Electric tool

Abstract

An electric tool, comprising a housing (10), a first holding portion (40) located on a top side of the housing (10), and a second holding portion (50) located on a side surface of the housing (10), wherein the second holding portion (50) comprises a first fixing portion (51) and a second fixing portion (52) which are connected to the housing (10), a first axis (X1) intersecting a second axis (X2), and an angle formed between the first axis and the second axis being greater than or equal to 40° and less than or equal to 85°. By means of the tool, a user is not prone to fatigue when holding and operating the electric tool, and a good usage experience is thus provided.

Description

power tools [Technical field]

[0001] The invention belongs to the technical field of gardening equipment, and in particular relates to an electric tool. [Background Technology]

[0002] A chainsaw is a common garden power tool, comprising a housing, a motor housed in the housing, and a battery pack that provides power to the motor. In order to adapt to different working angles and user operating habits, a chainsaw is usually provided with a main handle located on the top side of the housing and a side handle located on one side of the housing; a certain angle is formed between the side handle and the main handle. When the angle is too small, the distance between the user's two hands is too small during operation, making operation uncomfortable; when the angle is too large, the user usually holds the saw in a small area where the side handle is bent in order to save effort during operation, making it impossible to adapt to multi-angle working scenarios.

[0003] In view of this, it is indeed necessary to provide an improved electric tool to overcome the defects of the prior art.

[0004] [Summary of the invention]

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide an electric tool that is comfortable to operate.

[0006] In a first aspect, the present invention provides an electric tool comprising a housing, a first grip portion, and a second grip portion. The housing extends in a front-to-back direction and is formed with a first connection region and a second connection region. The first grip portion is located on the top side of the housing, with the front end of the first grip portion connected to the first connection region and the rear end of the first grip portion connected to the second connection region, the front end of the first grip portion being higher than the rear end thereof so that the first grip portion extends obliquely along a first axis. The second grip portion is located on the side of the housing, and the second grip portion comprises a first fixing portion and a second fixing portion connected to the housing. The first fixing portion is at least partially located in the first connection region, and the second fixing portion is located between the first connection region and the second connection region in the front-to-back direction. The first fixing portion and the second fixing portion are connected to form a second axis. When viewed from a left-right direction perpendicular to the front-to-back direction, the first axis intersects with the second axis, and the angle formed therebetween is greater than or equal to 40° and less than or equal to 85°.

[0007] In the above technical solution, the power tool includes a housing, a first grip located on the top side of the housing, and a second grip located on the side of the housing. The second grip includes a first fixing portion and a second fixing portion connected to the housing, both of which are arranged with reference to the first connection area and the second connection area of ​​the housing where the first grip is connected. When viewed from the left and right directions perpendicular to the front-back direction, the first axis intersects with the second axis, and the angle formed therebetween is greater than or equal to 40° and less than or equal to 85°. This ensures that when a user operates the power tool with both hands, the angle between the two hands is neither too small to cause fatigue nor too large to limit the gripping area of ​​one hand and affect the user experience.

[0008] In a preferred embodiment of the above-mentioned power tool of the present invention, the second gripping portion includes a first section, a second section, and a third section. The first section extends from the first fixing portion; the second section extends from the second fixing portion; and the third section connects the first and second sections. The second gripping portion includes an effective gripping area located on at least one of the first and third sections, and the length of the effective gripping area decreases as the angle between the first and second axes increases.

[0009] In a preferred embodiment of the above-mentioned electric tool of the present invention, when viewed from the left and right directions, the intersection of the first axis and the second axis is located in the first connection area, and the angle between the first axis and the second axis is greater than or equal to 45° and less than or equal to 65°.

[0010] In a preferred embodiment of the above-mentioned electric tool of the present invention, when viewed from the left and right directions, the angle between the first axis and the second axis is between 40° and 75°, and the center of gravity of the entire chain saw is located in an area surrounded by this angle range.

[0011] In a preferred embodiment of the above-mentioned electric tool of the present invention, in an up-down direction perpendicular to the front-rear direction, the center of gravity of the electric tool is located between the first fixing portion and the second fixing portion.

[0012] In a preferred embodiment of the above-mentioned power tool of the present invention, the power tool further comprises a functional assembly housed within the housing, the functional assembly comprising a motor, a gear assembly, and a gearbox. The motor is configured to drive a working assembly extending forward from the front end of the housing; the gear assembly is in transmission connection with the motor; and the gearbox is configured to house the gear assembly. The functional assembly comprises a contour region formed by the outer contours of the gearbox and the motor, and the second fixing portion is at least partially located within the contour region when viewed from the left and right sides.

[0013] In a preferred embodiment of the above-mentioned electric tool of the present invention, the motor shaft of the motor extends in the left-right direction; the output shaft of the gear assembly is arranged parallel to the motor shaft; wherein, in the front-back direction, the center of the second fixing portion is located between the motor shaft and the output shaft.

[0014] In a preferred embodiment of the above-mentioned electric tool of the present invention, the working component includes a guide plate extending along a third axis; the first fixing portion and the second fixing portion are respectively located on both sides of the third axis in the up and down directions perpendicular to the front and back.

[0015] In a preferred embodiment of the above-mentioned electric tool of the present invention, the angle between the first axis and the third axis is between 0° and 15°.

[0016] In a preferred embodiment of the above-mentioned electric tool of the present invention, a fourth axis is formed in a plane parallel to the guide plate, passing through the center line of the motor shaft and the center line of the output shaft, and the angle between the fourth axis and the third axis is an acute angle; and, in a plane parallel to the guide plate, the projection point of the second fixing portion is located at the front and lower side of the projection point of the motor shaft.

[0017] In a preferred embodiment of the above-mentioned electric tool of the present invention, in the front-rear direction, the center of gravity of the electric tool is located between the motor shaft and the output shaft.

[0018] In a preferred embodiment of the electric tool of the present invention, the second gripping portion is configured as a linear connection structure or a curved structure between the first fixing portion and the second fixing portion.

[0019] In a preferred embodiment of the above-mentioned power tool of the present invention, the housing includes an air inlet and an air outlet in fluid communication with the air inlet, an air flow channel is formed between the air inlet and the air outlet, and the power tool further includes a motor, a fan, a controller, and a battery pack. The motor is housed within the housing and is located within the air flow channel; the fan is driven to rotate by the motor; the controller is electrically connected to the motor, located upstream of the motor within the air flow channel and adjacent to the air inlet; the battery pack is detachably connected to the rear end of the housing; and the air inlet is located between the motor and the battery pack in the front-to-back direction.

[0020] In a preferred embodiment of the above-mentioned electric tool of the present invention, the shell includes a first chamber and a second chamber, the first chamber is used to accommodate the motor and is provided with the air outlet; the second chamber is used to accommodate the controller and is provided with the air inlet; and the first chamber and the second chamber are fluidically connected.

[0021] In a preferred embodiment of the power tool of the present invention, the power tool further comprises a partition disposed between the first chamber and the second chamber, the partition comprising a partition plate and a cover. The partition plate is configured to extend parallel to the controller and to form an airflow passage between the partition plate and the controller, thereby directing airflow entering from the air inlet into the first chamber; the cover is configured to at least partially surround the fan, thereby directing airflow flowing through the first chamber to the air outlet.

[0022] In a preferred embodiment of the power tool of the present invention, the housing includes a guide wall and a cross-wall. The guide wall surrounds the outer periphery of the fan and defines a guide port corresponding to the air outlet. The cross-wall is connected between the guide wall and the motor, separating the first chamber from the second chamber. A fluid opening connecting the first chamber and the second chamber is formed between the cross-wall and the partition plate.

[0023] In a second aspect, in another electric tool of the present invention, the electric tool includes a housing, a first grip portion, and a second grip portion. The housing extends in the front-to-back direction and is formed with a first connection area and a second connection area. The first grip portion is located on the top side of the housing, the front end of the first grip portion is connected to the first connection area, and the rear end of the first grip portion is connected to the second connection area, the front end of the first grip portion is higher than the rear end thereof, so that the first grip portion extends obliquely along a first axis. The second grip portion is located on the side of the housing, and the second grip portion includes a first fixing portion and a second fixing portion connected to the housing. The first fixing portion is at least partially located in the first connection area, and the second fixing portion is located between the first connection area and the second connection area in the front-to-back direction. The first fixing portion and the second fixing portion are connected to form a second axis, and the intersection of the first axis and the second axis is located within the first connection area when viewed from the left-right direction.

[0024] In the above technical solution, the power tool includes a housing, a first grip located on the top side of the housing, and a second grip located on the side of the housing. The second grip includes a first fixing portion and a second fixing portion connected to the housing, both of which are arranged with reference to the first connection area and the second connection area of ​​the housing where the first grip is connected. When viewed from the left and right directions, the intersection of the first axis and the second axis is located within the first connection area. This ensures that when a user holds the power tool with both hands, the angle between the two hands is neither too small to cause fatigue nor too large to limit the gripping area of ​​one hand and affect the user experience.

[0025] In a preferred embodiment of the above-mentioned electric tool of the second aspect of the present invention, when viewed from the left and right directions, the angle between the first axis and the second axis is between 40° and 75°, and the center of gravity of the entire chain saw is located in the area surrounded by this angle range.

[0026] In a preferred embodiment of the electric tool of the second aspect of the present invention, in an up-down direction perpendicular to the front-rear direction, the center of gravity of the electric tool is located between the first fixing portion and the second fixing portion.

[0027] In a preferred embodiment of the above-mentioned power tool according to the second aspect of the present invention, the power tool further comprises a functional assembly housed within the housing, the functional assembly comprising a motor, a gear assembly, and a gearbox. The motor is configured to drive a working assembly extending forward from the front end of the housing; the gear assembly is in transmission connection with the motor; and the gearbox is configured to house the gear assembly. The functional assembly comprises a contour region formed by the outer contours of the gearbox and the motor, and the second fixing portion is at least partially located within the contour region when viewed from the left and right sides. [Brief Description of the Drawings]

[0028] FIG1 is a front view of a power tool according to a preferred embodiment of the present invention;

[0029] FIG2 is a rear view of the power tool shown in FIG1 ;

[0030] FIG3 is a bottom view of the power tool shown in FIG1 ;

[0031] FIG4 is a schematic diagram of the power tool shown in FIG1 with part of the housing removed;

[0032] FIG5 is a partial cross-sectional view of the power tool shown in FIG3;

[0033] FIG6 is a schematic structural diagram of the motor and cover of the power tool shown in FIG1 ;

[0034] FIG7 is a front view of a second embodiment of the second gripping portion of the present invention;

[0035] FIG8 is a front view of a third embodiment of the second gripping portion of the present invention.

[0036] The meaning of the reference numerals in the figures:

[0037] Chain saw 100 First chamber 101

[0038] Second chamber 102 Third chamber 103

[0039] Effective gripping area Z housing 10

[0040] Main body 11 Battery pack mounting portion 12

[0041] First connection area 13 Second connection area 14

[0042] First housing 15 air inlet 151

[0043] Second housing 16 air outlet 161

[0044] Working component 20 guide plate 21

[0045] Functional component 30 Motor 31

[0046] Motor shaft 311 Controller 32

[0047] Gear assembly 33 output shaft 331

[0048] Gearbox 34 Contour area 35

[0049] Fan 36 First grip 40

[0050] Second gripping portion 50 First fixing portion 51

[0051] Second fixing portion 52 First section 53

[0052] Section 2 54 Section 3 55

[0053] Partitioning device 60 Partitioning plate 61

[0054] Cover body 62 guide wall 621

[0055] Cross-connecting wall 622 and guide port 623

[0056] First axis X1 Second axis X2

[0057] Third axis X3 Fourth axis X4 [Specific implementation method]

[0058] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0059] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. For example, terms such as "upper," "lower," "front," and "rear" indicating orientation or positional relationships are based solely on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the disclosure. They do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation. Therefore, they should not be construed as limiting the disclosure.

[0060] Referring to Figures 1 to 4 , the present invention relates to a power tool, with a chainsaw 100 being a preferred embodiment of the present invention. The chainsaw 100 includes a housing 10 extending generally in a front-to-rear direction, a working assembly 20 extending forward from the front end of the housing 10, a functional assembly 30 at least partially housed within the housing 10, and a battery pack (not shown) detachably connected to the rear end of the housing 10.

[0061] The working assembly 20 includes a guide plate 21 removably connected to the front end of the housing 10 and a chain (not shown) secured to the outer periphery of the guide plate 21. The functional assembly 30 includes a motor 31 for driving the working assembly 20, a controller 32 electrically connected to the motor 31, a gear assembly 33 drivingly connected to the motor 31, and a gear box 34 for housing the gear assembly 33. A battery pack powers the motor 31, driving the chain to rotate around the outer periphery of the guide plate 21, thereby achieving the cutting operation.

[0062] The motor 31 is an outer rotor motor and includes a motor shaft 311 extending in a left-right direction perpendicular to the front-back direction, a stator and a rotor connected to the motor shaft 311. The gear assembly 33 includes an output shaft 331 arranged parallel to the motor shaft 311, a large gear connected to one end of the output shaft 331, and a small gear connected to one end of the motor shaft 311. The small gear meshes with the large gear to transmit power.

[0063] The housing 10 includes a main body 11 for accommodating the functional assembly 30 and a battery pack mounting portion 12 located at the rear end of the main body 11. The battery pack mounting portion 12 extends at an angle to secure the battery pack at an angle to the rear end of the housing 10. The chainsaw 100 includes a first grip portion 40 and a second grip portion 50 for the user to grasp. The first grip portion 40 is located at the top side of the housing 10, separated from the main body 11 by a gripping area. The housing 10 includes a first connection area 13 connected to the front end of the first grip portion 40 and a second connection area 14 connected to the rear end of the first grip portion 40. The first connection area 13 is larger in the vertical direction than the second connection area 14, allowing the first grip portion 40 to extend at an angle along the first axis X1. The guide plate 21 of the working assembly 20 extends along the third axis X3. The first axis X1 of the first grip portion 40 forms an angle of 0-15° with the third axis X3 of the guide plate 21. The tilted first grip portion 40 facilitates user grip.

[0064] The second grip portion 50 is located on the side of the housing 10 and includes a first fixing portion 51 and a second fixing portion 52 connected to the housing 10, a first segment 53 extending laterally from the first fixing portion 51, a second segment 54 extending laterally from the second fixing portion 52, and a third segment 55 connecting the first segment 53 and the second segment 54. The first fixing portion 51 is at least partially located within the first connecting region 13, and the second fixing portion 52 is located between the first connecting region 13 and the second connecting region 14 in the front-to-back direction.

[0065] Specifically, the first fixing portion 51 and the second fixing portion 52 are connected to form a second axis X2, and the intersection of the first axis X1 and the second axis X2 is located within the first connection region 13. When viewed from a left-right direction perpendicular to the front-back direction, the first axis X1 and the second axis X2 intersect, and the angle A1 formed therebetween is greater than or equal to 40° and less than or equal to 85°. This arrangement ensures that when a user operates the chainsaw 100, the distance between the right hand gripping the first grip 40 and the left hand gripping the second grip 50 is neither too large nor too small, resulting in a relatively comfortable grip.

[0066] When a user uses the chainsaw 100 for cutting, they grip the saw with both hands. To adapt to different working angles or scenarios, they subconsciously select a more comfortable gripping area. This subconsciously selected gripping area is called the effective gripping area Z. Multiple tests have shown that the angle between the first axis X1 and the second axis X2, the position of the second fixing portion 52 fixed to the housing 10, and the position of the center of gravity G of the entire saw contribute to the size of the effective gripping area Z. The length of the effective gripping area Z decreases as the angle between the first axis X1 and the second axis X2 increases.

[0067] The following examples will be given with reference to Figures 1 to 8 when the second fixing portion 52 is in several different positions:

[0068] As shown in Figures 1 to 5, the functional component 30 is provided with a contour area 35, which is jointly constituted by the outer contours of the gear box 34 and the motor 31. When viewed from the left and right directions, the second fixed portion 52 is at least partially located within the contour area 35. At this time, the angle between the first axis X1 and the second axis X2 is between 40° and 75° (including the end points), and the center of gravity G of the entire chain saw 100 is located within the area surrounded by this angle range; in the up and down directions, the center of gravity G of the entire machine is located between the first fixed portion 51 and the second fixed portion 52. When the angle between the first axis X1 and the second axis X2 is 40°, the effective holding area Z includes the lateral holding area of ​​the first section 53, the bent holding area between the first section 53 and the third section 55, and the lateral holding area of ​​the third section 55 located above the center of gravity G. The user can choose a specific position to hold within the effective holding area Z according to different work scenarios. The user's palm is naturally tilted downward or upward at a certain angle, which is a relatively comfortable holding state, and the angle between the left and right hands will not be too small to affect the operating experience; when the angle between the first axis X1 and the second axis X2 is 75°, the effective holding area Z includes the lateral holding area of ​​the first section 53, the bent holding area between the first section 53 and the third section 55, and a small part of the lateral holding area of ​​the third section 55 close to the bent holding area. At this time, if the user holds on the third section 55, the palm of the left hand has a certain upward tilt angle, and the holding comfort is significantly lower than the above embodiment.

[0069] A more optimized solution, as shown in Figures 1 and 4, is shown in which the motor shaft 311 and the output shaft 331 are connected to form a fourth axis X4, the angle between the third axis X3 and the fourth axis X4 is acute, and the second fixing portion 52 is disposed on the front lower side of the motor shaft 311. Specifically, the center of the second fixing portion 52 is disposed between the motor shaft 311 and the output shaft 331 in the front-to-back direction. In this case, the angle between the first axis X1 and the second axis X2 is between 50° and 60° (inclusive). The effective gripping area Z includes the lateral gripping area of ​​the first segment 53, the bent gripping area between the first segment 53 and the third segment 55, and the lateral gripping area of ​​the third segment 55 located above the center of gravity G. The user can select a specific gripping position within the effective gripping area Z according to different working scenarios. The user's palm naturally tilted downward or upward at a certain angle is a relatively comfortable gripping state, and the angle between the left and right hands is not too small to affect the operating experience.

[0070] As shown in Figure 7, the second fixing portion 52 is positioned directly below the first fixing portion 51. In this case, the angle A2 between the first axis X1 and the second axis X2 is 85°. The effective gripping area Z includes the horizontal gripping area of ​​the first segment 53 and the curved gripping area between the first segment 53 and the third segment 55. Within this effective gripping area Z, the user's palm naturally tilts downward, providing a comfortable grip. If the second fixing portion 52 is moved further forward, the user's effective gripping area is limited to the first segment 53. When gripping the rest of the grip, the palm tilts downward and the wrist bends upward, which can easily lead to wrist soreness after prolonged use and a poor user experience.

[0071] As shown in Figure 8, the second fixing portion 52 is at least partially located within the contour area 35 of the motor 31 in the front-to-back direction. When the center of the second fixing portion 52 is flush with the rear end edge of the motor 31 in the front-to-back direction, the angle A3 between the first axis X1 and the second axis X2 is 45°. At this time, when viewed from the left and right directions, the center of gravity G of the chain saw 100 roughly coincides with the third section 55 of the second gripping portion 50. The effective gripping area Z includes the lateral gripping area of ​​the first section 53, the bent gripping area between the first section 53 and the third section 55, and the lateral gripping area of ​​the third section 55 located above the center of gravity G.

[0072] By setting the angle between the second axis X2 formed by connecting the first fixing part 51 and the second fixing part 52 of the second grip part 50 and the first axis X1 of the first grip part 40 to be between 40° and 85°, when the user operates the power tool with both hands, the angle between the two hands will not be too small to easily cause fatigue, nor will it be too large to limit the gripping area of ​​one hand and affect the user experience.

[0073] The chainsaw 100 also includes a tensioning device disposed on the other side of the housing 10 relative to the second grip 50, which is used to tension the chain. When tensioning, the user typically places the chainsaw 100 on its side on a tabletop, supported by the second grip 50. Therefore, the vertical length of the second grip 50 must be sufficient to stably support the entire device in a sideways position. In this embodiment, the first fixing portion 51 and the second fixing portion 52 are located on either side of the third axis X3 of the guide plate 21 in the vertical direction, respectively. This allows the chainsaw 100 to be stably placed on its side on a tabletop via the second grip 50 and the battery pack mounting portion 12.

[0074] As shown in Figure 5, the first fixing part 51 and the second fixing part 52 are fixed to the shell 10 by screws. A fixing hole is opened on the shell 10, and corresponding mounting holes are provided on the first fixing part 51 and the second fixing part 52. The screws pass through the fixing holes of the shell 10 from the inside of the shell 10 and into the mounting holes, thereby beautifying the appearance while preventing the screws from being exposed and rusting.

[0075] In the above embodiment, the second gripping portion 50 is configured as a straight connection structure between the first fixing portion 51 and the second fixing portion 52. In other embodiments, in order to increase the effective gripping area, the first fixing portion 51 and the second fixing portion 52 may also be configured as a curved structure, such as lateral bending in the left and right directions, oblique bending in the up and down directions, rotational bending in the front and back directions, etc., which will not be elaborated here.

[0076] Referring to Figures 1 to 5 , the housing 10 includes a first housing 15 and a second housing 16 connected to the first housing 15 . The first and second housings 15 and 16 are assembled to form a chamber for accommodating the functional assembly 30 . The chamber includes a first chamber 101 for accommodating the motor 31 , a second chamber 102 for accommodating the controller 32 , and a third chamber 103 for accommodating the gearbox 34 . The first chamber 101 and the second chamber 102 are fluidically connected. In the front-to-back direction, the first chamber 101 and the second chamber 102 are staggered.

[0077] Referring to Figures 2 and 3 , the housing 10 includes an air inlet 151 disposed on the side of the first housing 15 and an air outlet 161 disposed on the bottom surface of the second housing 16. The air inlet 151 and the air outlet 161 are in fluid communication, forming an airflow channel between the air inlet 151 and the air outlet 161. The second grip 50 is connected to the second housing 16. The air inlet 151 is disposed in the second chamber 102, and the air outlet 161 is disposed in the first chamber 101. In other words, the second chamber 102 is in fluid communication with the outside air through the air inlet 151, and the first chamber 101 is in fluid communication with the outside air through the air outlet 161.

[0078] As shown in Figures 5 and 6 , the functional assembly 30 further includes a fan 36 connected to one end of a motor shaft 311. The motor 31 and the controller 32 are located in the airflow channel between the air inlet 151 and the air outlet 161. The motor 31 drives the fan 36 to rotate, creating an air pressure difference between the inside and outside of the housing 10. Under the influence of the air pressure difference, outside air enters the second chamber 102 from the air inlet 151, passes through the controller 32, and then enters the first chamber 101. It then flows through the gap in the motor 31 and out of the housing 10 through the air outlet 161.

[0079] The air inlet 151 is located between the motor 31 and the battery pack in the front-to-back direction, and the controller 32 is located upstream of the motor 31 in the air flow channel and is arranged near the air inlet 151, as shown in Figures 2 and 5. In this embodiment, the motor 31 is placed horizontally in the first chamber 101, and the controller 32 is placed vertically in the second chamber 102 with one side of it basically adjacent to the air inlet 151. This allows the cooling airflow formed by the outside air to flow through the surface of the controller 32 immediately after entering the housing 10, thereby dissipating heat from the controller 32. To achieve a better heat dissipation effect, the size of the air inlet 151 in the vertical direction perpendicular to the front-to-back direction and the left-to-right direction in this embodiment is approximately the same as the height of the controller 32.

[0080] The motor 31 and controller 32 are staggered in the front-to-back direction. In the left-to-right direction, the controller 32 is located between the air inlet 151 and the motor 31. The fan 36 is located on the side of the motor 31 away from the controller 32, and the air outlet 161 is located near the fan 36. When viewed from the front-to-back direction, the controller 32 at least partially overlaps with the motor 31 or the battery pack. When viewed from the top-to-bottom direction, the controller 32 is located between the motor 31 and the battery pack, and is spaced apart from them. This allows for sufficient cooling space between the three main thermal structures: the controller 32, the motor 31, and the battery pack, preventing their proximity from affecting each other's cooling effects.

[0081] The chainsaw 100 includes a partition 60 disposed between the first chamber 101 and the second chamber 102. The partition 60 includes a partition plate 61 extending parallel to the controller 32 and a cover 62 that at least partially surrounds the fan 36. The partition plate 61 extends inward from the inner wall of the first housing 15, forming a passage for airflow between the partition plate 61 and the controller 32. The partition plate 61 extends in the left-right direction for at least half the left-right dimension of the controller 32 (i.e., the width of the controller 32). This is to guide air entering the air inlet 151 to flow over at least half of the surface of the controller 32, thereby improving the cooling effect of the controller 32. Furthermore, the left-right end of the partition plate 61 is spaced a certain distance from the motor 31, allowing air from the first chamber 101, after passing over the surface of the controller 32, to enter the first chamber 101 under the guidance of the partition plate 61, thereby cooling the motor 31.

[0082] Referring to Figures 5 and 6 , the cover 62 is detachably connected to the second housing 16 and includes a guide wall 621 surrounding the outer periphery of the fan 36 and a cross-wall 622 connected between the guide wall 621 and the motor 31. The guide wall 621 is provided with a guide port 623 corresponding to the air outlet 161. The guide wall 621, the cross-wall 622, and the partition plate 61 physically separate the first chamber 101 and the second chamber 102, allowing the hot airflow after passing through the motor 31 to flow directly out of the air outlet 161 under the guidance of the guide wall 621, rather than flowing back from the outer periphery of the motor 31 to the first chamber 101, causing the hot and cold airflows to merge. A fluid opening connecting the first chamber 101 and the second chamber 102 is formed between the cross-wall 622 and the partition plate 61. The airflow passing through the controller 32 enters the second chamber 102 through this fluid opening. In addition, the air outlet 161 is provided on the bottom surface of the second housing 16 , and the hot air flow passing through the motor 31 and flowing out from the air outlet 161 will not blow onto the user or affect the cutting operation.

[0083] As shown in Figure 4, the angle between the fourth axis X4 formed by the connection between the motor shaft 311 and the output shaft 331 and the third axis X3 extending from the guide plate 21 is an acute angle, that is, the motor 31 is arranged on the rear lower side or the rear upper side of the gear box 34, thereby reducing the length of the whole machine and improving the compactness of the structure; placing the motor 31 and the gear box 34 at an angle also expands the space between the motor 31 and the controller 32, thereby improving the heat dissipation performance of both; in addition, by setting the air inlet 151 between the motor 31 and the battery pack, the controller 32 is located in the air flow channel between the air inlet 151 and the air outlet 161 and is arranged close to the air inlet 151, thereby improving the heat dissipation effect of the whole machine.

[0084] The present invention is not limited to the above-described specific embodiments. Those skilled in the art will readily appreciate that many alternatives to the power tool of the present invention exist without departing from the principles and scope of the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. An electric tool, characterized in that: include: A housing (10) extending in a front-rear direction and having a first connection area (13) and a second connection area (14); a first gripping portion (40) located on the top side of the housing (10), the front end of the first gripping portion (40) being connected to the first connecting area (13), and the rear end of the first gripping portion (40) being connected to the second connecting area (14), the front end of the first gripping portion (40) being higher than the rear end thereof, so that the first gripping portion (40) extends obliquely along the first axis (X1); A second gripping portion (50) is located on a side of the shell (10), and the second gripping portion (50) includes a first fixing portion (51) and a second fixing portion (52) connected to the shell (10); wherein the first fixing portion (51) is at least partially located in the first connecting area (1), and the second fixing portion (52) is located between the first connecting area (13) and the second connecting area (14) in the front-to-back direction; and the first fixing portion (51) and the second fixing portion (52) are connected to form a second axis (X2); wherein, when viewed from a left-right direction perpendicular to the front-to-back direction, the first axis (X1) and the second axis (X2) intersect and an angle formed between the two is greater than or equal to 40° and less than or equal to 85°.

2. The electric tool according to claim 1, characterized in that: The second gripping portion (50) comprises: A first section (53) extending from the first fixing portion (51); a second section (54) extending from the second fixing portion (52); a third section (55) connecting the first section (53) and the second section (54); Wherein, the second gripping portion (50) comprises an effective gripping area (Z) located on at least one of the first section (53) and the third section (55), and the length of the effective gripping area (Z) decreases as the angle between the first axis (X1) and the second axis (X2) increases.

3. The electric tool according to claim 1, characterized in that: When viewed from the left and right directions, the intersection of the first axis and the second axis is located in the first connection area, and the angle between the first axis (X1) and the second axis (X2) is greater than or equal to 45° and less than or equal to 65°.

4. The electric tool according to claim 1, characterized in that: When viewed from the left and right directions, the angle between the first axis (X1) and the second axis (X2) is between 40° and 75°, and the center of gravity (G) of the entire chain saw (100) is located within the area surrounded by the angle range.

5. The electric tool according to claim 1, characterized in that: In the front-to-back direction, the center of gravity of the electric tool is located between the motor shaft (311) and the output shaft (331); and in the up-down direction perpendicular to the front-to-back direction, the center of gravity of the electric tool is located between the first fixing portion (51) and the second fixing portion (52).

6. The electric tool according to claim 1, characterized in that: The electric tool further comprises a functional component (30) which is accommodated in the housing (10), and the functional component (30) comprises: A motor (31) for driving a working assembly (20) extending forward from the front end of the housing (10); A gear assembly (33) drivingly connected to the motor (31); A gear box (34) for accommodating the gear assembly (33); The functional component (30) is provided with a contour area (35) formed by the outer contours of the gear box (34) and the motor (31), and when viewed from the left and right directions, the second fixing portion (52) is at least partially located within the contour area (35).

7. The electric tool according to claim 6, characterized in that: The motor shaft (311) of the motor (31) extends in the left-right direction; The output shaft (331) of the gear assembly (33) is arranged in parallel with the motor shaft (311); Wherein, in the front-to-back direction, the center of the second fixing portion (52) is located between the motor shaft (311) and the output shaft (331).

8. The electric tool according to claim 6, characterized in that: The working assembly (20) comprises a guide plate (21) extending along a third axis (X3); the first fixing portion (51) and the second fixing portion (52) are respectively located on both sides of the third axis (X3) in an up-down direction perpendicular to the front and rear.

9. The electric tool according to claim 8, characterized in that: The angle between the first axis (X1) and the third axis (X3) is between 0° and 15°.

10. The electric tool according to claim 8, characterized in that: In a plane parallel to the guide plate (21), a fourth axis (X4) is formed by passing through a center line of the motor shaft (311) and a center line of the output shaft (331), and an angle between the fourth axis (X4) and the third axis (X3) is an acute angle; and, in a plane parallel to the guide plate (21), a projection point of the second fixing portion (52) is located at a lower front side of the projection point of the motor shaft (311).

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