Chain saw

Abstract

The utility model provides a chain saw. The chain saw comprises a machine shell body. The working assembly is arranged at the front end part of the machine shell main body and extends out of the machine shell main body along the lengthwise direction of the chain saw; the top handle is arranged above the machine shell main body and is used for a user to grasp the chain saw; the chain saw further comprises a motor arranged in the machine shell main body and used for driving the working assembly, and a motor arranged in the machine shell main body and used for driving the working assembly, which are sequentially arranged in the lengthwise direction. The battery pack is arranged at the rear end part of the case main body; the control panel assembly is arranged in the machine shell and located between the motor and the battery pack, the control panel assembly is provided with a main extension plane, and the main extension plane is parallel to the side face, facing the motor, of the battery pack. The layout between the battery pack and the control panel assembly is more compact, the size of the machine shell body of the saw chain is further reduced, and miniaturization of products is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of tools, and in particular to a chain saw. Background Art

[0002] In a chain saw, a working component is located at the front end of the chain saw to perform sawing work, and a driving component is located at the rear end of the chain saw to control the working component.

[0003] In the prior art, the layout of components such as the motor and the control panel in the drive assembly takes up a large space and does not reduce the size of the chain saw body. Utility Model Content

[0004] In view of this, the purpose of the present application is to propose a chain saw that solves the problem that the layout of the internal components of the chain saw takes up a large space.

[0005] In order to achieve one of the above-mentioned application purposes, a chainsaw includes: a casing body; a working component, which is arranged at the front end of the casing body and extends out of the casing body along the longitudinal direction of the chain saw; a top handle, which is arranged above the casing body and is used for a user to grasp the chainsaw; the chainsaw also includes: a motor, which is arranged in the casing body and is used to drive the working component; a battery pack, which is arranged at the rear end of the casing body; and a control panel assembly, which is arranged in the casing body and is located between the motor and the battery pack, the control panel assembly having a main extension plane, which is parallel to the side of the battery pack facing the motor.

[0006] As a further improvement of one embodiment of the present application, the longitudinal direction of the battery pack is parallel to the main extension plane of the control board assembly, and the longitudinal direction of the battery pack and the main extension plane of the control board assembly are inclined relative to the bottom of the casing body.

[0007] As a further improvement of an embodiment of the present application, the top handle extends longitudinally along a first straight line, and an angle between the first straight line and the main extension plane of the control panel assembly is 60-90 degrees.

[0008] As a further improvement of an embodiment of the present application, it also includes: a side handle, the projection of the side handle along the first plane, the projection of the top handle along the first plane, and the projection of the main extension plane of the control panel assembly on the first plane form a triangle, and the first plane is perpendicular to the axis of the drive shaft of the motor.

[0009] As a further improvement of one embodiment of the present application, a cooling fan is provided on the drive shaft of the motor, and a heat sink is provided on the main extension plane of the control board assembly, and the orthographic projection of the cooling fan on the first plane at least partially overlaps with the orthographic projection of the heat sink on the first plane; wherein, the first plane is perpendicular to the axial direction of the drive shaft of the motor.

[0010] As a further improvement of an embodiment of the present application, the housing body includes a left housing and a right housing that are docked with each other, and a guide slot for the control board is provided on the left housing and / or the right housing.

[0011] As a further improvement of an embodiment of the present application, the insertion direction of the guide slot extends along the left-right direction.

[0012] As a further improvement of an embodiment of the present application, a motor fixing portion is further provided on the casing body, and the motor fixing portion and the guide slot are provided on the same side of the casing.

[0013] As a further improvement of an embodiment of the present application, the orthographic projection of the battery pack along the longitudinal direction on the second plane covers the orthographic projection of the control panel assembly along the longitudinal direction on the second plane, wherein the second plane is perpendicular to the longitudinal direction of the chain saw.

[0014] As a further improvement of an embodiment of the present application, the bottom end surface of the battery pack facing the casing body, the control board assembly, and the bottom inner side surface of the casing body are surrounded to form a storage space, and the storage space is used to accommodate electronic components, and the electronic components include at least one of a capacitor assembly and a switch.

[0015] The technical effect of this application is that a control board assembly is arranged between the motor and the battery pack, and the main extension plane of the control board assembly is parallel to the side of the battery pack facing the motor, thereby reducing the free space between the battery pack and the control board assembly, making the layout between the battery pack and the control board assembly more compact, further reducing the size of the casing body of the saw chain, and facilitating the miniaturization of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural diagram of a chain saw provided in one embodiment of the present application;

[0017] Figure 2 A partial structural diagram of a chain saw provided in one embodiment of the present application;

[0018] Figure 3 for Figure 2 Detailed view of point A in the middle;

[0019] Figure 4 A partial structural diagram of a housing body provided in one embodiment of the present application;

[0020] Figure 5 for Figure 3 Detail of point B in the middle;

[0021] Figure 6 This is a partial structural diagram of a chain saw provided in one embodiment of the present application.

[0022] Marking Description:

[0023] 1. Chain saw; 100. Housing body; 110. Left housing; 120. Right housing; 130. Guide slot; 140. Motor fixing part; 200. Working assembly; 300. Top handle; 400. Motor; 500. Battery pack; 600. Control panel assembly; 610. Heat sink; 700. Cooling fan; 800. Electrode holder; 900. Side handle. DETAILED DESCRIPTION

[0024] The present application will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are included within the scope of protection of the present application.

[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] A chainsaw comprises a housing body and a working assembly, wherein the working assembly is located at opposite front ends of the chainsaw and the housing body is located at opposite rear ends. The working assembly includes a saw chain with cutting function, and the housing body includes a motor for driving the saw chain, a battery pack for powering the motor, and a control panel assembly for controlling the motor. The chainsaw also includes a handle located on the exterior of the housing body. When using the chainsaw, the user grasps the handle, directing the working assembly forward so that the saw chain contacts the object being sawed, and maneuvers the saw chain in the direction of the object being sawed to achieve cutting.

[0027] In existing technology, the control board is often located below the battery pack or motor, which easily accumulates dust on the board. Furthermore, the control board assembly independently occupies space below the main housing, increasing the size of the housing. Furthermore, any plane of the battery pack is angled away from the main extension plane of the control board assembly, leaving some space within the angle. Therefore, this existing layout within the main housing is not conducive to miniaturization of the chain saw.

[0028] In one embodiment of the present application, Figure 1 、 Figure 2 and Figure 3 As shown, a chainsaw 1 is provided, comprising a housing body 100, a working assembly 200, and a top handle 300. The working assembly 200 is disposed at the front end of the housing body 100 and extends out of the housing body 100 in the longitudinal direction of the chainsaw 1. The top handle 300 is disposed above the housing body 100 and is used by a user to grip the chainsaw 1. The chainsaw 1 also includes a motor and a battery pack 500 disposed sequentially along the longitudinal direction. The motor is disposed in the housing body 100 and is used to drive the working assembly 200. The battery pack 500 is disposed at the rear end of the housing body 100. A control panel assembly 600 is located within the housing body 100 and disposed between the motor and the battery pack 500. The control panel assembly 600 has a main extension plane that is parallel to the side of the battery pack 500 facing the motor.

[0029] The control panel assembly 600 effectively utilizes the space between the motor and the battery pack 500. The main extension plane of the control panel assembly 600 is parallel to the side of the battery pack 500 facing the motor, which reduces the free space between the battery pack 500 and the control panel assembly 600, making the layout between the battery pack 500 and the control panel assembly 600 more compact, further reducing the size of the saw chain casing body 100, and facilitating the miniaturization of the product.

[0030] Specifically, the interior of the housing body 100 defines a storage space for accommodating components that drive the working assembly 200. A top handle 300 is located above the exterior of the housing body 100. When using the chainsaw 1, the user grasps the top handle 300, lifts the housing body 100, and controls the orientation of the working assembly 200 to perform sawing operations. The housing body 100 includes at least a motor, a battery pack 500, and a control board assembly 600. By arranging the motor 400, battery pack 500, and control board assembly 600 within the housing body 100, the storage space required for the housing body 100 can be further reduced, thereby reducing the product size. Furthermore, by adjusting the layout of the motor, battery pack 500, and control board assembly 600, the center of gravity within the housing body 100 can be adjusted, thereby improving the product's balance.

[0031] In a specific embodiment, when the chain saw 1 is located on a horizontal plane, the orthographic projection of the battery pack 500 on the second plane along the longitudinal direction covers the orthographic projection of the control panel assembly 600 on the second plane along the longitudinal direction, wherein the second plane is perpendicular to the longitudinal direction of the chain saw 1, further reducing the volume of the casing body 100.

[0032] It should be noted that the area of the orthographic projection of the control board assembly 600 on the second plane along the longitudinal direction is smaller than the area of the orthographic projection of the battery pack 500 on the second plane along the longitudinal direction. Therefore, the control board assembly 600 can be accommodated in the space corresponding to the motor in the longitudinal direction of the battery pack 500, and there is no need to develop new space for the control board assembly 600, thereby ensuring the compactness of the battery pack 500 and the control board assembly 600 and reducing the volume of the casing body 100.

[0033] In one embodiment of the present application, the longitudinal direction of the battery pack 500 is parallel to the main extension plane of the control board assembly 600, and the longitudinal direction of the battery pack 500 and the main extension plane of the control board assembly 600 are arranged at an angle relative to the bottom of the housing body 100. This brings the center of gravity of the battery pack 500 closer to the motor, which improves the balance of the chain saw 1, facilitates the user's grip, and reduces the overall length of the chain saw 1 in the longitudinal direction, making it smaller in size.

[0034] Specifically, the battery pack 500 includes a longitudinal direction, a width direction, and a height direction that are perpendicular to each other. For ease of description, the horizontal direction refers to the direction when the chain saw 1 is in a non-working state and is located on a horizontal surface. The direction of extension of the longest straight side of the battery pack 500 is set as the longitudinal direction, the direction of extension of the shortest straight side is set as the height direction, and the direction of extension of the straight side with the middle length and perpendicular to the longitudinal direction and the height direction is set as the width direction. Figure 6 As shown, the longitudinal direction is represented as X, the height direction is represented as Y, and the width direction is represented as Z. The plane formed by the longitudinal and width directions faces the motor, so in the horizontal direction, the center of gravity of the battery pack 500 is distributed in the height direction. Compared with the length and width directions, the center of gravity of the battery pack 500 is closer to the motor to ensure balance. The shortest height side of the battery pack 500 extends along the length of the chain saw 1, reducing the length of the chain saw 1.

[0035] In one specific embodiment, the height direction of the battery pack 500 is tilted relative to the horizontal direction of the chainsaw 1, with the bottom of the battery pack 500 relatively close to the motor in the horizontal direction, and the top of the battery pack 500 relatively far from the motor in the horizontal direction. In another specific embodiment, the height direction of the battery pack 500 is tilted relative to the horizontal direction of the chainsaw 1, with the bottom of the battery pack 500 relatively far from the motor in the horizontal direction, and the top of the motor relatively close to the motor in the horizontal direction. In other embodiments, the height direction of the battery pack 500 is parallel to the horizontal direction of the chainsaw 1.

[0036] In one embodiment, when the chainsaw 1 is positioned horizontally, the longitudinal direction of the battery pack 500 forms a second predetermined angle with respect to the horizontal plane, wherein the second predetermined angle is within a range of 60-80 degrees. When the longitudinal direction of the battery pack 500 forms an angle with respect to the horizontal plane within a range of 60-80 degrees, the position of the center of gravity of the battery pack 500 provides a more comfortable grip when the user operates the working assembly 200.

[0037] Specifically, when the battery pack 500 is tilted relative to the horizontal direction, the gravity of the battery pack 500 will change in the vertical direction of the chain saw 1. By setting the second preset angle to 60-80 degrees, the center of gravity of the battery pack 500 can be further moved closer to the center of gravity of the motor 400, thereby ensuring the balance of the product while achieving product miniaturization.

[0038] In a specific embodiment, the second predetermined angle formed by the longitudinal direction of the battery pack 500 relative to the horizontal plane may be 60 degrees, 70 degrees, or 80 degrees.

[0039] In a specific embodiment, when the chain saw 1 is in a non-operating state and is located on a horizontal surface, the center of gravity of the battery pack 500 is higher than the center of gravity of the control board assembly 600 .

[0040] Specifically, since the control panel assembly 600 is located between the battery pack 500 and the motor, when the battery pack 500 and the control panel assembly 600 are tilted relative to the horizontal direction and the bottom of the battery pack 500 is closer to the motor 400, the center of the battery pack 500 is higher than the center of gravity of the control panel assembly 600, which can make the center of gravity of the entire machine closer to the center of gravity of the motor 400, thereby ensuring the balance of the chain saw 1.

[0041] In a specific embodiment, when the chain saw 1 is in a non-operating state and located on a horizontal plane, the height direction of the battery pack 500 is parallel to the horizontal direction of the chain saw 1, and the center of gravity of the motor 400 and the control panel assembly 600 are lower than the center of gravity of the battery pack 500, so that the distance between the center of gravity of the control panel assembly 600 and the center of gravity of the motor is closer, further ensuring the balance of the chain saw 1.

[0042] In one embodiment of the present application, the top handle 300 extends longitudinally along a first straight line, and the angle between the first straight line and the main extension plane of the control panel assembly 600 is 60-90 degrees, which facilitates the user to apply force when grasping the top handle 300.

[0043] In a specific embodiment, the longitudinal extension direction of the first straight line is the extension direction of the top handle 300 , and the angle between the first straight line and the main extension plane of the control panel assembly 600 is 60 degrees, 80 degrees, or 90 degrees.

[0044] In one embodiment of the present application, Figure 1 As shown, the chain saw 1 also includes a side handle 900, which is arranged longitudinally along the second straight line, and the top handle 300 is arranged longitudinally along the first straight line. The first straight line, the second straight line and the main extension plane of the control panel assembly are projected on the first plane to form a triangle. The first plane is perpendicular to the axis of the drive shaft of the motor, ensuring stability when the user grasps the chain saw 1.

[0045] Specifically, the side plane of the chainsaw 1 is defined as a first plane, opposite the extension planes of the side handle 900 and the top handle 300, or opposite the plane of the battery pack 500 that coexists in the longitudinal and height directions. The orthographic projection of the side handle 900 on the first plane extends in the longitudinal direction of the side handle; the orthographic projection of the top handle 300 on the first plane extends in the longitudinal direction of the top handle 300; and the orthographic projection of the main extension plane of the control panel assembly 600 on the first plane extends in the longitudinal direction of the control panel assembly 600 and the battery pack 500. When a user grips the chainsaw 1, one hand grasps the top handle 300 corresponding to one side of the projected triangle, and the other hand grasps the side handle corresponding to another side of the projected triangle. This allows the control panel assembly 600 and the battery pack 500, corresponding to the third side of the projected triangle, to achieve greater balance and stability.

[0046] In one embodiment of the present application, Figure 6 As shown, a cooling fan 700 is provided on the motor drive shaft, and a heat sink 610 is provided on the main extension plane of the control board assembly 600. The orthographic projection of the cooling fan 700 on a first plane at least partially overlaps with the orthographic projection of the heat sink 610 on the first plane. The first plane is perpendicular to the axial direction of the motor drive shaft. The cooling fan 700 can dissipate heat for both the motor 400 and the control board assembly 600.

[0047] Specifically, the heat in the control board assembly 600 is discharged from the control board assembly 600 along the heat sink 610, the heat dissipation fan and the positive projection part of the heat sink 610 overlap, and the heat dissipation fan on the motor shaft guides the heat discharged from the control board assembly 600 to continue to discharge the casing body 100, and discharges the heat of the motor from the casing body 100.

[0048] In one embodiment of the present application, the housing body 100 includes an air outlet. When the chain saw 1 is in a non-operating state and is located on a horizontal surface, the control panel assembly 600 is located above the air outlet. Heat is discharged from the housing body 100 through the air outlet below the control panel.

[0049] Specifically, in the outer contour of the casing body 100, an air outlet is opened below the control panel assembly 600, and the air outlet connects the inside and outside of the casing body 100, discharges the heat generated by the control panel assembly 600 to the outside of the chain saw 1, or discharges the heat of the control panel assembly 600 and the motor to the outside of the chain saw 1.

[0050] In another embodiment, the housing body 100 includes an air outlet facing the first plane, and the heat of the control board assembly 600 and the motor is discharged to the outside at the side of the housing body 100 .

[0051] In one embodiment of the present application, when the chain saw 1 is located on a horizontal surface, the highest point of the battery pack 500 is higher than the lowest point of the top handle 300 , thereby improving the user's comfort when gripping the top handle 300 .

[0052] Specifically, when a portion of the weight of the battery pack 500 is higher than the top handle 300, it can be balanced with the top handle 300. If the battery pack 500 is lower than the top handle 300, the user may need to grasp the end of the top handle 300, or maintain the balance of grasping by manpower, which will produce an unpleasant feeling of use such as pressing the hand or being strenuous. By utilizing the mutual balance between the weight of the battery pack 500 and the top handle 300, the user can grasp the middle of the top handle 300, thereby improving the user experience.

[0053] In a specific embodiment, the height difference between the highest point of the battery and the lowest point of the top handle 300 is 10mm-20mm. In another specific embodiment, the height difference between the highest point of the battery pack 500 and the lowest point of the top handle 300 is 10mm, 15mm or 20mm.

[0054] In one embodiment of the present application, Figure 2 、 Figure 4 and Figure 5 As shown, the housing body 100 includes a left housing 110 and a right housing 120 that are docked with each other. A guide slot 130 for the control board assembly 600 is provided on the left housing 110 and / or the right housing 120 to facilitate the installation of the control board assembly 600 into the housing body 100.

[0055] Specifically, with a plane parallel to the first plane and perpendicular to the horizontal plane as the center, the space on both sides is divided into a left side and a right side. It should be noted that due to different perspectives, the left and right sides here refer to relative positions in the extension direction and are not limited to specific unilateral directions. The left housing 110 and the right housing 120 are docked with each other to form a complete housing body 100. When installing components in the housing body 100, the left housing 110 and the right housing 120 are separated, and components are installed in one of the left housing 110 or the right housing 120. A guide slot 130 is provided on one side of the housing, and the control board assembly 600 is inserted along the guide slot 130. The housing on the other side also has a guide slot 130, or no guide slot 130 is provided. When a guide slot 130 is provided, when the housing on the other side docks with the housing on one side, the guide slots 130 on both sides need to be aligned.

[0056] In one embodiment of the present application, the insertion direction of the guide slot 130 extends along the left-right direction.

[0057] Specifically, when the left housing 110 and the right housing 120 are docked, the left or right side of the housing is open, and the control board assembly 600 is inserted into the housing along the open left or right direction, which facilitates the installation of the control board assembly 600.

[0058] In another embodiment, the insertion direction of the guide slot 130 extends along the main extension plane of the control board assembly 600. An installation space is reserved in the direction of the main extension plane of the control board assembly 600, and the control board assembly 600 is inserted along this direction.

[0059] In one embodiment of the present application, Figure 5 As shown, the housing body 100 is further provided with a motor fixing portion 140 , and the motor fixing portion 140 and the guide slot 130 are provided on the same side of the housing to facilitate wiring between the control board assembly 600 and the motor.

[0060] Specifically, when the motor and control board assembly 600 is installed inside the casing body 100, the motor and control board assembly 600 is first fixed on the casing on one side. After the wiring is completed, it is docked with the casing on the other side to avoid wiring problems and line placement issues during the docking process.

[0061] In a specific embodiment, the motor fixing portion 140 is a mounting seat protruding from the inner wall of one side of the housing. A mounting hole is provided on the motor, and a mounting piece is used to connect the mounting seat and the mounting hole to achieve the fixing of the motor.

[0062] In one embodiment of the present application, the chainsaw 1 further includes an electrode holder 800 , which electrically connects the current transmission link between the battery pack 500 and the control board assembly 600 . The electrode holder 800 is positioned between the battery pack 500 slot and the control board. After the battery pack 500 is installed within the housing 100 , the cells within the battery pack 500 are electrically connected to the electrode holder 800 , transmitting electrical energy to the control board assembly 600 and the motor. This direct connection of the electrode holder 800 to the current transmission link of the control board assembly 600 improves the structural compactness of the control board assembly 600 and the battery pack 500 .

[0063] In one embodiment of the present application, the bottom end surface of the battery pack 500 facing the housing body 100, the bottom inner side surface of the housing body 100, and the side surface of the control board assembly 600 form a storage space. The storage space is used to accommodate electronic components, including at least one of a capacitor assembly and a switch. Using the free space to accommodate other electronic components further improves the compactness of the internal structure of the housing body 100.

[0064] In a specific embodiment, the longitudinal direction of the battery pack 500 is inclined relative to the horizontal direction, and a accommodating space is formed between the bottom end surface of the battery pack 500 and the casing body 100. The projection of the accommodating space on the first plane is a triangle, and electronic components are arranged in the accommodating space.

[0065] It should be noted that "a certain body" or "a certain part" can be a part of the corresponding "component", that is, the "a certain body" or "a certain part" can be integrally formed with the "other parts of the component"; or it can be an independent component that is separable from the "other parts of the component", that is, the "a certain body" or "a certain part" can be manufactured independently and then combined with the "other parts of the component" into a whole. The expression of the above-mentioned "a certain body" or "a certain part" in this application is only one of the implementation methods, for the convenience of reading, and not to limit the scope of protection of this application. As long as it contains the above-mentioned features and has the same function, it should be understood as an equivalent technical solution of this application.

[0066] It should be noted that the above description only describes some embodiments of the present application. Other embodiments are within the scope of the appended claims.

[0067] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. This narrative style of the specification is merely for the sake of clarity, and those skilled in the art should take the specification as a whole. In line with the concept of the present application, the above embodiments or the technical features in different embodiments may also be appropriately combined, and there are many other variations in different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0068] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and principles of the embodiments of this application shall be included within the scope of protection of this application.

Claims

1. A chain saw comprising: Housing body; a working assembly, disposed at the front end of the housing body and extending out of the housing body along the longitudinal direction of the chain saw; a top handle, disposed above the housing body and used for a user to grip the chain saw; It is characterized in that the chain saw further comprises: a motor, disposed in the housing body and used to drive the working component; a battery pack, disposed at the rear end of the housing body; and A control board assembly is disposed in the housing body and between the motor and the battery pack. The control board assembly has a main extension plane, which is parallel to the side of the battery pack facing the motor.

2. The chain saw according to claim 1, wherein: The longitudinal direction of the battery pack is parallel to the main extension plane of the control board assembly, and the longitudinal direction of the battery pack and the main extension plane of the control board assembly are inclined relative to the bottom of the housing body.

3. The chain saw according to claim 1, wherein: The top handle extends longitudinally along a first straight line, and an angle between the first straight line and a main extension plane of the control panel assembly is 60-90 degrees.

4. The chain saw according to claim 1, wherein: Also includes: A side handle, wherein the side handle is arranged longitudinally along a second straight line, and the top handle is arranged longitudinally along a first straight line, the projections of the first straight line, the second straight line and the main extension plane of the control panel assembly on the first plane form a triangle, and the first plane is perpendicular to the axis of the drive shaft of the motor.

5. The chain saw according to claim 1, wherein: A cooling fan is provided on the driving shaft of the motor, and a heat sink is provided on the main extension plane of the control board assembly. The orthographic projection of the cooling fan on the first plane at least partially overlaps with the orthographic projection of the heat sink on the first plane; wherein the first plane is perpendicular to the axial direction of the driving shaft of the motor.

6. The chain saw according to claim 1, wherein: The housing body comprises a left housing and a right housing that are butted against each other, and a guide slot of the control board assembly is provided on the left housing and / or the right housing.

7. The chain saw according to claim 6, characterized in that The inserting direction of the guide slot extends along the left-right direction.

8. The chain saw according to claim 6, wherein: The housing body is further provided with a motor fixing portion, and the motor fixing portion and the guide slot are arranged on the same side of the housing.

9. The chain saw according to claim 1, wherein: The orthographic projection of the battery pack on the second plane along the longitudinal direction covers the orthographic projection of the control board assembly on the second plane along the longitudinal direction, wherein the second plane is perpendicular to the longitudinal direction of the chain saw.

10. The chain saw according to claim 1, wherein The bottom end surface of the battery pack facing the casing body, the control board assembly, and the bottom inner side surface of the casing body are surrounded to form a storage space, and the storage space is used to accommodate electronic components, and the electronic components include at least one of a capacitor assembly and a switch.

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