WO2024067391A1 - 一种链锯 - Google Patents

一种链锯 Download PDF

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Publication number
WO2024067391A1
WO2024067391A1 PCT/CN2023/120649 CN2023120649W WO2024067391A1 WO 2024067391 A1 WO2024067391 A1 WO 2024067391A1 CN 2023120649 W CN2023120649 W CN 2023120649W WO 2024067391 A1 WO2024067391 A1 WO 2024067391A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
motor
chain saw
handle
pcb board
Prior art date
Application number
PCT/CN2023/120649
Other languages
English (en)
French (fr)
Inventor
黄舒
张林高
Original Assignee
格力博(江苏)股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202222565658.XU external-priority patent/CN218604329U/zh
Priority claimed from CN202222565618.5U external-priority patent/CN218604102U/zh
Priority claimed from CN202321884529.5U external-priority patent/CN220571067U/zh
Priority claimed from CN202321873960.XU external-priority patent/CN220545577U/zh
Application filed by 格力博(江苏)股份有限公司 filed Critical 格力博(江苏)股份有限公司
Publication of WO2024067391A1 publication Critical patent/WO2024067391A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00Forestry
    • A01G23/02Transplanting, uprooting, felling or delimbing trees
    • A01G23/08Felling trees
    • A01G23/091Sawing apparatus specially adapted for felling trees

Definitions

  • the invention belongs to the technical field of electric tools, and in particular relates to a chain saw.
  • Electric chain saws use batteries to power the drive motor, which drives the chain to rotate. They are often used in felling trees, pruning branches, etc. In the use of chain saws, problems such as large vibration, difficulty in gripping, and easy wear of gears often occur.
  • the object of the present invention is to provide a chain saw, the chain saw comprising:
  • a housing comprising a central housing, a motor housing and a handle housing, the motor housing being arranged obliquely upward at the tail of the central housing, the handle housing being arranged obliquely downward at the tail of the central housing, and a hollow structure being arranged between the motor housing and the handle housing;
  • the cutting assembly is arranged on the front side of the central shell, and the axis of the cutting assembly intersects with the axis of the handle shell, and the intersection is located in the handle shell.
  • the axis of the cutting assembly intersects with the axis of the motor housing, and the intersection is located in the central housing, and the axis of the handle housing intersects with the axis of the motor housing, and the intersection is located in the motor housing.
  • the central housing, the motor cover and the handle housing are an integrated structure.
  • an air inlet is provided on the motor cover, and the air inlet is located at the hollow structure.
  • an air outlet is provided near the top of the motor housing.
  • soft glue is provided on the motor cover, and a gripping area is provided on a side of the motor cover opposite to the hollow structure.
  • it also includes:
  • a drive assembly the drive assembly being mounted in the motor housing;
  • a transmission assembly which is installed in the central housing and is respectively connected to the driving assembly and the cutting assembly;
  • a power supply assembly is arranged at the tail of the handle housing, and the power supply assembly is electrically connected to the drive assembly.
  • a switch is provided in the handle housing, and the switch, the drive assembly and the power supply assembly are electrically connected via a wire.
  • the wire is led out from the power supply assembly, passes through the inside of the handle housing and is connected to the switch, and extends into the motor housing to be connected to the drive assembly.
  • a first protective plate is further provided above the cutting assembly, and one end of the first protective plate is rotatably connected to the central shell.
  • a second protective plate is further provided below the handle assembly, and the second protective plate is fixedly connected to the bottom of the central shell.
  • a tension block is slidably mounted on one side of the housing, and a knife plate is arranged on the tension block, and a side cover is also arranged on the side of the housing where the tension block is arranged;
  • the locking knob is mounted on the side of the side cover away from the housing and is passed through a locking bolt in sequence. Through the housing, the blade and the side cover to be threadedly connected with the locking knob;
  • a spiral wheel is rotatably mounted on the side cover, and a crescent-shaped through hole is provided on the spiral wheel.
  • a gradient portion is provided on the outer circumference of the spiral wheel, and the gradient portion contacts the tension block;
  • the tensioning knob is rotatably mounted on the outer side of the locking knob, and is adapted to the crescent-shaped through hole through a crescent-shaped protrusion to engage with the spiral wheel. Rotating the tensioning knob drives the spiral wheel to rotate, thereby driving the tensioning block to move forward and backward, and then driving the knife plate for tensioning.
  • a slide groove is provided on a side of the housing close to the side cover, a pin is installed in the slide groove, and the tension block is slidably installed on the pin and is located in the slide groove.
  • a clamping groove is provided at one end of the slide groove, one end of the pin shaft is inserted into the inner wall of the slide groove, and the other end is clamped in the clamping groove, and a spring is sleeved on the pin shaft, and the spring is located between the tensioning block and the inner wall of the slide groove into which the pin shaft is inserted.
  • a first connecting member is provided at one end of the tensioning block and a second connecting member is provided at the other end, the first connecting member is fixedly connected to the knife plate, and one end of the second connecting member passes through the knife plate and the side cover to contact the spiral wheel.
  • a nut is embedded in the locking knob and is threadedly connected to the locking bolt via the nut.
  • a groove is provided on the side cover, the tensioning knob is located in the groove, and a plurality of protrusions are provided at intervals on the outer circumference of the tensioning knob, and a leaf spring is installed in the accommodating cavity, and the leaf spring is located between the inner wall of the groove and the outer wall of the tensioning knob.
  • a locking handle is further included, wherein the locking handle is rotatably connected to the locking knob, and a plurality of angle positions are provided on the locking knob to fix the locking handle.
  • the present invention also proposes a chain saw, comprising: a shell, the shell comprising a handle shell, a accommodating cavity is formed at the bottom of the handle shell, a PCB board is installed in the accommodating cavity, and the PCB board is a brushless PCB board or a brushed PCB board; wherein, first positioning ribs are provided on the front and rear sides of the accommodating cavity, and second positioning ribs are provided on the other two sides, the brushless PCB board is fixedly installed in the accommodating cavity by the first positioning ribs, and the brushed PCB board is fixedly installed in the accommodating cavity by the second positioning ribs.
  • the shell further includes a motor cover, in which a motor is installed.
  • the motor is a brushless motor
  • the motor is a brushed motor.
  • a cable is further included, one end of the cable is electrically connected to the PCB board, and the other end of the cable extends through the handle housing to the motor housing and is electrically connected to the motor.
  • the housing includes a first housing and a second housing, and the first housing and the second housing are fixedly connected to form the handle housing and the motor cover.
  • auxiliary air inlets are provided on the first shell and the second shell at locations corresponding to the accommodating cavity, and the auxiliary air inlets are communicated with the accommodating cavity.
  • a wire clamping groove is provided on the inner wall of the first shell or the second shell located at the handle shell portion, and the cable is fixed in the wire clamping groove.
  • a cutting assembly is further included.
  • the cutting assembly includes a knife plate and a knife chain. One end of the knife plate is connected to the housing, and the knife chain is arranged around the knife plate.
  • the knife chain includes guide teeth, the tooth thickness of the guide teeth is set between 0.04 inches and 0.05 inches, and the pitch of the knife chain is set between 0.2 inches and 0.4 inches.
  • the product ratio of the knife chain is set at 406 mm 3 to 450 mm 3 between.
  • the blades of the knife chain are right-angle teeth.
  • the present invention also provides a chain saw, comprising: a housing, wherein a motor is installed in the housing;
  • a transmission assembly comprising a driving wheel, a driven wheel and an output shaft, wherein the driving wheel is connected to the motor, the output shaft is installed in the housing, and the driven wheel is installed on the output shaft;
  • a cutting assembly connected to the output shaft, wherein the motor drives the transmission assembly to drive the cutting assembly to work;
  • the driving wheel is a cylindrical gear
  • the teeth of the driven wheel are arranged on the end surface of the driven wheel
  • the meshing surface between the driving wheel and the driven wheel is a plane.
  • bearing installation positions are provided in the first housing and the second housing, bearings are installed at both ends of the output shaft, and the bearings are located in the bearing installation positions.
  • the motor includes a motor bracket, and the motor bracket is fixedly connected to the first shell and the second shell by fixing screws.
  • the motor includes a motor bracket, and a motor bracket mounting groove is formed in the first shell and the second shell, and the motor bracket is located in the motor bracket mounting groove.
  • the driven wheel is a crown gear.
  • a groove is formed on the top of the shell, and the groove is located at one end of the shell close to the cutting assembly, and one end of the protective plate is located in the groove.
  • a lubrication device is further included.
  • the lubrication device is installed on the output shaft.
  • the lubrication device includes an automatic oil pump. The oil outlet of the automatic oil pump points to the cutting assembly.
  • the motor is an outer rotor motor, and the diameter of the motor is set Between 30mm and 40mm, the core length of the motor is set between 20mm and 40mm.
  • the whole weight of the handheld chain saw is set between 1 kg and 1.1 kg.
  • the present invention proposes a chain saw, which separates a motor cover and a handle shell from each other by setting a hollow structure, so that the vibration of the handle grip can be effectively reduced, and an air inlet is set at the hollow structure, so that heat dissipation can be achieved while effectively preventing debris from entering the interior of the chain saw and causing damage to the chain saw.
  • the center of gravity of the chain saw is moved backward in the present application, and the chain saw is made to fit an ergonomic angle during use, so as to improve the user's comfort and facilitate force and grip.
  • the present invention provides a chain saw, which integrates a tensioning knob and a locking knob together to facilitate user operation, realizes the integrated functions of chain plate tensioning and pressing in a tensioning and locking structure, and realizes tool-free adjustment.
  • the present invention provides a chain saw, which forms an accommodating cavity provided with a first positioning rib and a second positioning rib in a handle shell, so that the handheld chain saw can be adapted to install a brushed PCB board and a brushless PCB board, and a corresponding motor is selected according to the type of its PCB board, so that the handheld chain saw can be adapted to different types of motors, thereby improving the applicability of the handheld chain saw.
  • the present invention provides a chain saw, which eliminates the influence of the axial error of the driving wheel, improves the matching accuracy of the driving wheel and the driven wheel, and prevents gear noise, tooth jamming, tooth jumping, slipping or wear by designing the driving wheel in a transmission assembly as a cylindrical gear, the driving wheel meshes with the driven wheel, and the meshing surface is a plane.
  • FIG. 1 is a schematic structural diagram of a chain saw according to an embodiment of the present invention.
  • FIG. 2 is a front view of a chain saw according to an embodiment of the present invention.
  • FIG. 3 is an enlarged schematic diagram of the structure at point A in FIG. 2 .
  • FIG. 4 is a schematic structural diagram of a chain saw according to an embodiment of the present invention from another angle.
  • FIG. 5 is an enlarged schematic diagram of the structure at point B in FIG. 4 .
  • FIG. 6 is a schematic diagram of the internal structure of a chain saw according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an exploded structure of a chain saw according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a housing of a chain saw according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of the structure of a locking knob and a tensioning knob in one embodiment of the present invention.
  • FIG. 10 is a schematic diagram of the exploded structure of a locking knob and a tensioning knob according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the structure of a chain saw in one embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a chain saw at another angle according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of the internal structure of a chain saw in one embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a first housing in a chain saw according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of the structure of a receiving chamber in a chain saw according to an embodiment of the present invention.
  • FIG. 16 is a schematic diagram of the installation structure of a brushless PCB board in one embodiment of the present invention.
  • FIG. 17 is a schematic diagram of the installation structure of a brushed PCB board in one embodiment of the present invention.
  • FIG. 18 is a schematic diagram of a wire groove structure in a handle housing in one embodiment of the present invention.
  • FIG. 20 is a schematic diagram of the installation of a brushed motor and a brushed PCB board in one embodiment of the present invention.
  • FIG. 21 is a schematic diagram of a partial structure of a knife chain in a chain saw according to an embodiment of the present invention.
  • FIG. 22 is a partial top view of a knife chain in a chain saw according to an embodiment of the present invention.
  • FIG. 23 is a schematic diagram of the structure of a brushless motor and a transmission assembly in one embodiment of the present invention.
  • FIG. 24 is a schematic diagram of the exploded structure of a transmission assembly in one embodiment of the present invention.
  • FIG. 25 is a schematic diagram of the structure of the brushless motor installation in one embodiment of the present invention.
  • FIG. 26 is a schematic diagram of the structure of a housing when a brushless motor is installed in one embodiment of the present invention.
  • FIG. 27 is a schematic diagram of the structure of a housing when a brush motor is installed in one embodiment of the present invention.
  • FIG. 28 is a schematic diagram of the explosion structure of the first protective plate in one embodiment of the present invention.
  • the present invention proposes a chain saw to improve the existing chain saw in which the motor and the handle are roughly on the same horizontal line, the vibration generated during the operation of the motor is not conducive to the grip of the handle, and the way of holding the chain saw is not conducive to the human body exerting force, and its structure does not conform to the principles of ergonomics.
  • the chain saw 100 includes a shell 10, a drive assembly 20, a transmission assembly 30, a power supply assembly 40 and a cutting assembly 50.
  • the drive assembly 20 and the transmission assembly 30 are arranged in the shell 10, and the cutting assembly 50 is arranged on the front side of the shell 10, and the drive assembly 20 is connected to the transmission assembly 30.
  • the transmission assembly 30 is connected to the cutting assembly 50, and the transmission assembly 30 is driven by the drive assembly 20, thereby driving the cutting assembly 50 to perform cutting work.
  • the power supply assembly 40 is electrically connected to the drive assembly 20, and the power supply assembly 40 is externally connected to a power source or a battery pack to provide a power source for the drive assembly 20.
  • the housing 10 includes a first housing 11 and a second housing 12.
  • the first housing 11 and the second housing 12 are fixedly connected together to form a receiving cavity.
  • the drive assembly 20 and the transmission assembly 30 are installed in the receiving cavity.
  • the housing 10 includes a central housing 101, a motor housing 102 and a handle housing 103. That is, the first housing 11 and the second housing 12 both include a central housing portion, a motor housing portion and a handle housing portion.
  • the central housing The body 101, the motor housing 102 and the handle housing 103 are an integrated structure, wherein the hollow housing 101 is the part for installing the transmission assembly 30, the motor housing 102 is the part for installing the drive assembly 20, and the handle housing 103 is the handle part.
  • the battery pack is plugged into the end of the handle housing 103 to connect with the power supply assembly 40 to provide a power source for the drive assembly 20.
  • the transmission assembly 30 is installed in the central housing 101, and the drive assembly 20 is installed in the motor cover 102.
  • the output shaft of the drive assembly 20 extends into the central housing 101 and is connected to the transmission assembly 30 installed in the central housing 101.
  • the cutting assembly 50 is installed on the front side of the central housing 101 and is partially located in the central housing 101 to be connected to the transmission assembly 30.
  • the transmission assembly 30 is driven by the drive assembly 20, and then the cutting assembly 50 is driven to perform mowing operations.
  • a switch 1030 is installed inside the handle housing 103, and a power supply assembly 40 is installed at the tail of the handle housing 103.
  • the power supply assembly 40 is connected to an external power source, and the power supply assembly 40, the drive assembly 20 and the switch 1030 are electrically connected.
  • the switch 1030, the drive assembly 20 and the power supply assembly 40 are electrically connected via a wire.
  • the wire is led out from the power supply assembly 40, passes through the inside of the handle housing 103 and is connected to the switch 1030, and extends into the motor housing 102 to be connected to the drive assembly 20.
  • the drive assembly can be a brushed motor or a brushless motor, and can share a set of molds, that is, the motors can be interchangeable, and similarly, the corresponding control boards therein can also be interchangeable.
  • the control board is installed in the housing 10 to control the drive assembly 20.
  • the motor cover 102 is disposed obliquely upward at the tail of the central shell 101.
  • the handle shell 103 is disposed obliquely downward at the tail of the central shell 101.
  • a hollow structure 104 is disposed between the motor cover 102 and the handle shell 103. The setting of the hollow structure 104 separates the motor cover 102 and the handle shell 103 from each other, thereby effectively reducing the vibration at the handle grip and improving the comfort and safety of the user.
  • the axis L1 of the cutting assembly 50 intersects with the axis L2 of the handle housing 103 at one point, and the intersection is located inside the handle housing 103.
  • the axis of the cutting assembly 50 is the center line along the length direction (i.e., the X direction) of the cutting assembly 50
  • the axis of the handle housing 103 is the center line along the arrangement direction of the handle housing 103, so that the center of gravity of the chain saw 100 is moved backward, and the chain saw 100 is adapted to the ergonomic angle during use to improve the user's comfort.
  • the axis L1 of the cutting assembly 50 is further intersected with the axis L3 of the motor housing 102, and the intersection is located inside the central housing 101, and the axis L2 of the handle housing 103 intersects with the axis L3 of the motor housing 102, and the intersection is located inside the motor housing 102.
  • a power supply assembly 40 is provided at the tail of the handle assembly 103, the bottom surface of the power supply assembly 40 is a planar structure, so that the chain saw 100 can be placed relatively vertically when a battery pack is installed or not.
  • an air outlet 1021 is provided at a position near the top of the motor housing 102, and a first air inlet 1022 is also provided on the motor housing 102.
  • the first air inlet 1022 is provided at a hollow structure 104 between the motor housing 102 and the handle housing 103.
  • a cooling fan 23 is also installed at the tail of the drive assembly 20. The cooling fan 23 is close to the top of the motor housing 102. When the cooling fan 23 is started, cooling air enters the motor housing 102 from the first air inlet 1022, flows through the drive assembly 20, and then flows out from the air outlet 1021.
  • a plurality of second air inlets 1023 are provided around the motor housing 102.
  • the second air inlet 1023 is tiltedly arranged on the motor housing 102, that is, a baffle 1024 formed by the shell wall of the motor housing 102 is present at the second air inlet 1023, which can improve the heat dissipation effect and prevent debris from entering the interior of the chain saw, thereby avoiding damage to the chain saw.
  • soft glue 1025 is provided on the motor cover 102, and a gripping area 1026 is provided on the side of the motor cover 102 opposite to the hollow structure 104, so that when cutting branches, the gripping area 1026 is equivalent to a front handle and is ergonomically suitable. That is, the motor cover 102 is obliquely upwardly arranged at the tail of the central shell 101, and the gripping area 1026 is provided on the side of the motor cover 102 opposite to the hollow structure 104, so that when cutting branches, the angle of the front handle is ergonomically suitable, suitable for exerting force, stable grip, and comfortable hand feel.
  • soft glue 1025 is provided on the motor cover 102 to increase hand feel comfort and increase friction, while reducing vibration.
  • a tensioning mechanism is provided on a side of the second shell 12 away from the first shell 11, and the tensioning mechanism is connected to the knife plate 51 in the cutting assembly 50.
  • a tensioning block is slidably installed on one side of the shell, and the knife plate 51 is slidably installed together with the second shell 12 through the tensioning block, and a side cover is also provided on the side of the shell where the tensioning block is provided.
  • the tensioning mechanism is provided on the side cover, and is used to manually adjust the forward and backward movement of the knife plate 51 in the cutting assembly 50, thereby adjusting the tension of the chain knife in the cutting assembly 50, so that the tension of the knife chain can be adjusted without carrying tools, thereby reducing the need for tools in conventional chain saws to achieve the tension of the cutting assembly 50.
  • a side cover 14 is provided on the side of the second housing 12 away from the first housing 11.
  • a receiving chamber is formed between the side cover 14 and the housing 10.
  • the blade 51 in the cutting assembly is partially located in the receiving chamber.
  • a locking knob 141 is installed on the side cover 14.
  • a locking bolt 142 is provided on the second housing 12. One end of the locking bolt 142 is fixedly connected to the second housing 12, and the other end passes through the second housing 12, the blade 51 and the side cover 14 in sequence to be connected with the locking knob.
  • the button 141 is threadedly connected.
  • a nut 143 is embedded in the locking knob 141, and the nut 143 is threadedly connected to the locking bolt 142.
  • a locking handle 144 is also installed on the locking knob 141.
  • the locking handle 144 is rotatably connected to the locking knob 141, and the locking handle 144 is directly pressed into the locking knob 141 for positioning, for example, by plastic deformation of a plastic part.
  • a plurality of angle positions are provided on the locking knob 141 to fix the locking handle 144, for example, there is a position at 0° and 90°, the 0-degree position is to ensure that when the tool is used, the locking handle 144 is received in the receiving groove of the locking knob 141, and the locking handle 144 does not swing back and forth, and the 90-degree position is to ensure that when the locking handle 144 is rotated, the handle is always kept at 90 degrees for easy rotation.
  • a tensioning mechanism is provided on the side cover 14 for manually adjusting the forward and backward movement of the blade plate 51 in the cutting assembly, thereby adjusting the tension of the cutting assembly in the cutting assembly, so that the tension of the blade chain can be adjusted without carrying tools, thereby reducing the need for tools to achieve the tension of the cutting assembly in conventional chain saws.
  • a groove 1401 is provided on the side cover 14, and a tensioning knob 153 is installed in the groove 1401.
  • the tensioning knob 153 is rotatably connected to the side cover 14, and the locking knob 141 is rotatably installed in the middle of the tensioning knob 153.
  • the blade 51 in the cutting assembly is slidably connected to the housing 10 via a tension block 151.
  • a slide groove 121 is provided on the side of the second housing 12 close to the side cover 14.
  • the tension block 151 is slidably installed in the slide groove 121.
  • a pin 122 is installed in the slide groove 121, and the tension block 151 is slidably installed on the pin 122.
  • a card slot 123 is provided at one end of the slide groove 121. One end of the pin 122 is inserted into the inner wall of the slide groove 121, and the other end is inserted into the card slot 123.
  • the tension block 151 is first installed on the pin 122, and then the pin 122 is installed in the slide groove 121.
  • This way of installing the pin 122 makes its structure stable, and no other means are required to install the pin 122.
  • the fixing pin shaft 122 is installed by using parts, which saves costs and optimizes the complexity of the structure. It is also convenient for personnel to install, and no tools are required for installation. It can be installed manually, which greatly saves installation time.
  • a limit groove 124 is further provided above the slide groove 121, and the tensioning block 151 is partially located in the limit groove 124 to play a limiting role when the tensioning block 151 slides, thereby preventing the tensioning block 151 from excessively moving, thereby causing the knife plate 51 to be over-tensioned and causing damage.
  • a first connecting member 1511 and a second connecting member 1512 are provided on the tensioning block 151.
  • the first connecting member 1511 is provided at one end of the tensioning block 151, and the first connecting member 1511 is fixedly connected to the knife plate 51, and is used to drive the knife plate 51 to move synchronously when the tensioning block 151 moves.
  • the second connecting member 1512 is provided at the other end of the tensioning block 151, and one end of the second connecting member 1512 passes through the oblong through groove on the knife plate 51 and the side cover 14, and is used to contact the spiral wheel 152, so as to push the tensioning block 151 to move through the spiral wheel 152.
  • the rotating wheel 152 is rotatably mounted on the side cover 14, and a tensioning knob 153 is rotatably mounted in the groove 1401. Specifically, the rotating wheel 152 is rotatably mounted at the bottom of the groove 1401 and is located between the tensioning knob 153 and the side cover 14.
  • a gradient portion 1521 is provided on the outer circumference of the rotating wheel 152. The gradient portion 1521 is a portion where the outer circumference radius component of the rotating wheel 152 is increased.
  • the gradient portion 1521 contacts the second connecting member 1512 on the tensioning block 151 during the rotation of the rotating wheel 152, and the tensioning block 151 is pushed to move as the rotating wheel 152 rotates, and then the blade 51 is driven to move under the driving action of the first connecting member 1511, thereby achieving the tensioning of the cutting assembly.
  • the rotating wheel 152 is, for example, a metal part to ensure its service life and reliability.
  • a crescent-shaped through hole 1522 is provided on the circling wheel 152, and a tension knob 153 is provided to match the crescent-shaped through hole 1522.
  • the crescent-shaped protrusion 1531 is located in the crescent-shaped through hole 1522, so that the tensioning knob 153 and the rotating wheel 152 are engaged together, and the tensioning knob 153 is rotatably installed on the outside of the locking knob 141, that is, the tensioning knob 153 is rotatably installed on the side cover 14, and the rotating wheel 152 is driven to rotate by rotating the tensioning knob 153, thereby driving the tensioning block 151 to move.
  • a spring 125 is sleeved on the pin 122, and the spring 125 is located between the tensioning block 151 and the inner side wall of the slide groove 121 into which the pin 122 is inserted.
  • the tensioning knob 153 is rotated clockwise to drive the spiral wheel 152 to move clockwise, and the spiral wheel 152 rotates so that the gradient portion 1521 on its outer circumference touches the tensioning block, driving the tensioning block 151 to move linearly in the axial direction of the pin 122, that is, the tensioning block 151 drives the knife plate 51 to move translationally while the tensioning block 151 moves translationally, so as to realize the tensioning structure.
  • a leaf spring 154 is installed on the inner wall of the groove 1401, and a plurality of protrusions 1532 are arranged at intervals on the outer circumference of the bottom surface of the tensioning knob 153.
  • the leaf spring 154 is located between the inner wall of the groove 1401 and the outer wall of the tensioning knob 153.
  • the tensioning knob 153 is rotated, the plurality of protrusions 1532 are pressed on the leaf spring 154 at intervals. That is, the leaf spring 154 performs elastic deformation movement in the process of transforming back and forth on the protrusions 1532 and in the gaps between the protrusions 1532, thereby generating sound and damping feel, which is convenient for accurately adjusting the tension.
  • the tensioning knob and the locking knob are combined together to facilitate user operation, thereby realizing the integrated functions of chain plate tensioning and compression in the tensioning and locking structure and realizing tool-free adjustment.
  • a leaf spring is arranged between the tensioning knob and the side cover so that the leaf spring can undergo elastic deformation during rotation, thereby generating sound and damping feel, which facilitates accurate adjustment of the tension.
  • a brushless motor and a brushless PCB board can be used together, or only a brushed motor and a brushed PCB board can be used together, and the two cannot be compatible at the same time, resulting in a problem of low adaptability.
  • a accommodating cavity 1031 is formed at the bottom of the handle housing 103, and a PCB board is installed in the accommodating cavity 1031.
  • positioning ribs for fixing the PCB board are provided on the side walls of the accommodating cavity 1031.
  • a first positioning rib 1032 is provided on the front and rear sides of the accommodating cavity 1031, and a second positioning rib 1033 is provided on the other two sides, wherein the side of the handle housing 103 close to the cutting assembly 50 is defined as the front side, and the side away from the cutting assembly 50 is defined as the rear side.
  • the PCB board can be a brushless PCB board 105 or a brushed PCB board 106.
  • the brushless PCB board 105 is positioned by the first positioning rib 1032 and fixed in the accommodating cavity 1031; when the PCB board is a brushed PCB board 106, the brushed PCB board 106 is positioned by the second positioning rib 1033 and fixed in the accommodating cavity 1031, so that the first positioning rib 1032 and the second positioning rib 1033 with different matching are used in the same shell, which can be compatible with the size difference of the brushed PCB board 106 and the brushless PCB board 105, realize the interchangeability of the brushed motor 22 and the brushless motor 21, and has high adaptability.
  • the wall thickness of the brushless PCB board 105 is relatively large, an enclosing rib position is adopted for fixing, that is, the first positioning rib 1032 surrounds and fixes the brushless PCB board 105; the wall thickness of the brushed PCB board 106 is relatively thin, so the side of the brushed PCB board 106 is fixed by inserting the design of two ribs, that is, the second positioning rib 1033 includes an upper rib position 10331 and a lower rib position 10332, and there is a gap between the upper rib position 10331 and the lower rib position 10332.
  • the brushed PCB board 106 is inserted into the gap between the upper rib position 10331 and the lower rib position 10332, and the fixed installation is achieved by the cooperation of the upper rib position 10331 and the lower rib position 10332, so that the handheld chain saw can be adapted to install the brushed PCB board and the brushless PCB board, thereby improving the applicability of the handheld chain saw.
  • the driving assembly 20 is a motor, which is installed in the motor housing 102.
  • the motor is a brushless motor 21
  • the motor is a brushed motor 22
  • the handheld chain saw can be adapted to install the brushed PCB board 106 and the brushless PCB board 105
  • the corresponding motor is selected according to the type of the PCB board, so that the handheld chain saw can be adapted to different types of motors, thereby improving the applicability of the handheld chain saw.
  • a cooling fan 23 is provided at the tail of the motor, and the cooling fan 23 is close to the top of the motor cover 102.
  • an air outlet 1021 is provided on the motor cover 102.
  • auxiliary air inlets 1034 are provided on the first shell 11 and the second shell 12 at positions corresponding to the accommodating cavity 1031.
  • the auxiliary air inlet 1034 is connected to the accommodating cavity 1031 so that the brushed PCB board and the brushless PCB board can share the air inlet to achieve auxiliary heat dissipation and natural heat dissipation of the PCB board, thereby further improving the heat dissipation effect of the chain saw 100.
  • the motor and the PCB board are electrically connected via a cable 202.
  • One end of the cable 202 is electrically connected to the PCB board, and the other end passes through the interior of the handle housing 103 and extends into the motor housing 102 and is electrically connected to the motor.
  • a wire clamping groove 2021 is provided on the inner wall of the first housing 11 or the second housing 12 located at the handle housing 103.
  • the cable 202 is fixed in the wire clamping groove 2021.
  • the wire clamping groove 2021 is provided in the housing 10 for fixing the cable connected between the PCB board and the motor to adapt to the cable routing of different motor types, thereby avoiding the danger or unreliability caused by the messy cables.
  • a second lead groove 2023 is provided on the first housing 11 or the second housing 12 near the rear side of the brushed motor 22.
  • the cable 202 extends from the rear side of the brushed motor 22 to the brushed PCB board 106, and passes through the second lead groove 2023 and the cable clamping groove 2021 in sequence.
  • the first lead groove 2022, the second lead groove 2023 and the cable clamping groove 2021 are simultaneously located on the first housing 11 or simultaneously located on the second housing 12, and the first lead groove 2022 and the second lead groove 2023 are located below the motor to adapt to the cable routing of different motor types, thereby avoiding danger or unreliability caused by messy cables.
  • the cutting assembly 50 includes a knife plate 51 and a knife chain 52.
  • One end of the knife plate 51 is connected to the housing 10.
  • the knife chain 52 is arranged around the knife plate 51.
  • the knife chain 52 includes a guide tooth.
  • the tooth thickness of the guide tooth is set between 0.04 inches and 0.05 inches.
  • the pitch of the knife chain is set between 0.2 inches and 0.4 inches.
  • the tooth thickness of the guide tooth is preferably 0.043 inches, and the pitch of the knife chain is preferably 0.3 inches. That is, under the same length of knife chain, the number of cutting teeth of the knife chain with a small pitch is increased, which is conducive to improving its cutting efficiency.
  • the product ratio of the knife chain is set between 406mm3 and 450mm3 , wherein the product ratio refers to the product of the height H of the knife chain, the pitch of the knife chain and the width W of the knife chain, so as to improve its cutting speed, which is suitable for fast operation of small tools.
  • the blade of the knife chain is preferably Right-angle teeth or small right-angle teeth enable it to have a faster cutting speed and cutting efficiency.
  • the knife chain preferably adopts a narrow-cut blade, which not only reduces weight but also reduces rebound, can improve cutting efficiency, and also makes the cutting of wood chip fibers less.
  • a accommodating cavity for installing a PCB board is formed in the handle shell, and a first positioning rib for fixing a brushless PCB board and a second positioning rib for fixing a brushed PCB board are respectively provided on the side walls of the accommodating cavity, so that the handheld chainsaw can be adapted to install a brushed PCB board and a brushless PCB board, and a corresponding motor is selected according to the type of its PCB board, so that the handheld chainsaw can be adapted to different types of motors, thereby improving the applicability of the handheld chainsaw, that is, it can realize the mutual conversion between the brushless motor and the brushed motor in the same casing, and is compatible with the brushed PCB board and the brushless PCB board, with high adaptability, easy use and simple structure.
  • the motor in order to eliminate the influence of the axial error of the driving wheel, improve the matching accuracy of the driving wheel and the driven wheel, and prevent problems such as gear noise, stuck teeth, skipped teeth, slipping or wear, the motor includes a motor bracket 24, and the motor bracket 24 is fixedly connected to the first housing 11 and the second housing 12 through a fixing screw 25.
  • the motor bracket 24 can be set as a square plate, for example, the fixing screw 25 can be fixed on the square plate, and the cylindrical head of the fixing screw 25 is fixed in the housing 10, that is, the fixing screw 25 is engaged and fixed by the action between the first housing 11 and the second housing 12, so as to achieve the fixed installation of the motor.
  • a semi-limiting groove 16 is provided on the inner side of the first housing 11 and the second housing 12.
  • the motor may be an outer rotor brushless motor.
  • the first housing A motor bracket mounting groove 17 is formed in the housing 11 and the second housing 12, and the motor bracket 24 is located in the motor bracket mounting groove 17.
  • convex ribs 171 are formed on the upper and lower sides of the motor bracket mounting groove 17, and the upper and lower sides of the motor bracket 24 are in contact with the convex ribs 171, that is, the upper and lower sides of the motor bracket 24 are limited by the convex ribs 171 on the upper and lower sides of the motor bracket mounting groove 17, and the left and right sides are limited by the first housing 11 and the second housing 12, respectively, so that the motor is fixedly installed in the housing 10.
  • the motor is, for example, a brushed motor or an inner rotor brushless motor, wherein the motor bracket 24 of the brushed motor can be set to be an integrated structure with the motor.
  • the transmission assembly 30 includes a driving wheel 31, a driven wheel 32 and an output shaft 33.
  • the driving wheel 31 is connected to the motor
  • the output shaft 33 is installed in the housing 10
  • the driven wheel 32 is installed on the output shaft 33 and meshes with the driving wheel 31.
  • the driving wheel 31 is, for example, a cylindrical gear
  • the teeth of the driven wheel 32 are designed on its end face, that is, the tooth line of the driven wheel 32 is located on its end face, and the driving wheel 31 meshes with the driven wheel 32 and the meshing surface is a plane, so that the driving wheel 31 is allowed to have a certain amount of movement in the axial direction, thereby improving the matching accuracy of the driving wheel and the driven wheel.
  • the driving wheel 31 can be a cylindrical spur gear or a cylindrical bevel gear, and its tooth line is preferably spiral.
  • the driven wheel 32 adopts a crown gear, preferably a crown gear, and its tooth line is spiral.
  • the crown gear meshes with the cylindrical gear with a spiral tooth line, and the meshing surface is a plane. Therefore, when the driving wheel 31 has axial movement, it can also ensure that the driving wheel 31 and the driven wheel 32 are automatically meshed, so that the matching accuracy of the driving wheel 31 and the driven wheel 32 is not affected by the axial error of the driving wheel 31, and the assembly is simple. At the same time, the matching accuracy of the driving wheel 31 and the driven wheel 32 is improved, and the problems of gear noise, tooth jamming, tooth jumping, slipping or wear are prevented.
  • the first housing 11 and the A bearing installation position 109 is provided in the second housing 12 , and bearings 34 are installed at both ends of the output shaft 33 , and the bearings 34 are located in the bearing installation position 109 to ensure the installation accuracy of the output shaft 33 .
  • the chain saw 100 also includes a first protective plate 107.
  • the first protective plate 107 is arranged above the cutting assembly 50 and is adapted to the cutting assembly 50.
  • One end of the first protective plate 107 is rotatably connected to the top of the shell 10 to protect the user during the cutting process.
  • a groove 1071 is provided at the top of the housing 10, and the groove 1071 is located at one end of the housing 10 close to the cutting assembly 50.
  • One end of the first protective plate 107 is located in the groove 1071.
  • a rotating shaft 1072 is provided at one end of the first protective plate 107 that is rotatably connected to the housing 10.
  • a torsion spring 1073 is sleeved on the rotating shaft 1072. Both the rotating shaft 1072 and the torsion spring 1073 are located in the groove 1071.
  • the rotation angle of the first protective plate 107 is limited by the housing 10, that is, when the first protective plate 107 contacts the housing 10, a limit is generated, thereby preventing the first protective plate 107 from continuing to rotate.
  • the structure is simple and does not require other limit structures.
  • the rotation angle of the first guard plate 107 is set between 0° and 110°, wherein at 0°, the first guard plate 107 is parallel to the blade in the cutting assembly 50.
  • the first guard plate 107 is a movable component and the first guard plate 107 involves safety protection, it requires sufficient structural strength. Therefore, in this embodiment, a bushing 1074 is added to the first guard plate 107, and the bushing 1074 is set between the rotating shaft 1072 and the guard plate 107, and the two cooperate to rotate, thereby increasing the service life and structural strength.
  • the rotating shaft 1072 is, for example, a screw, and the bushing 1074 is provided on the first guard plate 107.
  • the screw is arranged in the first protective plate 107 , and passes through the gasket 1075 and the bushing 1074 in sequence and is connected to the housing 10 to install the first protective plate 107 and the housing 10 , and realizes rotation under the cooperation of the bushing 1074 .
  • the chain saw 100 further includes a second protective plate 108, which is fixedly disposed at the bottom of the housing 10 and is located below the handle housing 103 to protect the user during the cutting process.
  • the second protective plate 108 is an open handle protective plate, that is, the handle protective plate extends from the housing, and the other end is hollowed out to form an open state, so that the protective plate can be made as small as possible under the condition of meeting safety regulations, and the weight can be reduced.
  • the handle protective plate is open and easy to hold, and the hand feel is comfortable and there is no sense of restraint.
  • the chain saw 100 also includes a lubricating device, which is installed on the output shaft 32.
  • the lubricating device includes an automatic oil pump, and the oil outlet of the automatic oil pump points to the cutting assembly 50 to achieve automatic lubrication.
  • the chain can also be manually lubricated by dripping oil on the chain through an adapted oil dropper bottle.
  • the motor is an outer rotor motor
  • the diameter of the motor is set between 30mm and 40mm
  • the core length of the motor is set between 20mm and 40mm
  • the weight of the handheld chainsaw is set between 1kg and 1.1kg.
  • the weight of the handheld chainsaw is between 1kg and 1.05kg
  • the motor is installed with a 6-inch blade and a knife chain
  • the weight of the handheld chainsaw is between 1.05kg and 1.1kg
  • the peak power of the handheld chainsaw can reach 500w
  • the linear speed of the knife chain can reach 8m/s, so that the chain saw achieves the characteristics of light weight, high power, high torque and high linear speed.
  • the driving wheel in the transmission assembly is designed as a cylindrical gear, the driving wheel is meshed with the driven wheel, and the meshing surface is a plane, thereby eliminating the influence of the axial error of the driving wheel and improving the
  • the matching accuracy of the driving wheel and the driven wheel is improved to prevent problems such as gear noise, tooth jamming, tooth jumping, slipping or wear.
  • the structure of the transmission component makes the assembly of the motor in this machine very simple and convenient.

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Abstract

一种链锯(100),包括:壳体(10),壳体(10)包括中央壳体(101)、斜向上设置在中央壳体(101)的尾部的电机罩壳(102)和斜向下设置在中央壳体(101)的尾部的手柄壳体(103),且电机罩壳(102)与手柄壳体(103)之间设置有镂空结构(104);切割组件(50),设置在中央壳体(101)的前侧,且切割组件(50)的轴线与手柄壳体(103)的轴线相交,且交点位于手柄壳体(103)内。该装置将电机罩壳和手柄壳体相互分离,使得其能有效地降低手柄握持处的震动,同时还使得该链锯的重心后移,以使得该链锯在使用过程中适合人体工学的角度,以提高用户的舒适感。

Description

一种链锯 技术领域
本发明属于电动工具技术领域,具体涉及了一种链锯。
背景技术
电动链锯通过电池组对驱动马达供电从而带动链条转动,常用于砍伐树木、修剪树枝等场景。在链锯的使用过程中,常出现振动大不容易抓握、齿轮易磨损等问题。
发明内容
为解决上述技术问题及实现其他相关目的,本发明的目的在于提供一种链锯,所述链锯包括:
壳体,所述壳体包括中央壳体、电机罩壳和手柄壳体,所述电机罩壳斜向上设置在所述中央壳体的尾部,所述手柄壳体斜向下设置在所述中央壳体的尾部,且所述电机罩壳与所述手柄壳体之间设置有镂空结构;
切割组件,设置在所述中央壳体的前侧,且所述切割组件的轴线与所述手柄壳体的轴线相交,且交点位于所述手柄壳体内。
在本发明的一个实施例中,所述切割组件的轴线与所述电机罩壳的轴线相交,且交点位于所述中央壳体内,所述手柄壳体的轴线与所述电机罩壳的轴线相交,且交点位于所述电机罩壳内。
在本发明的一个实施例中,所述中央壳体、所述电机罩壳和所述手柄壳体为一体式结构。
在本发明的一个实施例中,所述电机罩壳上设置有进风口,且所述进风口位于所述镂空结构处。
在本发明的一个实施例中,所述电机罩壳靠近顶部的位置上设置有出风口。
在本发明的一个实施例中,所述电机罩壳上设置有软胶,且所述电机罩壳与所述镂空结构相对的一侧设置有握持区。
在本发明的一个实施例中,还包括:
驱动组件,所述驱动组件安装在所述电机罩壳内;
传动组件,所述传动组件安装在所述中央壳体内,且分别与所述驱动组件和所述切割组件传动连接;
供电组件,设置在所述手柄壳体的尾部,所述供电组件与所述驱动组件电连接。
在本发明的一个实施例中,在所述手柄壳体内设置有开关,所述开关、所述驱动组件与所述供电组件之间通过导线电连接,所述导线从所述供电组件引出,经过所述手柄壳体内部与所述开关连接,并延伸至所述电机罩壳内,以和所述驱动组件连接。
在本发明的一个实施例中,在所述切割组件的上方还设置有第一防护板,所述第一防护板的一端与所述中央壳体转动连接。
在本发明的一个实施例中,在所述手柄组件的下方还设置有第二防护板,所述第二防护板与所述中央壳体的底部固定连接。
在本发明的一个实施例中,在所述壳体的一侧滑动安装有张紧块,且所述张紧块上设置有刀板,在所述壳体设置有所述张紧块的一侧还设置有侧盖;
锁紧旋钮,安装在所述侧盖远离所述壳体的一侧,通过一锁紧螺栓依次穿 过所述壳体、所述刀板和所述侧盖以和所述锁紧旋钮螺纹连接;
盘旋轮,其转动安装在所述侧盖上,且所述盘旋轮上设置有月牙状通孔,所述盘旋轮的外圆周上设置有渐变部,所述渐变部与所述张紧块接触;
张紧旋钮,其转动安装在所述锁紧旋钮的外侧,且通过一月牙状凸块与所述月牙状通孔相适配,以和所述盘旋轮卡合,转动所述张紧旋钮带动所述盘旋轮转动,从而带动所述张紧块前后移动,进而驱动所述刀板以进行张紧。
在本发明的一个实施例中,在所述壳体靠近所述侧盖的一侧设置有滑槽,在所述滑槽内安装有一销轴,所述张紧块滑动安装在所述销轴上,且位于所述滑槽内。
在本发明的一个实施例中,所述滑槽的一端设置有卡槽,所述销轴的一端插入所述滑槽的内侧壁,另一端卡入所述卡槽内,在所述销轴上套设有一弹簧,所述弹簧位于所述张紧块与所述销轴插入的所述滑槽的内侧壁之间。
在本发明的一个实施例中,所述张紧块的一端设置有第一连接件,另一端设置有第二连接件,所述第一连接件与所述刀板固定连接,所述第二连接件的一端穿过所述刀板和所述侧盖以和所述盘旋轮接触。
在本发明的一个实施例中,所述锁紧旋钮内嵌入有螺母,通过所述螺母与所述锁紧螺栓螺纹连接。
在本发明的一个实施例中,所述侧盖上设置有一凹槽,张紧旋钮位于所述凹槽内,且所述张紧旋钮的外圆周上设置有间隔设置有多个凸起,且在所述容纳腔内安装有片簧,所述片簧位于所述凹槽的内侧壁和所述张紧旋钮的外侧壁之间。
在本发明的一个实施例中,还包括锁紧手柄,所述锁紧手柄与所述锁紧旋钮转动连接,在所述锁紧旋钮上设置有多个角度卡位,以固定所述锁紧手柄。
本发明还提出一种链锯,包括:壳体,所述壳体包括手柄壳体,所述手柄壳体的底部形成有容纳腔,所述容纳腔内安装PCB板,所述PCB板为无刷PCB板或有刷PCB板;其中,所述容纳腔的前后两侧设置有第一定位筋、其余两侧设置有第二定位筋,所述无刷PCB板通过所述第一定位筋固定安装在所述容纳腔内,所述有刷PCB板通过所述第二定位筋固定安装在所述容纳腔内。
在本发明的一个实施例中,所述壳体还包括电机罩壳,所述电机罩壳内安装有电机,当所述PCB板为所述无刷PCB板时,所述电机为无刷电机,当所述PCB板为所述有刷PCB板时,所述电机为有刷电机。
在本发明的一个实施例中,还包括线缆,所述线缆的一端与所述PCB板电连接,另一端经过所述手柄壳体内延伸至所述电机罩壳,并与所述电机电连接。
在本发明的一个实施例中,所述壳体包括第一壳体和第二壳体,所述第一壳体和所述第二壳体固定连接以形成所述手柄壳体和所述电机罩壳。
在本发明的一个实施例中,所述第一壳体和所述第二壳体上与所述容纳腔对应处设置有辅助进风口,所述辅助进风口与所述容纳腔连通。
在本发明的一个实施例中,在所述第一壳体或所述第二壳体位于所述手柄壳体部分的内壁设置有卡线槽,所述线缆固定在所述卡线槽内。
在本发明的一个实施例中,还包括切割组件,所述切割组件包括刀板和刀链,所述刀板的一端与所述壳体连接,所述刀链围绕所述刀板设置。
在本发明的一个实施例中,所述刀链包括导齿,所述导齿的齿厚设置在0.04英寸至0.05英寸之间,所述刀链的节距设置在0.2英寸至0.4英寸之间。
在本发明的一个实施例中,所述刀链的乘积率设置在406mm3至450mm3 之间。
在本发明的一个实施例中,所述刀链的刀刃为直角齿。
本发明还提出一种链锯,包括:壳体,所述壳体内安装有电机;
传动组件,其包括主动轮、从动轮和输出轴,所述主动轮与所述电机连接,所述输出轴安装在所述壳体内,所述从动轮安装在所述输出轴上;
切割组件,其与所述输出轴连接,所述电机驱动所述传动组件以带动所述切割组件工作;
其中,所述主动轮为圆柱齿轮,所述从动轮的齿设置在所述从动轮的端面,所述主动轮与所述从动轮的啮合面为平面。
在本发明的一个实施例中,所述第一壳体和所述第二壳体内设置有轴承安装位,所述输出轴的两端安装有轴承,且所述轴承位于所述轴承安装位内。
在本发明的一个实施例中,所述电机包括电机支架,所述电机支架通过固定螺丝与所述第一壳体和所述第二壳体固定连接。
在本发明的一个实施例中,所述电机包括电机支架,所述第一壳体和所述第二壳体内形成有电机支架安装槽,所述电机支架位于所述电机支架安装槽内。
在本发明的一个实施例中,所述从动轮为冠状齿轮。
在本发明的一个实施例中,所述壳体的顶部形成有凹槽,且所述凹槽位于所述壳体靠近所述切割组件的一端,所述防护板的一端位于所述凹槽内。
在本发明的一个实施例中,还包括润滑装置,所述润滑装置安装在所述输出轴上,所述润滑装置包括自动出油泵,所述自动出油泵的出油口指向所述切割组件。
在本发明的一个实施例中,所述电机为外转子电机,所述电机的直径设置 在30mm至40mm之间,所述电机的铁芯长度设置在20mm至40mm之间。
在本发明的一个实施例中,所述手持式链锯的整机重量设置在1kg至1.1kg之间。
本发明提出一种链锯,通过设置镂空结构以将电机罩壳和手柄壳体相互分离,使得其能有效地降低手柄握持处的震动,以及在镂空结构处设置进风口,在实现散热的同时有效避免杂物等进入链锯内部而对链锯造成损坏,同时本申请中使得链锯的重心后移,同时使得该链锯在使用过程中适合人体工学的角度,以提高用户的舒适感,便于发力和握持。
本发明提出一种链锯,通过将张紧旋钮和锁紧旋钮集合在一起,便于用户操作,实现了张紧及锁紧结构中链板张紧和压紧的集成功能以及实现了免工具调节。
本发明提出一种链锯,其通过在手柄壳体内形成设置有第一定位筋和第二定位筋的容纳腔,以使得该手持式链锯能够适配安装有刷PCB板和无刷PCB板,并且根据其PCB板的类型选择对应的电机,以使得该手持式链锯能够适配不同类型的电机,从而提高该手持式链锯的适用性。
本发明提出一种链锯,通过将传动组件中的主动轮设计为圆柱齿轮,主动轮与从动轮啮合,同时其啮合面为平面,从而消除了主动轮轴向误差的影响,提高了主动轮与从动轮的配合精度,防止产生齿轮杂音、卡齿、跳齿、打滑或磨损。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还 可以根据这些附图获得其他的附图。
图1为本发明于一实施例链锯的结构示意图。
图2为本发明于一实施例链锯的主视图。
图3为图2中A处的放大结构示意图。
图4为本发明于一实施例链锯的另一角度的结构示意图。
图5为图4中B处的放大结构示意图。
图6为本发明于一实施例链锯的内部结构示意图。
图7为本发明于一实施例链锯的爆炸结构示意图。
图8为本发明于一实施例链锯的壳体的结构示意图。
图9为本发明于一实施例锁紧旋钮和张紧旋钮的结构示意图。
图10为本发明于一实施例锁紧旋钮和张紧旋钮的爆炸结构示意图。
图11为本发明于一实施例中链锯的结构示意图。
图12为本发明于一实施例中链锯的另一角度的结构示意图。
图13为本发明于一实施例中链锯的内部结构示意图。
图14为本发明于一实施例中链锯中第一壳体的结构示意图。
图15为本发明于一实施例中链锯中容纳腔的结构示意图。
图16为本发明于一实施例中无刷PCB板的安装结构示意图。
图17为本发明于一实施例中有刷PCB板的安装结构示意图。
图18为本发明于一实施例中手柄壳体内的线槽结构示意图。
图19为本发明于一实施例中无刷电机与无刷PCB板的安装示意图。
图20为本发明于一实施例中有刷电机与有刷PCB板的安装示意图。
图21为本发明于一实施例中链锯中刀链的局部结构示意图。
图22为本发明于一实施例中链锯中刀链的局部俯视示意图。
图23为本发明于一实施例中有刷电机和传动组件的结构示意图。
图24为本发明于一实施例中传动组件的爆炸结构示意图。
图25为本发明于一实施例中无刷电机安装的结构示意图。
图26为本发明于一实施例中安装无刷电机时壳体的结构示意图。
图27为本发明于一实施例中安装有刷电机时壳体的结构示意图。
图28为本发明于一实施例中第一防护板的爆炸结构示意图。
标号说明:
100、链锯;10、壳体;20、驱动组件;30、传动组件;40、供电组件;
50、切割组件;11、第一壳体;12、第二壳体;101、中央壳体;102、电机罩壳;103、手柄壳体;1030、开关;104、镂空结构;1021、出风口;1022、第一进风口;23、散热风扇;1023、第二进风口;1024、挡板;1025、软胶;1026、握持区;107、第一防护板;108、第二防护板;14、侧盖;1401、凹槽;141、锁紧旋钮;142、锁紧螺栓;51、刀板;143、螺母;144、锁紧手柄;151、张紧块;121、滑槽;122、销轴;123、卡槽;124、限位槽;1511、第一连接件;1512、第二连接件;152、盘旋轮;153、张紧旋钮;1521、渐变部;1522、月牙状通孔;1531、月牙状凸块;125、弹簧;154、片簧;1532、凸起;1031、容纳腔;1032、第一定位筋;1033、第二定位筋;105、无刷PCB板;106、有刷PCB板;10331、上筋位;10332、下筋位;21、无刷电机;22、有刷电机;1034、辅助进风口;202、线缆;2021、卡线槽;2022、第一引线槽;2023、第二引线槽;31、主动轮;32、从动轮;33、输出轴;34、轴承;109、轴承安装位;24、电机支架;25、固定螺丝;16、半限位槽;17、电机支架安装槽;171、凸筋;1071、凹槽;1072、转轴;1073、扭簧;1074、衬套;1075、垫片。
具体实施方式
以下通过特定的具体实例说明本发明的实施方式,本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其他优点与功效。本发明还可以通过另外不同的具体实施方式加以实施或应用,本说明书中的各项细节也可以基于不同观点与应用,在没有背离本发明的精神下进行各种修饰或改变。
需要说明的是,本实施例中所提供的图示仅以示意方式说明本发明的基本构想,遂图式中仅显示与本发明中有关的组件而非按照实际实施时的组件数目、形状及尺寸绘制,其实际实施时各组件的型态、数量及比例可为一种随意的改变,且其组件布局型态也可能更为复杂。
请参阅图1至图10所示,本发明提出一种链锯,以改善现有链锯中电机和握柄大致处于同一水平线上,在电机工作过程中产生的振动不利于握柄处抓持,而且其握持链锯的方式不利于人体发力,其结构不符合人体工程学原理,具体的,在本实施例中,链锯100包括壳体10、驱动组件20、传动组件30、供电组件40和切割组件50,驱动组件20和传动组件30设置在壳体10内,切割组件50设置在壳体10的前侧,且驱动组件20与传动组件30连接,同时,传动组件30与切割组件50连接,通过驱动组件20驱动传动组件30,进而驱动切割组件50进行切割工作,供电组件40与驱动组件20电连接,该供电组件40外接电源或电池包,以为驱动组件20提供动力源。
请参阅图1及图2所示,在本实施例中,所述壳体10包括第一壳体11和第二壳体12,第一壳体11和第二壳体12固定连接在一起以形成以容纳腔,驱动组件20和传动组件30安装在容纳腔内,且壳体10包括中央壳体101、电机罩壳102和手柄壳体103,即第一壳体11和第二壳体12均包括中央壳体部分、电机罩壳部分和手柄壳体部分。需要说明的是,在本实施例中,中央壳 体101、电机罩壳102和手柄壳体103为一体式成型结构,所述中空壳体101为安装传动组件30的部分,电机罩壳102为安装驱动组件20的部分,手柄壳体103为手柄部分。电池包插接在手柄壳体103的端部,以和供电组件40连接,为驱动组件20提供动力源。
请参阅图1、图2及图6所示,在本实施例中,传动组件30安装在中央壳体101内,且驱动组件20安装在电机罩壳102内,且驱动组件20的输出轴延伸至所述中央壳体101内,并和安装在中央壳体101内的传动组件30连接,切割组件50安装在中央壳体101的前侧,并部分位于该中央壳体101内,以和传动组件30连接,通过驱动组件20驱动传动组件30,进而驱动切割组件50进行割草作业。
请参阅图1、图2及图6所示,在本实施例中,在手柄壳体103的内部安装有开关1030,且在手柄壳体103的尾部安装有供电组件40,该供电组件40外接动力源,且该供电组件40、驱动组件20和开关1030之间电连接,具体的,开关1030、驱动组件20与供电组件40之间通过导线电连接,导线从供电组件40引出,经过手柄壳体103的内部与开关1030连接,并延伸至电机罩壳102内,以和驱动组件20连接。还有需要说明的是,所述驱动组件可以是有刷电机或无刷电机,且可以共用一套模具,即电机可以互换,同样的其内对应的控制板也可以互换,控制板安装在壳体10内,用于控制驱动组件20。
请参阅图1、图2及图6所示,在本实施例中,电机罩壳102斜向上设置在中央壳体101的尾部,相对应的,手柄壳体103斜向下设置在中央壳体101的尾部,且电机罩壳102和手柄壳体103之间设置有镂空结构104,该镂空结构104的设置使得电机罩壳102和手柄壳体103相互分离,从而使得其能够有效地降低手柄握持处的震动,提高用户使用的舒适感和安全性。
请参阅图1、图2及图6所示,在本实施例中,切割组件50的轴线L1与手柄壳体103的轴线L2相交于一点,且交点位于手柄壳体103的内部,需要说明的是,切割组件50的轴线为沿切割组件50的长度方向(即X方向)的中线,手柄壳体103的轴线为沿手柄壳体103布置方向的中线,从而使得该链锯100的重心后移,同时使得该链锯100在使用过程中适合人体工学的角度,以提高用户的舒适感。还需要说明的是,进一步地将切割组件50的轴线L1与电机罩壳102的轴线L3相交,且交点位于中央壳体101内,手柄壳体103的轴线L2与电机罩壳102的轴线L3相交,且交点位于电机罩壳102内。
请参阅图1、图2及图6所示,还需要说明的是,由于在手柄组件103的尾部设置有供电组件40,该供电组件40的底面为平面结构,使得该链锯100在安装有电池包或不安装电池包时均可以呈相对竖直放置。
请参阅图2、图3至图5所示,在本实施例中,在电机罩壳102靠近顶部的位置上设置有出风口1021,在电机罩壳102上还设置有第一进风口1022,该第一进风口1022设置在靠近电机罩壳102与手柄壳体103之间的镂空结构104处,同时在驱动组件20的尾部还安装有散热风扇23,该散热风扇23靠近电机罩壳102的顶部,当散热风扇23启动时,冷却风从第一进风口1022进入电机罩壳102内,流经驱动组件20后从出风口1021流出,即通过在电机罩壳102上设置进风口,且将进风口设置在靠近镂空结构104处,在实现对驱动电机的散热作用的同时有效地避免了杂物等从进风口进入链锯内部,从而避免造成链锯损坏。
请参阅图2、图3至图5所示,为避免冷却风从单侧进入电机罩壳102内部,导致驱动组件20四周散热不均,导致驱动组件20的局部温度过高,在本实施例中,在电机罩壳102的四周上还是设置有多个第二进风口1023,该第 二进风口1023呈倾斜设置在电机罩壳102上,即在该第二进风口1023的存在有由电机罩壳102的壳壁形成的挡板1024,在提高的其散热效果的同时,也能够避免杂物等进入链锯内部,从而避免造成链锯损坏。
请参阅图2、图3至图5所示,在本实施例中,电机罩壳102上设置有软胶1025,且电机罩壳102与镂空结构104相对的一侧设置有握持区1026,从而当切割树枝时,该握持区1026相当于前手柄,且适合人体工学的角度,即通过将电机罩壳102斜向上设置在中央壳体101的尾部,且在电机罩壳102与镂空结构104相对的一侧设置握持区1026,从而当切割树枝时,前手柄角度为适合人体工学的角度,适合发力,握持稳定,手感舒适,同时,通过在电机罩壳102上设置软胶1025,以增加手感舒适度和增加摩擦力,同时降低震感。
还需要说明的是,在该第二壳体12远离所述第一壳体11的一侧上设置有张紧机构,该张紧机构与切割组件50中的刀板51连接,具体的,在所述壳体的一侧滑动安装在张紧块,所述刀板51通过所述张紧块与所述第二壳体12滑动安装在一起,且所述壳体设置有所述张紧块的一侧还设置有侧盖,所述张紧机构设置在所述侧盖上,用于手动调节切割组件50中的刀板51前后移动,从而调节切割组件50中链刀的张紧程度,使其无需携带工具即可调节刀链的张紧,减少常规链锯需要工具来实现切割组件50的张紧。
具体的,请参阅图1、图2及图7所示,在本实施例中,在该第二壳体12远离第一壳体11的一侧上设置有侧盖14,侧盖14与壳体10之间形成一容纳腔,切割组件中的刀板51部分位于容纳腔内,在侧盖14上安装有锁紧旋钮141,在第二壳体12上设置有一锁紧螺栓142,锁紧螺栓142的一端与第二壳体12固定连接,另一端依次穿过第二壳体12、刀板51和侧盖14以和锁紧旋 钮141螺纹连接,具体的,锁紧旋钮141内嵌入有螺母143,通过螺母143与锁紧螺栓142螺纹连接,通过拧紧锁紧旋钮141,带动侧盖14压紧在刀板51上,从而达到锁紧的目的。
请参阅图1、图7至图10所示,在本实施例中,在锁紧旋钮141上还安装有锁紧手柄144,锁紧手柄144与锁紧旋钮141转动连接,且锁紧手柄144例如通过塑件的塑性变形,直接压入锁紧旋钮141上进行定位。还需要说明的是,在锁紧旋钮141上设置有多个角度卡位,以固定锁紧手柄144,例如在0°和90°各有一个卡位,0度卡位是保证在使用工具时,锁紧手柄144收纳在锁紧旋钮141的容纳槽内,且使得锁紧手柄144不会来回摆动,90度卡位是在使用锁紧手柄144旋转时,手柄时刻保持在90度,方便旋转。
请参阅图1、图7至图10所示,在本实施例中,在侧盖14上设置有张紧机构,用于手动调节切割组件中的刀板51前后移动,从而调节切割组件中切割组件的张紧程度,使其无需携带工具即可调节刀链的张紧,减少常规链锯需要工具来实现切割组件的张紧。侧盖14上设置有凹槽1401,在凹槽1401内安装有张紧旋钮153,该张紧旋钮153与侧盖14转动连接,且该锁紧旋钮141转动安装在张紧旋钮153的中间。
请参阅图1、图7至图10所示,在本实施例中,切割组件中的刀板51通过张紧块151与壳体10滑动连接,在第二壳体12靠近侧盖14的一侧上设置有滑槽121,张紧块151滑动安装在滑槽121内,具体的,滑槽121内安装有销轴122,张紧块151滑动安装在销轴122上。需要说明的是,滑槽121的一端设置有卡槽123,销轴122的一端插入滑槽121的内侧壁,另一端卡入卡槽123内,安装时,先将张紧块151安装在销轴122上,再将销轴122安装在滑槽121内,这种方式安装销轴122,使其结构稳定,且安装销轴122无需其他 零件来安装固定销轴122,节省了成本,和优化了结构的复杂性,人员安装时也方便,不需要借助工具安装,只要手动安装,且大大节省了安装时间。
请参阅图1、图7至图10所示,还需要说明的是,在本实施例中,在滑槽121的上方还设置有一限位槽124,张紧块151部分位于限位槽124内,以起到在张紧块151滑动时起到限位的作用,避免张紧块151过度移动,从而导致刀板51过度张紧而造成损坏。
请参阅图1、图7至图10所示,在本实施例中,在张紧块151上设置有第一连接件1511和第二连接件1512,第一连接件1511设置在张紧块151的一端,且第一连接件1511与刀板51固定连接,用于在张紧块151移动时带动刀板51同步移动,第二连接件1512设置在张紧块151的另一端,且第二连接件1512的一端穿过刀板51上的长圆形通槽以及侧盖14,并用于和盘旋轮152接触,通过盘旋轮152推动张紧块151移动。
请参阅图1、图7至图10所示,在本实施例中,盘旋轮152转动安装在侧盖14上,且在凹槽1401内转动安装有张紧旋钮153,具体的,盘旋轮152转动安装在凹槽1401的底部,且位于张紧旋钮153和侧盖14之间,在盘旋轮152的外圆周上设置有渐变部1521,该渐变部1521为盘旋轮152外圆周半径组件增加的部位,该渐变部1521在盘旋轮152转动的过程中,与张紧块151上的第二连接件1512接触,并随着盘旋轮152的转动推动张紧块151移动,进而在第一连接件1511的带动作用下,带动刀板51移动,从而实现切割组件的张紧。需要说明的是,盘旋轮152例如设为金属件,以保证其使用寿命和可靠性。
请参阅图1、图7至图10所示,在本实施例中,在盘旋轮152上设置有月牙状通孔1522,且在张紧旋钮153上设置有与所述月牙状通孔1522相适配 的月牙状凸块1531,该月牙状凸块1531位于所述月牙状通孔1522内,以使得张紧旋钮153和盘旋轮152卡合在一起,且该张紧旋钮153转动安装在锁紧旋钮141的外侧,即张紧旋钮153转动安装在侧盖14上,通过转动张紧旋钮153以带动盘旋轮152转动,从而带动张紧块151移动。
还需要说明的是,请参阅图1、图7至图10所示,在本实施例中,在销轴122上套设有一弹簧125,弹簧125位于所述张紧块151与销轴122插入的滑槽121的内侧壁之间,顺时针旋转张紧旋钮153带动盘旋轮152做顺时针运动,盘旋轮152转动,使得其外圆周上的渐变部1521触碰到张紧块,带动张紧块151在销轴122的轴线方向做直线运动,即张紧块151做平移运动的同时带动刀板51做平移运动,来实现张紧结构松紧的实现;当逆时针旋转张紧旋钮153带动盘旋轮152做逆时针运动,同时张紧将放松,弹簧125弹性变形推动张紧块151做平移运动,使张紧块151退回原位,实现自动复位。
请参阅图1、图7至图10所示,在本实施例中,在凹槽1401的内侧壁上安装有片簧154,张紧旋钮153底面的外圆周上设置有间隔设置有多个凸起1532,片簧154位于凹槽1401的内侧壁和张紧旋钮153的外侧壁之间,当转动张紧旋钮153时,多个凸起1532间隔压在片簧154上,即片簧154在凸起1532上和凸起1532之间的间隙中来回变换的过程中做弹性变形运动,从而产生声响和阻尼手感,便于准确的调节张紧的大小。
综上,本实施例中通过将张紧旋钮和锁紧旋钮集合在一起,便于用户操作,实现了张紧及锁紧结构中链板张紧和压紧的集成功能以及实现了免工具调节,以及通过在张紧旋钮和侧盖之间设置片簧,使其在转动中做弹性变形运动,从而产生声响和阻尼手感,便于准确的调节张紧的大小。
请参阅图11至图22所示,在本实施例中,为解决现有技术中电动链锯一 般是仅能使用无刷电机和无刷PCB板配合使用,或者是仅能使用有刷电机和有刷PCB板配合使用,无法两者同时兼容,适配性低的问题,具体的,在所述手柄壳体103的底部形成有容纳腔1031,所述容纳腔1031内安装有PCB板,具体的,在所述容纳腔1031的侧壁上设置有用于固定所述PCB板的定位筋,例如,在所述容纳腔1031的前后两侧设置有第一定位筋1032,其余两侧设置有第二定位筋1033,其中,将所述手柄壳体103靠近所述切割组件50的一侧定义为前侧,远离所述切割组件50的一侧定义为后侧。在本实施例中,所述PCB板可以为无刷PCB板105,也可以为有刷PCB板106,当所述PCB板为无刷PCB板105时,所述无刷PCB板105通过所述第一定位筋1032实现定位,并固定在所述容纳腔1031内;当所述PCB板为有刷PCB板106时,所述有刷PCB板106通过所述第二定位筋1033实现定位,并固定在所述容纳腔1031内,使其在同一壳体内采用差异配合的第一定位筋1032和第二定位筋1033,可兼容有刷PCB板106和无刷PCB板105的尺寸差异,实现有刷电机22与无刷电机21的互换,其适配性高。
请参阅图13至图17所示,在本实施例中,由于所述无刷PCB板105的壁厚较大,因此采用包围式筋位固定,即所述第一定位筋1032将所述无刷PCB板105包围固定;所述有刷PCB板106的壁厚较薄,因此采用将有刷PCB板106的侧面插入两根筋内的设计进行固定,即所述第二定位筋1033包括上筋位10331和下筋位10332,所述上筋位10331和所述下筋位10332之间存在有间隙,所述有刷PCB板106插入所述上筋位10331和所述下筋位10332之间的间隙内,通过所述上筋位10331和所述下筋位10332的配合实现固定安装,以使得该手持式链锯能够适配安装有刷PCB板和无刷PCB板,从而提高该手持式链锯的适用性。
请参阅图15、图18、图19及图20所示,在本实施例中,所述驱动组件20为电机,其安装在所述电机罩壳102内,例如,当所述PCB板为所述无刷PCB板105时,所述电机为无刷电机21,当所述PCB板为所述有刷PCB板106时,所述电机为有刷电机22,以使得该手持式链锯能够适配安装有刷PCB板106和无刷PCB板105,并且根据其PCB板的类型选择对应的电机,以使得该手持式链锯能够适配不同类型的电机,从而提高该手持式链锯的适用性。需要说明的是,在所述电机的尾部设置有散热风扇23,该散热风扇23靠近电机罩壳102的顶部,相对应的,在所述电机罩壳102上设置有出风口1021,当散热风扇23启动时,冷却风从进风口进入电机罩壳102内,流经电机后从出风口1021流出,以在实现对电机的散热作用。
请参阅图13至图17所示,在本实施例中,在所述第一壳体11和所述第二壳体12上与所述容纳腔1031的对应处设置有辅助进风口1034,所述辅助进风口1034与所述容纳腔1031连通,以使得有刷PCB板和无刷PCB板能够共用该进风口,以实现PCB板的辅助散热和自然散热,以进一步提高该链锯100的散热效果。
请参阅图15、图18、图19及图20所示,在本实施例中,所述电机和所述PCB板之间通过线缆202电连接,所述线缆202的一端与所述PCB板电连接,另一端经过所述手柄壳体103的内部,并延伸至所述电机罩壳102内,并与所述电机电连接。具体的,在所述第一壳体11或所述第二壳体12位于所述手柄壳体103的部分的内壁设置有卡线槽2021,所述线缆202固定在所述卡线槽2021内,其通过在壳体10内设置有用于固定连接在PCB板和电机之间的线缆的卡线槽2021,以适应不同电机类型线的线缆走线,从而避免线缆凌乱而造成的危险或不可靠性。
请参阅图15、图18、图19及图20所示,在本实施例中,当所述电机为无刷电机21时,所述线缆202从所述无刷电机21的前侧引出,并连接至所述无刷PCB板105上,此时,在所述第一壳体11或所述第二壳体12上的靠近所述无刷电机21的前侧处设置有第一引线槽2022,此时,所述线缆202由所述无刷电机21的前侧至所述无刷PCB板105的方向延伸,并依次经过所述第一引线槽2022和所述卡线槽2021;当所述电机为有刷电机22时,所述线缆202从所述有刷电机22的后侧引出,并连接至所述有刷PCB板106上,此时,在所述第一壳体11或所述第二壳体12上的靠近所述有刷电机22的后侧处设置有第二引线槽2023,此时,所述线缆202由所述有刷电机22的后侧至所述有刷PCB板106的方向延伸,并依次经过所述第二引线槽2023和所述卡线槽2021。需要说明的是,所述第一引线槽2022、所述第二引线槽2023和所述卡线槽2021同时位于所述第一壳体11或同时位于所述第二壳体12上,且所述第一引线槽2022和所述第二引线槽2023位于所述电机的下方,以使其适应不同电机类型线的线缆走线,从而避免线缆凌乱而造成的危险或不可靠性。
请参阅图11至图14、图21及图22所示,在本实施例中,所述切割组件50包括刀板51和刀链52,所述刀板51的一端与所述壳体10连接,所述刀链52围绕所述刀板51设置,所述刀链52包括导齿,所述导齿的齿厚设置在0.04英寸至0.05英寸之间,所述刀链的节距设置在0.2英寸至0.4英寸之间,例如,所述导齿的齿厚优选为0.043英寸,所述刀链的节距优选为0.3英寸,即使得在同等长度的刀链下,小节距的刀链其切割齿的数量增加,有利于提高其切割效率。进一步的,所述刀链的乘积率设置在406mm3至450mm3之间,其中,乘积率指的是刀链的高度H、刀链的节距以及刀链的宽度W的乘积,以提高其切割速度,适合小型工具快速作业。进一步的,刀链的刀刃优选的是 直角齿或者小直角齿,使其拥有更快速的切割速度及切割效率。还需要说明的是,在本实施例中,刀链优选采用窄切口刀刃,既减轻重量又降低反弹,能提高切割效率的同时,还使得切削木屑纤维更少。
综上,本实施例中通过在手柄壳体内形成有用于安装PCB板的容纳腔,该容纳腔的侧壁上分别设置有用于固定无刷PCB板的第一定位筋和用于固定有刷PCB板的第二定位筋,以使得该手持式链锯能够适配安装有刷PCB板和无刷PCB板,并且根据其PCB板的类型选择对应的电机,以使得该手持式链锯能够适配不同类型的电机,从而提高该手持式链锯的适用性,即使其可在同一机壳内实现无刷电机与有刷电机的相互转换,可兼容有刷PCB板和无刷PCB板,适配性高,使用方便,结构简单。
请参阅图11至图13、图23至图28所示,在本实施例中,为消除主动轮轴向误差的影响,提高了主动轮与从动轮的配合精度,防止了齿轮杂音、卡齿、跳齿、打滑或磨损等问题,具体的,所述电机包括电机支架24,所述电机支架24通过固定螺丝25与所述第一壳体11和所述第二壳体12固定连接。在本实施例中,所述电机支架24可以设置为方形板,例如,可以将固定螺丝25固定在所述方形板上,在将所述固定螺丝25的圆柱头固定在所述壳体10内,即通过所述第一壳体11和所述第二壳体12之间的作用以将所述固定螺丝25卡合固定,从而实现所述电机的固定安装,例如,在所述第一壳体11和所述第二壳体12的内侧设置有半限位槽16,当所述第一壳体11和所述第二壳体12固定安装时,所述第一壳体11和所述第二壳体12内侧的两个半限位槽16组合形成完整的限位孔,该固定螺丝25卡合在该限位孔内以实现固定。需要说明的是,所述电机可以为外转子无刷电机。
请参阅图11、图23、图24及图27所示,在另一实施例中,所述第一壳体 11和所述第二壳体12内形成有电机支架安装槽17,所述电机支架24位于所述电机支架安装槽17内,例如,在所述电机支架安装槽17的上下两侧分别形成有凸筋171,所述电机支架24的上下两侧分别与所述凸筋171接触,即所述电机支架24的上下两侧被所述电机支架安装槽17的上下两侧的凸筋171限制,左右两侧分别为所述第一壳体11和所述第二壳体12限制,从而将所述电机固定安装在所述壳体10内。需要说明的是,所述电机例如为有刷电机或内转子无刷电机,其中,有刷电机的电机支架24可以设置为与电机为一体结构。
请参阅图21、图22、图23及图24所示,在本实施例中,所述传动组件30包括主动轮31、从动轮32和输出轴33,所述主动轮31与所述电机连接,所述输出轴33安装在所述壳体10内,所述从动轮32安装在所述输出轴33上,并与所述主动轮31啮合。在本实施例中,所述主动轮31例如设置为圆柱齿轮,所述从动轮32的齿设计在其端面上,即所述从动轮32的齿线位于其端面,所述主动轮31与所述从动轮32啮合且啮合面为平面,从而允许主动轮31在轴向有一定的窜动量,从而提高了主动轮与从动轮的配合精度。当然,所述主动轮31可以是圆柱直齿轮或者圆柱斜齿轮,其齿线优选为螺旋状,所述从动轮32采用冠状齿轮,优选为皇冠齿轮,其齿线为螺旋状,皇冠齿轮与齿线为螺旋状的圆柱齿轮啮合,其啮合面为平面,因此当主动轮31出现轴向窜动时,也能够保证主动轮31与从动轮32自动啮合,使得主动轮31与从动轮32的配合精度不受主动轮31轴向误差的影响,装配简单,同时提高了主动轮31与从动轮32的配合精度,防止产生齿轮杂音、卡齿、跳齿、打滑或磨损等问题。
请参阅图11、图26及图27所示,在本实施例中,所述第一壳体11和所 述第二壳体12内设置有轴承安装位109,所述输出轴33的两端均安装有轴承34,且所述轴承34位于所述轴承安装位109内,以保证输出轴33的安装精度。
请参阅图12及图28所示,在本实施例中,该链锯100还包括第一防护板107,该第一防护板107设置在切割组件50的上方,且与切割组件50相适配,所述第一防护板107的一端与所述壳体10的顶部转动连接,以在切割过程中起到保护用户的作用。
请参阅图12及图28所示,在本实施例中,在所述壳体10的顶部设置有凹槽1071,且所述凹槽1071位于所述壳体10靠近切割组件50的一端,所述第一防护板107的一端位于所述凹槽1071内,具体的,所述第一防护板107与所述壳体10转动连接的一端上设置有转轴1072,所述转轴1072上套设有扭簧1073,所述转轴1072和所述扭簧1073均位于所述凹槽1071内,且所述扭簧1073的一端卡在所述第一防护板107上,另一端卡在所述壳体10上,以使得所述第一防护板107转动后可以在所述扭簧1073的作用下实现自动复位。在本实施例中,所述第一防护板107的转动角度由所述壳体10限制,即当所述第一防护板107与所述壳体10接触后产生限位,从而阻止所述第一防护板107继续转动,其结构简单,无需其他限位结构。在本实施例中,所述第一防护板107的转动角度设置在0°至110°之间,其中,0°时,所述第一防护板107与所述切割组件50中的刀板平行。进一步的,由于所述第一防护板107是活动部件,且第一防护板107涉及到安全防护,其需要足够结构强度,因此,在本实施例中,在第一防护板107上增加衬套1074,所述衬套1074设置在所述转轴1072和所述防护板107之间,两者进行配合旋转,增加使用寿命和结构强度。在本实施例中,所述转轴1072例如设置为螺钉,所述衬套1074 设置在所述第一防护板107内,所述螺钉依次穿过垫片1075、所述衬套1074并与所述壳体10连接以将所述第一防护板107与所述壳体10安装,并在所述衬套1074的配合作用下实现转动。
请参阅图12所示,在本实施例中,该链锯100还包括第二防护板108,该第二防护板108固定设置在壳体10的底部,且位于靠近手柄壳体103的下方,以在切割过程中起到保护用户的作用。例如,该第二防护板108为开放式手柄防护板,即此手柄防护板由机壳延伸出,另一端镂空,成开放式的状态,以使其在满足安规的条件下此防护板尽可能的做小,可减小重量,且手柄防护板开放式便于握持,手感舒适,无束缚感。
请参阅图11所示,在本实施例中,所述链锯100还包括润滑装置,所述润滑装置安装在所述输出轴32上,所述润滑装置包括自动出油泵,所述自动出油泵的出油口指向所述切割组件50,以实现自动润滑,当然,在一起其他实施例中,还可通过适配滴油瓶以进行手动在链条上滴油润滑。
请参阅图11所示,在本实施例中,所述电机为外转子电机,所述电机的直径设置在30mm至40mm之间,所述电机的铁芯长度设置在20mm至40mm之间,所述手持式链锯的整机重量设置在1kg至1.1kg之间,例如,当所述电机搭配安装4寸刀板刀链的情况下,所述手持式链锯的整机重量达到1kg至1.05kg之间;当所述电机搭配安装6寸刀板刀链的情况下,所述手持式链锯的整机重量达到1.05kg至1.1kg之间,并且在该重量下,所述手持式链锯的功率峰值能够达到500w,刀链的线速度能够达到8m/s,即使得该链锯实现了重量轻、功率大、扭矩大以及线速度高的特点。
综上,本实施例中通过将传动组件中的主动轮设计为圆柱齿轮,主动轮与从动轮啮合,同时其啮合面为平面,从而消除了主动轮轴向误差的影响,提高 了主动轮与从动轮的配合精度,防止产生齿轮杂音、卡齿、跳齿、打滑或磨损等问题,并且在该传动组件的结构下,使得电机在此机器的装配十分简单便利。
以上描述仅为本申请的较佳实施例以及对所运用技术原理的说明,本领域技术人员应当理解,本申请中所涉及的范围,并不限于上述技术特征的特定组合而成的技术方案,同时也应涵盖在不脱离所述发明构思的情况下,由上述技术特征或其等同特征进行任意组合而形成的其它技术方案,例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。
除说明书所述的技术特征外,其余技术特征为本领域技术人员的已知技术,为突出本发明的创新特点,其余技术特征在此不再赘述。

Claims (20)

  1. 一种链锯,其特征在于,包括:
    壳体,所述壳体包括中央壳体、电机罩壳和手柄壳体,所述电机罩壳斜向上设置在所述中央壳体的尾部,所述手柄壳体斜向下设置在所述中央壳体的尾部,且所述电机罩壳与所述手柄壳体之间设置有镂空结构;
    切割组件,设置在所述中央壳体的前侧,且所述切割组件的轴线与所述手柄壳体的轴线相交,且交点位于所述手柄壳体内。
  2. 根据权利要求1所述的链锯,其特征在于,所述切割组件的轴线与所述电机罩壳的轴线相交,且交点位于所述中央壳体内,所述手柄壳体的轴线与所述电机罩壳的轴线相交,且交点位于所述电机罩壳内。
  3. 根据权利要求1所述的链锯,其特征在于,所述电机罩壳上设置有进风口,且所述进风口位于所述镂空结构处。
  4. 根据权利要求1所述的链锯,其特征在于,还包括:
    驱动组件,所述驱动组件安装在所述电机罩壳内;
    传动组件,所述传动组件安装在所述中央壳体内,且分别与所述驱动组件和所述切割组件传动连接;
    供电组件,设置在所述手柄壳体的尾部,所述供电组件与所述驱动组件电连接。
  5. 根据权利要求4所述的链锯,其特征在于,在所述手柄壳体内设置有开关,所述开关、所述驱动组件与所述供电组件之间通过导线电连接,所述导线从所述供电组件引出,经过所述手柄壳体内部与所述开关连接,并延伸至所述电机罩壳内,以和所述驱动组件连接。
  6. 根据权利要求1所述的链锯,其特征在于,所述切割组件包括:刀板, 所述刀板通过一张紧块滑动安装在所述壳体的一侧,且在所述壳体设置有所述张紧块的一侧还设置有侧盖。
  7. 根据权利要求6所述的链锯,其特征在于,还包括:
    锁紧旋钮,且安装在所述侧盖远离所述壳体的一侧,通过一锁紧螺栓依次穿过所述壳体、所述刀板和所述侧盖以和所述锁紧旋钮螺纹连接;
    盘旋轮,其转动安装在所述侧盖上,且所述盘旋轮上设置有月牙状通孔,所述盘旋轮的外圆周上设置有渐变部,所述渐变部与所述张紧块接触;
    张紧旋钮,其转动安装在所述锁紧旋钮的外侧,且通过一月牙状凸块与所述月牙状通孔相适配,以和所述盘旋轮卡合,转动所述张紧旋钮带动所述盘旋轮转动,从而带动所述张紧块前后移动,进而驱动所述刀板以进行张紧。
  8. 根据权利要求7所述的链锯,其特征在于,在所述壳体靠近所述侧盖的一侧设置有滑槽,在所述滑槽内安装有一销轴,所述张紧块滑动安装在所述销轴上,且位于所述滑槽内。
  9. 根据权利要求8所述的链锯,其特征在于,所述滑槽的一端设置有卡槽,所述销轴的一端插入所述滑槽的内侧壁,另一端卡入所述卡槽内,在所述销轴上套设有一弹簧,所述弹簧位于所述张紧块与所述销轴插入的所述滑槽的内侧壁之间。
  10. 根据权利要求7所述的链锯,其特征在于,所述张紧块的一端设置有第一连接件,另一端设置有第二连接件,所述第一连接件与所述刀板固定连接,所述第二连接件的一端穿过所述刀板和所述侧盖以和所述盘旋轮接触。
  11. 根据权利要求7所述的链锯,其特征在于,所述侧盖上设置有一凹槽,张紧旋钮位于所述凹槽内,且所述张紧旋钮的外圆周上设置有间隔设置有多个凸起,且在所述凹槽的内侧壁上安装有片簧,所述片簧位于所述凹槽的内 侧壁和所述张紧旋钮的外侧壁之间。
  12. 根据权利要求7所述的链锯,其特征在于,还包括锁紧手柄,所述锁紧手柄与所述锁紧旋钮转动连接,在所述锁紧旋钮上设置有多个角度卡位,以固定所述锁紧手柄。
  13. 根据权利要求1所述的链锯,其特征在于,所述手柄壳体的底部形成有容纳腔,所述容纳腔内安装PCB板,所述PCB板为无刷PCB板或有刷PCB板;
    其中,所述容纳腔的前后两侧设置有第一定位筋、其余两侧设置有第二定位筋,所述无刷PCB板通过所述第一定位筋固定安装在所述容纳腔内,所述有刷PCB板通过所述第二定位筋固定安装在所述容纳腔内。
  14. 根据权利要求13所述的链锯,其特征在于,所述电机罩壳内安装有电机,当所述PCB板为所述无刷PCB板时,所述电机为无刷电机,当所述PCB板为所述有刷PCB板时,所述电机为有刷电机。
  15. 根据权利要求14所述的链锯,其特征在于,还包括线缆,所述线缆的一端与所述PCB板电连接,另一端经过所述手柄壳体内延伸至所述电机罩壳,并与所述电机电连接。
  16. 一种链锯,其特征在于,包括:
    壳体,所述壳体内安装有电机;
    传动组件,其包括主动轮、从动轮和输出轴,所述主动轮与所述电机连接,所述输出轴安装在所述壳体内,所述从动轮安装在所述输出轴上;
    切割组件,其与所述输出轴连接,所述电机驱动所述传动组件以带动所述切割组件工作;
    其中,所述主动轮为圆柱齿轮,所述从动轮的齿设置在所述从动轮的端 面,所述主动轮与所述从动轮的啮合面为平面。
  17. 根据权利要求16所述的链锯,其特征在于,所述壳体包括第一壳体和第二壳体,所述第一壳体和所述第二壳体内设置有轴承安装位,所述输出轴的两端安装有轴承,且所述轴承位于所述轴承安装位内。
  18. 根据权利要求17所述的链锯,其特征在于,所述电机包括电机支架,所述电机支架通过固定螺丝与所述第一壳体和所述第二壳体固定连接。
  19. 根据权利要求17所述的链锯,其特征在于,所述电机包括电机支架,所述第一壳体和所述第二壳体内形成有电机支架安装槽,所述电机支架位于所述电机支架安装槽内。
  20. 根据权利要求19所述的链锯,其特征在于,所述从动轮为冠状齿轮。
PCT/CN2023/120649 2022-09-27 2023-09-22 一种链锯 WO2024067391A1 (zh)

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CN202222565618.5U CN218604102U (zh) 2022-09-27 2022-09-27 一种用于链锯刀板张紧和锁紧的旋钮及链锯
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CN218604329U (zh) * 2022-09-27 2023-03-14 格力博(江苏)股份有限公司 一种手持式链锯
CN218604102U (zh) * 2022-09-27 2023-03-14 格力博(江苏)股份有限公司 一种用于链锯刀板张紧和锁紧的旋钮及链锯

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