Electric tool and snow sweeper

Abstract

The invention discloses an electric tool. The electric tool comprises a power assembly, a first operation piece and a second operation piece which execute different functions, and a control device connected to the first operation piece and the second operation piece. The control device is configured to control the first function and the second function to be executed or allowed to be executed when the two operating parts are both in a triggered state in a first working mode; when the second operation piece is released and the first operation piece is continuously in the trigger state, the first function and the second function are controlled to keep an execution state or an execution permitting state; after the first working mode is switched to the second working mode, when the two operating parts are both in the trigger state, the first function and the second function are controlled to be executed or allowed to be executed; and when the first operation piece is released and the second operation piece is continuously in the trigger state, the first function and the second function are controlled to keep an execution state or an execution permitting state, so that different use habits of people with left handicapped and right handicapped are met.

Description

TECHNICAL FIELD

[0001] The present application relates to a power tool, in particular to a rear walking working machine and a snow blower. BACKGROUND

[0002] 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.

[0003] 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, right-handed, etc. of different groups of people at the same time.

[0004] In addition to snow blowers, rear walking working machines that perform other functions such as lawn mowers, pushable rear walking working machines, etc. also have the above-mentioned user needs.

[0005] This part provides background information related to the present application, which may not be prior art. SUMMARY

[0006] One object of the present application is to solve or at least alleviate part or all of the above-mentioned problems. To this end, one object of the present application is to provide a snow blower.

[0007] In order to achieve the above-mentioned object, the present application adopts the following technical solution:

[0008] An electric power tool comprises: 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.

[0009] 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 arranged on the handle assembly.

[0010] In an embodiment, further comprising an operation area, the operation area comprising a first operation area and a second operation area, the first operation member is arranged in the first operation area, and the second operation member is arranged in the second operation area, the first operation area is for a user to operate in the first operation area without the left hand leaving the handle assembly, and the second operation area is for a user to operate in the second operation area without the right hand leaving the handle assembly.

[0011] In an embodiment, further comprising a third operation member arranged to adjust the electric power tool to switch between the first working mode and the second working mode.

[0012] 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.

[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 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.

[0014] In one embodiment, the control device includes a first control device, a second control device, and a third control device, and the power assembly includes 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 element and the second operating element.

[0015] In one embodiment, a walking component for supporting the movement of the power tool is also included, the first function being a self-propelled function.

[0016] In one embodiment, the power tool is a rear-walking working machine, which includes a handle assembly for adjusting the walking direction. The handle assembly includes a first handle and a second handle for the user to hold with both hands respectively. A first operating element is disposed on the first handle, and a second operating element is disposed on the second handle.

[0017] A snowplow includes: a walking assembly for supporting the snowplow's movement; a snow-sweeping assembly including a snow-sweeping paddle rotatable about a pivot; a snow-throwing assembly including a snow-throwing tube for achieving a snow-throwing function, the snow-throwing direction of the snow-throwing tube being adjustable; a power assembly including at least one motor for driving at least one of the walking assembly, the snow-sweeping assembly, and the snow-throwing assembly; a first operating member and a second operating member for user operation to control the snowplow to perform different functions; and a control device configured to: in a first operating mode, when only the first operating member is triggered, control a first function to be executed or allow execution; and when only the second operating member is triggered, control a second function to be executed. The first and second functions can be executed or allowed to be executed; when both the first and second operating elements are detected to be in the triggered state, the first and second functions are controlled to be executed or allowed to be executed; and when the second operating element is released and the first operating element remains in the triggered state, the first and second functions are controlled to remain in the executed or allowed state; when the power tool switches from the first working mode to the second working mode, when both the first and second operating elements are detected to be in the triggered state, the first and second functions are controlled to be executed or allowed to be executed; and when the first operating element is released and the second operating element remains in the triggered state, the first and second functions are controlled to remain in the executed or allowed state.

[0018] The advantages of this application are:

[0019] The power tool and walk-behind machine are configured with a first working mode and a second working mode. In the first working mode, operating only the first operating component is sufficient to perform the functions of both the first and second operating components; in the second working mode, operating only the second operating component is sufficient to perform the functions of both the first and second operating components. This application also includes a feature that allows the power tool and walk-behind machine to switch between the first and second working modes, thereby accommodating the different usage habits of left-handed and right-handed users. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the snowplow provided in this application from one perspective;

[0021] Figure 2 This is a schematic diagram of the snowplow provided in this application from another perspective;

[0022] Figure 3 This is a schematic diagram of the handle assembly provided in this application;

[0023] Figure 4 This is a schematic diagram of the top leader provided in this application;

[0024] Figure 5 This is a schematic diagram of the second-in-command provided in this application;

[0025] Figure 6 This is a schematic diagram of the second handle and the interior of the handle housing provided in this application;

[0026] Figure 7 This is a functional schematic diagram of the power component provided in this application;

[0027] Figure 8 This is a connection diagram of the control device provided in this application;

[0028] Figure 9 This is a schematic diagram of the power tools provided in this application;

[0029] Figure 10 yes Figure 9 A schematic diagram of one embodiment of the handle assembly in the diagram;

[0030] Figure 11 yes Figure 9 A schematic diagram of another embodiment of the handle assembly;

[0031] Figure 12 This is the control scheme of the control device provided in this application in the first working mode;

[0032] Figure 13 This is a specific control logic diagram of the control device provided in this application in the first working mode;

[0033] Figure 14 This is the control scheme of the control device provided in this application in the second working mode;

[0034] Figure 15 This is the control logic diagram for the power tool provided in this application to switch from the first working mode to the second working mode. Detailed Implementation

[0035] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0036] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0037] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0038] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0039] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0040] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0041] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0042] In this application, the terms "controller," "processor," "central processing unit," "CPU," and "MCU" are used interchangeably. When using the unit "controller," "processor," "central processing unit," "CPU," or "MCU" to perform a specific function, unless otherwise stated, these functions may be performed by a single or multiple of the aforementioned units.

[0043] In this application, the terms "device," "module," or "unit" are used to describe devices that can be implemented in hardware or software to perform a specific function.

[0044] In this application, the terms “calculation,” “judgment,” “control,” “determine,” “identify,” etc., refer to the operation and process of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0045] This application provides an electric tool 300 (see...) Figures 9 to 11 The power tool 300 can be driven by a motor to perform different first and second functions. The power tool 300 includes a power assembly 110 and an actuator 310. The power assembly 110 includes at least one motor, and the actuator 310 is driven by the power assembly 110 to perform the first and second functions. The power tool 300 also includes a first operating element 301 and a second operating element 302 for user operation to control the execution of the first and second functions. The power tool 300 also includes a control device 200 connected to the first operating element 301 and the second operating element 302.

[0046] This application provides a user-propelled walking machine, which is also a type of power tool 300 and includes all the features described above for power tool 300. Unlike power tool 300, the walking machine also includes a walking assembly 130 for moving the walking machine. A power unit 110 can drive the walking assembly 130 and also drive the walking machine to perform other work tasks. The first function is self-propelled operation, and the second function is other work tasks.

[0047] The snowplow 100, as a type of rear-walking work machine, is propelled by the user and performs snow-sweeping functions. The snowplow 100 involved in this application also belongs to the category of the power tools 300 described above. Its first function is self-propelled operation, and its second function is snow-sweeping. Both the self-propelled and snow-sweeping functions are driven by motors, and the power unit 110 may include one or more motors. That is, the first and second functions can be driven by the same motor or by two different motors.

[0048] The technical solution of this application will be described in detail below using a snowplow 100 as an example. Figures 1 to 8 As shown, the snow sweeper 100 includes a power unit 110, a snow sweeping unit 120, a walking unit 130, a handle unit 140, a snow throwing unit 150, a power supply unit 160, and a housing 170.

[0049] The power supply unit 160 can be a DC power source or an AC power source, and may include one or more battery packs detachably connected to the snowplow 100. The power supply unit 160 may also include other energy supply methods such as solar panels.

[0050] The walking assembly 130 can be a walking wheel, which can rotate relative to the ground when the snowplow 100 is placed on the ground, allowing the snowplow 100 to move on the ground. Alternatively, the walking assembly 130 can rotate relative to the housing 170 to allow the snowplow 100 to move on the ground. The walking assembly 130 performs the first function of the snowplow 100, namely, the self-propelled function. The self-propelled function means that the walking assembly 130 can move when the user slightly pushes it or only adjusts its direction. The walking assembly 130 includes a first walking assembly 131 and a second walking assembly 132, which are respectively located on the left and right sides, and both are located below the handle assembly 140. In other embodiments, the number of walkable walking components in the walking assembly 130 can be one, two, three, or four. As another implementation of the walking assembly 130, tracks can also be used instead of walking wheels to enable the snowplow 100 to move on the ground. The walking component 130 involved in this application is not necessarily a walking wheel, but may also be a track or other structure that can cause the power tool 300 to move.

[0051] The snow removal assembly 120 includes a snowplow 121 and a snow-throwing paddle (not shown). The housing 170 houses or secures the power assembly 110 and also houses at least a portion of the snowplow 121 and the snow-throwing paddle. The snow removal assembly 120 is a functional component of the snowplow 100. The snow removal assembly 120 performs a second function of the snowplow 100, namely, the snow removal function. The snowplow 121 has a snowplow shaft 1211 extending along a first axis 101. The power assembly 110 drives the snowplow 121 to rotate around the snowplow shaft 1211 to achieve the snow removal function. After the snowplow 121 sweeps the snow into the housing 170, the snow-throwing paddle rotates and throws the snow a distance using centrifugal force.

[0052] The snow-throwing assembly 150 is used to change the trajectory of snow and throw it a distance; in other words, the snow-throwing assembly 150 is used to guide the snow-throwing direction of the snowplow 100. The snow-throwing assembly 150 includes a snow-throwing tube 151 for realizing the snow-throwing function, and the snow-throwing direction of the snow-throwing tube 151 is adjustable. In the snowplow 100, the snow-throwing assembly 150 performs the third function of the snowplow 100, namely the snow-throwing function. The snow-throwing assembly 150 is mounted on the housing 170. The housing 170, the snowplowing assembly 120, the snow-throwing assembly 150, and the power assembly 110 constitute the main body of the snowplow 100. A snow-throwing handle 145 is provided on the handle assembly 140 to adjust the snow-throwing direction of the snow-throwing tube 151. When the user moves the snow-throwing handle 145, the snow-throwing tube 151 can adjust the snow-throwing direction within its maximum movable range.

[0053] The power assembly 110 can be an electrically powered motor or engine. The power assembly 110 includes at least one motor. A power supply unit 160 is electrically connected to the power assembly 110 and provides power 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. The power assembly 110 includes a first motor 111 for driving the walking assembly 130, a second motor 112 for driving the snow sweeping assembly 120, and a third motor 113 for driving the snow throwing assembly 150. That is, the first motor 111 drives the walking assembly 130 to move, the second motor drives the snow sweeping shaft 1211 to rotate, and the third motor 113 drives the snow throwing tube 151 to rotate. In one embodiment, the first motor 111, the second motor 112, and the third motor 113 are completely different from each other. In one embodiment, two of the first motor 111, the second motor 112, and the third motor 113 are the same motor. In one embodiment, the first motor 111, the second motor 112, and the third motor 113 are completely identical, that is, they are the same motor.

[0054] The handle assembly 140 is used to allow a user to guide and control the snowplow 100. The handle assembly 140 includes a first handle 141 and a second handle 142 for the user to hold with both hands respectively. The first handle 141 and the second handle 142 are used by the user to operate and propel the snowplow 100. The first handle 141 is located to the left of the second handle 142, and is held by the user's left hand, while the second handle 142 is held by the user's right hand.

[0055] The handle assembly 140 is rotatably connected to the housing 170, or in other words, the handle assembly 140 is rotatable relative to the housing 170. The handle assembly 140 also includes a connecting rod 190 rotatably connected to the housing 170. The connecting rod 190 includes a first connecting rod 191 and a second connecting rod 192. In this embodiment, the first connecting rod 191 is to the left of the second connecting rod 192, and both connecting rods are telescopic.

[0056] The handle assembly 140 includes a main switch 146 for powering the snowplow 100. The main switch 146 is located on the handle connection portion 149 between the first handle 141 and the second handle 142. When the main switch 146 is activated, the snowplow 100 is powered on, and the power supply device 160 supplies electrical energy to the handle assembly 140 of the snowplow 100, thereby enabling the user to further operate other functional components that require power to perform their functions.

[0057] The first handle 141 includes a one-handed operation area 180, allowing the user to operate the device within this area without removing their hand from the first handle 141. In other words, when the user's left hand holds the first handle 141, their fingers can simultaneously operate within the one-handed operation area 180 on the first handle 141. Similarly, when the user's right hand holds the second handle 142, their right hand fingers can simultaneously operate within the one-handed operation area 180 on the second handle 141.

[0058] It should be noted that the one-handed operation area 180 can be disposed on any one of the handles of the handle assembly 140. In one embodiment, the one-handed operation area 180 is disposed only on the first handle 141. In one embodiment, the one-handed operation area 180 is disposed only on the second handle 142. In one embodiment, the one-handed operation area 180 can be disposed on both the first handle 141 and the second handle 142. In this application, handle 148 refers to either the first handle 141 or the second handle 142.

[0059] The single-handed control area 180 includes at least one control 185, which can be operated by the user to adjust the functional characteristics of the snow sweeper 100. These functional characteristics may include the rotational speed of the snow sweeping shaft 1211 of the snow sweeping component 120 of the snow sweeper 100, the walking speed or walking direction of the walking component 130, the snow throwing direction or snow throwing speed of the snow throwing component 150, and whether the main switch is powered on, etc.

[0060] Figures 3 to 6 One specific implementation of control 185 is revealed.

[0061] At least one control 185 may include a first control 181, which is used to adjust the state of the first motor 111. Alternatively, the first control 181 is used to adjust the state of the walking assembly 130. In one embodiment, the first control 181 can adjust the walking speed of the walking assembly 130. In one embodiment, the first control 181 can adjust the walking direction of the walking assembly 130, such as going straight or turning. This configuration allows the user to simultaneously adjust the walking speed or direction of the walking assembly 130 using the same hand that grips the handle 148 without removing their own hand from the handle 148. Figures 3 to 6 In the disclosed embodiment, the user adjusts the state of the walking component 130 with his left hand without removing his left hand from the first handle 141.

[0062] At least one control 185 may include a second control 182, which controls the state of the third motor 113. Alternatively, the second control 182 controls the state of the snow-throwing assembly 150. In one embodiment, the second control 182 controls the snow-throwing direction of the snow-throwing tube 151. In another embodiment, the second control 182 controls the snow-throwing speed of the snow-throwing direction of the snow-throwing tube 151. This configuration allows the user to simultaneously adjust the snow-throwing direction or speed of the snow-throwing tube 151 using the same hand that grips the handle 148 without removing their own hand from the handle. Figures 3 to 6 In the disclosed embodiment, the user adjusts the state of the snow-throwing component 150 of the walking component with his left hand while keeping his left hand on the first handle 141.

[0063] At least one control 185 may include a third control 183, which controls the state of the second motor 112. Alternatively, the third control 183 controls the state of the snow sweeping assembly 120. In one embodiment, the third control 183 controls the rotational speed of the snow sweeping shaft 1211. This configuration allows the user to simultaneously adjust the snow sweeping speed of the snow sweeping shaft 1211 using the same hand that holds the handle 148 without removing their own hand from the handle. Figures 3 to 6 In the disclosed embodiment, the user adjusts the state of the snow sweeping component 120 with his right hand without removing his right hand from the second handle 142.

[0064] At least one control 185 may include a fourth control 184, which controls the state of the third motor 113. Alternatively, the fourth control 184 controls the state of the snow-throwing assembly 150. In one embodiment, the fourth control 184 controls the snow-throwing direction of the snow-throwing tube 151. In another embodiment, the fourth control 184 controls the snow-throwing speed of the snow-throwing direction of the snow-throwing tube 151. This configuration allows the user to simultaneously adjust the snow-throwing direction or speed of the snow-throwing tube 151 using the same hand that grips the handle 148 without removing their own hand from the handle. Figures 3 to 6 In the disclosed embodiment, the user adjusts the state of the snow-throwing component 150 with his right hand without leaving the first handle 141.

[0065] like Figure 3As shown, the handle assembly 140 has a split surface 147. The handle assembly 140 is visually symmetrical about the split surface 147. The first handle 141 and the second handle 142 are substantially symmetrical about the split surface 147, and the first connecting rod 191 and the second connecting rod 192 are also substantially symmetrical about the split surface 147. In this embodiment, the one-handed operation area 180 on the first handle 141 and the one-handed operation area 180 on the second handle 142 are also substantially symmetrical about the split surface 147. The first control 181 and the third control 183 are symmetrical about the split surface 147, and the second control 182 and the fourth control 184 are symmetrical about the split surface 147.

[0066] In one embodiment, regardless of whether the functions of the controls 185 included in the one-handed control area 180 on the first handle 141 and the one-handed control area 180 on the second handle 142 are the same or different, the one-handed control area 180 on the first handle 141 and the one-handed control area 180 on the second handle 142 can be structurally configured to be symmetrical with respect to the dividing surface 147.

[0067] 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.

[0068] When the first control 181 moves forward at the top and backward at the bottom of its knob, the walking speed of the walking assembly 130 increases. When the user performs the opposite operation by rotating the first control 181, the rotational speed of the walking assembly 130 decreases. When the third control 183 moves forward at the top and backward at the bottom of its knob, the snow-sweeping speed of the snow-sweeping assembly 120 increases. When the user performs the opposite operation by rotating the third control 183, the snow-sweeping speed of the snow-sweeping assembly 120 decreases. In other embodiments, the first control 181 and the third control 183 may also be configured as other forms of operating elements, such as buttons, toggle switches, triggers, etc.

[0069] When the second control 182 is pressed, the snow-throwing tube 151 rotates from any current position until the snow-throwing opening faces the leftmost side of the snowplow 100, i.e., the snow-throwing direction is rotated to the leftmost side. When the fourth control 184 is pressed, the snow-throwing tube 151 rotates from any current position until the snow-throwing opening faces the rightmost side of the snowplow 100, i.e., the snow-throwing direction is rotated to the rightmost side. In other embodiments, the second control 182 and the fourth control 184 may also be configured as other forms of operating elements, such as knobs, toggle switches, triggers, etc.

[0070] Now let's describe the 180-degree single-handed control area in a different way.

[0071] The single-handed operation area 180 includes a first operation area 186 and a second operation area 187. The first operation area 186 is located on the first handle 141, and the second operation area 187 is located on the second handle 142. The first operation area 186 is located at the front end of the first handle 141 and is configured to be triggered by different operation methods to control the state of the first motor 111 and the third motor 113. At least one control 185 is provided within the first operation area 186, specifically the first control 181 and the second control 182. The second operation area 187 is located at the front end of the second handle 142 and is configured to be triggered by different operation methods to control the state of the second motor 112 and the third motor 113. At least one control 185 is provided within the first operation area 186, specifically the third control 183 and the fourth control 184. In other embodiments, the first operation area 186 may also be configured to be triggered by the same operation method to control the movement of different motors.

[0072] like Figure 4 and Figure 5 As shown, the handle 148 has a grip center P, which refers to the geometric center of the grip area available for the user to hold when gripping the handle 148. That is to say, both the first handle 141 and the second handle 142 have a grip center P, which refers to the geometric center of the grip area available for the user to hold when the hand is gripping the first handle 141 or the second handle 142. Along the extension direction of the handle 148, the grip center P is located at the geometric center of the grip area.

[0073] In the extending direction of the handle 148, a first distance L1 from the finger contact surface of 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 approximately 170 mm, 180 mm, 185 mm, or 180 mm. In one embodiment, when the first control 181 is a rotary switch, the torque required to rotate the first control 181 is less than or equal to 15 N.

[0074] Along the extension direction of the handle 148, the second distance L2 from the finger contact surface of at least one control 185 to the foremost end of the gripping area of ​​the same handle 148 is less than or equal to 50 mm.

[0075] At least a portion of at least one control 185 is located within a spherical region with the grip center P of the handle 148 as its center and radius R. The radius R is greater than or equal to 120 mm and less than or equal to 150 mm. That is, at least a portion of at least one control 185 is located within a spherical region with the grip center P of the first handle 141 as its center and radius R, and the radius R is less than or equal to 180 mm. In one embodiment, the radius R is greater than or equal to 100 mm and less than or equal to 150 mm. In another 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 approximately 110 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, or 160 mm.

[0076] The technical solution described above, by providing a one-handed operation area 180 on the handle assembly 140, allows the user to operate the snowplow 100 simultaneously with the same hand within the one-handed operation area 180 without removing their hand from the handle 148. This enables the user to simultaneously push the snowplow 100 forward while adjusting at least two of the following: the self-propelled speed of the snowplow 100, the rotational speed of the snowplow paddle 121, and the snow-throwing direction of the snow-throwing tube 151. The technical solution of this application allows the user to operate the snowplow 100 simultaneously with the same hand within the one-handed operation area 180 without removing their hand from the handle 148, enabling the user to simultaneously push the snowplow 100 forward while adjusting the snow-throwing direction of the snow-throwing tube 151. The technical solution of this application allows the user to operate the snowplow 100 simultaneously with the same hand within the one-handed operation area 180 without removing their hand from the handle 148, enabling the user to simultaneously push the snowplow 100 forward while adjusting the self-propelled speed of the snowplow 100 and the rotational speed of the snowplow paddle 121.

[0077] See below. Figure 6 The front end of the handle 148 is provided with a handle housing 188, and at least one control 185 is installed on the handle housing 188. Figure 6 Taking the second handle 142 as an example, the mounting structure of at least one control 185 and handle housing 188 is shown.

[0078] Because a support tube (not shown in the figure) connecting to the first connecting rod 191 or the second connecting rod 192 is installed inside the handle housing 188, the components inside the handle housing 188 need to be compactly structured within a small space. In this application, to enable the snow sweeper 100 to operate normally in low-temperature environments, at least one control 185 uses a Hall effect sensor switch. The Hall effect sensor switch consists of a Hall plate and a magnetic component. The third control 183 changes the sensing area of ​​the Hall plate and the magnetic component by rotation. A first circuit board 1831 is arranged next to the third control 183, and the first circuit board 1831 transmits electrical signals to the control device 200 through a first wire 1832. The fourth control 184 changes the sensing area of ​​the Hall plate and the magnetic component by pressing and moving. A second circuit board 1841 is arranged next to the fourth control 184, and the second circuit board 1841 transmits electrical signals to the control device 200 through a second wire 1842. In this application, the control device 200 is located in the housing area below the main switch 146.

[0079] Figure 8 , Figure 13 and Figure 14 An implementation method for electronic interlocking of the first trigger 143 and the second trigger 144 is introduced. Corresponding to the first operating member 301 and the second operating member 302 of the power tool 300 and the snowplow 100 described above, in a specific embodiment of the snowplow 100, the first trigger 143 is the first operating member 301, and the second trigger 144 is the second operating member 302.

[0080] The handle assembly 140 includes a first trigger 143 and a second trigger 144. The first trigger 143 is disposed on the first handle 141, and the second trigger 144 is disposed on the second handle 147. Figure 9 In the disclosed embodiment, the first trigger 143 is the self-propelled trigger, and the second trigger 144 is the snow-sweeping trigger. The first trigger 143 is used to activate the self-propelled mode of the snow sweeper 100. When the user presses the first trigger 143 until it is in contact with the first handle 141, the first trigger 143 is activated, and the self-propelled mode of the snow sweeper 100 is activated. The second trigger 144 is used to activate the snow sweeping paddle 121 of the snow sweeper 100. When the user presses the second trigger 144 until it is in contact with the second handle 142, the second trigger 144 is activated, and the snow sweeping component 120 of the snow sweeper 100 begins to work.

[0081] like Figure 8 and Figure 9As shown, the snowplow 100, the walk-behind machine, and the power tool 300 also include a control device 200. In the snowplow 100, the control device 200 is used to detect the status of the first trigger 143 and the second trigger 144. In one embodiment, the control device 200 includes a first control device 210, a second control device 220, and a third control device 230. The power assembly 110 includes a first motor 111 and a second motor 112. The first control device 210 outputs a drive signal to drive the first motor 111 to start and stop, and the second control device 220 outputs a drive signal to drive the second motor 112 to start and stop. The first control device 210 and the second control device 220 are both 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 located 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 be only electrically connected, or they can be both electrically connected and mechanically connected. The mechanical connection here refers to at least two of the three control devices being directly connected or mounted on the same circuit board.

[0082] In one 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 are only electrically connected. 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; the third control device 230 is connected to the first operating element 301 and the second operating element 302.

[0083] The control method of the control device 200 for the power tool 300, the walk-behind machine, and the snowplow 100 is described below.

[0084] Continue as Figure 9 As shown, the power tool 300 disclosed in this application includes a power assembly 110, including at least one motor; a first operating element 301 and a second operating element 302 for user operation to control the power tool 300 to perform different functions; and an actuator 310, driven by the power assembly 110 to perform different functions. The power tool 300 also includes a control device 200 connected to the first operating element 301 and the second operating element 302. The power tool 300 is configured to have at least two working modes: a first working mode and a second working mode.

[0085] The control device 200 is configured to: in a first operating mode, when only the first operating element 301 is triggered, control the execution or allow execution of a first function; when only the second operating element 302 is triggered, control the execution or allow execution of a second function; when both the first operating element 301 and the second operating element 302 are detected to be in a triggered state, control the execution or allow execution of both functions; and when the second operating element 302 is released and the first operating element 301 remains in a triggered state, control the execution or allow execution of both functions. When the power tool switches from the first operating mode to the second operating mode, when both the first operating element 301 and the second operating element 302 are detected to be in a triggered state, control the execution or allow execution of both functions; and when the first operating element 301 is released and the second operating element 302 remains in a triggered state, control the execution or allow execution of both functions.

[0086] The following will combine Figure 12 This describes the control method for the snowplow 100 when operating in the first working mode, which includes the following steps:

[0087] S1. Detect the status of the first trigger 143 and the second trigger 144.

[0088] 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 is the state in which the first trigger 143 and the second trigger 144 are closed.

[0089] S2. When both the first trigger 143 and the second trigger 144 are in the triggered state, control the first motor 111 and the second motor 112 to allow them to start or start.

[0090] S3. When the second trigger 144 is released and the first trigger 143 remains in the triggered state, the state of controlling the first motor 111 and the second motor 112 is maintained.

[0091] In some embodiments, step S3 is performed after step S2. That is, only when both the first trigger 143 and the second trigger 144 are closed, and both the first motor 111 and the second motor 112 are started, will the first motor 111 and the second motor 112 remain in operation if the second trigger 144 is released but the first trigger 143 remains closed.

[0092] S4. When the first trigger 143 is released, the first motor 111 and the second motor 112 are stopped.

[0093] In one embodiment, step S4 is performed after step S3. If the first trigger 143 is released, both the first motor 111 and the second motor 112 exit the operating state. If the first trigger 143 is released while the second motor 112 is not running, only the first motor 111 exits the operating state.

[0094] 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 when the second trigger 144 is released and the first trigger 143 remains in the triggered state, the first motor 111 and the second motor 112 are allowed to run simultaneously, and the snow sweeper 100 simultaneously performs the self-propelled function and the snow sweeping function. After this, when the first trigger 143 is released, the control device 200 prohibits the first motor 111 and the second motor 112 from starting.

[0095] It should be emphasized that in the first working mode, the control device 200 is configured such that when only the first operating element 301 (the first trigger 143 in this embodiment) is triggered, the first control function (the self-propelled function in this embodiment) is executed or allowed to be executed; and when only the second operating element 302 (the second trigger 144 in this embodiment) is triggered, the second control function (the snow sweeping function in this embodiment) is executed or allowed to be executed.

[0096] Figure 13 The specific control method of the snowplow 100 when operating in the first working mode is shown. In this embodiment, the self-propelled trigger 143 is used as the first trigger and the snow-throwing trigger 144 is used as the second trigger for illustration. The method includes the following steps:

[0097] When the main switch 146 of the snowplow 100 is powered on, the control device 200 detects the closed state of the self-propelled trigger and the snow-sweeping trigger. If the snow-sweeping trigger is also detected to be closed when the self-propelled trigger is detected to be closed, the interlock state is activated. In this state, if the self-propelled trigger remains closed while the snow-sweeping trigger is not closed, the snowplow 100 can still simultaneously perform self-propelled and snow-sweeping functions. If either the self-propelled trigger or the snow-sweeping trigger is not closed, the interlock state cannot be entered. In the uninterlocked state, the user can operate the self-propelled trigger and the snow-sweeping trigger separately to perform the self-propelled and snow-sweeping functions respectively.

[0098] In other words, when the first trigger 143 and the second trigger 144 are activated simultaneously, if only the first trigger 143 remains activated and the second trigger 144 is released, the snow sweeper 100 maintains the same operating state as when the first trigger 143 and the second trigger 144 are activated simultaneously. This design greatly simplifies the user's operation of the handle assembly 140, as the user does not need to keep both hands closed simultaneously on the first trigger 143 and the second trigger 144 at all times, and can release the second trigger 144 to free up their right hand for other activities.

[0099] Furthermore, when adjusting the interlocking function of the first trigger 143 and the second trigger 144 via the control device 200, other problems arising from implementing the interlocking and unlocking functions through a mechanical structure are avoided. In a case requiring mechanical interlocking, the spring of the first trigger 143 needs to simultaneously release both the first trigger 143 and the second trigger 144. However, with the electronic interlocking method described in this application, the spring return force can be reduced. The return force applied to the first trigger 143 so that the first trigger 143 is released is less than or equal to 20N, thereby solving the problem of large return force and uncomfortable use of the self-propelled trigger in the mechanical interlocking structure.

[0100] Figure 12 and Figure 13 This paper describes the operation of the control device 200 in the first working mode of the snowplow 100. The user operates the first trigger 143 with their left hand and the second trigger 144 with their right hand. An interlocking function allows the user to trigger both the first trigger 143 and the second trigger 144 simply by maintaining the left-hand operation. The freed-up right hand can then be used to adjust other functions, enabling more precise control of the snowplow 100.

[0101] The snowplow 100 in the related technology only provides users with a way to hold and operate the first trigger 143 and the second trigger 144 with one hand, using either their left or right hand. In practical applications, right-handed users tend to prefer a snowplow 100 that maintains both the first and second functions by operating the first operating component 301 with their left hand and releasing the second operating component 302 with their right hand, while left-handed users tend to prefer a snowplow 100 that maintains both the first and second functions by operating the second operating component 302 with their right hand and releasing the first operating component 301 with their left hand. To simultaneously satisfy the operating preferences of different users, such as left-handed and right-handed users, this application provides a second operating mode for the snowplow 100, which is different from the first operating mode.

[0102] The following will combine Figure 14 This describes the control method for the snowplow 100 when operating in the second working mode, which includes the following steps:

[0103] S1a. Detect the status of the first trigger 143 and the second trigger 144.

[0104] 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 is the state in which the first trigger 143 and the second trigger 144 are closed.

[0105] S2a. When both the first trigger 143 and the second trigger 144 are in the triggered state, control the first motor 111 and the second motor 112 to allow them to start or start.

[0106] S3a. When the first trigger 143 is released and the second trigger 144 remains in the triggered state, the state controlling the first motor 111 and the second motor 112 is maintained.

[0107] In some embodiments, step S3a is performed after step S2a. That is, only when both the first trigger 143 and the second trigger 144 are closed, and both the first motor 111 and the second motor 112 are started, will the first motor 111 and the second motor 112 remain in the running state if the first trigger 143 is released but the second trigger 144 remains closed.

[0108] S4a. When the second trigger 143 is released, the first motor 111 and the second motor 112 are stopped.

[0109] In one embodiment, step S4a is performed after step S3a. If the second trigger 144 is released, both the first motor 111 and the second motor 112 exit the operating state. If the second trigger 144 is released while the first motor 111 is not running, only the second motor 112 exits the operating state.

[0110] 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 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 remains in the triggered state, the first motor 111 and the second motor 112 are allowed to run simultaneously, and the snowplow 100 simultaneously performs the self-propelled function and the snow-sweeping function. After this, when the second trigger 144 is released, the control device 200 prohibits the first motor 111 and the second motor 112 from starting.

[0111] like Figure 15As shown, when the main switch 146 of the snowplow 100 is powered on, the control device 200 detects the status of the first operating element 301 and the second operating element 302, and detects the operating mode of the power tool 300. If the power tool 300 is detected to be in the first operating mode, the user can switch the power tool 300 from the first operating mode to the second operating mode by operating the third operating element 303; if the power tool 300 is detected to be in the second operating mode, the control device 200 controls the power tool 300 to continue operating in the second operating mode.

[0112] This application provides two possible implementation methods to enable the power tool 300 to achieve a second operating mode. In one embodiment, the control device 200 is configured to: in the second operating mode, when only the first operating element 301 is triggered, control the execution of a second function or allow its execution; when only the second operating element 302 is triggered, control the execution of a first function or allow its execution. That is, when the power tool 300 enters the second operating mode, the control device 200 controls the functions executed by the first operating element 301 and the second operating element 302 to "switch" with the functions executed in the first operating mode. This configuration allows for maintaining the triggering of only the second operating element 302 while maintaining the execution of both functions. In another embodiment, the control device 200 is configured to: after the power tool 300 enters the second operating mode, switch the interlock signals output to the first motor 111 and the second motor 112. In the second operating mode, when only the first operating element 301 is triggered, control the execution of a first function or allow its execution; when only the second operating element 302 is triggered, control the execution of a second function or allow its execution. In other words, when operating the first operating unit 301 or the second operating unit 302 individually, the function performed does not change with the switching of the working mode.

[0113] It should be noted that the first operating element 301, the second operating element 302, and the third operating element 303 can be in the form of a trigger as in the snow sweeper 100 embodiment, or they can be other types of operating elements, such as: push-button switches, tactile switches, micro switches, rocker switches, knobs, touch switches on touch screens, voice-activated switches, light-activated switches, gesture switches, etc. In one embodiment, the first operating element 301, the second operating element 302, and the third operating element 303 can use Hall effect switches. In one embodiment, taking the third operating element 303 as an example, it can be operated by pressing and holding a certain function button on the power tool 300 for several seconds, in a button-multiplexing manner. For example, the light control button for turning on the light can be pressed and held for 5 seconds to switch the power tool 300 between the first working mode and the second working mode.

[0114] like Figure 10 and Figure 11As shown, the power tool 300, which has a first working mode and a second working mode, also includes a handle assembly 140 for a user to grip and adjust the direction of movement of the power tool 300. A first operating member 301 and a second operating member 302 are disposed on the handle assembly. Figure 10 In the illustrated embodiment, taking a snowplow 100 as an example, the handle assembly 140 may include a first handle 141 and a second handle 142. The first handle 141 is for left-hand gripping, and the second handle 142 is for right-hand gripping. The first handle 141 and the second handle 142 are connected. A third operating member 303 is disposed within the handle connecting portion 149 at the connection between the first handle 141 and the second handle 142. Figure 11 In the illustrated embodiment, the handle assembly 140a includes a first handle 141a and a second handle 142a. The first handle 141a has a first control area including a first operating element, and the second handle 142a has a second control area including a second operating element. The first handle 141a and the second handle 142a are connected to form a handle connection portion 149a and a handle connection portion 149b. The handle connection portion 149a is located above the handle connection portion 149b, and includes a display screen that can show the working status of the power tool 300 or a walk-behind machine. The handle connection portion 149b includes additional gripping portions for the user to hold. The third operating element 303 may be located on either the handle connection portion 149a or the handle connection portion 149b.

[0115] In one embodiment, the power tool 300 further includes an operating area, which includes a first control area 186 and a second control area 187. A first operating element 301 is disposed within the first control area 186, and a second operating element 302 is disposed within the second control area 187. The first control area 186 is for operation by the user without removing the left hand from the handle assembly, and the second control area 187 is for operation by the user without removing the right hand from the handle assembly.

[0116] In one embodiment, the power tool 300 further includes an operating area, which includes a first control area 186 and a second control area 187. A first operating element 301 is disposed within the first control area 186, and a second operating element 302 is disposed within the second control area 187. It should be noted that the first control area 186 and the second control area 187 are not necessarily respectively disposed on the first handle 141 and the second handle 142. For a power tool 300 that has a first motor 111 and a second motor 112 simultaneously driving two different functions but does not have a first handle 141 or a second handle 142, the first control area 186 and the second control area 187 can be two control areas spaced a certain distance apart. Using the control method disclosed in this application, the user can still achieve the locking effect of "interchanging" the first operating element 301 and the second operating element 302 located in the two operating areas.

[0117] In one embodiment, the power tool 300 further includes a walking assembly 130 for mobility, the first function of which is the walking function of a rear-walking mower or a self-propelled function. For example, the power tool 300 can be a ride-on lawnmower, its wheels supporting the movement or walking of the ride-on lawnmower, and its actuator being a blade system for cutting lawn. In one embodiment, the power tool 300 is a rear-walking mower, further including the walking assembly 130 for supporting the movement of the rear-walking mower, the first function of which is the self-propelled function of the rear-walking mower. The user can control the direction of travel of the walking assembly 130 with their hands, and it moves along with the position of the walking assembly 130. For example, the power tool 300 can be a push-type lawnmower or a rear-walking lawnmower.

[0118] In one embodiment, the power tool 300 is a rear-walking machine. The rear-walking machine includes a handle assembly 140 for adjusting the walking direction. The handle assembly 140 includes a first handle 141 and a second handle 142 for the user to hold with both hands respectively. A first operating element 301 is disposed on the first handle 141, and a second operating element 302 is disposed on the second handle 142.

[0119] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this 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 operation region includes a first operation region and a second operation region, the first operation member is arranged in the first operation region, and the second operation member is arranged in the second operation region, the first operation region is used for a user to operate in the first operation region without the left hand leaving the handle assembly, and the second operation region is used for a user to operate in the second operation region without the right hand leaving the handle assembly.

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 tool further comprises a walking assembly for supporting the electric tool to walk, and the first function is a self-walking function.

9. The power tool of claims 1-8, wherein, The electric tool is a rear-walking working machine, which comprises a handle assembly for adjusting a walking direction, the handle assembly comprising a first handle and a second handle for a user to hold with two hands respectively, the first operation member being arranged on the first handle, and the second operation member being arranged on the second handle.

10. 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, a snow throwing direction of the snow throwing cylinder being adjustable; a power assembly comprising at least one motor, the power assembly being configured 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 the control device is 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 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 executed or allowed to be executed, and when the second operation member is released and the first operation member continuously stays in the triggered state, control the first function and the second function to keep being executed or allowed to be executed; when the electric 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 executed or allowed to be executed, and when the first operation member is released and the second operation member continuously stays in the triggered state, control the first function and the second function to keep being executed or allowed to be executed.

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