not shown). The housing 170 houses or fixes the power assembly 110, and houses at least part of the snow sweeping paddle 121 and the snow throwing paddle. The snow sweeping assembly 120 is a functional assembly of the snow sweeper 100. The snow sweeping assembly 120 performs the second function of the snow sweeper 100, i.e. the snow sweeping function. The snow sweeping paddle 121 has a snow sweeping rotation shaft 1211 extending along the first axis 101, and the power assembly 110 drives the snow sweeping paddle 121 to rotate around the snow sweeping rotation shaft 1211 to realize the snow sweeping function. After the snow sweeping paddle 121 sweeps the snow into the housing 170, the snow throwing paddle rotates and throws the snow away by centrifugal force.

[0061] The snow throwing assembly 150 is used to change the trajectory of the snow and throw the snow away, or in other words, the snow throwing assembly 150 is used to guide the snow throwing direction of the snow sweeper 100. The snow throwing assembly 150 comprises a snow throwing cylinder 151 for realizing the snow throwing function, and the snow throwing direction of the snow throwing cylinder 151 is adjustable. In the snow sweeper 100, the snow throwing assembly 150 performs the third function of the snow sweeper 100, i.e. the snow throwing function. The snow throwing assembly 150 is arranged on the housing 170. The housing 170, the snow sweeping assembly 120, the snow throwing assembly 150 and the power assembly 110 constitute the main machine of the snow sweeper 100. The snow throwing handle 145 for adjusting the snow throwing direction of the snow throwing cylinder 151 is arranged on the handle assembly 140. When the user moves the snow throwing handle 145, the snow throwing cylinder 151 can adjust the snow throwing direction within its maximum movable range.

[0062] The power assembly 110 can be a motor or an engine driven by electricity. The power assembly 110 comprises at least one motor. The power supply device 160 is electrically connected to the power assembly 110 and provides electricity to the power assembly 110. The power assembly 110 is used to drive at least one of the walking assembly 130, the snow sweeping assembly 120 and the snow throwing assembly 150 to work. The power assembly 110 comprises a first motor 111 for driving the walking assembly 130, a second motor 112 for driving the snow sweeping assembly 120 to move, and a third motor 113 for driving the snow throwing assembly 150 to move. That is, the first motor 111 is used to drive the walking assembly 130 to walk, the second motor is used to drive the snow sweeping rotation shaft 1211 to rotate, and the third motor 113 is used to drive the snow throwing cylinder 151 to rotate. In an embodiment, the first motor 111, the second motor 112 and the third motor 113 are completely different from each other. In an embodiment, two of the first motor 111, the second motor 112 and the third motor 113 are the same motor. In an embodiment, the first motor 111, the second motor 112 and the third motor 113 are completely the same, i.e. the same motor.

[0063] The handle assembly 140 is used to allow a user to guide and control the snow sweeper 100. The handle assembly 140 comprises a first handle 141 and a second handle 142 for the user to hold with both hands respectively, and the first handle 141 and the second handle 142 are used for the user to operate to push the snow sweeper 100 to walk. The first handle 141 is disposed at the left side of the second handle 142, and the first handle 141 is held by the left hand of the user, and the second handle 142 is held by the right hand of the user.

[0064] The handle assembly 140 is rotatably connected to the housing 170, that is, the handle assembly 140 is rotatable relative to the housing 170. The handle assembly 140 further comprises a connecting rod 190 rotatably connected to the housing 170, and the connecting rod 190 comprises a first connecting rod 191 and a second connecting rod 192, and in the embodiment, the first connecting rod 191 is at the left side of the second connecting rod 192, and both of the connecting rods are telescopic.

[0065] The handle assembly 140 comprises a main switch 146 for powering on the snow sweeper 100. The main switch 146 is disposed on the handle connecting portion 149 between the first handle 141 and the second handle 142, and when the main switch 146 is activated, the snow sweeper 100 realizes the power-on function, and the power supply device 160 supplies power to the handle assembly 140 of the snow sweeper 100, so as to further operate other functional components which need power supply to perform their functions.

[0066] The first handle 141 comprises a single-hand control area 180, which is used for the user to operate in the single-hand control area 180 while the hand does not leave the first handle 141. That is, when the left hand of the user holds the first handle 141, the fingers of the left hand can simultaneously operate in the single-hand control area 180 on the first handle 141. Similarly, when the right hand of the user holds the second handle 142, the fingers of the right hand can simultaneously operate in the single-hand control area 180 on the second handle 142.

[0067] It should be noted that the single-hand control area 180 can be disposed on any one of the handles of the handle assembly 140. In an embodiment, the single-hand control area 180 is only disposed on the first handle 141. In an embodiment, the single-hand control area 180 is only disposed on the second handle 142. In an embodiment, the single-hand control area 180 can be disposed on the first handle 141 and the second handle 142 respectively. In the present application, the handle 148 refers to any one of the first handle 141 or the second handle 142.

[0068] The single-hand control region 180 includes at least one control 185 that is operable by the user to regulate a functional characteristic of the snow thrower 100, which can include the speed of the snow thrower 120 auger 1211, the speed or direction of travel of the travel assembly 130, the direction or speed of snow throw of the snow throw assembly 150, whether the main switch is powered on, etc.

[0069] FIGS. 3-6 disclose one specific embodiment of the controls 185.

[0070] The at least one control 185 can include a first control 181 for regulating the state of the first motor 111. In other words, the first control 181 is for regulating the state of the travel assembly 130. In one embodiment, the first control 181 regulates the speed of the travel assembly 130. In one embodiment, the first control 181 regulates the direction of travel of the travel assembly 130, such as straight or turning. In this manner, the user is able to regulate the speed or direction of travel of the travel assembly 130 using the same hand that is used to hold the handle 148 without removing the hand from the handle 148. In the embodiment disclosed in FIGS. 3-6, the user regulates the state of the travel assembly 130 using the left hand without removing the left hand from the first handle 141.

[0071] The at least one control 185 can include a second control 182 for regulating the state of the third motor 113. In other words, the second control 182 is for regulating the state of the snow throw assembly 150. In one embodiment, the second control 182 regulates the direction of snow throw of the snow throw cylinder 151. In one embodiment, the second control 182 regulates the speed of snow throw of the snow throw cylinder 151. In this manner, the user is able to regulate the direction or speed of snow throw of the snow throw cylinder 151 using the same hand that is used to hold the handle 148 without removing the hand from the handle 148. In the embodiment disclosed in FIGS. 3-6, the user regulates the state of the snow throw assembly 150 using the left hand without removing the left hand from the first handle 141.

[0072] The at least one control 185 can include a third control 183 for regulating the state of the second motor 112. In other words, the third control 183 is for regulating the state of the snow throw assembly 120. In one embodiment, the third control 183 regulates the speed of the snow throw auger 1211. In this manner, the user is able to regulate the speed of snow throw of the snow throw auger 1211 using the same hand that is used to hold the handle 148 without removing the hand from the handle 148. In the embodiment disclosed in FIGS. 3-6, the user regulates the state of the snow throw assembly 120 using the right hand without removing the right hand from the second handle 142.

[0073] The at least one control 185 can include a fourth control 184 for controlling the state of the third motor 113. In other words, the fourth control 184 is for controlling the state of the snow throwing assembly 150. In one embodiment, the fourth control 184 controls the snow throwing direction of the snow throwing cylinder 151. In one embodiment, the fourth control 184 controls the snow throwing direction speed of the snow throwing cylinder 151. In this way, the user can adjust the snow throwing direction or the snow throwing speed of the snow throwing cylinder 151 using the same hand that is used to hold the handle 148 without removing the hand from the handle 148. In the embodiment disclosed in FIGS. 3-6, the user uses the right hand to adjust the state of the snow throwing assembly 150 without removing the right hand from the first handle 141.

[0074] As shown in FIG. 3, the handle assembly 140 has a center dividing surface 147. The handle assembly 140 is left-right symmetrical with respect to the center dividing surface 147. The first handle 141 and the second handle 142 are substantially symmetrical with respect to the center dividing surface 147. The first connecting rod 191 and the second connecting rod 192 are substantially symmetrical with respect to the center dividing surface 147. In this embodiment, the single-hand control area 180 on the first handle 141 and the single-hand control area 180 on the second handle 142 are also left-right symmetrical with respect to the center dividing surface 147. The first control 181 and the third control 183 are symmetrical with respect to the center dividing surface 147. The second control 182 and the fourth control 184 are symmetrical with respect to the center dividing surface 147.

[0075] In one embodiment, the single-hand control area 180 on the first handle 141 and the single-hand control area 180 on the second handle 142 are structurally symmetrical with respect to the center dividing surface 147, regardless of whether the controls 185 included in the single-hand control area 180 on the first handle 141 and the single-hand control area 180 on the second handle 142 have the same function or different functions.

[0076] In this embodiment, the first control 181 and the third control 183 are configured as knobs, and the second control 182 and the fourth control 184 are configured as buttons.

[0077] When the first control 181 is moved forward on the top of the outer periphery of the knob and backward on the bottom of the outer periphery of the knob, the walking speed of the walking assembly 130 is increased. When the user rotates the first control 181 in the opposite direction, the walking speed of the walking assembly 130 is decreased. When the third control 183 is moved forward on the top of the outer periphery of the knob and backward on the bottom of the outer periphery of the knob, the snow sweeping speed of the snow sweeping assembly 120 is increased. When the user rotates the third control 183 in the opposite direction, the snow sweeping speed of the snow sweeping assembly 120 is decreased. In other embodiments, the first control 181 and the third control 183 can also be configured as other types of operating members, such as buttons, dials, triggers, etc.

[0078] When the second control 182 is pressed, the snow throwing cylinder 151 rotates from any current position to the leftmost position in which the snow throwing opening faces the leftmost side of the snow thrower 100, i.e. the leftmost snow throwing direction. When the fourth control 184 is pressed, the snow throwing cylinder 151 rotates from any current position to the rightmost position in which the snow throwing opening faces the rightmost side of the snow thrower 100, i.e. the rightmost snow throwing direction. In other embodiments, the second control 182 and the fourth control 184 can also be configured as other forms of operating members, such as knobs, dials, triggers, etc.

[0079] Now the single-hand operating area 180 is described in another way.

[0080] The single-hand operating area 180 includes a first operating area 186 and a second operating area 187, the first operating area 186 is located on the first handle 141, and the second operating area 187 is located on the second handle 142. The first operating area 186 is arranged at the front end of the first handle 141, and the first operating area 186 is configured to be triggered by different operating modes to control the states of the first motor 111 and the third motor 113. At least one control 185 is arranged in the first operating area 186, specifically the first control 181 and the second control 182. The second operating area 187 is arranged at the front end of the second handle 142, and the second operating area 187 is configured to be triggered by different operating modes to control the states of the second motor 112 and the third motor 113. At least one control 185 is arranged in the first operating area 186, specifically the third control 183 and the fourth control 184. In other embodiments, the first operating area 186 can also be configured to be triggered by the same operating mode to control different motor movements.

[0081] As shown in FIGS. 4 and 5, the handle 148 has a holding center P, which refers to the geometric center of the holding area that can be held by the user when holding the handle 148. That is, the first handle 141 and the second handle 142 each have a holding center P, which refers to the geometric center of the holding area that can be held by the user when holding the first handle 141 or the second handle 142. In the extension direction of the handle 148, the holding center P is located at the geometric center of the holding area.

[0082] In the extension direction of the handle 148, the first distance L1 from the finger contact surface of the at least one control 185 to the tail end of the same handle 148 is greater than or equal to 160 mm and less than or equal to 200 mm. In some embodiments, the first distance L1 is about 170 mm, 180 mm, 185 mm, or 190 mm. In an implementation, when the first control 181 is a rotary switch, the torsion force for rotating the first control 181 is less than or equal to 15 N.

[0083] The second distance L2 from the finger contact surface of the at least one control 185 to the front end of the gripping area of the same handle 148 is less than or equal to 50 mm in the extension direction of the handle 148.

[0084] At least part of the at least one control 185 is located in a spherical area with the gripping center P of the handle 148 as the spherical center and R as the radius. In other words, at least part of at least one of the first control 181 and the second control 182 is located in a spherical area with the gripping center P of the handle 148 as the spherical center and R as the radius. The radius R is greater than or equal to 120 mm and less than or equal to 180 mm. That is, at least part of the at least one control 185 is located in a spherical area with the gripping center P of the first handle 141 as the spherical center and R as the radius, and the radius R is less than or equal to 180 mm. In an embodiment, the radius R is greater than or equal to 100 mm and less than or equal to 150 mm. In an embodiment, the radius R is greater than or equal to 120 mm and less than or equal to 150 mm. In some embodiments, the radius R is about 110 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, or 160 mm.

[0085] Through the technical solutions described above, by providing the single-hand control area 180 on the handle assembly 140, the user can simultaneously operate in the single-hand control area 180 using the same hand without leaving the handle 148, so as to realize the functions of pushing the snow blower 100 to run forward while adjusting at least two of the self-running speed of the snow blower 100, the rotation speed of the snow paddle 121, and the snow throwing direction of the snow throwing cylinder 151. The technical solutions of the present application enable the user to simultaneously operate in the single-hand control area 180 using the same hand without leaving the handle 148, so as to realize the functions of pushing the snow blower 100 to run forward while adjusting the snow throwing direction of the snow throwing cylinder 151. The technical solutions of the present application enable the user to simultaneously operate in the single-hand control area 180 using the same hand without leaving the handle 148, so as to realize the functions of pushing the snow blower 100 to run forward while adjusting the self-running speed of the snow blower 100 and the rotation speed of the snow paddle 121.

[0086] Referring to FIG. 6, the front end of the handle 148 is provided with a handle shell 188, and the at least one control 185 is mounted in the handle shell 188. FIG. 6 takes the second handle 142 as an example to show the mounting structure of the at least one control 185 and the handle shell 188.

[0087] Since the handle shell 188 is internally provided with a support pipe (not shown in the figure) connected to the first connecting rod 191 or the second connecting rod 192, the components inside the handle shell 188 need to be compact in a small space. In this application, at least one control 185 uses a Hall sensor switch to ensure normal use of the snow blower 100 in a low temperature environment. The Hall sensor switch is divided into a Hall plate and a magnetic part. The third control 183 changes the sensing area of the Hall plate and the magnetic part by rotating, and the first circuit board 1831 is arranged beside the third control 183, and the first circuit board 1831 transmits electrical signals to the control device 200 through the first lead wire 1832. The fourth control 184 changes the sensing area of the Hall plate and the magnetic part by pressing and moving, and the second circuit board 1841 is arranged beside the fourth control 184, and the second circuit board 1841 transmits electrical signals to the control device 200 through the second lead wire 1842. In this application, the control device 200 is arranged in the shell area below the main switch 146.

[0088] Fig. 8, Fig. 13 and Fig. 14 introduce an implementation of electronic interlocking of the first trigger 143 and the second trigger 144. Corresponding to the first operating member 301 and the second operating member 302 of the electric tool 300 and the walk-behind working machine, i.e. the snow blower 100, described above, in the specific embodiment of the snow blower 100, the first trigger 143 is the first operating member 301, and the second trigger 144 is the second operating member 302.

[0089] The handle assembly 140 includes the first trigger 143 and the second trigger 144. The first trigger 143 is arranged on the first handle 141, and the second trigger 144 is arranged on the second handle 142. In the embodiment shown in Fig. 9, the first trigger 143 is a self-propelled trigger, and the second trigger 144 is a snow blowing trigger. The first trigger 143 is used to start the self-propelled mode of the snow blower 100, and when the user presses the first trigger 143 to be attached to the first handle 141, the first trigger 143 is activated, and the self-propelled mode of the snow blower 100 is activated. The second trigger 144 is used to start the snow blowing paddle 121 of the snow blower 100, and when the user presses the second trigger 144 to be attached to the second handle 142, the second trigger 144 is activated, and the snow blowing assembly 120 of the snow blower 100 starts to work.

[0090] As shown in FIGS. 8 and 9, the snow blower 100, the walk-behind working machine and the power tool 300 further comprise a control device 200. In the snow blower 100, the control device 200 is configured to detect the states of the first trigger 143 and the second trigger 144. In an embodiment, the control device 200 comprises a first control device 210, a second control device 220 and a third control device 230. The power assembly 110 comprises a first motor 111 and a second motor 112. The first control device 210 outputs a driving signal to drive the first motor 111 to start or stop, and the second control device 220 outputs a driving signal to drive the second motor 112 to start or stop. The first control device 210 and the second control device 220 are electrically connected to the third control device 230. The first control device 210, the second control device 220 and the third control device 230 can be disposed on the same or different circuit boards. That is, the first control device 210, the second control device 220 and the third control device 230 can only have electrical connection, or can have both electrical connection and mechanical connection. The mechanical connection here means that at least two of the three control devices are directly connected or disposed on the same circuit board.

[0091] In an embodiment, the first control device 210, the second control device 220 and the third control device 230 are respectively disposed on three different circuit boards. That is, the three control devices only have electrical connection. The first control device 210 is connected to the first motor 111 and controls whether a first function is executed or allowed to be executed; the second control device 220 is connected to the second motor 112 and controls whether a second function is executed or allowed to be executed; and the third control device 230 is connected to the first operating member 301 and the second operating member 302.

[0092] The control mode of the control device 200 of the power tool 300, the walk-behind working machine and the snow blower 100 will be described below.

[0093] Continuing to FIG. 9, the power tool 300 disclosed in the present application comprises a power assembly 110 comprising at least one motor; a first operating member 301 and a second operating member 302 for a user to operate to control the power tool 300 to execute different functions; and an execution mechanism 310 driven by the power assembly 110 to execute different functions. The power tool 300 further comprises a control device 200 connected to the first operating member 301 and the second operating member 302. The power tool 300 is configured to have at least two working modes: a first working mode and a second working mode.

[0094] The control device 200 is configured to, in the first working mode, control the first function to be executed or allowed to be executed when only the first operating member 301 is triggered, control the second function to be executed or allowed to be executed when only the second operating member 302 is triggered, control the first function and the second function to be executed or allowed to be executed when it is detected that the first operating member 301 and the second operating member 302 are both in the triggered state, and control the first function and the second function to remain in the state of being executed or allowed to be executed when the second operating member 302 is released and the first operating member 301 continuously remains in the triggered state. When the electric power tool is switched from the first working mode to the second working mode, control the first function and the second function to be executed or allowed to be executed when it is detected that the first operating member 301 and the second operating member 302 are both in the triggered state, and control the first function and the second function to remain in the state of being executed or allowed to be executed when the first operating member 301 is released and the second operating member 302 continuously remains in the triggered state.

[0095] The control method of the snow blower 100 in the first working mode will be described below with reference to FIG. 12, which comprises the following steps:

[0096] S1. Detect the state of the first trigger 143 and the second trigger 144.

[0097] In this step, the control device 200 detects whether the first trigger 143 and the second trigger 144 are in the triggered state or the released state, the triggered state being the state in which the first trigger 143 and the second trigger 144 are closed.

[0098] S2. When the first trigger 143 and the second trigger 144 are both in the triggered state, control the first motor 111 and the second motor 112 to start or start.

[0099] S3. When the second trigger 144 is released and the first trigger 143 continuously remains in the triggered state, the state of the first motor 111 and the second motor 112 is maintained.

[0100] In some embodiments, step S3 needs to be executed after step S2 is executed. That is, only when the first trigger 143 and the second trigger 144 are both closed and the first motor 111 and the second motor 112 are both started, if the second trigger 144 is released but the first trigger 143 remains in the closed state, the first motor 111 and the second motor 112 will still remain in the running state.

[0101] S4. When the first trigger 143 is released, control the first motor 111 and the second motor 112 to stop running.

[0102] In one embodiment, step S4 is executed after step S3 is executed. If the first trigger 143 is released, both the first motor 111 and the second motor 112 exit the running state. If the first trigger 143 is released in the state that the second motor 112 is not started, only the first motor 111 exits the running state.

[0103] When the control device 200 detects that both the first trigger 143 and the second trigger 144 are in the triggered state, the control device 200 starts the first motor 111 and the second motor 112; and allows the first motor 111 and the second motor 112 to run simultaneously when the second trigger 144 is released and the first trigger 143 remains in the triggered state, so that the snow blower 100 simultaneously performs the self-propelled function and the snow sweeping function. After that, when the first trigger 143 is released, the control device 200 prohibits the first motor 111 and the second motor 112 from starting.

[0104] It is emphasized that in the first working mode, the control device 200 is configured to: when only the first operating member 301 (the first trigger 143 in the embodiment) is triggered, control the first function (the self-propelled function in the embodiment) to be executed or allowed to be executed; and when only the second operating member 302 (the second trigger 144 in the embodiment) is triggered, control the second function (the snow sweeping function in the embodiment) to be executed or allowed to be executed.

[0105] FIG. 13 shows a specific control method when the snow blower 100 works in the first working mode. In the embodiment, the self-propelled trigger is taken as the first trigger 143, and the snow throwing trigger is taken as the second trigger 144. The method includes the following steps:

[0106] When the main switch 146 of the snow blower 100 is powered on, the control device 200 detects the closed state of the self-propelled trigger and the snow throwing trigger. When the self-propelled trigger is detected to be closed, if the snow throwing trigger is also detected to be closed, the interlocking state is activated. In this state, if the self-propelled trigger is detected to remain closed and the snow throwing trigger is not closed, the snow blower 100 can still simultaneously realize the self-propelled function and the snow sweeping function. If any one of the self-propelled trigger and the snow throwing trigger is detected to be not closed, the interlocking state cannot be entered. In the state without interlocking, the user respectively operates the self-propelled trigger and the snow throwing trigger to respectively realize the self-propelled function and the snow sweeping function.

[0107] That is, when the first trigger 143 and the second trigger 144 are activated at the same time, if only the first trigger 143 is kept in the activated state and the second trigger 144 is released, the working state of the snow blower 100 is maintained consistent with the working state when the first trigger 143 and the second trigger 144 are activated at the same time. In this way, the user's operation on the handle assembly 140 is facilitated, and the user does not need to keep both hands closed on the first trigger 143 and the second trigger 144 at all times, and can release the second trigger 144 to free the right hand for other activities.

[0108] In addition, when adjusting the interlocking function of the first trigger 143 and the second trigger 144 by the control device 200, other problems caused by mechanical structure to realize the interlocking and unlocking function are also avoided. In a case where mechanical interlocking is required, the spring of the first trigger 143 needs to simultaneously pop up the first trigger 143 and the second trigger 144. By the electronic interlocking mode described in the present application, the spring rebound force can be reduced. The rebound force applied on the first trigger 143 to release the first trigger 143 is less than or equal to 20N, thereby solving the problem of large self-propelled trigger rebound force and uncomfortable use in the mechanical interlocking structure.

[0109] FIGS. 12 and 13 introduce the working mode of the control device 200 when the snow blower 100 is in the first working mode. The user uses the left hand to operate the first trigger 143 and uses the right hand to operate the second trigger 144. By setting the interlocking function, the user can realize that both the first trigger 143 and the second trigger 144 are triggered by only maintaining the action of the left hand. The freed right hand can be used to adjust other functional operating members, thereby performing fine control on the snow blower 100.

[0110] The snow blower 100 in the related art only provides the user with a way to hold and operate the first trigger 143 and the second trigger 144 with a fixed one of the left hand or the right hand. In actual application, right-handed users tend to use a snow blower 100 that only operates the first operating member 301 with the left hand and releases the second operating member 302 with the right hand to maintain the first function and the second function, and left-handed users tend to use a snow blower 100 that only operates the second operating member 302 with the right hand and releases the first operating member 301 with the left hand to maintain the first function and the second function. To simultaneously meet the operation preferences of different groups of people such as left-handed and right-handed people, the present application sets a second working mode different from the first working mode for the snow blower 100.

[0111] The control method of the snow blower 100 in the second working mode will be described below in conjunction with FIG. 14, which includes the following steps:

[0112] S1a. Detect the state of the first trigger 143 and the second trigger 144.

[0113] In this step, the control device 200 detects whether the first trigger 143 and the second trigger 144 are in a triggered state or a released state, the triggered state being a state in which the first trigger 143 and the second trigger 144 are closed.

[0114] S2a. When the first trigger 143 and the second trigger 144 are both in the triggered state, the control device 200 controls the first motor 111 and the second motor 112 to start or continue to start.

[0115] S3a. When the first trigger 143 is released and the second trigger 144 continues to be in the triggered state, the control device 200 controls the first motor 111 and the second motor 112 to continue to operate.

[0116] In some embodiments, step S3a is performed after step S2a. That is, only when the first trigger 143 and the second trigger 144 are both closed and the first motor 111 and the second motor 112 are both started, if the first trigger 143 is released but the second trigger 144 remains closed, the first motor 111 and the second motor 112 will continue to operate.

[0117] S4a. When the second trigger 144 is released, the control device 200 controls the first motor 111 and the second motor 112 to stop operating.

[0118] In one embodiment, step S4a is performed after step S3a. If the second trigger 144 is released, the first motor 111 and the second motor 112 are both in the operating state. If the second trigger 144 is released when the first motor 111 is not started, only the second motor 112 is in the operating state.

[0119] When the control device 200 detects that the first trigger 143 and the second trigger 144 are both in the triggered state, the control device 200 allows the first motor 111 and the second motor 112 to start; and when the first trigger 143 is released and the second trigger 144 continues to be in the triggered state, the control device 200 allows the first motor 111 and the second motor 112 to operate simultaneously, and the snow blower 100 simultaneously performs the self-propelled function and the snow sweeping function. After that, when the second trigger 144 is released, the control device 200 prohibits the first motor 111 and the second motor 112 from starting.

[0120] As shown in FIG. 15, when the main switch 146 of the snow blower 100 is powered on, the control device 200 detects the state of the first operating member 301 and the second operating member 302, and detects the working mode of the power tool 300. If it is detected that the power tool 300 is in the first working mode, the user can switch the power tool 300 from the first working mode to the second working mode by operating the third operating member 303; if it is detected that the power tool 300 is in the second working mode, the control device 200 controls the power tool 300 to continue to work in the second working mode.

[0121] The present application provides two implementation manners to enable the power tool 300 to implement the second working mode. In one embodiment, the control device 200 is configured to, in the second working mode, control the second function to be executed or allowed to be executed when only the first operation member 301 is triggered, and control the first function to be executed or allowed to be executed when only the second operation member 302 is triggered. That is, after the power tool 300 enters the second working mode, the control device 200 controls the functions executed by the first operation member 301 and the second operation member 302 to be "interchanged" with the functions executed in the first working mode. In this way, it is possible to maintain the execution of the two functions while only maintaining the triggering of the second operation member 302. In another embodiment, the control device 200 is configured to, after the power tool 300 enters the second working mode, exchange the interlocking signals output to the first motor 111 and the second motor 112. In the second working mode, the first function is controlled to be executed or allowed to be executed when only the first operation member 301 is triggered, and the second function is controlled to be executed or allowed to be executed when only the second operation member 302 is triggered. That is, when the first operation member 301 or the second operation member 302 is operated alone, the function executed does not change with the switching of the working mode.

[0122] It should be noted that the first operation member 301, the second operation member 302, and the third operation member 303 can be in the form of a trigger in the snow blower 100 embodiment, or can be other types of operation members, such as a button switch, a touch switch, a micro switch, a rocker switch, a knob, a touch switch on a touch display screen, a voice control switch, a light control switch, a gesture switch, etc. In one embodiment, the first operation member 301, the second operation member 302, and the third operation member 303 can use a Hall switch. In one embodiment, the third operation member 303 is taken as an example, and a certain function button on the power tool 300 can be operated in a button multiplexing manner by being pressed for several seconds. For example, a control lamp button that controls the turning on of a lamp can be pressed for 5 seconds to switch the power tool 300 between the first working mode and the second working mode.

[0123] As shown in FIG. 10 and FIG. 11, the power tool 300 having the first working mode and the second working mode further comprises a handle assembly 140 for a user to hold to adjust the moving direction of the power tool 300, and the first operation member 301 and the second operation member 302 are arranged on the handle assembly. In the embodiment shown in FIG. 10, taking the snow blower 100 as an example, the handle assembly 140 can comprise a first handle 141 for a left hand to hold and a second handle 142 for a right hand to hold, and the first handle 141 and the second handle 142 are connected. The third operation member 303 is arranged in a handle connecting portion 149 at the connection of the first handle 141 and the second handle 142. In the embodiment shown in FIG. 11, the handle assembly 140a comprises a first handle 141a and a second handle 142a, and the first handle 141a has a first control region comprising the first operation member arranged thereon, and the second handle 142a has a second control region comprising the second operation member arranged thereon. The first handle 141a and the second handle 142a are connected to form a handle connecting portion 149a and a handle connecting portion 149b, the handle connecting portion 149a is above the handle connecting portion 149b, and the handle connecting portion 149a comprises a display screen for displaying the working state of the power tool 300 or the walk-behind working machine, and the handle connecting portion 149b comprises more holding portions for a user to hold. The third operation member 303 can be arranged on the handle connecting portion 149a or the handle connecting portion 149b.

[0124] In an embodiment, the power tool 300 further comprises a control region, and the control region comprises a first control region 186 and a second control region 187, the first operation member 301 is arranged in the first control region 186, and the second operation member 302 is arranged in the second control region 187. The first control region 186 is for a user to operate in the first control region 186 without moving the left hand from the handle assembly, and the second control region 187 is for a user to operate in the second control region 187 without moving the right hand from the handle assembly.

[0125] In an embodiment, the power tool 300 further comprises a control region, and the control region comprises a first control region 186 and a second control region 187, the first operation member 301 is arranged in the first control region 186, and the second operation member 302 is arranged in the second control region 187. It is to be noted that the first control region 186 and the second control region 187 are not necessarily arranged on the first handle 141 and the second handle 142 respectively. For the power tool 300 having the first motor 111 and the second motor 112 simultaneously driving two different functions but not having the first handle 141 or the second handle 142, the first control region 186 and the second control region 187 can be two control regions spaced apart by a certain distance. A user can still achieve the locking effect of "interchanging" the first operation member 301 and the second operation member 302 arranged in the two control regions through the control mode disclosed in the present application.

[0126] In one embodiment, the power tool 300 further comprises a walking assembly 130 for walking, and the first function is a walking function or a self-propelled function of the walking behind working machine. For example, the power tool 300 can be a riding mower, and the walking wheels of the power tool 300 can support the riding mower to move or walk, and the execution mechanism is a blade system for cutting the lawn. In one embodiment, the power tool 300 is a walking behind working machine, and the walking behind working machine further comprises a walking assembly 130 for supporting the walking behind working machine to walk, and the first function is a self-propelled function of the walking behind working machine. The user can control the running direction of the walking assembly 130 by hand, and move together with the position movement of the walking assembly 130. For example, the power tool 300 can be a hand-push mower or a walking behind mower.

[0127] In one embodiment, the power tool 300 is a walking behind working machine, and the walking behind working machine comprises a handle assembly 140 for adjusting the walking direction, and the handle assembly 140 comprises a first handle 141 and a second handle 142 for the user to hold with both hands respectively, and the first operation member 301 is arranged on the first handle 141, and the second operation member 302 is arranged on the second handle 142.

[0128] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the above embodiments do not limit the present application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A power tool characterized by comprising: The power assembly comprises at least one motor; The first operation member and the second operation member are used for being operated by a user to control the electric power tool to perform different functions; The control device is connected to the first operation member and the second operation member, and is configured to: In the first working mode, when only the first operation member is triggered, control the first function to be performed or allowed to be performed, when only the second operation member is triggered, control the second function to be performed or allowed to be performed, when it is detected that the first operation member and the second operation member are both in the triggered state, control the first function and the second function to be performed or allowed to be performed, and when the second operation member is released and the first operation member continues to be in the triggered state, control the first function and the second function to remain in the state of being performed or allowed to be performed. When the electric power tool is switched from the first working mode to the second working mode, when it is detected that the first operation member and the second operation member are both in the triggered state, control the first function and the second function to be performed or allowed to be performed, and when the first operation member is released and the second operation member continues to be in the triggered state, control the first function and the second function to remain in the state of being performed or allowed to be performed. The handle assembly is further included for a user to hold to adjust the moving direction of the electric power tool, and the first operation member and the second operation member are arranged on the handle assembly. The control region includes a first control region and a second control region, the first operation member is arranged in the first control region, and the second operation member is arranged in the second control region.

2. The power tool of claim 1, wherein, The third operation member is arranged to adjust the electric power tool to switch between the first working mode and the second working mode.

3. The power tool of claim 1, wherein, The control device is configured to, in the second working mode, when only the first operation member is triggered, control the first function to be performed or allowed to be performed, and when only the second operation member is triggered, control the second function to be performed or allowed to be performed.

4. The power tool of claim 1, wherein, The control device is configured to, in the second working mode, when only the first operation member is triggered, control the second function to be performed or allowed to be performed, and when only the second operation member is triggered, control the first function to be performed or allowed to be performed.

5. The power tool of claim 1, wherein, The control device includes a first control device, a second control device and a third control device, the power assembly includes a first motor and a second motor, the first control device is connected to the first motor and controls whether the first function is performed or allowed to be performed, the second control device is connected to the second motor and controls whether the second function is performed or allowed to be performed, and the third control device is connected to the first operation member and the second operation member.

6. The power tool of claim 1, wherein, ​ 7. The power tool of claim 1, wherein, ​ 8. The power tool of claim 1, wherein, The electric power tool further comprises a walking assembly for supporting the electric power tool to walk, and the first function is a self-walking function.

9. The power tool of claim 1, wherein, The electric power tool is a rear-walking working machine, and the rear-walking working machine comprises a handle assembly for adjusting a walking direction, the handle assembly comprises a first handle and a second handle for a user to hold with two hands respectively, the first operation member is arranged on the first handle, and the second operation member is arranged on the second handle.

10. The power tool of claim 2, wherein, The handle assembly has a center split surface, and the handle assembly is left-right symmetrical relative to the center split surface.

11. The power tool of claim 1, wherein, The electric power tool is a snow sweeper.

12. The power tool of claim 11, wherein, The first handle comprises a single-hand control area, and the single-hand control area comprises at least one control, which is operable by a user to adjust a functional characteristic of the snow sweeper, and the functional characteristic can include a rotation speed of a snow sweeping shaft of the snow sweeping assembly, a walking speed or a walking direction of the walking assembly, a snow throwing direction or a snow throwing speed of the snow throwing assembly, etc.

13. The power tool of claim 12, wherein, The control comprises a first control, and the power assembly comprises a first motor for driving movement of the walking assembly, and the first control is used to adjust a running state of the first motor.

14. The power tool of claim 13, wherein, The control further comprises a second control, and the power assembly further comprises a third motor for driving movement of the snow throwing assembly, and the second control is used to control a state of the third motor.

15. The power tool of claim 14, wherein, The first handle and the second handle each have a holding center, which is a geometric center of a holding area that can be held by a user when a hand is held on the first handle or the second handle; at least part of at least one of the first control and the second control is located in a spherical area with the holding center P as a spherical center and R as a radius, and the radius R is greater than or equal to 120 mm and less than or equal to 180 mm.

16. A snow sweeper, comprising: a walking assembly for supporting the snow sweeper to walk; a snow sweeping assembly comprising a snow sweeping paddle rotatable around a rotation shaft; a snow throwing assembly comprising a snow throwing cylinder for realizing a snow throwing function, and a snow throwing direction of the snow throwing cylinder is adjustable; a power assembly comprising at least one motor, and the power assembly is used to drive at least one of the walking assembly, the snow sweeping assembly and the snow throwing assembly to work; a first operation member and a second operation member for a user to operate to control the snow sweeper to execute different functions; characterized in that further comprising a control device configured to: in a first working mode, when only the first operation member is triggered, control a first function to be executed or allowed to be executed, when only the second operation member is triggered, control a second function to be executed or allowed to be executed, when it is detected that the first operation member and the second operation member are both in a triggered state, control the first function and the second function to be executed or allowed to be executed, and when the second operation member is released and the first operation member continues to be in the triggered state, control the first function and the second function to maintain a state of being executed or allowed to be executed; When the snowplow is switched from the first working mode to the second working mode, when it is detected that both the first operating member and the second operating member are in a triggered state, the first function and the second function are controlled to be executed or allowed to be executed; and when the first operating member is released and the second operating member continues to be in a triggered state, the first function and the second function are controlled to remain in a state of being executed or allowed to be executed.

17. The snow thrower of claim 16, wherein, Further comprising a handle assembly for a user to hold to adjust a moving direction of the snowplow, the first operating member and the second operating member are arranged on the handle assembly.

18. The snow thrower of claim 16, wherein, Further comprising a control area, the control area comprises a first control area and a second control area, the first operating member is arranged in the first control area, and the second operating member is arranged in the second control area, the first control area is for a user to operate in the first control area without the left hand leaving the handle assembly, and the second control area is for a user to operate in the second control area without the right hand leaving the handle assembly.

19. The snow thrower of claim 16, wherein, Further comprising a third operating member arranged to adjust switching of the snowplow between the first working mode and the second working mode.

20. The snow thrower of claim 16, wherein, The control device is configured to, in the second working mode, when only the first operating member is triggered, control the first function to be executed or allowed to be executed, and when only the second operating member is triggered, control the second function to be executed or allowed to be executed.

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