CN221480679U - electrical tools - Google Patents

Abstract

The application discloses an electric tool, comprising: an operation part including a first handle for a user to hold; a working head drivable for working; a connecting rod connecting the operation part and the working head; the connecting rod comprises a first connecting rod connected with the working head and a second connecting rod connected with the operating part, and the first connecting rod is connected with the second connecting rod through a connecting component; the connecting assembly is a foldable assembly, and the connecting rod is folded through the folding connecting assembly, so that the electric tool is in a folded state; when the electric tool is in a folding state, the uppermost end of the working head on the axis far away from the connecting rod is connected with one end of the first connecting rod far away from the working head to form a first straight line, and the center of the first handle is located between the first straight line and the first connecting rod. By adopting the technical scheme, the electric tool convenient to store or carry can be provided.

Description

electrical tools

Technical Field

The present application relates to the technical field of tools, and in particular to an electric tool.

Background technique

Compared with engine-powered tools, electric tools are more environmentally friendly and thus widely used. For example, snow accumulation in yards and roads due to snowfall causes inconvenience in people's transportation and activities. Snow removal using shovels and brooms is too inefficient, and snow removal on main roads is generally done by snow removal equipment. Existing snow removal equipment generally scoops up snow with a snowplow, and then discharges the scooped snow to the outside through the rotation of the snowplow paddle. The snowplow paddle is generally set in a spiral shape, so that the scooped snow accumulates on the roadside.

The snow shovel is relatively long, which makes it inconvenient to store or carry.

This section provides background information related to the present application which is not necessarily prior art.

Utility Model Content

One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide an electric tool that is easy to store or carry.

In order to achieve the above objectives, the present application adopts the following technical solutions: an electric tool, comprising: an operating part, including a first handle for a user to hold; a working head, which can be driven for work; a connecting rod, connecting the operating part and the working head; the connecting rod comprises a first connecting rod connected to the working head and a second connecting rod connected to the operating part, and the first connecting rod and the second connecting rod are connected by a connecting assembly; the connecting assembly is a foldable assembly, and the connecting rod is folded by folding the connecting assembly so that the electric tool is in a folded state; wherein, when the electric tool is in the folded state, the uppermost end of the working head on the axis away from the connecting rod is connected to the end of the first connecting rod away from the working head to form a first straight line, and the center of the first handle is located between the first straight line and the first connecting rod.

In some embodiments, when the power tool is in the folded state, the second connecting rod is located above the first connecting rod.

In some embodiments, when the electric tool is in a folded state, the first straight line, the first connecting rod and the working head form a triangular area.

In some embodiments, when the power tool is in a folded state, the distance between the center of the first handle and the preset position of the working head housing is less than or equal to 200 mm, and the line connecting the preset position of the working head housing and the center of the first handle is parallel to the axis of the first connecting rod.

In some embodiments, when the power tool is in the folded state, the distance between the center of the first handle and the axis of the first connecting rod is less than or equal to 270 mm.

In some embodiments, when the electric tool is in a folded state, in a vertical direction along an axis perpendicular to the first connecting rod, a height of the operating portion is less than or equal to a height of the working head.

In some embodiments, the connecting assembly includes a first connecting assembly and a second connecting assembly, the first connecting assembly is sleeved on the first connecting rod, and the second connecting assembly is sleeved on the second connecting rod.

In some embodiments, the first connecting component and the second connecting component are connected by at least two groups of fixing components, the two groups of fixing components include a first group of fixing components and a second group of fixing components, the first group of fixing components is located above the first connecting rod, and the second group of fixing components is located below the first connecting rod.

In some embodiments, the first set of fixing components are rotatable fixing components, and the connecting rod is folded by removing the second set of fixing components and rotating the second connecting rod or the first connecting rod.

In some embodiments, the second connecting rod and the operating portion form a preset projection on a plane parallel to the axis of the connecting rod and perpendicular to the working head, and the length of the first connecting rod is greater than or equal to the length of the preset projection.

The benefit of the present application lies in that the electric tool is easy to carry and store by folding the electric tool.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a snow shovel according to an embodiment;

FIG2 is a side view of the snow shovel in FIG1 ;

FIG3 is another side view of the snow shovel in FIG1 when the connecting rod is at 45 degrees to the ground and one side plate is removed;

FIG4 is a side view of the snow shovel in FIG1 when the connecting rod is at 45 degrees to the ground;

FIG5 is a side view of the snow shovel in FIG1 placed on the ground;

FIG6 is a side view of the snow shovel in FIG1 with the second handle removed;

FIG7 is a side view of the snow shovel in FIG1 after the second handle and the battery pack are removed and folded;

FIG8 is a perspective view of the snow shovel in FIG1 after the second handle and the battery pack are removed and folded;

FIG9 is a top view of the working head of the snowplow shovel in FIG1 with the housing removed;

FIG10 is a rear view of the working head of the snow shovel in FIG1 ;

FIG11 is a top view of the working head of the snowplow shovel in FIG1 with the housing removed from another perspective;

FIG12 is a side view of the motor of the snow shovel in FIG1 ;

FIG13 is a perspective view of a portion of the snow shovel in FIG1 ;

FIG14 is a rear cross-sectional view of the working head of the snow shovel in FIG1 ;

FIG15 is a perspective view of the connection between the working head and the connecting rod of the snow shovel in FIG1 ;

FIG16 is a rear cross-sectional view of the connecting rod of the snow shovel in FIG1 ;

FIG17 is a side view of the connection between the operating portion and the connecting rod of the snow shovel in FIG1 ;

FIG18 is a side view of the interior of the working head of the snow shovel in FIG1;

FIG19 is a standing side view of the snow shovel in FIG1 ;

FIG. 20 is a side view of the working head of the snowplow shovel in FIG. 1 when the snowplow shovel is standing.

Detailed ways

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 drawings.

In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

In this application, the term "and/or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this application generally indicates that the related objects before and after are in an "and/or" relationship.

In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and may include electrical connection or coupling.

In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values that do not use relative terms should also be disclosed as specific values with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

In this application, it will be understood by those skilled in the art 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.

In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limitations on the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that the directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

Fig. 1 shows an electric tool, which may be a pole-type electric tool such as a snowplow 100, a lawn mower, a pruning machine, a pruning shear or a wall grinder. As an optional embodiment, the snowplow 100 is taken as an example for description.

FIG1 shows a snow shovel 100 for users to clear snow. The snow shovel 100 includes an operating part 10, a working head 20, a connecting rod 30 and a battery pack 40. Among them, the operating part 10 includes a first handle 11, which is a main handle and can be held by the user. The working head 20 is driven for work, such as shoveling snow. The connecting rod 30 connects the first handle 11 and the working head 20. The operating part 10 also includes a battery pack mounting part 12, and the battery pack 40 is mounted on the battery pack mounting part 12 for powering the snow shovel 100. In order to facilitate the description of the technical solution, the following are defined as shown in FIG1: front side, rear side, left side, right side, upper side and lower side. Among them, the front side, rear side, left side, right side, upper side and lower side are set based on the connecting rod 30. Among them, the connecting rod 30 can be an aluminum connecting rod, so that the weight of the whole machine of the snow shovel 100 is reduced, which is convenient for users to use.

In the embodiment of the present application, as shown in FIG1 , the first handle 11 is arranged at the rear end of the connecting rod 30, and the first handle 11 and the battery pack 40 are arranged up and down in a direction perpendicular to the axis 301 of the connecting rod 30, that is, in a direction perpendicular to the axis 301 of the connecting rod 30, the first handle 11 is on the upper side of the battery pack 40. Optionally, the first handle 11 and the battery pack 40 are respectively arranged on both sides of the connecting rod 30 and connected to the connecting rod 30. As shown in FIG2 , for the convenience of user operation, the center of the gripping portion of the first handle 11 is arranged on the upper side of the axis 301 of the connecting rod 30, and the battery pack 40 is arranged on the lower side of the axis 301 of the connecting rod 30. As shown in FIG1 , the operating portion 10 also includes a speed regulating component 13 for adjusting the working speed of the snow shovel 100. For example, the working speed of the snow shovel 100 can include two gears, namely, a low speed gear and a high speed gear, and the working speed of the snow shovel 100 is switched to a low speed gear or a high speed gear by pressing the speed regulating component 13. The working speed of the snow shovel 100 can also include other gears such as the third gear and the fourth gear, which are not limited in this application. As shown in FIG1 , the operating portion 10 also includes a switch assembly 14 for controlling the start or stop of the snow shovel 100. By arranging both the speed regulating assembly 13 and the switch assembly 14 on the operating portion 10, it is convenient to control the start and stop of the snow shovel 100 when holding the first handle 11, and to adjust the working speed of the snow shovel 100 at any time. In addition, as shown in FIG2 , a D-shaped space is formed in the operating portion 10 for the user to hold, which conforms to the shape of the user's hand when holding the first handle 11.

As shown in FIG3, when the user uses the snow shovel 100 and the angle between the connecting rod 30 and the direction in which the user pushes is 45 degrees, the first handle 11 and the direction in which the user pushes form a first angle A, which is greater than or equal to 30 degrees and less than or equal to 90 degrees. As shown in FIG3, a second angle B is formed between the first handle 11 and the connecting rod 30, which is greater than or equal to 45 degrees and less than or equal to 90 degrees. As shown in FIG2, the first handle 11 also includes a gripping trigger 111, which is a specific gripping part of the user when using the snow shovel 100. Among them, in the up and down direction, the height difference H1 between the center position of the gripping trigger 111 and the axis 301 of the connecting rod 30 is less than or equal to 200 mm. In addition, the center position of the gripping trigger 111 can also be set below the axis 301 of the connecting rod 30, in which case, the height difference H1 between the center position of the gripping trigger 111 and the axis 301 of the connecting rod 30 is less than or equal to 50 mm. That is, the center position of the grip trigger 111 can be below the axis 301 of the connecting rod 30, and the range below the axis 301 of the connecting rod 30 does not exceed 50 mm. Alternatively, the center position of the grip trigger 111 can also be parallel to the axis 301 of the connecting rod 30, or above the axis 301 of the connecting rod 30, and the range above the axis 301 of the connecting rod 30 does not exceed 200 mm. By setting the angle between the first handle 11 and the user's pushing direction, the angle between the first handle 11 and the connecting rod 30, and the height difference H1 between the grip trigger 111 and the axis 301 of the connecting rod 30 corresponding to the specific gripping part of the user using the snow shovel 100, the user can save more effort when pushing the snow shovel 100, and it is more convenient for the user to push and use the snow shovel 100.

In some embodiments, the snow shovel 100 is further provided with a second handle 50, which is a secondary handle. The second handle 50 is provided between the first handle 11 and the working head 20, and is provided on the connecting rod 30. To facilitate user operation, the second handle 50 is the same as the first handle 11, and is also provided on the upper side of the connecting rod 30. When using the snow shovel 100, the user can hold the first handle 11 and the second handle 50 at the same time. As shown in FIG4, when the angle between the snow shovel 100 and the ground is 45 degrees, the height difference H2 between the center position of the first handle 11 and the center position of the second handle 50 is less than or equal to 200 mm, that is, in the direction perpendicular to the ground, the center position of the second handle 50 is less than or equal to 200 mm below the center position of the first handle 11. Therefore, when the user uses the snow shovel 100, it is convenient for the user to hold the first handle 11 and the second handle 50 at the same time.

In some embodiments, a lighting device is installed on the first handle 11 and/or the second handle 50, so that when the snow shovel 100 is used at night or in the dark, the lighting device can help the user see the operating part 10 clearly to operate, and help the user see the road surface clearly, so that the user can use the snow shovel 100. Among them, the lighting device can be set at any position on the first handle 11 or the second handle 50, which is not limited in this application. Optionally, the lighting device can be powered by a battery pack 40. Optionally, the lighting device can also be a storage lighting device, which is installed on the first handle 11 and/or the second handle 50 after being charged by an external power supply. Optionally, the lighting device can also be powered by other means, which is not limited in this application.

In some embodiments, the battery pack 40 is detachably connected to the connecting rod 30, and the battery pack 40 is installed on the connecting rod 30 in a direction parallel to the connecting rod 30, that is, the battery pack 40 is installed on the battery pack installation portion 12 of the operating portion 10 in a direction parallel to the connecting rod 30, and is arranged on the lower side of the connecting rod 30, and the battery pack 40 is parallel to the connecting rod 30. As shown in FIG. 4, the battery pack 40 includes a first dimension 41 parallel to the connecting rod 30, and a second dimension 42 perpendicular to the connecting rod 30, wherein the first dimension 41 is greater than the second dimension 42. That is, the smaller surface of the battery pack 40 is installed on the battery pack installation portion 12, and the larger surface of the battery pack 40 is parallel to the connecting rod 30. Thus, the weight of the battery pack 40 can be distributed along the connecting rod 30, so that the user can reduce the force on the hand when using the snow shovel 100.

As shown in FIG5 , when the snow shovel 100 is placed on the ground, the battery pack 40 forms a third angle C with the ground, and the third angle C is less than or equal to 30 degrees. Since the angle between the battery pack 40 and the ground is small, there is a large area of the battery pack 40 in contact with the ground, so that when the user stops using the snow shovel 100 and releases the snow shovel 100, the battery pack 40 is not likely to hit the ground and be damaged.

In some embodiments, as shown in FIG6 , the connecting rod 30 includes a first connecting rod 31 and a second connecting rod 32, and the first connecting rod 31 and the second connecting rod 32 are connected through a connecting assembly 33 to form the connecting rod 30. The first connecting rod 31 is connected to the working head 20, and the second connecting rod 32 is connected to the operating part 10. The connecting assembly 33 is a foldable assembly, so that the connecting rod 30 is folded by folding the connecting assembly 33, so that the snow shovel 100 is in a folded state. Optionally, the snow shovel shown in FIG6 can be a snow shovel with the second handle 20 removed from the snow shovel 100 shown in FIG1 . Optionally, the snow shovel shown in FIG6 can also be a snow shovel in another embodiment.

Optionally, the first connecting rod 31 and the second connecting rod 32 can both be straight connecting rods, that is, the connecting rod 30 is a straight connecting rod, and the axis 301 of the connecting rod 30 is a straight axis. Optionally, the connecting rod 30 can be composed of a partially curved connecting rod and a partially straight connecting rod, and the axis 301 of the connecting rod 30 can include a partially curved axis and a partially straight axis. Among them, the part connected to the operating part 10 is a straight connecting rod, and the part connected to the working head 20 is a curved connecting rod, that is, the second connecting rod 32 can be a straight connecting rod, and the first connecting rod 31 can be a curved connecting rod. The axis 301 of the connecting rod 30 in the present application is a straight axis, or a partially straight axis. The present application is specifically described by taking the connecting rod 30 as a straight connecting rod as an example.

As shown in FIG7 , when the snow shovel 100 is in the folded state, the uppermost end 201 of the working head 20 on the axis 301 away from the connecting rod 30 is connected to one end 311 of the first connecting rod 31 away from the working head 20 to form a first straight line 34, that is, the uppermost end 201 of the working head 20 on the axis 301 perpendicular to the connecting rod 30 is connected to one end 311 of the first connecting rod 31 not connected to the working head 20 to form a first straight line 34. As shown in FIG7 , the center of the first handle 11 is located between the first straight line 34 and the first connecting rod 31. The first straight line 34, the first connecting rod 31 and the working head 20 form a triangular area M, and the center of the first handle 11 is located in the triangular area M. In order to make the center of the first handle 11 located in the triangular area M, that is, the first handle 11 will not be located above the working head 20 after folding. As shown in FIG8 , the second connecting rod 32 and the operating portion 10 form a preset projection on a plane N parallel to the axis 301 of the connecting rod 30 and perpendicular to the working head 20 , and the length of the first connecting rod 31 is greater than or equal to the length of the preset projection.

As shown in FIG. 7 , when the snow shovel 100 is in the folded state, the distance H3 between the center of the first handle 11 and the axis 301 of the first connecting rod 31 is less than or equal to 270 mm. Optionally, the first handle 11 may be against the first connecting rod 31, and the first handle 11 is in contact with the first connecting rod 31, at which time the distance between the center of the first handle 11 and the axis 301 of the first connecting rod 31 is the smallest. Optionally, the first handle 11 may not be in contact with the first connecting rod 31, the first handle 11 is above the first connecting rod 31, and the center of the first handle 11 only needs to be located in the triangular area M. Optionally, when the distance between the center of the first handle 11 and the axis 301 of the first connecting rod 31 is 105 mm, the first handle 11 is closest to the first connecting rod 31. Optionally, when the distance between the center of the first handle 11 and the axis 301 of the first connecting rod 31 is 270 mm, the first handle 11 is farthest from the first connecting rod 31. That is, the center of the first handle 11 is located at the edge of the triangular area M, and the center of the first handle 11 is located on the first straight line 34 .

As shown in FIG8 , when the snow shovel 100 is in a folded state, the second connecting rod 32 is located above the first connecting rod 31, that is, the snow shovel 100 is folded by folding the second connecting rod 32 above the connecting rod 30. At this time, as shown in FIG7 , the distance H4 between the center of the first handle 11 and the preset position 211 of the shell 21 of the working head 20 is less than or equal to 200 mm. Among them, the line connecting the preset position 211 of the shell 21 of the working head 20 and the center of the first handle 11 is parallel to the axis 301 of the first connecting rod 31. Optionally, the first handle 11 can be supported on the working head 20, and the first handle 11 is in contact with the shell 21 of the working head 20. Optionally, the first handle 11 may not be in contact with the shell 21 of the working head 20. By folding the snow shovel 100, the volume of the snow shovel 100 can be made smaller, which is convenient for storage and carrying of the snow shovel 100. In addition, compared with other folding methods, the present embodiment folds the snow shovel 100 toward the top of the connecting rod 30, so that the volume of the folded snow shovel 100 is smaller. In addition, in order to minimize the volume of the folded snow shovel 100, the first handle 11 can be supported on the first connecting rod 31.

In some embodiments, when the snow shovel 100 is in the folded state, the height of the operating portion 10 in the vertical direction along the axis 301 perpendicular to the first connecting rod 31 is less than or equal to the height of the working head 20. Thus, the volume of the folded snow shovel 100 is further reduced.

In some embodiments, as shown in FIG6 , the connection assembly 33 includes a first connection assembly 331 and a second connection assembly 332, wherein the first connection assembly 331 is sleeved on the first connection rod 31, and the second connection assembly 332 is sleeved on the second connection rod 32. The first connection assembly 331 and the second connection assembly 332 are connected by at least two groups of fixing assemblies 35 to form the connection assembly 33. The two groups of fixing assemblies 35 include a first group of fixing assemblies 351 and a second group of fixing assemblies 352, wherein the first group of fixing assemblies 351 is arranged above the first connection rod 31, and the second group of fixing assemblies 352 is arranged below the first connection rod 31. The first group of fixing assemblies 351 is a rotatable fixing assembly, so that the connection rod 30 can be folded by removing the second group of fixing assemblies 352 and rotating the second connection rod 32 or the first connection rod 31 based on the first group of fixing assemblies 351. The second connection rod 32 can be rotated counterclockwise upwards, or the first connection rod 31 can be rotated clockwise upwards. Optionally, the fixing assembly 35 may also be three groups of fixing assemblies 35, wherein two groups of fixing assemblies 35 are fixed below the first connecting rod 31, one group of fixing assemblies 35 is fixed above the first connecting rod 31, and the fixing assemblies 35 fixed above the first connecting rod 31 are rotatable fixing assemblies. Optionally, the fixing assembly 35 may also be four groups of fixing assemblies 35, wherein three groups of fixing assemblies 35 are fixed below the first connecting rod 31, one group of fixing assemblies 35 is fixed above the first connecting rod 31, and the fixing assemblies 35 fixed above the first connecting rod 31 are rotatable fixing assemblies.

In some embodiments, the connection line between the working head 20 and the operating part 10 is arranged in the connecting rod 31, and the connection line connects the working head 20 and the operating part 10 through the connecting rod 31. Thus, by folding the snow shovel 100, the disadvantage of the connection line being pulled and damaged when the snow shovel 100 is disassembled and assembled is avoided.

In some embodiments, when the snow shovel 100 is folded, the battery pack 40 and the second handle 50 can be removed, so that the volume of the snow shovel 100 after folding is smaller. As shown in FIG8 , when the snow shovel 100 is in the folded state, since the volume of the working head 20 is larger than the volume of the operating part 10, a storage space can be formed on both sides of the first handle 11 and the working head 20. The battery pack 40 and the second handle 50 can be placed in the storage space on both sides, so that when the snow shovel 100 is stored, the overall storage volume is smaller and all components of the full snow shovel 100 can be stored.

As shown in FIG9 , the working head 20 includes a housing 21 and a snowplow paddle 22, and the housing 21 is formed with a receiving space 212. The snowplow 100 includes a motor 60 and a circuit board 70, both of which are arranged in the receiving space 212, the motor 60 is used to drive the snowplow paddle 22, and the circuit board 70 is used to control the operation of the motor 60. As shown in FIG10 , the snowplow 100 also includes a heat dissipation airflow inlet 23 and a heat dissipation airflow outlet 24, the heat dissipation airflow inlet 23 communicates with the inside and outside of the receiving space 212, and the heat dissipation airflow outlet 24 is also connected with the inside and outside of the receiving space 212. Among them, the present application does not limit the shape or structure of the heat dissipation airflow inlet 23 and the heat dissipation airflow outlet 24, and any shape or structure that allows airflow to flow is acceptable. Therefore, when the snowplow 100 is working, the user pushes the snowplow 100 to move forward and backward, so that the heat dissipation airflow can flow in from the heat dissipation airflow inlet 23, and after flowing through the circuit board 70 and the motor 60, it flows out from the heat dissipation airflow outlet 24. During the use of the snow shovel 100, the circuit board 70 and the motor 60 are cooled by the heat dissipation airflow, which solves the problem that the circuit board 70 and the motor 60 are in a working state for a long time and the temperature is too high. Therefore, compared with the previous snow shovel 100 in which the circuit board 70 and the motor 60 are arranged in the operating part 10, the present application arranges the circuit board 70 and the motor 60 in the working head 20, which can avoid the situation where the circuit board 70 and the motor 60 are too high in temperature, improves the service life of the circuit board 70 and the motor 60, and saves the cost of long-term use of the snow shovel 100. In addition, the circuit board 70 and the motor 60 are arranged in the working head 20, which avoids the operating part 10 from being too heavy, reduces the weight of the operating part 10, and makes the user more labor-saving when pushing the snow shovel 100. Optionally, the working head of the snow shovel shown in FIG. 9 can be the working head 20 of the snow shovel 100 shown in FIG. 1, or can be the working head of the snow shovel in another embodiment.

In some embodiments, as shown in FIG. 9 , the circuit board 70 is disposed on the first side of the accommodating space 212, and the heat dissipation airflow inlet 23 is opposite to the circuit board 70 and is also disposed on the first side of the accommodating space 212. The motor 60 is disposed on the second side of the accommodating space 212, and the heat dissipation airflow outlet 24 is opposite to the motor 60 and is also disposed on the second side of the accommodating space 212. Wherein, when the first side is the left side of the accommodating space 212, the second side is the right side of the accommodating space 212. When the first side is the right side of the accommodating space 212, the second side is the left side of the accommodating space 212. The present application does not limit which side of the accommodating space 212 the first side or the second side is, as long as the heat dissipation airflow inlet 23 and the circuit board 70 are on the same side, and the heat dissipation airflow outlet 24 and the motor 60 are on the same side.

In some embodiments, as shown in FIG11 , in order to facilitate better heat dissipation of the circuit board 70, a heat sink 71 is provided on the circuit board 70. Optionally, after the heat dissipation airflow flows in from the heat dissipation airflow inlet 23, it passes through the heat sink 71 on the circuit board 70 and then flows to the motor 60. Optionally, as shown in FIG12 , the motor 60 is arranged in the motor heat dissipation assembly 61. The motor heat dissipation assembly 61 is an independent volute, and the shape of the motor heat dissipation assembly 61 can be a smooth Archimedean spiral. Thus, when the heat dissipation airflow flows from the circuit board 70 to the motor 60, the heat dissipation airflow flows through the motor 60 through the motor heat dissipation assembly 61 and flows out from the outlet of the motor heat dissipation assembly 61. The outlet of the motor heat dissipation assembly 61 is connected to the heat dissipation airflow outlet 24, so that the heat dissipation airflow can flow directly out of the snow shovel 100. Optionally, a fan 611 is provided in the motor heat dissipation assembly 61, and the fan 611 is connected to the motor 60, and the rotation of the fan 611 is driven by the operation of the motor 60. Thus, when the motor 60 is running, the rotation of the fan 611 can drive the heat dissipation airflow from the circuit board 70 to the motor heat dissipation assembly 61, and flow out from the motor heat dissipation assembly 61. In addition, the rotation of the fan 611 can also drive the heat dissipation airflow to flow in from the heat dissipation airflow inlet 23 and flow through the circuit board 70. By setting the motor heat dissipation assembly 61 as a smooth Archimedean spiral, the heat dissipation airflow can fully flow through the motor 60 and then flow out, the heat dissipation effect of the motor 60 is enhanced, and the efficiency of the motor 60 is improved. The service life of the motor 60 is further improved, and the cost of long-term use of the snow shovel 100 is reduced.

As shown in FIG13 , the heat dissipation airflow inlet 23 and the heat dissipation airflow outlet 24 are both facing downward, so that when the user uses the snow shovel 100, the airflow generated when the user pushes the snow shovel 100 facilitates the inflow and outflow of the heat dissipation airflow. The snow paddle 22 is also arranged in the accommodating space 212. Optionally, as shown in FIG14 , the heat dissipation airflow inlet 23 and the heat dissipation airflow outlet 24 are both arranged above the snow paddle 22. Optionally, the heat dissipation airflow inlet 23 and the heat dissipation airflow outlet 24 can also be arranged in other directions of the snow paddle 22, which is not limited in the present application. With respect to the direction of the snow paddle 100 (i.e., along the direction of the connecting rod 30), the heat dissipation airflow inlet 23 and the heat dissipation airflow outlet 24 are both arranged behind the snow paddle 22.

In some embodiments, since the circuit board 70 and the motor 60 are both disposed in the working head 20, the connecting rod 30 can be fixedly connected to both the working head 20 and the operating part 10. As shown in FIGS. 15 and 16, the connecting rod 30 can be fixed to the working head 20 by two clamps 80. In addition, the connecting rod 30 can also be fixed to the working head 20 by other numbers of clamps 80, which is not limited in this application. In order to prevent the connecting rod 30 from moving up and down when it is fixed on the working head 20, that is, moving forward and backward along the snow shovel 100, and to prevent the connecting rod 30 from rotating, at least one limiting hole 81 can be provided on the connecting rod 30, and a limiting hole matching assembly 82 can be provided on the working head 20 to match the limiting hole 81. Similarly, as shown in FIG. 17, the connecting rod 30 can also be fixed to the operating part 10 by two clamps 80. In addition, the connecting rod 30 can also be fixed to the operating part 10 by other numbers of clamps 80, which is not limited in this application. The connecting rod 30 and the operating part 10 can also be placed for rotation or movement by cooperating with the limiting hole 81 and the limiting hole matching assembly 82, which will not be described here. By fixing the connecting rod 30 to the working head 20 and the operating part 10 through the clamp 80, no noise will be emitted from the connecting rod 30 when the snow shovel 100 is used. Optionally, the connection method between the working head and the connecting rod of the snow shovel shown in Figures 15 and 16 can be the connection method between the working head 20 and the connecting rod 30 of the snow shovel 100 shown in Figure 1, or can be the connection method between the working head and the connecting rod of the snow shovel in another embodiment.

In some embodiments, in order to enable the motor 60 to drive the snowplow paddle 22 to work, a first pulley 91 is provided to be connected to the motor 60, and a second pulley 92 is provided to be connected to the rotating shaft of the snowplow paddle 22, and the first pulley 91 and the second pulley 92 are connected by a plurality of belts 93. Among them, the first pulley 91 is smaller than the second pulley 92. In order to avoid the height difference between the first pulley 91 or the second pulley 92 after the snowplow 100 is used for a long time, so as to prevent the snowplow 100 from working properly. As shown in FIG. 18, a fixing plate 94 is provided in the working head 20, and the first pulley 91 and the second pulley 92 are respectively mounted at both ends of the fixing plate 94, and the first pulley 91 and the second pulley 92 are always at the same height through the fixing plate 94. Thereby, the service life of the two pulleys is improved, and the normal operation of the snowplow 100 is ensured.

In some embodiments, as shown in FIG. 19 and FIG. 20 , the work head 20 further includes a first side plate 25 and a second side plate 26, and the first side plate 25 and the second side plate 26 are respectively the left side plate and the right side plate of the work head 20. The first side plate 25 includes a first grounding point 251 and a second grounding point 252, and the second side plate 26 includes a third grounding point 261 and a fourth grounding point 262. The first grounding point 251, the second grounding point 252, the third grounding point 261 and the fourth grounding point 262 support the snow shovel 100 to stand. When the snow shovel 100 stands, the center of gravity of the operating part 10 and the center of gravity of the battery pack 40 are both located within the center of gravity range 27 formed by the first grounding point 251 and the second grounding point 252. Among them, the center of gravity range 27 is formed by the range between the first center of gravity plane 271 and the second center of gravity plane 272. The first center of gravity plane 271 is a plane perpendicular to the line between the first grounding point 251 and the second grounding point 252 and passing through the first grounding point 251, and the second center of gravity plane 272 is a plane perpendicular to the line between the first grounding point 251 and the second grounding point 252 and passing through the second grounding point 252. Therefore, since the center of gravity of the operating part 10 and the center of gravity of the battery pack 40 are both located within the center of gravity range 27, the snow shovel 100 can stand stably.

In some embodiments, the line between the first grounding point 251 and the third grounding point 261 is parallel to the line between the second grounding point 252 and the fourth grounding point 262, so that the first center of gravity plane 271 can also be a plane perpendicular to the line between the first grounding point 251 and the second grounding point 252 and passing through the third grounding point 261, and the second center of gravity plane 272 can also be a plane perpendicular to the line between the first grounding point 251 and the second grounding point 252 and passing through the fourth grounding point 262. Optionally, the standing mode of the snow shovel shown in FIG. 19 can be the standing mode of the snow shovel 100 shown in FIG. 1, or can be the standing mode of the snow shovel in another embodiment.

The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims (10)

1. A power tool, comprising:

an operation part including a first handle for a user to hold;

a working head drivable for working;

a connecting rod connecting the operating unit and the working head;

it is characterized in that the method comprises the steps of,

The connecting rod comprises a first connecting rod connected with the working head and a second connecting rod connected with the operating part, and the first connecting rod is connected with the second connecting rod through a connecting component;

The connecting assembly is a foldable assembly, and the connecting rod is folded by folding the connecting assembly, so that the electric tool is in a folded state;

When the electric tool is in a folding state, the uppermost end of the working head on the axis far away from the connecting rod is connected with one end of the first connecting rod far away from the working head to form a first straight line, and the center of the first handle is positioned between the first straight line and the first connecting rod.

2. The power tool of claim 1, wherein the second connecting rod is located above the first connecting rod when the power tool is in a folded state.

3. The power tool of claim 1, wherein the first straight line, the first connecting rod and the working head form a triangular region when the power tool is in a folded state.

4. The power tool of claim 1, wherein a distance between a center of the first handle and a predetermined position of the working head housing is less than or equal to 200mm when the power tool is in a folded state, and a line connecting the predetermined position of the working head housing and the center of the first handle is parallel to an axis of the first connecting rod.

5. The power tool of claim 1, wherein a distance between a center of the first handle and an axis of the first connecting rod is less than or equal to 270mm when the power tool is in a folded state.

6. The power tool according to claim 1, wherein a height of the operation portion is smaller than or equal to a height of the working head in an up-down direction along an axis perpendicular to the first connecting rod when the power tool is in a folded state.

7. The power tool of claim 1, wherein the connection assembly comprises a first connection assembly and a second connection assembly, the first connection assembly is sleeved on the first connection rod, and the second connection assembly is sleeved on the second connection rod.

8. The power tool of claim 7, wherein the first connection assembly and the second connection assembly are connected by at least two sets of securing assemblies, the two sets of securing assemblies including a first set of securing assemblies located above the first connection rod and a second set of securing assemblies located below the first connection rod.

9. The power tool of claim 8, wherein the first set of securing members is a rotatable securing member, the connecting rods being folded by removing the second set of securing members and rotating either the second connecting rod or the first connecting rod.

10. The power tool according to claim 1, wherein the second connecting rod and the operating portion constitute a preset projection on a plane parallel to an axis of the connecting rod and perpendicular to the working head, and a length of the first connecting rod is greater than or equal to a length of the preset projection.