CN211671501U

CN211671501U - Garden tool

Info

Publication number: CN211671501U
Application number: CN201922217642.8U
Authority: CN
Inventors: 戴开超; 李立; 张陈中; 李海燕; 伍和坤
Original assignee: Nanjing Deshuo Industrial Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2018-12-11
Filing date: 2019-12-11
Publication date: 2020-10-16
Anticipated expiration: 2029-12-11
Also published as: CN211682566U; CN212045127U; WO2020119730A1; CN111300550B; CN211671502U; CN111300550A

Abstract

The utility model discloses a garden instrument, include: a functional element for implementing a tool function of the garden tool; a prime mover for driving the functional element; a housing including a main body portion surrounding a receiving space formed to receive at least a part of the prime mover and a main handle connected to the main body portion; the trigger is used for being operated by a user to start the garden tool; the garden tool further comprises: a trigger switch that is activated when the trigger is triggered by a user; the main handle is surrounded to form a handle space, the trigger switch is at least partially arranged in the handle space, and the main handle and the main body part form detachable connection. The utility model discloses a novel chain saw that main handle is removable, the user later stage maintenance of being convenient for, change switch module is provided.

Description

Garden tool

Technical Field

The invention relates to a garden tool.

Background

As a garden electric tool, the chain saw is widely applied to the fields of families, gardens and the like. The theory of operation of chain saw drives drive mechanism through power device, drives the saw chain through drive mechanism and cuts, and it is in actual operation in-process, must often operate switch module machine and start the motor operation, and long-time must lead to the fact the influence to the switch module, appears for example the card die, damages etc. consequently the chain saw of a convenient maintenance switch module is needed urgently now.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a garden tool with a detachable main handle.

In order to achieve the above object, the present invention adopts the following technical solutions: a garden tool, comprising: a functional element for implementing a tool function of the garden tool; a prime mover for driving the functional element; a housing including a main body portion surrounding a receiving space formed to receive at least a part of the prime mover and a main handle connected to the main body portion; the trigger is used for being operated by a user to start the garden tool; the garden tool further comprises: a trigger switch that is activated when the trigger is triggered by a user; the main handle is surrounded to form a handle space, the trigger switch is at least partially arranged in the handle space, and the main handle and the main body part form detachable connection.

Optionally, the garden tool further comprises: the auxiliary handle and the main handle form a connection which can be detached together with the main handle.

Optionally, the main handle comprises: the left handle part and the right handle part form a detachable connection.

Optionally, the main body portion is formed with: a left groove for a part of the left handle part to be inserted from the left side; and the right groove is used for embedding a part of the right handle part from the right side.

Optionally, the garden tool is a chain saw, the functional element is a chain, and the chain saw further comprises a guide plate, the guide plate extends forwards out of the machine shell along the front-back direction;

the main handle comprises a holding part at least partially extending along a central line, and the central line and the front-back direction are intersected to form an included angle which is larger than or equal to 14 degrees and smaller than or equal to 45 degrees.

Optionally, the trigger switch includes a push rod that can be triggered, the push rod extending substantially in the direction of the centerline.

Optionally, the garden tool further comprises:

the rotating piece is rotatably arranged in the handle space;

the rotating member includes:

a contact portion contacting the trigger, the rotating member being driven by the trigger to rotate in the grip space when the trigger rotates;

and a driving part for triggering the trigger switch when the rotating part rotates.

Optionally, the contact portion is formed with a contact surface that contacts the trigger, the contact surface being an arcuate surface.

Optionally, the trigger switch is a travel switch.

Optionally, the handle space is further provided with a fuse, an air inlet is formed on the handle shell, an air outlet is formed on the main body part, and a fan is arranged in the accommodating space; when the fan rotates, the airflow entering the accommodating space from the air inlet and flowing out from the air outlet flows through the fuse.

The invention has the advantages that: the utility model provides a main handle is removable, the user later stage maintenance of being convenient for, change switch module's novel garden instrument.

Drawings

FIG. 1 is a schematic perspective view of a chain saw according to the present embodiment;

FIG. 2 is a schematic perspective view of the chain saw of FIG. 1 in another orientation;

FIG. 3 is a schematic perspective view of the energy device and the host in FIG. 1;

FIG. 4 is a schematic perspective view of a main frame of the chain saw of FIG. 1;

FIG. 5 is a schematic perspective view of the host computer of FIG. 4 from another perspective;

FIG. 6 is a schematic plan view of the host computer of FIG. 4;

FIG. 7 is an exploded view of the host computer of FIG. 4;

FIG. 8 is a perspective view of a portion of the brake assembly of the host computer of FIG. 4;

FIG. 9 is a perspective view of a portion of the brake assembly of the host computer of FIG. 4;

FIG. 10 is an exploded view of the main handle of the main unit of FIG. 4;

FIG. 11 is an enlarged partial view of FIG. 10;

FIG. 12 is an exploded view of the main handle of the main unit of FIG. 4;

FIG. 13 is a perspective view of a mounting base of the chain saw of FIG. 1;

FIG. 14 is a schematic view of a portion of the structure of the mount of FIG. 13;

FIG. 15 is a schematic view of a portion of the mount of FIG. 13;

FIG. 16 is a schematic diagram of a portion of the structure of the host computer of FIG. 4;

FIG. 17 is a schematic cross-sectional view taken along A-A of FIG. 16;

FIG. 18 is a plan view of a portion of the internal structure of the host computer of FIG. 4;

FIG. 19 is an exploded view of a portion of the structure of the host computer of FIG. 4;

FIG. 20 is a plan view of a portion of the structure of the host computer of FIG. 4;

FIG. 21 is a schematic perspective view of the alarm device of the host of FIG. 4;

FIG. 22 is a schematic perspective view of a detection assembly in the alarm device of FIG. 21;

FIG. 23 is a plan view of the internal structure of the detector assembly of the alarm device of FIG. 21;

FIG. 24 is a cross-sectional view of the power cord and safety cord of FIG. 1;

figure 25 is a plan view of the brake band and stop of figure 8.

Detailed Description

The present application will now be described more fully hereinafter with reference to the accompanying drawings, in which specific embodiments of the invention are shown.

As shown in fig. 1, the garden tool includes a functional element for performing its function, in this embodiment, the chain saw 100, and the functional element is a chain 231.

For clarity of explanation of the technical solution of the present application, upper, lower, front, rear, left and right directions as shown in fig. 1 to 3 are defined.

Referring to fig. 1, a chainsaw 100 includes an energy source device 10, a connecting assembly, which is a power cord 30, and a main body 20; the energy source device 10 is used for providing energy for the host 20, and the energy source device 10 is specifically a battery pack 11; in order to reduce the weight of the host 20 and facilitate the operation of a user, the host 20 and the battery pack 11 are separately arranged, that is, the host 20 is electrically connected with the battery pack 11 through a power line 30, the power line 30 is respectively electrically connected with the host 20 and the battery pack 11 in a pluggable manner, the specific power line 30 comprises a first end 31 and a second end 32, the first end 31 is connected with the battery pack 11, the second end 32 is connected with the host 20, that is, the battery pack 11 supplies energy to the host 20 through the power line 30, so that the electrical connection between the host 20 and the battery pack 11 is realized; the main machine 20 comprises a switch assembly 21, a chain 231, a guide plate 233, a prime mover and a housing 24, wherein the prime mover is a motor 22, and the chain 231 is used for realizing the cutting function of the chain saw 100; the guide plate 233 serves to support and guide the movement of the chain 231; the motor 22 is used for driving the guide plate 233 to move; the housing 24 is formed with an accommodating cavity 241, the motor 22 is at least partially disposed in the accommodating cavity 241, and the guide plate 233 is partially disposed in the housing 24, i.e. the guide plate 233 can extend forward out of the housing 24; a switch assembly 21 is disposed at least partially within the housing 24, the switch assembly 21 being used to activate the motor 22.

Referring to fig. 2 to 7, the main body 20 further includes a sprocket 232, the sprocket 232 is connected to the chain 231 for driving the chain 231 to move; the fan 221 is disposed in the accommodating chamber 241, and the fan 221 is connected to the motor 22; circuit board 26 is fixedly disposed within housing 24 adjacent to motor 22; the heat dissipation substrate 25 is connected with the circuit board 26, and the heat dissipation substrate 25 is used for dissipating heat of the circuit board 26; the oilcan 27 is used for lubricating the guide plate 233 and the chain 231, and the oilcan 27 is at least partially disposed in the accommodating cavity 241.

Referring to fig. 1 to 7, the housing 24 includes a main body 242, a main handle 243 and a power plug-in interface 244; the main handle 243 is used for being held by a user, the main body 242 forms a receiving space for receiving the motor 22, and the power plug-in interface 244 is used for being electrically connected with the power cord 30. To make the electrical connection, as an alternative embodiment, the second end 32 of the power cord 30 forms a pluggable connection with the power insertion interface 244. For the convenience of the user operation and the balance of the main body 20, the main handle 243 is disposed on the upper side of the housing 24, the power plug-in interface 244 is disposed on the left side of the main handle 243, the guide plate 233 is disposed on the right side of the main handle 243, and the motor 22 is disposed below the main handle 243, which can also be understood as the main handle 243 disposed on the upper side of the main body 242. With this arrangement, the center of gravity of the main unit 20 is located below the main handle 243 of the motor 22, and when the user operates the main unit 20 while holding the main handle 243, the operation of the main unit 20 is smooth.

The power plug-in interface 244 is formed with a connection port 2441 opened backward, the second end 32 of the power cord 30 is plugged into the power plug-in interface 244 from the connection port 2441, specifically, an access terminal is arranged inside the connection port 2441, the second end 32 of the power cord 30 has an output terminal 321, and the battery pack 11 can provide power to the motor 22 through the output terminal 321 of the power cord 30 and the access terminal inside the connection port 2441.

Since the user may operate the chain saw 100 at a high altitude, it is necessary to reduce the size of the main body 20 in the front-rear direction for the convenience of the user's operation and carrying, and to avoid the situation where the power plug-in interface 244 is engaged with the power cord 30 and the power cord 30 is touched by the user by mistake, so that the contact failure is avoided, and therefore, the power plug-in interface 244 should be avoided being disposed at the end of the main body 20, and in the present embodiment, the housing 24 includes a front end surface 245 and a rear end surface 246. Motor 22 is disposed between a front end 245 and a rear end 246, front end 245 is located at the front side of housing 24, front end 245 forms a front port through which guide plate 233 extends, and rear end 246 is disposed at the rear side of front end 245, opposite to front end 245. Specifically at least the front end face

In order to ensure the balance of the whole device and improve the user experience, the connection point of the power plug-in interface 244 and the power cord 30 should be as close as possible to the center of gravity of the host 20, that is, the power plug-in interface 244 is disposed between the front end 245 and the rear end 246, specifically, the guide plate 233 extends in a first plane P1, the rear end 246 extends at least partially in a second plane P2, the first plane P1 is substantially perpendicular to the second plane P2, the distance from the power plug-in interface 244 to the second plane P2 is L1, and the distance of L1 is greater than or equal to 80mm and less than or equal to 100 mm.

To further reduce the size of the main body 20, facilitate user operation, and improve the balance of the main body 20, the main handle 243 includes a front end portion 2431, a rear end portion 2432, and a main grip portion 2433; in the fore-aft direction, the motor 22 is disposed between a front end 2431 and a rear end 2432, wherein the main handle 243 is coupled to the main body 242, the front end 2431 is fixedly coupled to or integrally formed with the main body 242, and the rear end 2432 is also fixedly coupled to or integrally formed with the main body 242, and the power plug-in interface 244 is disposed between the front end 2431 and the rear end 2432 so that the power plug-in interface 244 is adjacent to the center of gravity of the host 20. The main grip 2433 is a main grip area of the user, that is, the main grip 2433 is disposed between the front end 2431 and the rear end 2432, which can be understood as an area where the power plug-in interface 244 is located near the main grip 2433, and by the above arrangement, the power plug-in interface 244 of the power cord 30 can be prevented from interfering with the user operation.

Referring to fig. 7, the motor 22 includes a motor 22 shaft, the motor 22 shaft can rotate around the first axis 101, the motor 22 shaft drives the chain wheel 232 to drive the chain 231 to move along the guide plate 233, the fan 221 is mounted to the motor 22 shaft, and the motor 22 shaft drives the fan 221 to rotate. The first axis 101 of the shaft of the motor 22 is perpendicular to the first plane P1, the guide plate 233 extends forward out of the casing 24, that is, the motor 22 is disposed along the left-right direction, the center of gravity of the main unit 20 is substantially located at the motor 22, and for the position of the power plug-in interface 244 close to the center of gravity of the main unit 20, the smoothness of the movement of the main unit 20 is ensured, that is, the power plug-in interface 244 may be disposed at one end of the motor 22 along the first axis 101. In order to facilitate the heat dissipation of the fan 221 at the power plug-in interface 244, that is, the power plug-in interface 244 is disposed adjacent to the fan 221, specifically, the power plug-in interface 244 may be disposed at one end where the fan 221 is installed.

Referring to fig. 1, 13 to 15, the chainsaw 100 further includes a mounting base 40 for engaging with the engaging portion 40a of the battery pack 11, and the mounting base 40 is connected with a connecting mechanism 40b capable of connecting the mounting base 40 to a user's belt. The attachment mechanism 40b includes a first attachment member, which may be a hook 41, that is attachable to the user's belt in a first attachment manner and a second attachment member, which may be a securing strap 42, that is attachable to the user's belt in a second attachment manner. I.e. the mounting base 40 is inserted into the user's belt through the hook 41, so as to achieve the primary positioning of the mounting base 40, in this embodiment, the hook 41 is a metal member, and the fixing band 42 is a flexible member. In order to better fix the mounting base 40, the mounting base 40 further comprises an adjustable fixing band 42 and a fixing toggle 43 capable of rotating around the rotation axis 102, the fixing band 42 bypasses the waistband of the user and tensions the fixing band 42, and after the mounting base 40 is mounted on the waistband at a preset position, the fixing toggle 43 is rotated to lock the fixing band 42, so that the mounting base 40 is more stably mounted, and the situation that the mounting base 40 is separated from the waistband due to shaking caused by stress of the mounting base 40 is avoided. It should be noted that the preset position in this embodiment refers to a position where the user pulls the fixing strap 42 to fix the mount 40 to the user's belt, and the position may be any position selected by the user according to actual conditions, and is not a specific position. The number of the fixing bands 42 is not limited.

The mounting seat 40 comprises a locking assembly 44 and an ejecting assembly 45, wherein the locking assembly 44 is used for locking and releasing the battery pack 11, and the ejecting assembly 45 is used for ejecting the battery pack 11 when the locking assembly 44 releases the battery pack 11, protecting the pole piece, preventing the user from contacting the pole piece, and simultaneously facilitating the user to replace the battery pack 11. Specifically, the pop-up assembly 45 is movably connected with the upper cover plate 46 of the mounting base 40, the pop-up assembly 45 comprises an ejecting member 451 and an elastic member 452, the locking assembly 44 is movably connected with the lower cover plate 47 of the mounting base 40, and the locking assembly 44 comprises a toggle button 441 and a lock catch 442. Specifically, one end of the elastic element 452 is connected with the ejecting element 451, the other end of the elastic element 452 is connected with the upper cover of the mounting seat 40, when the battery pack 11 is inserted into the mounting seat 40, the ejecting element 451 is pressed by the battery pack 11 to move in a direction away from the pole piece, the contact piece is exposed to be connected with the battery pack 11, meanwhile, the lock catch 442 locks the battery pack 11, when the user pulls the toggle button 441 to release the battery pack 11, the toggle button 441 drives the lock catch 442 to realize unlocking, and the ejecting element 451 moves in a direction close to the pole piece under the action of the elastic element 452, so as to eject the battery pack 11. Wherein the ejector 451 is able to completely cover the pole piece.

Referring to fig. 1-3, the chainsaw 100 further includes a safety assembly 50, the safety assembly 50 including a safety element and a safety cord 52; the safety element is a safety valve 51, the safety valve 51 is used for connecting the host 20 and the safety rope 52, when the impact force applied to the safety valve 51 is greater than or equal to a preset safety value, the safety valve 51 is opened to disconnect the safety component 50 from the host 20, and meanwhile, the power line 30 is separated from the power plug-in interface 244 to protect the safety of a user.

The safety cord 52 is used to connect the host 20 and the user, and since the host 20 and the battery pack 11 are separately provided and the battery pack 11 is carried by the user, the safety cord 52 is specifically used to connect the host 20 and the user. The battery pack 11 is mounted to the mounting seat 40, the mounting seat 40 is carried by a user and generally fixed to a belt, the safety rope 52 is generally provided with an intermediate connecting member for connection, in the embodiment, two ends of the safety rope 52 are respectively provided with a safety valve 51 and a connecting ring for matching with the host 20 and the belt, wherein the safety rope 52 is connected with the host 20 in a safety manner through a safety valve 122 and is connected with the belt through the connecting ring, when the impact force applied to the safety valve 51 is greater than or equal to a preset safety value, the safety valve 51 is opened to disconnect the safety rope 52 from the host 20, and at the moment, the connection between the safety rope 52 and the belt is not disconnected; as an alternative embodiment, the safety rope 52 is connected with the main machine 20 in a safety way through the safety valve 51, and is connected with the waist belt through the connecting ring, when the impact force applied to the connecting ring is greater than or equal to a preset safety value, the connecting ring is opened, so that the connection between the safety rope 52 and the waist belt is disconnected, and at the moment, the connection between the safety rope 52 and the main machine 20 is not disconnected. The number of the safety valve 51 and the connection ring may be one or more, and is not limited herein. If a plurality of safety valves 51 or coupling rings are provided for coupling the safety cord 52 to the main unit 20, the preset safety value should be set smaller than that of one safety valve 51 or coupling ring; the plurality of safety valves 51 or the connection rings may cause a greater loss of momentum of the main unit 20 during falling, so that the main unit 20 may not be damaged when falling to the ground, thereby reducing user loss. It should be noted that the intermediate connection member for connecting the safety line 52 to the main unit 20 and the safety line 52 to the belt is not limited to the ring structure of the safety valve 51 and the connection ring in the present embodiment, and the specific structure thereof is not limited herein.

In the embodiment, the preset safety value is set to 15 pounds, that is, when the impact force applied to the safety valve 51 is greater than or equal to 15 pounds, or greater than 15 pounds, the safety assembly 50 is disengaged from the host 20.

As another alternative, the safety rope 52 may be provided with an intermediate connector for connecting the host 20 with the user, or may not be provided with an intermediate connector, and the safety rope 52 is directly connected to the host 10 and the user, and whether there is an intermediate connector or not, the safety rope 52 itself is made of a material characteristic, so that when the impact force applied to the safety rope 52 is greater than or equal to a preset safety value, the safety rope is disconnected and the user is disconnected from the host 20. It should be noted that the material of the safety rope 52 may be uniform, and at this time, any one of the safety ropes 52 is broken when the impact force is greater than or equal to the preset safety value; the material of the safety cord 52 may be non-uniform, so long as the impact force applied to a portion of the safety cord 52 is greater than or equal to a predetermined safety value, so that the connection between the main body 20 and the user is broken.

The power cord 30 connects the host 20 to the battery pack 11 on the user's body, and the safety cord 52 connects the host 20 to the user. The safety cord 52 and the power cord 30 may be disconnected or connected, and when they are disconnected, the maximum extension length of the safety cord 52 should be set to be smaller than that of the power cord 30, so as to ensure the safety of the user operation. When safety rope 52 and power cord 30 are not continuous, have two lines between host computer 20 and user, take place easily to interfere or twine and lead to problems such as power outage, operation unstability, in order to avoid above problem, in this application, safety rope 52 and power cord 30 link together for whole subassembly structure is retrencied more. Safety cord 52 and power cord 30 may be limited by a limit stop without contact, or may be nested or otherwise connected together. Specifically, in the present embodiment, the safety cord 52 is wound or wrapped around the surface of the power cord 30, the safety cord 52 extends along the extending direction of the power cord 30, and the length of the safety cord 52 is smaller than the length of the power cord 30. The safety cord 52 and the power cord 30 are made of non-elastic material, but the embodiment is not limited thereto.

The housing 24 is formed with a connection portion 24a, and the safety valve 51 is detachably connected to the connection portion 24 a. When the impact force applied to the safety valve 51 is greater than or equal to the preset safety value, the safety valve 51 is separated from the connecting portion 24 a.

As shown in fig. 1 and 24, the power supply line 30 includes: the safety rope comprises a wire core 30a and an insulating sleeve 30b, wherein the insulating sleeve 30b surrounds the wire core 30a, the safety rope 52 has a length direction, the safety rope 52 is provided with a through hole penetrating through the safety rope 52 along the length direction, and the insulating sleeve 30b penetrates through the safety rope 52.

Referring to fig. 16 and 17, the main unit 20 further includes a bracket 247, the bracket 247 is used for supporting the motor 22, the bracket 247 is fixedly disposed in the main body 242, that is, the bracket 247 is disposed in the accommodating space, and the bracket 247 divides the accommodating space into a left space 2411 and a right space 2412. The shaft of the motor 22 extends from the left space 2411 to the right space 2412, the stator of the motor 22 is located in the left space 2411, the sprocket 232 is disposed in the right space 2412, and the oil can 27, the fan 221 and the circuit board 26 are disposed in the left space 2411, so that the balance of the main unit 20 in the left-right direction is ensured.

A first airflow channel is disposed in the housing 24, and the first airflow channel is used for guiding a flow direction of a first heat dissipation airflow to achieve heat dissipation of the motor 22 and the circuit board 26, wherein the first airflow channel is defined by the bracket 247 and a side wall of the housing 24. The main air inlet 2424 for air to enter and the air outlet 2425 for air to flow out are formed in the casing 24, when the fan 221 rotates, the first heat dissipation air flow enters the casing 24 from the main air inlet and flows through the circuit board 26 in the left space 2411, meanwhile, the heat dissipation substrate 25 in the left space 2411 guides the first heat dissipation air flow to flow towards the first direction a, the first heat dissipation air flow is constrained by the side wall of the bracket 247, the first heat dissipation air flow flows through the stator of the motor 22 and is finally discharged from the air outlet 2425, and heat dissipation of the motor 22 and the circuit board 26 is achieved. Wherein the fan 221 may be a centrifugal fan 221. The path of the first heat dissipation airflow is located in the left space 2411 and cannot pass through the right space 2412, namely, the first heat dissipation airflow is prevented from being sucked into dust and wood dust generated when the chain wheel drives the chain to cut in the right space 2412 in the flowing process, and the service life of the chain saw is prolonged. The path through which the first heat dissipation airflow passes is a first flow path.

Referring to fig. 7 and 18, the housing 24 includes a main body 242 and a main handle 243, the motor 22 is disposed in the main body 242 along the first axis 101, and the circuit board 26 is fixedly disposed in the main body 242, wherein the circuit board 26 extends substantially in a fourth plane P4. In order to reduce the size of the host 20, the circuit board 26 is disposed adjacent to the motor 22, and the fourth plane P4 on which the circuit board 26 is disposed is substantially parallel to the first axis 101 of the motor 22, i.e. the fourth plane P4 on which the circuit board 26 is disposed is substantially perpendicular to the first plane P1, but when the motor 22 operates, a large amount of heat is inevitably generated, and in order to prevent the heat generated by the motor 22 from affecting the heat dissipation of the circuit board 26, therefore, the circuit board 26 is disposed adjacent to the motor 22, and the heat dissipation substrate 25 is disposed between the motor 22 and the circuit board 26, specifically, the vertical distance between the front and rear directions of the first axis 101 of the motor 22 and the fourth plane P4 on which the circuit board 26 is disposed is L2, wherein the vertical distance L2 is greater than or.

When the user operates the main body 20 to cut branches, a lot of dust and wood dust are inevitably generated, and in order to prevent the dust and wood dust from being sucked into the casing 24 in a large amount, the main air inlet 2424 should be disposed at a side away from the guide plate 233, and the main air inlet 2424 should be opened backward, that is, the main air inlet 2424 should be disposed at the left side of the casing 24 and the rear end 2432 of the main handle 243. Specifically, the primary air intake 2424 is disposed on the left housing portion 2421. For better heat dissipation from the circuit board 26, the primary air inlet 2424 is disposed adjacent to the circuit board 26 and the heat-dissipating substrate 25. In order to prevent the wind exhausted from the wind outlet 2425 from affecting the user operation, the wind outlet 2425 may be opened downward and disposed adjacent to the fan 221. Specifically, the main body 242 includes a left housing part 2421 and a right housing part 2422, and the main air inlet 2424 and the air outlet 2425 are disposed on the left housing part 2421. In the present embodiment, the power plug-in interface 244 is disposed adjacent to the fan 221, that is, the power plug-in interface 244 is disposed above the air outlet 2425.

Referring to fig. 19, the right housing part 2422 has an opening 2423 opposite to the main air inlet 2424, and the heat dissipating base plate 25 includes a plurality of fins, and a guiding channel for guiding the air flow is formed between two adjacent fins. The airflow entering the main air inlet 2424 inevitably brings in dust, wood dust and the like, which are accumulated between fins or fall to the bottom of the casing 24 to affect the operation of the main machine 20, specifically, the main air inlet 2424 is disposed at one end of the guide channel, and the opening 2423 is disposed at the other end of the guide channel. The housing 24 includes a cover 2429 for covering the opening 2423, and the cover 2429 is detachably connected to the left housing part 2421. In order not to affect the flow direction of the airflow in the casing 24, when the main machine 20 normally moves and works, the cover plate 2429 covers the opening 2423 to be in a closed state, so that the first heat dissipation airflow is prevented from flowing out of the opening 2423, when dust, wood chips and the like are accumulated between the fins and need to be cleaned, a user can detach the cover plate 2429, and the dust, the wood chips and the like on the heat dissipation substrate 25 are cleaned by an air gun or other methods. When the cover 2429 is detached, the case 24 is opened to form an opening 2423. The first flow path is open to the outside through the opening 2423. Further, one end of the opening 2423 may extend to the bottom of the cabinet 24 in the up-down direction, thereby facilitating the user to clean the dust, wood dust, etc. accumulated on the bottom of the cabinet 24.

The casing 24 further includes a fuse 234, the fuse 234 is disposed in the main handle 243, the fuse 234 is used for protecting the circuit, preventing a large current from occurring in the circuit and damaging elements in the host 20, and when the host 20 is in operation, the fuse 234 generates a large amount of heat, which causes the casing of the casing 24 to be melted and affects the use of the host 20. The main handle 243 is formed with a first auxiliary intake opening 2434, and the first auxiliary intake opening 2434 is opened near the fuse 234. Specifically, when the fan 221 rotates, the second heat dissipation airflow enters from the first auxiliary air inlet 2434 and flows through the fuse 234, and the centrifugal fan 221 generates a negative pressure by rotating, so that the second heat dissipation airflow is sucked into the left space 2411 along the casing of the main handle 243, enters the motor 22 along the side wall of the bracket 247, and is finally discharged from the air outlet. With the above arrangement, the motor 22 can be further cooled.

The housing 24 further includes a capacitor 235, the capacitor 235 is disposed in the main body 242, and when the host 20 is in operation, the capacitor 235 may generate a large amount of heat, which may cause the housing of the main body 242 to be melted, and may affect the use of the host 20. A second auxiliary air inlet 2426 is formed on the left housing part 2421, and the second auxiliary air inlet 2426 is opened near the capacitor 235. Specifically, when the fan 221 rotates, the third heat dissipation airflow enters the main body 242 from the second auxiliary air inlet 2426 and flows through the capacitor 235, and the centrifugal fan 221 rotates to generate a negative pressure, so that the third heat dissipation airflow is sucked into the motor 22 from the casing 24 and finally discharged from the air outlet. With the above arrangement, the motor 22 can be further cooled. That is, the first heat dissipation airflow, the second heat dissipation airflow, and the third heat dissipation airflow can all dissipate heat of the motor 22, thereby improving the heat dissipation efficiency of the motor 22.

Referring to fig. 8-9, the chain saw 100 further includes a brake assembly 60, which is frequently used by a user to stop when working aloft, so that ensuring that the main body 20 is locked reliably is a necessary condition for ensuring the safety of the user's operation. It is therefore desirable that the brake assembly 60 be relatively long-lived and be quickly removable from the main unit 20 to increase replaceability and serviceability. In this embodiment, the brake assembly 60 is disposed in the right space 2412 of the main frame 20, and the brake assembly cover 61 is disposed on the right side of the casing 24 and can be separated from the casing 24. The brake assembly 60 has no brake switch and gives a brake signal through the hall element 62 to generate a signal current, thereby cutting off the circuit. The hall element 62 is located inside the casing 24, and the magnet or other sensing element is mounted on the braking plate 63, so that the magnetic field is changed by the braking action to trigger the hall element 62 to generate a signal, thereby controlling the circuit board 26 to cut off the circuit. As an alternative embodiment, the brake assembly 60 includes a brake plate 63, the brake plate 63 has three legs, specifically, a first brake leg 631, a second brake leg 632 and a third brake leg 633, the first brake leg 631 drives the brake switch to cut off the circuit to perform electronic braking, the second brake leg 632 drives the brake band 65 to perform mechanical braking, and the third brake leg 633 is used for mounting, i.e., the third brake leg 633 is connected to the housing 24. The priority of the electronic brake is higher than that of the mechanical brake, that is, the mechanical brake is started after the brake switch cuts off the circuit. The first brake leg 631 and the second brake leg 632 are disposed on the right side of the main handle 243, the third brake leg 633 is disposed on the left side of the main handle 243, the hall element 62 is fixedly disposed in the main handle 243, the second brake leg 632 is adjacent to the hall element 62, and the second brake leg 632 is disposed with a sensing element such as a magnet. As another embodiment, the hall element 62 is fixedly disposed within the main body portion 242.

Referring to fig. 25, the brake assembly 60 further includes a linkage assembly 64, the linkage assembly 64 is used to connect the brake plate 63 and the brake band 65, i.e. to drive the brake plate 63, so that the brake plate 63 drives the linkage assembly 64, and the linkage assembly 64 drives the brake band 65 to perform braking. The brake band 65 includes: the brake block comprises a first section 651, a brake section 652 and a second section 653, wherein the first section 651 is linked to a brake plate 63 through a linkage assembly 64; a brake section 652 surrounds the sprocket 232 for braking; the second section 653 is connected with the housing 24, and the second section 653 to the brake section 652 extend upward along the up-down direction, so that the structural strength is prevented from being influenced by the brake band 65 which is bent for many times, and meanwhile, the space is saved. The brake assembly 60 further includes: and the limiting piece 66 is used for preventing the second section 653 from freely moving, the limiting piece 66 is fixedly connected with the casing 24, and the limiting piece 66 is connected with the second section 653 through a pin. Referring to fig. 10 to 12, the chainsaw 100 further includes a switch assembly 21, the switch assembly 21 being used to control the operation or stop of the motor 22, the switch assembly 21 being mounted to the main handle 243. The switch assembly 21 includes a trigger switch 211 and a trigger 212, the trigger 212 is mounted to the main handle 243, and the trigger switch 211 is electrically connected to the motor 22. The main grip 243 is surrounded by a grip space 2435, the trigger 212 is rotatably connected to the main grip 243 for user operation, and the trigger switch 211 is disposed in the main grip 243. When the user operates the trigger 212, the trigger 212 rotates around the first rotation axis 103, the trigger switch 211 is triggered from the initial position to the starting position, the trigger switch 211 is closed, the motor 22 runs, and after the user releases the trigger 212, the trigger 212 rotates from the starting position to the stopping position, the trigger switch 211 is disconnected, and the motor 22 stops. It should be noted that the starting position in this application refers to a position where the trigger switch 211 is closed to realize the operation of the motor 22 during the rotation of the trigger 212, that is, as long as the trigger switch 211 is closed during the rotation of the trigger 212, the position of starting the motor 22 may be the starting position; similarly, the stop position refers to a position where the trigger switch 211 is turned off during the rotation of the trigger 212 from the start position to the initial position, and may be the stop position.

The switch assembly 21 further includes a rotating member 213, and the rotating member 213 is rotatably disposed in the handle space 2435. The rotary member 213 can be actuated by the trigger 212 to close the trigger switch 211. Specifically, the trigger 212 rotates the rotating member 213 about the second rotation axis 104 about the first rotation axis 103, and activates the trigger switch 211, so that the chain saw 100 is started. In this embodiment, the rotating member 213 has a contact portion 2132 and a driving portion 2131, and the contact portion 2132 contacts with the trigger 212, it can be understood that the trigger 212 has a protrusion 2121 matching with the contact portion 2132. The driving unit 2131 is used to activate the trigger switch 211 when the rotation member 213 rotates. Trigger switch 211 includes a push rod 2111 that can be actuated, with push rod 2111 extending generally in the direction of centerline 105. When the user operates the trigger 212, the protrusion 2121 of the trigger 212 pushes the rotating element 213 to rotate around the second rotation axis 104, the driving portion 2131 of the rotating element 213 triggers the push rod 2111 during the rotation, and the push rod 2111 moves backward along the central line 105, so that the trigger switch 211 is closed, and the motor 22 is started. Wherein the trigger switch 211 may specifically be a travel switch.

The stroke of the sliding of the push rod 2111 is related to the rotational speed of the motor 22, i.e. the greater the distance the push rod 2111 moves backwards in the direction along the centre line 105, the faster the speed of the motor 22. In this embodiment, the distance that the push rod 2111 slides is related to the angle that the trigger 212 rotates, i.e., the greater the angle that the trigger 212 rotates, the greater the distance that the push rod 2111 moves backwards in the direction of the center line 105. to facilitate the trigger 212 to control the rotational speed of the motor 22, the contact portion 2132 that contacts the protrusion 2121 of the trigger 212 is formed with a contact surface that is configured as an arc-shaped surface, wherein the ratio of the angle that the trigger 212 rotates to the distance that the push rod 2111 slides is constant.

To ensure user safety, the chainsaw 100 is prevented from being misactuated. The switch assembly 21 also has a lock switch 214 that is operated by a user to unlock the lock switch 214 before the user operates the trigger 212.

Referring to fig. 10 to 12, when the user operates the chain saw 100, the switch assembly 21 is always used for turning on and off, so that the switch assembly 21 has a relatively long life and can be detached from the main frame 20, which is convenient for the user to maintain and replace at a later stage. To facilitate replacement of parts by the user, the main handle 243 is removably connected to the main body portion 242. Here, the term detachable means that the main handle 243 is detached from the main body 242 without destroying the original structure of the main handle 243 or the main body 242, and for example, the main handle 243 and the main body 242 are configured to be snap-fit, screw-fit, or screwed. The main handle 243 includes a left handle portion 2436 and a right handle portion 2437, and the left handle portion 2436 and the right handle portion 2437 are detachably connected, that is, the left handle portion 2436 and the right handle portion may also be connected by a snap connection, a threaded connection, a screw connection, or the like. In the present embodiment, the main body 242 is formed with a left groove 2427 and a right groove 2428, the left groove 2427 is used for a part of the left handle portion 2436 to be inserted from the left side, the right groove 2428 is used for a part of the right handle portion 2437 to be inserted from the right side, the left handle portion 2436 and the right handle portion 2437 and the left groove 2427 and the right groove 2428 are inserted in place to realize primary fixation, and further, the left handle portion 2436 and the right handle portion 2437 are tightened by screws. Specifically, the main body 242 has a left housing part 2421 and a right housing part 2422, wherein a left groove 2427 is formed on the left housing part 2421, a right groove 2428 is formed on the right housing part 2422, and the left handle part 2436 and the right handle part 2437 are respectively embedded in the left groove 2427 of the left housing part 2421 and the right groove 2428 of the right housing part 2422.

Referring to fig. 20, the main handle 243 includes a holding portion at least partially extending along the center line 105, the center line 105 intersects with the front-back direction to form a certain inclination angle α, and the inclination angle α is greater than or equal to 14 degrees and less than or equal to 45 degrees, so as to achieve cutting comfort when a user operates in an unusual working condition, such as high altitude or on a tree.

Referring to fig. 14, to facilitate gripping by a user, the chainsaw 100 further includes an auxiliary handle 70, the auxiliary handle 70 including a main auxiliary grip portion 71, the main auxiliary grip portion 71 extending generally in a fifth plane P5, wherein the fifth plane P5 is generally parallel to the first plane P1. The auxiliary handle 70 is connected to the housing 24, the auxiliary handle 70 further includes a first connecting portion 72 and a second connecting portion 73, the first connecting portion 72 and the main handle 243 form a detachable connection, and the second connecting portion 73 and the main body portion 242 form a detachable connection, that is, the first connecting portion 72 and the left handle portion 2436 may be a snap connection, a threaded connection, a screw connection, and the like, and the specific connection manner is not limited, and similarly, the second connecting portion 73 and the left housing portion 2421 may be a snap connection, a threaded connection, a screw connection, and the like. To facilitate the detachment of the main handle 243, the auxiliary handle 70 may be provided with a connection that is detached together with the main handle 243, and the first connection portion 72 is screwed to the left handle portion 2436.

Referring to fig. 21 to 23, the chain saw 100 further includes an alarm device 80 and an oil tube 28 connected to the oil can 27 for sending the oil can 27 to the guide plate 233, wherein the alarm device 80 is a device for detecting whether the oil can 27 is out of oil and displaying the remaining oil amount of the oil can 27. The alarm device 80 includes an alarm element for reminding the oilcan 27 of lack of oil and a detection assembly 81, the alarm element is an alarm lamp 82, the alarm lamp 82 is mounted to the rear end portion 2432 of the main handle 243 for the convenience of a user to observe the condition of the oilcan 27, and specifically, the alarm lamp 82 is mounted to the left handle portion 2436. The detecting component 81 is used for detecting whether oil exists in the oil pipe 28, specifically, the detecting component 81 is arranged adjacent to the oil can 27, the detecting component 81 comprises an optical sensor 811, a connecting pipe 812 and a detecting shell 813, the optical sensor 811 is used for detecting whether oil passes through the oil pipe 28, the connecting pipe 812 is used for connecting the oil pipe 28, the optical sensor 811 is arranged in the detecting shell 813, the connecting pipe 812 is at least partially arranged in the detecting shell 813, and the optical sensor 811 is arranged adjacent to the connecting pipe 812, specifically, the oil pipe 28 is provided with a first section 281 and a second section 282, the connecting pipe 812 is connected with the first section 281 and the second section 282, namely, the optical sensor 811 detects whether oil passes through the connecting pipe 812 and converts light energy into an electric signal to be sent to the circuit board 26, the circuit board 26 receives the electric signal, and the circuit board 26.

It is also understood that the alarm device 80 includes a connecting tube 812, a detecting element and an alarm lamp 82, the detecting element is disposed near the connecting tube 812, oil passes through the detecting connecting tube 812, and the resulting information is converted into an electrical signal and transmitted to the circuit board 26, the circuit board 26 receives the electrical signal, and the circuit board 26 controls the alarm lamp 82 according to the electrical signal.

In order to facilitate the user to observe the amount of oil in the oil can 27, in the present embodiment, the motor 22 is disposed between the oil can 27 and the circuit board 26, and it is understood that the oil can 27 is disposed on the front side of the motor 22 and the circuit board 26 is disposed on the rear side of the motor 22 in the front-rear direction.

Light sensor 811 is including light emitting component and receiving element, light emitting component is used for the emission light, the receiving part is used for receiving the light of light emitting component transmission, light emitting component and receiving element set up the both sides at connecting pipe 812 respectively, when there is not oil in connecting pipe 812, the light that light emitting component sent is dispersed, receiving element can not receive sufficient light, then the oil tank is in the state of lacking oil this moment, alarm lamp 82 shows lack of oil signal, when there is oil in connecting pipe 812, light is gathered by the oil circuit refraction, receiving element receives sufficient light, then the oil tank is in the state of having oil this moment, alarm lamp 82 shows there is the oil signal. In this embodiment, the warning lamp 82 is an LED lamp that flashes when the tank is in a low oil condition and turns off when the tank is in a high oil condition.

In order to avoid the influence of light passing through the oil pipe 28 on the detection assembly 81 and ensure the accuracy of the detection structure, in the present embodiment, the oil pipe 28 is configured as a non-transparent member, and the connection pipe 812 is configured as a transparent member, i.e., light cannot penetrate through the oil pipe 28 and affect the detection assembly 81.

In order to avoid dust from entering and affecting the detection assembly 81, and also to facilitate replacement and maintenance of the detection assembly 81 by a user at a later stage, the detection housing 813 includes a first housing 8131, a second housing 8132, and a third housing 8133, the first housing 8131 is connected with the second housing 8132 in a clamping manner to form a detection space, wherein at least a portion of the connection pipe 812 is fixedly disposed in the detection space, the optical sensor 811 is fixedly disposed in the detection space, specifically, the connection pipe 812 and the optical sensor 811 are fixedly connected with the first housing 8131, the second housing 8132 is connected with the first housing 8131 and then disposed in the third housing 8133, wherein the first housing 8131 and the third housing 8133 are fixedly connected or integrally formed, and the length of the third housing 8133 in the front-back direction and the left-right direction is greater than the length of the first housing 8131 and the length of the second housing 8132, that is, i.e., a gap is formed between the third housing 8133 and the first housing.

Because the battery pack 11 and the host 20 are separately disposed, the user works at high altitude, the battery pack 11 is generally disposed behind the user, and in order to avoid the situation that the user needs to detach the battery pack 11 to observe the electric quantity of the battery pack 11, the main handle 243 further includes an electric quantity display lamp 83, and the specific electric quantity display lamp 83 is disposed adjacent to the alarm lamp 82, that is, the electric quantity display lamp 83 is disposed at the rear end 2432 of the main handle 243.

Referring to fig. 5 and 6, in the left-right direction, the main grip portion 2433 is at least partially symmetrical about a third plane P3, the third plane P3 is a middle plane of the main grip portion 2433, and it can be understood that the left handle portion 2436 and the right handle portion 2437 are symmetrical about the third plane P3. The guide plate 233 extends in a first plane P1, wherein the first plane P1 is substantially parallel to the third plane P3, the guide plate 233 is disposed at the right side of the third plane P3, the motor 22, the oil can 47, the circuit board 26, the power plug-in interface 244 and the like are disposed at the left side of the main handle 243, and the auxiliary handle 70 is disposed at the side away from the guide plate 233 for safety reasons, that is, the auxiliary handle 70 is disposed at the right sprocket of the third plane P3. Since the weight of the guide plate 233 is relatively heavy with respect to the main body 20, in order to balance the main body 20 right and left, the guide plate 233 should be disposed adjacent to the center of gravity of the main body 20, and at the same time, in order to facilitate cutting by the user and improve the handling performance, the main handle 243 should be disposed close to the guide plate 233, and specifically, the distance L3 between the first plane P1 and the third plane P3 should be 35mm or more and 55mm or less. The user holds the main handle 243 of the main unit 20 with the right hand, and the left hand can be placed on the auxiliary handle 70, that is, the left hand is used for being at least partially located on the left side of the third plane P3, so as to facilitate the user to observe the oil amount of the oil tank and the electric quantity of the battery pack 11, that is, the alarm lamp 82 and the electric quantity display lamp 83 are both arranged on the left side of the main handle 243, it can be understood that the alarm lamp 82 and the electric quantity display lamp 83 are both arranged on the left side of the third plane P3, and meanwhile, in order to facilitate the connection between the circuit board 26 and the alarm lamp 82 and the electric quantity display lamp 83, the alarm lamp 82 and the electric quantity display lamp 83 are arranged adjacent to the circuit board 26, and specifically, the alarm lamp 82 and the electric quantity display lamp 83 are both arranged on the rear end portion 2432 of the main handle 243, that is, in the front and rear directions.

The foregoing shows and describes the basic principles, essential features and advantages of the application. It should be understood by those skilled in the art that the above-described embodiments are not intended to limit the present application in any way, and all technical solutions obtained by means of equivalents or equivalent changes fall within the protection scope of the present application.

Claims

1. A garden tool, comprising:

a functional element for implementing a tool function of the garden tool;

a prime mover for driving the functional element;

a housing including a main body portion surrounding a receiving space formed to receive at least a part of the prime mover and a main handle connected to the main body portion;

a trigger for operation by a user to activate the garden tool;

the method is characterized in that:

the garden tool further comprises:

a trigger switch activated when the trigger is triggered by a user;

the main handle is surrounded to form a handle space, the trigger switch is at least partially arranged in the handle space, and the main handle and the main body part form detachable connection.

2. The gardening tool according to claim 1, wherein:

the garden tool further comprises:

and the auxiliary handle and the main handle form a connection which can be detached together with the main handle.

3. The gardening tool according to claim 1, wherein:

the main handle includes: the left handle part and the right handle part form a detachable connection.

4. The gardening tool according to claim 3, wherein:

the main body portion is formed with:

a left groove for a part of the left handle portion to be inserted from the left side;

a right groove for a portion of the right grip portion to be inserted from the right side.

5. The gardening tool according to claim 1, wherein:

the garden tool is a chain saw, the functional element is a chain, and the chain saw further comprises a guide plate which extends forwards out of the machine shell along the front-back direction;

6. The gardening tool according to claim 1, wherein:

the trigger switch includes a push rod that can be triggered, the push rod extending substantially in the direction of the centerline.

7. The gardening tool according to claim 1, wherein:

the garden tool further comprises:

the rotating piece is rotatably arranged in the handle space;

the rotating member includes:

a contact portion which is in contact with the trigger, and which rotates in the grip space by being driven by the trigger when the trigger rotates;

and a driving part which triggers the trigger switch when the rotating part rotates.

8. The gardening tool according to claim 7, wherein:

the contact part is provided with a contact surface which is in contact with the trigger, and the contact surface is an arc surface.

9. The gardening tool according to claim 1, wherein:

the trigger switch is a travel switch.

10. The gardening tool according to claim 1, wherein:

the handle space is also provided with a fuse, an air inlet is formed on the handle shell, an air outlet is formed on the main body part, and a fan is arranged in the accommodating space; when the fan rotates, the airflow which enters the accommodating space from the air inlet and flows out from the air outlet flows through the fuse.