CN113000928A - Cutting tool - Google Patents

Cutting tool Download PDF

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Publication number
CN113000928A
CN113000928A CN202110270624.5A CN202110270624A CN113000928A CN 113000928 A CN113000928 A CN 113000928A CN 202110270624 A CN202110270624 A CN 202110270624A CN 113000928 A CN113000928 A CN 113000928A
Authority
CN
China
Prior art keywords
cutting tool
battery pack
adapter
disposed
present
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN202110270624.5A
Other languages
Chinese (zh)
Other versions
CN113000928B (en
Inventor
李敬山
张林高
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Globe Jiangsu Co Ltd
Original Assignee
Globe Jiangsu Co Ltd
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
Application filed by Globe Jiangsu Co Ltd filed Critical Globe Jiangsu Co Ltd
Priority to CN202110270624.5A priority Critical patent/CN113000928B/en
Publication of CN113000928A publication Critical patent/CN113000928A/en
Priority to EP22766352.3A priority patent/EP4304799A1/en
Priority to PCT/CN2022/080102 priority patent/WO2022188830A1/en
Application granted granted Critical
Publication of CN113000928B publication Critical patent/CN113000928B/en
Priority to US18/446,470 priority patent/US20230381875A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1092—Arrangements for cooling or lubricating tools or work specially adapted for portable power-driven tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention provides a cutting tool, and particularly relates to the field of cutting equipment. The cutting tool includes: shell, cutting part, drive division and power supply portion, power supply portion includes: battery package, air intake, air outlet and updraft ventilator. The battery pack is arranged in a battery pack cavity of the cutting tool, and a first heat dissipation part and a second heat dissipation part are arranged on the battery pack. The air inlet is arranged on the shell and is communicated with at least one first heat dissipation hole in the first heat dissipation part. The air outlet is arranged on the wall body of the battery pack cavity and communicated with at least one second heat dissipation hole in the second heat dissipation part. The air draft device is arranged in the shell, the air draft opening is communicated with the air outlet, and the air flow sucked is discharged out of the shell. The cutting tool can effectively prevent the corrosion and pollution of dust and cooling liquid to the battery pack, and can improve the heat dissipation state of the battery pack.

Description

Cutting tool
Technical Field
The invention relates to the field of cutting equipment, in particular to a cutting tool.
Background
The conventional handheld cutting tool is mainly powered by a high-power battery pack, and the battery pack is mounted in a battery pack cavity on a machine shell, however, the power of the battery pack adopted by the handheld electric cutting saw is large, for example, the battery pack used by the cutting saw is 80V4AH, the power is 2000W, the high temperature of the battery pack can cause the shortening of the cruising ability, and the battery pack of the conventional handheld cutting tool is mainly exposed outside the shell of the handheld cutting tool and is easily polluted by dust and cooling liquid, so that the power supply system is in fault or short circuit, and therefore, a cutting tool and a cooling method of the battery pack of the cutting tool need to be provided, so as to solve the problems.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention is directed to a cutting tool, which can solve the problem of poor cooling effect of the prior art cutting tool.
In order to achieve the above and other related objects, the present invention provides a cutting tool, including a housing, a cutting part, a driving part and a power supply part, wherein the driving part supplies power to the cutting part, and the power supply part supplies power to the driving part, the power supply part including:
the battery pack is arranged in a battery pack cavity of the cutting tool, and a first heat dissipation part and a second heat dissipation part are arranged on the battery pack;
the air inlet is arranged on the shell and communicated with the first heat dissipation part;
the air outlet is arranged on the wall body of the battery pack cavity and communicated with the second heat dissipation part;
the air draft device is arranged in the shell, the air draft opening is communicated with the air outlet, and the air draft device discharges the air flow which is sucked out of the shell;
wherein, the air inlet is arranged at the bottom of the battery pack cavity.
In one example of the cutting tool of the present invention, the air extracting device is a fan mounted on a rotating shaft of a driving motor of the cutting tool.
In one example of the cutting tool of the present invention, the battery pack chamber is disposed rearward of the cutting tool drive motor and between the first handle and the second handle.
In one example of the cutting tool of the present invention, the battery pack is removably coupled to the battery pack cavity.
In one example of the cutting tool of the present invention, the battery pack chamber includes a pack chamber body and a pack chamber cover, and the pack chamber cover is sealingly mounted on an opening of the pack chamber body.
In one example of the cutting tool of the present invention, the pack cavity cover is provided with a transparent structure for facilitating observation of the state of the battery pack.
In an example of the cutting tool of the present invention, an encapsulating structure is disposed on an interface between the bag cavity cover and the bag cavity body.
In one example of the cutting tool of the present invention, the encapsulated structure is provided with an anti-slip structure.
In one example of the cutting tool of the present invention, a snap structure is provided between the cavity cover and the cavity body.
In one example of the cutting tool of the present invention, the mating surface between the pocket cover and the pocket body is higher than the top of the housing of the cutting tool in a normal operating state.
In one example of the cutting tool of the present invention, the bag cavity cover and the bag cavity body are connected by a rotating shaft at one side and locked by a locking structure at the other side.
In an example of the cutting tool of the present invention, the locking structure includes a first hook, a second hook and a bracket, the first hook is mounted on the bag cover and has a first hook, one end of the bracket is rotatably mounted on the bag cover, one end of the second hook is connected to the other end of the bracket, and an end of the second hook facing away from the bracket has a second hook, and the second hook is engaged with the first hook.
In an example of the cutting tool of the present invention, the air outlet is flush with the second heat dissipating hole.
In an example of the cutting tool of the present invention, the battery pack is further provided with a third heat sink, and the air inlet is also communicated with the third heat sink.
In an example of the cutting tool of the present invention, the first heat dissipating part and the third heat dissipating part are disposed on the first side wall of the battery pack, a cooling air duct is disposed between the first side wall and a wall body of the cavity of the battery pack, and the cooling air is communicated with the air inlet.
In one example of the cutting tool of the present invention, the second heat sink member is provided on a second side wall opposite to the first side wall.
In an example of the cutting tool of the present invention, a positioning and matching structure is disposed between the second side wall and the side wall of the battery pack cavity.
In one example of the cutting tool of the present invention, the electrical terminal of the battery pack is disposed on the second side wall.
In one example of the cutting tool of the present invention, the second side wall is provided on a side facing the cutting tool drive motor.
In one example of the cutting tool of the present invention, the air inlet is provided with a filter structure.
In an example of the cutting tool of the present invention, a spray cooling part is mounted on the cutting part, and the spray cooling part includes: the outer part of a blade of the cutting part is provided with a blade shield, and the side wall of the blade shield is provided with a connecting through hole; a connecting rod is arranged on the spray head, a pressing block is arranged at one end of the connecting rod, and a spray opening is formed in the other end of the connecting rod; the adapter is provided with at least one pipe joint, a through liquid storage cavity is arranged inside the adapter, and a flow passage opening of the at least one pipe joint is communicated with the liquid storage cavity; the connecting rod has the one end that sprays the mouth and passes the liquid storage chamber and be connected with connect the via hole, and the compact heap is sealed the shutoff on the one end opening in liquid storage chamber, and the lateral wall is sealed the shutoff on the other end opening in liquid storage chamber, sprays the mouth and is linked together with the liquid storage chamber.
In an example of the cutting tool of the present invention, a first end face sealing structure is provided between the compression block and the adapter.
In one example of the cutting tool of the present invention, the first end seal structure includes an adapter seal surface disposed on the adapter and a first seal surface disposed on the compression block, and at least one seal body disposed between the adapter seal surface and the first compression block seal surface.
In one example of the cutting tool of the present invention, the side of the pressing block facing the connecting rod is provided with a first boss, and the first sealing surface is provided on an end surface of the first boss.
In one example of the cutting tool of the present invention, the holding-down block is provided with a dust-proof rib.
In one example of the cutting tool of the present invention, the first sealing surface and/or the adapter sealing surface is provided with a groove, and the sealing body is mounted in the groove.
In one example of the cutting tool of the present invention, a second face seal arrangement is provided between the side wall and the adapter.
In one example of the cutting tool of the present invention, the second end face seal arrangement includes an adapter seal surface disposed on the adapter and a second seal surface disposed on the side wall, and at least one seal body compressed between the adapter seal surface and the second seal surface.
In one example of the cutting tool of the present invention, the side wall is provided with a second boss, and the second sealing surface is provided on an end surface of the second boss.
In one example of the cutting tool of the present invention, the second sealing surface and/or the adapter sealing surface is provided with a groove, and the sealing body is mounted in the groove.
In one example of the cutting tool of the present invention, the adapter sealing surface is recessed within the adapter reservoir.
In one example of the cutting tool of the present invention, the adapter is made of plastic, and the sealing body is at least one raised structure disposed on the sealing surface of the adapter, wherein the raised structure surrounds and surrounds the opening of the reservoir.
In one example of the cutting tool of the present invention, the sealing body is an O-ring.
In one example of the cutting tool of the present invention, the outer wall of the connecting rod and the inner wall of the reservoir chamber have a gap therebetween, the gap being surrounded along the outer wall of the connecting rod.
In one example of the cutting tool of the present invention, the reservoir and the connecting rod are both cylindrical and are coaxially disposed.
In one example of the cutting tool of the present invention, a projection projecting in the radial direction is provided in the circumferential direction of the pipe joint.
In one example of the cutting tool of the present invention, the male portion has a guiding taper thereon, the small end of the guiding taper facing away from the reservoir.
In an example of the cutting tool of the present invention, a positioning structure is disposed between the sidewall and the adapter.
In one example of the cutting tool of the present invention, a first spray cooling portion is mounted on the guard on one side of the cutting tool blade, and a second spray cooling portion is mounted on the guard on the other side of the cutting tool blade.
In one example of the cutting tool of the present invention, the adapter of the first spray cooling section is provided with two pipe joints, one of which is connected to the coolant supply main pipe, the other of which is connected to one end of the branch pipe, and the other end of the branch pipe is connected to the pipe joint of the second spray cooling section.
In one example of the cutting tool of the present invention, the edge of the blade guard is provided with a limiting hole through which the shunt pipe passes.
In one example of the cutting tool of the present invention, the limit hole is provided on the adjustment handle mount of the blade guard.
In one example of the cutting tool of the present invention, the first spray cooling portion is located on a side of the blade guard facing away from the blade drive system, and the coolant supply manifold is routed along the housing of the cutting tool to the side of the blade guard facing away from the blade drive system and connected to the pipe joint.
In one example of the cutting tool of the present invention, the housing is provided with a coolant supply main pipe installation groove, and the coolant supply main pipe is installed in the coolant supply main pipe installation groove.
In one example of the cutting tool, at least one first blocking piece is installed on one side of the opening of the installation groove, at least one second blocking piece is installed on the other side of the opening of the installation groove, and the first blocking piece and the second blocking piece are distributed in a staggered mode and extend out of the cantilever towards the opposite side of the opening.
In one example of the cutting tool of the present invention, the blade guard is provided with a pipe clamp having a pipe passing hole through which a coolant supply main pipe is connected to the pipe joint.
In one example of the cutting tool of the present invention, the blade guard has a threaded hole, the tube clamp has a elongated hole, and the fixing bolt is connected to the threaded hole through the elongated hole.
In one example of the cutting tool of the present invention, a guard adjusting part is mounted on the cutting part of the cutting tool, and the guard adjusting part includes: a shield adjusting mechanism and an adjusting track groove; a blade shield is rotatably arranged outside the blade of the cutting part; the protective cover adjusting mechanism is arranged on the cutting tool shell, a sliding block is arranged on the protective cover adjusting mechanism, and the sliding block moves in a reciprocating mode along a first linear extending direction; the adjusting track groove is arranged on the outer wall of the blade shield, and an arc-shaped track groove and a plurality of limiting grooves are arranged in the adjusting track groove; the arc-shaped track groove is coaxial with the rotating shaft of the blade shield; the plurality of limiting grooves are arranged on one side of the arc-shaped track groove and are communicated with the arc-shaped track groove; the sliding block is inserted into the adjusting track groove and reciprocates between the limiting groove or the arc track groove in the process of reciprocating along the first straight line.
In an example of the cutting tool, a slide block anti-falling device is arranged in the guard adjusting mechanism, wherein the slide block anti-falling device comprises an elastic body, and the slide block is pressed against one side of the limiting groove, which is far away from the arc-shaped track groove, under the elastic force of the elastic body.
In an example of the cutting tool of the present invention, the sliding elastic body is an elastic pulling body, and the sliding block is pressed against a side of the limiting groove away from the arc-shaped track groove under the pulling force of the elastic pulling body.
In one example of the cutting tool of the present invention, the elastic pulling body is a tension spring.
In an example of the cutting tool of the present invention, the elastic body is an elastic pressing body, and the slider is pressed against one side of the limiting groove away from the arc-shaped rail groove under the pressure of the elastic pressing body.
In one example of the cutting tool of the present invention, the elastic pressing body is a pressure spring.
In an example of the cutting tool of the present invention, the shield adjusting mechanism includes a sliding mounting seat, the slider is mounted on the sliding mounting seat, a rail through hole is formed in the cutting tool housing, an extending direction of the rail through hole is parallel to the first straight line, and the sliding mounting seat is inserted into the rail through hole and moves linearly along the extending direction of the rail through hole.
In one example of the cutting tool of the present invention, the portion of the slide mount exposed outside the cutting tool housing is provided with an operating portion, wherein the operating portion includes an arc-shaped operating surface.
In one example of the cutting tool of the present invention, the operating portion is detachably mounted on the slide mount.
In one example of the cutting tool of the present invention, the guard adjustment mechanism is mounted within a housing of the cutting tool blade drive system, and a dust guard is also mounted on the side of the housing facing the cutting guard.
In an example of the cutting tool, the dust-proof baffle is provided with a guide through hole, the extending direction of the guide through hole is parallel to the first linear direction, the sliding block is provided with a first stopping body, the end part of the sliding block penetrates through the guide through hole and extends into the adjusting track groove, and the first stopping body stops outside the opening of the guide through hole.
In an example of the cutting tool, the sliding mounting seat is further provided with a guide body, the size of a guide section of the guide body is matched with that of the guide through hole, the guide body is provided with a second stop body, the guide section is inserted into the guide through hole, and the second stop body stops outside an opening of the guide through hole.
In one example of the cutting tool of the present invention, a spring is disposed in the guard adjustment mechanism, one end of the spring is mounted on the housing of the blade transmission system, and the other end of the spring is mounted on the guide body, and the extension direction is parallel to the first straight line.
In one example of the cutting tool of the present invention, the guide body is provided with a groove for facilitating hooking of the spring.
In an example of the cutting tool of the present invention, the arc-shaped track groove is disposed on a side of the limiting groove facing away from the center of the rotating shaft.
In an example of the cutting tool of the present invention, the side of each of the plurality of limiting grooves departing from the arc-shaped track groove is provided with a closed arc segment, wherein an included angle between a circle center of each adjacent closed arc segment and a connecting line of the axis of the rotating shaft is 10 to 15 °.
In an example of the cutting tool of the present invention, five limiting grooves are communicated with the arc-shaped track groove, and the five limiting grooves are distributed and arranged within a set adjustment angle range.
In one example of the cutting tool of the present invention, the portion of the slider inserted into the adjustment track groove is a cylindrical body.
In one example of the cutting tool of the present invention, the cylinder is rotatably mounted on the block.
The invention also provides a cooling method of the cutting tool battery pack, which comprises the following steps: forcing the airflow to enter the battery pack from at least one heat dissipation hole of the battery pack and to be exhausted out of the battery pack through other heat dissipation holes.
In one example of the cooling method of the present invention, a fan mounted on the cutting tool drive motor is used to power the air flow.
In summary, the cutting tool of the invention seals and installs the battery pack in the battery pack cavity, which not only can effectively prevent the corrosion and pollution of dust and cooling liquid to the battery pack, but also forces the air flow to flow through the gaps between the battery cells in the battery pack through the corresponding communication relation between the air inlet and the air outlet on the battery pack cavity and the heat dissipation holes on the battery pack, thereby changing the self diffusion type heating of the battery pack into the circulating type air suction cooling, and improving the heat dissipation state of the battery pack. The cooling method of the battery pack of the cutting tool changes the passive diffusion type heat dissipation of the battery pack into the active circulation type heat dissipation of the battery pack, thereby greatly improving the heat dissipation effect of the battery pack.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 shows a partially cut-away view of a housing of a cutting tool of the present invention;
FIG. 2 shows a half-sectional view of a cutting tool in an embodiment of the cutting tool of the present invention;
FIG. 3 is an enlarged view of a portion of the area I in FIG. 2;
FIG. 4 shows a view of a battery pack in an embodiment of the cutting tool of the present invention;
FIG. 5 is a view of a battery pack in another orientation in an embodiment of the cutting tool of the present invention;
FIG. 6 is a partial cross-sectional view of a portion of a cutting tool of an embodiment of the present invention where a cavity cover is engaged with a cavity;
FIG. 7 is an enlarged view of a portion of the area II in FIG. 6;
FIG. 8 is a view of a cavity cover in an embodiment of the cutting tool of the present invention;
FIG. 9 is another view of a cavity cap in an embodiment of the cutting tool of the present invention;
FIG. 10 is a front view of a cavity cover in an embodiment of the cutting tool of the present invention;
FIG. 11 is a left side view of FIG. 10;
FIG. 12 is a schematic view of the spray cooling portion of an embodiment of the cutting tool of the present invention;
FIG. 13 is a schematic view of an adapter in a spray cooling portion of an embodiment of a cutting tool of the present invention;
FIG. 14 is a schematic view of an adapter in a spray cooling portion of another embodiment of a cutting tool of the present invention;
FIG. 15 is a schematic view of a positioning protrusion on a second boss of the spray cooling section according to an embodiment of the cutting tool of the present invention;
FIG. 16 is a cross-sectional view of a spray cooling portion of an embodiment of a cutting tool of the present invention;
FIG. 17 is an enlarged view of a portion of the area III in FIG. 16;
FIG. 18 is a side view of the blade drive system of one embodiment of the cutting tool of the present invention;
FIG. 19 shows a side view of one embodiment of the cutting tool of the present invention facing away from the blade drive system;
FIG. 20 is an exploded view of one embodiment of the cutting tool of the present invention;
FIG. 21 is a schematic view of a clamp structure of an embodiment of the cutting tool of the present invention
FIG. 22 is a schematic view of a cutting tool in accordance with an embodiment of the present invention;
FIG. 23 is an enlarged view of a portion of the area IV in FIG. 22;
FIG. 24 is a schematic view of a rear guard adjustment mechanism of an embodiment of a cutting tool of the present invention with the cutting tool blade drive system removed;
FIG. 25 is an exploded view of an adjustment mechanism in an embodiment of the cutting tool of the present invention;
FIG. 26 is a schematic view of the installation of the dust guard, blade guard adjustment mechanism on the blade drive train housing;
FIG. 27 is an enlarged view of a portion of the area VI in FIG. 26;
FIG. 28 is a schematic view of an embodiment of a blade guard adjustment mechanism and an adjustment track groove of the cutting tool of the present invention;
fig. 29 is an exploded view of the blade guard mounting structure on the blade drive housing in one embodiment of the cutting tool of the present invention.
Description of the element reference numerals
100. A housing; 200. a power supply unit; 300. a drive section; 400. a cutting section; 500. a cooling spray part; 600. a blade drive train housing; 700. a shield adjustment mechanism; 101. an air outlet; 102. a first handle; 103. a second handle; 110. an air inlet; 120. an air outlet; 130. a battery pack cavity; 131. a bag cavity body; 132. a cavity cover; 210. a battery pack; 211. a first side wall; 2111. a first heat sink portion; 2112. a third heat sink portion; 212. a second side wall; 2121. a second heat sink member; 2122. positioning the surface; 2123. an electric terminal is connected; 213. an electric core; 214. a battery button; 215. an electric quantity display module; 1324. a pin shaft; 134. a locking structure; 133. a cooling air passage; 1311. a second hook body; 1312. a connecting rod; 1313. a support; 1321. a rubber coating structure; 1322. an anti-slip structure; 1323. a first hook body; 1324. a pin shaft through hole; 1325. a claw; 401. a blade; 410. a blade guard; 500a, a first cooling spray part; 500b, a second cooling spray part; 550. a diversion pipeline; 530. a coolant supply main pipe; 413. adjusting the handle; 510. a shower head; 510a, a first spray header; 510b, a second spray header; 520. an adapter; 520a, a first adapter; 520b and a second adapter; 530. a first sealing body; 540. a second sealing body; 511. a spray port; 511a and a first spraying port; 511b and a second spraying port; 512. a liquid inlet; 513. a channel; 514. a first boss; 515. a first sealing surface; 516. a compression block; 517. a connecting rod; 518. a dustproof flange; 527. a second cylindrical surface; 521. a first adapter sealing surface; 522. a second adapter sealing surface; 523. a liquid storage cavity; 524. a pipe joint; 524a, a first pipe joint; 524b, a second pipe joint; 526. a positioning groove; 525. a header pipe joint; 5241. a convex portion; 5242. a guiding conical surface; 5243. a cylindrical section; 5244. a flow passage opening; 4111. a connecting through hole; 412. a second boss; 413. a second sealing surface; 414. a positioning projection; 411. a shroud sidewall; 411a, first shroud sidewall; 411b, second shroud sidewall; 523. an adjusting handle mounting base; 5231. a limiting hole; 5310. clamping a hoop; 540. a pipe clamp; 5411. a pipeline is passed through a hole; 5412. a strip hole; 560. a valve; 570. a quick-change connector; 110. a coolant supply main pipe installation groove; 111. a first baffle plate; 112. a second baffle plate; 4710. a first handle body; 4720. a second handle body; 420. adjusting the track groove; 5600. a dust-proof baffle plate; 710. a slider; 711. a first stopper body; 720. a slider mounting base; 721. a first mounting hole; 722. a second mounting hole; 723. a third mounting hole; 730. an operation section; 731. an arc-shaped operation surface; 740. a slide block anti-falling device; 750. a guide body; 751. a second stopper body; 752. an annular groove; 760. a first screw; 770. a first pin body; 4210. an arc-shaped track groove; 4220. a limiting groove; 610. and a guide through hole.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and the description of the present invention, and any methods, apparatuses, and materials similar or equivalent to those in the embodiments of the present invention may be used to practice the present invention.
Please refer to fig. 1 to 5. Wherein FIG. 1 shows a partially cut-away view of a housing of a cutting tool of the present invention; FIG. 2 shows a half-sectional view of a cutting tool in an embodiment of the cutting tool of the present invention; FIG. 3 is an enlarged view of a portion of the area I in FIG. 2; FIG. 4 shows a view of a battery pack in an embodiment of the cutting tool of the present invention; fig. 5 is a view showing another direction of the battery pack according to an embodiment of the cutting tool of the present invention. The invention provides a cutting tool, wherein a battery pack 210 is hermetically arranged in a battery pack cavity 130 by the cutting tool, so that not only can the corrosion and pollution of dust and cooling liquid to the battery pack 210 be effectively prevented, but also the air flow is forced to flow through gaps among electric cores 213 in the battery pack 210 through the corresponding communication relation among an air inlet 110 and an air outlet 120 on the battery pack cavity 130 and heat dissipation holes on the battery pack 210, so that the diffusion type heating of the battery pack 210 is changed into the circulating type air suction cooling, the heat dissipation state of the battery pack 210 can be improved, and the problems that the battery pack 210 is easy to be polluted and the cooling effect is poor in the existing cutting tool can be solved.
Referring to fig. 1 to 3, the cutting tool of the present invention includes a housing 100, a cutting portion 400, a driving portion 300 and a power supply portion 200, wherein the driving portion 300 provides power for the cutting portion 400, the power supply portion 200 provides power for the driving portion 300, and the power supply portion includes: a battery pack 210, an intake vent 110, an outlet vent 120, and an air exhaust (not shown). Referring to fig. 4 and 5, a battery pack cavity 130 capable of accommodating a battery pack 210 is formed in a housing 100 of the cutting tool, the battery pack 210 is hermetically mounted in the battery pack cavity 130 of the cutting tool, a first heat dissipation portion 2111 and a second heat dissipation portion 2121 are formed in the battery pack 210, the first heat dissipation portion 2111 includes at least one first heat dissipation hole, and the second heat dissipation portion 2121 includes at least one second heat dissipation hole. The battery pack 210 is mounted within the battery pack cavity 130 and is electrically coupled to the other power components of the cutting tool via an electrical interface to provide electrical power to the other power components of the cutting tool. The air inlet 110 is disposed on the housing 100 of the cutting tool, and communicates with at least one first heat dissipating hole in the first heat dissipating portion 2111 through the wall of the battery pack cavity 130. The air outlet 120 is disposed on the wall of the battery pack cavity 130, and communicates with at least one second heat dissipating hole in the second heat dissipating part 2121 through the wall of the battery pack cavity 130. The air draft device is arranged in the shell 100, an air draft opening of the air draft device is communicated with the air outlet 120, air flow sucked from the air outlet 120 is sucked into a motor cavity by the air draft device, and finally the air flow is discharged out of the shell 100 of the cutting tool through the air exhaust opening 101 formed in the side face of the shell 100. In one example of the cutting tool of the present invention, the air inlet 110 is provided with a filter structure (not shown) that can filter the incoming air flow to prevent dust from entering the battery pack 210.
It can be seen from the above structure that, in the present invention, the air inlet 110 is communicated with at least one first heat dissipation hole in the first heat dissipation portion 2111, and the air outlet 120 is communicated with at least one second heat dissipation hole in the second heat dissipation portion 2121, when the air pressure at the air outlet 120 side is smaller than the air pressure at the air inlet 110 side under the action of the air draft device, the air flow enters the electric core 213 mounting cavity of the battery pack 210 through the air inlet 110, further flows from the gap between the electric cores 213 to reach the air outlet 120, and finally is discharged from the air outlet 120, so that the cooling structure of the battery pack 210 of the cutting tool of the present invention can change the self-diffusion heating of the battery pack 210 into the circulation-type air draft cooling, thereby improving the heat dissipation state of the battery pack 210.
Referring to fig. 2 and 3, in an example of the cutting tool of the present invention, the air inlet 110 is disposed at the bottom of the battery pack chamber 130 in consideration of the fact that dust and coolant fall from top to bottom by gravity. Dust and coolant can be prevented from entering the air inlet 110 during the falling process.
The arrangement form of the present invention is not limited, and it can basically satisfy the cooling requirement of the battery pack 210 of the present invention as long as the air outlet 120 can suck air to generate airflow flowing between the air inlet 110 and the air outlet 120, and the air draft device can also be arranged independently, in an example of the cutting tool of the present invention, the air draft device is a fan installed on the rotating shaft of the driving motor of the cutting tool, the air suction side of the fan faces the air outlet 120, and the air blowing side of the fan faces the air outlet 101 on the housing 100.
Referring to fig. 2, to maintain balance throughout the hand held cutting tool, in one example of the cutting tool of the present invention, a battery pack chamber 130 is disposed behind the cutting tool drive motor and between first handle 102 and second handle 103. Such that the heavier battery pack 210 may be matched to balance the cutting bit cantilevered from the other side of the drive motor.
Referring to fig. 2 and 3, the battery pack 210 is mounted in the battery pack cavity 130 in a non-limiting manner, and in an example of the cutting tool of the present invention, the battery pack 210 is detachably connected to the battery pack cavity 130. The removable mounting allows for replacement of the battery pack 210 after the battery pack 210 is damaged.
Referring to fig. 6 to 11, fig. 6 is a partial cross-sectional view illustrating a fastening position of the bag cavity cover 132 and the bag cavity 131 according to an embodiment of the cutting tool of the present invention; FIG. 7 is a schematic diagram of the locking structure 134 of FIG. 7; FIG. 8 shows a view of the cavity cover 132 in an embodiment of the cutting tool of the present invention; FIG. 9 shows another view of the cavity cover 132 in an embodiment of the cutting tool of the present invention; FIG. 10 illustrates a front view of the cavity cover 132 in an embodiment of the cutting tool of the present invention; fig. 11 is a left side view of fig. 10. In the present invention, the arrangement form of the battery pack cavity 130 is not limited, and in an example of the cutting tool of the present invention, the battery pack cavity 130 includes a pack cavity 131 and a pack cavity cover 132, the battery pack 210 is vertically inserted downward into the battery pack cavity 130, and the pack cavity cover 132 is hermetically mounted on an opening of the pack cavity 131. Considering that the battery button 214 and the power display module 215 are disposed on the top of the conventional battery pack 210, in an example of the cutting tool of the present invention, the pack cavity cover 132 is provided with a transparent structure for facilitating observation of the state of the battery pack 210. The transparent structure can be made of transparent plastic with better abrasion-resistant and falling-resistant effects. In order to facilitate the sealing between the pouch cover 132 and the pouch body 131, in an example of the cutting tool of the present invention, a rubber-coating structure 1321 is disposed at an interface between the pouch cover 132 and the pouch body 131, and the rubber-coating structure 1321 surrounds a circle along an opening of the pouch cover 132 and is directly matched with an upper opening of the pouch body 131, so that the sealing state of the battery pouch 130 can be effectively improved. The rubber-coated structure 1321 is provided with an anti-skid structure 1322, and the anti-skid structure 1322 is a plurality of convex parts or grooves which are arranged on the rubber-coated structure 1321 and are arranged in parallel and extend along a straight line direction. The detachable mounting manner of the bag cavity cover 132 on the bag cavity 131 in the present invention may be various structures, such as a snap-fit form commonly used in the existing sealed fuse box, in the present novel use example, a snap-fit structure is provided between the bag cavity cover 132 and the bag cavity 131, the snap-fit structure may also be any suitable snap-fit form, for example, a claw 1325 provided on the bag cavity cover 132 and capable of being inserted into the bag cavity 131, when the claw 1325 is inserted into the bag cavity 131, the claw 1325 is elastically deformed under the guidance of the wedge-shaped guide surface and is clamped on a stop table provided in the bag cavity 131, and in view of the wide application of the snap-fit, the detailed structure of the snap-fit in the present invention is not described herein in detail.
The height of the mating surface between the bag cavity 131 and the bag cavity cover 132 in the present invention is not limited, and in an example of the cutting tool of the present invention, the mating surface between the bag cavity cover 132 and the bag cavity 131 is higher than the top of the housing 100 of the cutting tool in a normal working state. In this case, the splashed coolant does not collect at the opening position of the pack cavity 131, and the coolant can be prevented from entering the battery pack cavity 130 to cause a circuit failure.
Referring to fig. 6 and 7, in an example of the cutting tool of the present invention, a pin through hole 1324 is formed in one side of the bag cavity cover 132, the pin through hole 1324 is rotatably connected to one side of the bag cavity 131 by a pin 1324, and the bag cavity cover 132 and the other side of the bag cavity 131 are locked by a locking structure 134. The locking structure 134 comprises a first hook 1323, a second hook 1311 and a connecting rod 1312, the first hook 1323 is mounted on the bag cover 132 and provided with a first hook, the bag 131 is provided with a bracket 1313, one end of the connecting rod 1312 is rotatably mounted on the bracket 1313, one end of the second hook 1311 is connected with the other end of the connecting rod 1312, and one end of the second hook 1311, which is far away from the connecting rod 1312, is provided with a second hook, and the second hook is matched with the first hook. This structure can ensure the sealing between the cavity cover 132 and the cavity 131, and can make the cavity cover 132 hang to the open side of the cavity 131 when opening, regardless of the placement of the cavity cover 132.
Referring to fig. 3, in an example of the cutting tool of the present invention, a third heat dissipation portion 2112 is further disposed on the battery pack 210, and the air inlet is also communicated with at least one third heat dissipation hole in the third heat dissipation control group. The first heat dissipating part 2111 and the third heat dissipating part 2112 are disposed on the first side wall 211 of the battery pack 210, a cooling air duct 133 is disposed between the first side wall 211 and a wall body of the battery pack cavity 130, and the cooling air duct 133 is communicated with the air inlet 110. In one example of the cutting tool of the present invention, the second heat sink member 2121 is provided on the second side wall 212 opposite to the first side wall 211, and the second side wall 212 is provided on a side facing the cutting tool drive motor. A positioning matching structure is arranged between the second side wall 212 and the side wall of the battery pack cavity 130, a positioning surface 2122 is arranged on the second side wall 212, the positioning surface 2122 is tightly attached to the inner wall of the pack cavity 131, and the air outlet 120 is flush with the second heat dissipation hole. In an example of the cutting tool of the present invention, the electrical terminals 2123 of the battery pack 210 are disposed on the second sidewall 212 and located at the lower portion of the second heat dissipation hole.
Please refer to fig. 12 to 15. Fig. 12 is a schematic view illustrating an installation of a spray cooling part according to an embodiment of the cutting tool of the present invention; FIG. 13 is a schematic view of an adapter in a spray cooling portion of an embodiment of a cutting tool of the present invention; FIG. 14 is a schematic view of an adapter in a spray cooling portion of another embodiment of a cutting tool of the present invention; fig. 15 is a schematic structural view of a positioning protrusion on a second boss in the spray cooling part according to an embodiment of the cutting tool of the present invention. In an example of the cutting tool, the cutting tool further comprises a spray cooling part, and the cutting tool can also solve the problems of poor sealing and complex installation of a spray head of the existing cutting tool. According to the cutting tool, the connecting rod 517 in the spray cooling part is directly in threaded connection with the connecting through hole 4111 in the side wall, the openings at two ends of the liquid storage cavity 523 are sealed and compressed through the axial force of the threaded connection, the sealing positions are relatively few, the spray cooling part is relatively simple, the sealing safety is high, and the installation is relatively convenient.
Referring to fig. 1 and 12, the spray cooling part of the cutting tool of the present invention includes: a blade shroud 410, a showerhead 510, and an adapter 520. The blade guard 410 is disposed outside the blade 401 to prevent an operator from contacting the blade 401 during operation and being injured, and the guard sidewall 411 is provided with a connection through hole 4111, and the connection through hole 4111 penetrates through the guard sidewall 411. The through direction of the connecting through hole 4111 may be parallel to the extending direction of the rotating shaft of the blade 401, or may be slightly inclined as necessary to spray the cooling liquid to a designated position on the surface of the blade 401. The spray head 510 is provided with a connecting rod 517 with a cantilever extending out, one end of the connecting rod 517 is provided with a pressing block 516, the end face of the other end of the connecting rod 517 is provided with a spray opening 511, the side wall of the connecting rod 517 is provided with at least one liquid inlet 512, the liquid inlet 512 is communicated with the spray opening 511, it should be noted that, in the invention, the communication mode between the liquid inlet 512 and the spray opening 511 on the connecting rod 517 in the connecting rod 517 is not limited, in one example of the cutting tool of the invention, a channel 513 extending along the axial line is arranged in the connecting rod 517, one end of the channel 513 runs through the end face of the cantilever extending end of the connecting rod 517 and forms the spray opening 511, the liquid inlet 512 is provided with at least one, and runs through one side wall body of the connecting rod 517 along the radial direction. It should be noted that the arrangement of the flow channel in the connecting rod 517 in the present invention may be any other suitable means, and is not limited to the above arrangement. The adapter 520 is provided with at least one pipe joint 524, a through liquid storage cavity 523 is arranged inside the adapter 520, and the flow passage opening 5244 of the at least one pipe joint 524 is communicated with the liquid storage cavity 523. The number of the pipe joints 524 can be set as required, please refer to fig. 13, fig. 13 is a structural diagram of the adapter 520 in the installation diagram of the spray cooling part in the cutting tool of the present invention, for example, in the cutting tool of the present invention, the adapter 520 on the side wall of the shroud on one side of the blade 401 needs to be communicated with the cooling liquid supply main pipe 530 and the branch pipe 550 branching to the spray head 510 on the other side, so two pipe joints 524, which are the main pipe joint 525 and the first pipe joint 524a, are disposed thereon. Referring to fig. 14, fig. 14 is a schematic structural diagram of an adapter 520 of another embodiment of a spray cooling portion of a cutting tool spray header 510 of the present invention, the adapter 520 on the other side wall of the cutting insert 401 only needs to be communicated with a diversion pipeline 550, so that only one pipe joint 524 is disposed thereon, and the pipe joint 524 is a second pipe joint 524 b. Of course, if more shower points are desired, three or more pipe joints 524 may be provided, which is not illustrated here. In the structure, one end of the connecting rod 517, which is provided with the spraying port 511, penetrates through the liquid storage cavity 523 and the connecting through hole 4111 to be in threaded connection, the pressing block 516 is sealed and blocked on an opening at one end of the liquid storage cavity 523 under the action of the axial force of the threaded connection, the pressing block 516 presses the adapter 520 to extrude the side wall, the side wall is sealed and blocked on an opening at the other end of the liquid storage cavity 523, and the liquid inlet 512 is communicated with the liquid storage cavity 523.
With continued reference to fig. 12, as long as the sealing and blocking of the pressing block 516 on the opening of the liquid storage cavity 523 of the adapter 520 can be achieved under the axial force of the threaded connection, the sealing form between the pressing block 516 and the adapter 520 is not limited, but considering that the end face sealing has a more obvious advantage under the axial force, in an example of the cutting tool of the present invention, a first end face sealing structure is disposed between the pressing block 516 and the adapter 520. The first end face seal arrangement includes a first adapter seal face 521 disposed on adapter 520 and a first seal face 515 disposed on compression block 516, and at least one first seal body 530 disposed between first adapter seal face 521 and first seal face 515. The position and arrangement of the first sealing surface 515 on the pressing block 516 are not limited as long as the end face sealing of the pressing block 516 on the opening of the reservoir 523 can be realized, and in an example of the cutting tool of the present invention, the side of the pressing block 516 facing the connecting rod 517 is provided with a first boss 514, and the first sealing surface 515 is arranged on the end face of the first boss 514. The first adapter sealing surface 521 is recessed within the fluid storage cavity 523 of the adapter 520. This arrangement may reduce the exposure of the first sealing body 530 to dust and air, which may make the sealing more reliable. In an example of the cutting tool of the present invention, an outer side surface of the first boss 514 is a first cylindrical surface, a corresponding side wall of the first opening of the reservoir chamber 523 is a second cylindrical surface 527, and the first cylindrical surface and the second cylindrical surface 527 are coaxially disposed and maintain a certain gap, so as to form a gap seal between the first cylindrical surface and the second cylindrical surface 527. In one example of a cutting tool of the present invention, dust ribs 518 are provided on the compact block 516. A gap is formed between the dustproof flange 518 and the outer end face of the adapter 520, the gap is communicated with the gap between the first cylindrical surface and the second cylindrical surface 527, the distance of gap sealing can be increased, and the blocking effect of dust can be enhanced.
As long as the sealing and plugging of the side wall at the end of the liquid storage cavity 523 of the adapter 520 can be realized under the axial force of the threaded connection, the sealing form between the side wall and the adapter 520 is not limited, please refer to fig. 12 continuously, in an example of the cutting tool of the present invention, a second end face sealing structure is disposed between the side wall and the adapter 520. The second end face seal arrangement includes a second adapter sealing surface 522 disposed on the adapter 520 and a second sealing surface 413 disposed on the side wall, and at least one second seal body 540 compressed between the second adapter sealing surface 522 and the second sealing surface 413. The side wall is provided with a second boss 412 and a second sealing surface 413 is provided on an end face of the second boss 412. A second adapter sealing surface 522 is recessed into a fluid storage cavity 523 of the adapter 520. This arrangement not only improves the sealing instability due to the uneven sidewalls, but also reduces the exposure of the second sealing body 540 to dust and air. In an example of the cutting tool of the present invention, the outer side surface of the second boss 412 is a third cylindrical surface, the corresponding side wall of the second opening of the reservoir 523 is a fourth cylindrical surface, and the third cylindrical surface and the fourth cylindrical surface are coaxially disposed and maintain a certain gap, so as to form a gap seal between the third cylindrical surface and the fourth cylindrical surface. In an example of the cutting tool of the present invention, a gap is also formed between an end surface of the adapter 520 facing the side wall and the side wall, and the gap is communicated with a gap between the third cylindrical surface and the fourth cylindrical surface, so that a gap sealing distance can be increased, and a dust blocking effect can be enhanced.
The structure and material of the first sealing body 530 and/or the second sealing body 540 are not limited in the present invention, and may be any suitable sealing body, for example, a conventional arrangement form such as a silicone gasket, a rubber gasket, etc., in an example of the cutting tool of the present invention, the first sealing body 530 and the second sealing body 540 are O-rings, a first groove for mounting the O-rings is provided on the first sealing surface 515 and/or the first adapter sealing surface 521, a second groove for mounting the O-rings is provided on the second sealing surface 413 and/or the second adapter sealing surface 522, and the shape and size of the first groove and the second groove are matched with the corresponding type of the O-rings. The O-shaped rings are respectively arranged in the first groove and the second groove and form end face sealing under the action of extrusion force.
With continued reference to fig. 12, in view of simplicity of installation, it is preferable that in one example of the cutting tool of the present invention, the adapter 520 is made of plastic, and the first sealing element 530 and the second sealing element 540 are at least one protrusion structure respectively disposed on the first adapter sealing surface 521 and the second adapter sealing surface 522, and the protrusion structure surrounds the opening of the fluid storage cavity 523 and is integrally formed with the adapter. The first sealing body 530 and the second sealing body 540 and the adapter 520 can be made into an integral structure, sealing is realized through compression deformation of the convex structures, and other sealing elements do not need to be additionally installed.
Referring to fig. 12, the communication manner between the liquid inlet 512 and the liquid storage cavity 523 is not limited, for example, a circumferential groove may be formed on the connecting rod 517 at a position corresponding to the liquid inlet 512, so as to reduce the misalignment between the liquid inlet 512 and the flow channel opening in the pipe joint 524 caused by the rotation of the connecting rod 517. To reduce pressure loss, in one example of the cutting tool of the present invention, the reservoir 523 and the connecting rod 517 are preferably cylindrical and are coaxially disposed.
Referring to fig. 12, the structure of the pipe joint 524 on the adapter 520 is not limited as long as the reliable connection with the pipe can be achieved, and in an example of the cutting tool of the present invention, considering that the branch pipe 550 and the main coolant supply pipe are both flexible pipes, a radially protruding protrusion 5241 is disposed on the pipe joint 524 in the circumferential direction, the protrusion 5241 has a guiding tapered surface 5242, and the small end of the guiding tapered surface 5242 faces away from the reservoir 523. The tube can be gradually pulled over the coupler 524 along the guide taper 5242 as the tube is installed. In order to increase the reliability of the connection, in an example of the cutting tool of the present invention, the side of the convex portion 5241 facing the reservoir 523 is provided with a cylindrical section 5243, and the hose is sleeved outside the cylindrical section 5243 and clamped on the cylindrical section 5243 by a clamp 5310, which can increase the reliability of the pipe installation.
Referring to fig. 15, fig. 15 is a schematic structural view of a positioning protrusion on the second boss in an embodiment of an installation schematic view of the spray cooling part in an embodiment of the cutting tool of the present invention. In view of the accuracy of the positioning of the tube connector 524 on the shroud sidewall at the adapter 520, a locating structure is provided between the second boss 412 of the sidewall and the adapter 520 in one example of the cutting tool of the present invention. The positioning structure can realize any suitable structure for positioning and mounting the adapter 520 on the second boss 412, in an example of the cutting tool of the present invention, the second boss 412 is provided with a positioning protrusion 414, the adapter 520 is provided with a positioning groove 526 matching with the positioning protrusion 414, and the positioning protrusion 414 is clamped in the positioning groove 526 for positioning.
Referring to fig. 16 to 20, fig. 16 is a schematic cross-sectional view of a spray cooling portion of a cutting tool according to an embodiment of the present invention;
FIG. 17 is an enlarged view of a portion of the area III in FIG. 16; FIG. 18 is a side view of the blade drive system of one embodiment of the cutting tool of the present invention; FIG. 19 shows a side view of one embodiment of the cutting tool of the present invention facing away from the blade drive system; fig. 20 is an exploded view of one embodiment of the cutting tool of the present invention. In another example of the cutting tool of the present invention, the blade guard 410 has a first guard sidewall 411a and a second guard sidewall 411b, the first guard sidewall 411a and the second guard sidewall 411b are respectively disposed at both sides of the blade 401 in the extending direction of the rotation axis, the first guard sidewall 411a is mounted with a first shower head 510a, the second guard sidewall 411b is mounted with a second shower head 510b, the first shower head 510a is mounted on the first guard sidewall 411a of the guard through a first cooling shower part 500a, and the second shower head 510b is mounted on the second guard sidewall 411b of the guard through a second cooling shower part 500 b. Both the first cooling shower part 500a and the second cooling shower part 500b are the shower cooling part of the present invention.
In consideration of the connection requirements of the coolant supply line and the branch line, in one example of the cutting tool of the present invention, the adapter 520 of the first cooling spray portion 500a is provided with two pipe joints 524, a first pipe joint 524a and a header pipe joint 525, wherein the header pipe joint 525 is connected with the coolant supply header line 530, the first pipe joint 524a is connected with one end of the branch line 550, and the other end of the branch line 550 is connected with the second pipe joint 524b of the second cooling spray portion 500 b.
To facilitate maintenance, in one example of the cutting tool of the present invention, the branch pipe 550 is a hose pipe, the edge of the blade guard 410 is provided with a stopper hole 5231, one end of the branch pipe 550 is mounted on the coupler 524 of the first cooling shower portion 500a, and the other end thereof passes through the stopper hole 5231 and is mounted on the coupler 524 of the second cooling shower portion 500 b. The shunt pipe 550 outside the spacing hole 5231 is exposed externally, when the shunt pipe 550 needs to be removed, only one end of the shunt pipe 550 needs to be pulled out, and then the shunt pipe is taken out from the spacing hole 5231, so that the shunt pipe can be detached, when the shunt pipe 550 is replaced, the shunt pipe 550 penetrates into the spacing hole 5231, and then the two ends of the shunt pipe are respectively connected with the corresponding pipe joints 524 in the first cooling spray part 500a and the second cooling spray part 500b, so that the operation is simple and rapid, and no professional is needed.
The position limiting hole 5231 of the present invention may be formed at any edge position on the blade guard 410 as long as it does not affect cutting, and in an example of the cutting tool of the present invention, the position limiting hole 5231 is formed on the mounting seat of the adjustment handle 413 of the blade guard 410 for convenience of processing. In an example of the cutting tool of the present invention, the adjustment handle 413 includes a first handle 4710 and a second handle 4720 respectively mounted on two sides of the adjustment handle mounting seat 523, through holes are respectively disposed on the first handle 4710 and the second handle 4720 corresponding to the position of the limiting hole 5231, one end of the diversion pipeline 550 is connected to the pipe joint 524 of the first cooling spray part 500a, and the other end of the diversion pipeline sequentially passes through the through hole on the first handle 4710, the limiting hole 5231 on the adjustment handle mounting seat 523, and the through hole on the second handle 4720 and then is connected to the pipe joint 524 of the second cooling spray part 500 b.
For ease of servicing and handling, in one example of the cutting tool of the present invention, the first cooling spray 500a is located on the side of the blade guard 410 facing away from the blade 401 drive system, and a coolant supply manifold 530 is routed along the housing 100 of the cutting tool to the side of the blade guard 410 facing away from the blade 401 drive system and connected to one of the couplings of the first cooling spray 500 a.
In an example of the cutting tool of the present invention, a cooling fluid supply main pipe installation groove 110 is provided on a housing 100 of the cutting tool, and a cooling fluid supply main pipe 530 is installed in the cooling fluid supply main pipe installation groove 110. This arrangement can effectively protect the coolant supply main pipe 530 and can beautify the appearance.
The cooling liquid supply main pipe 530 can be installed in the cooling liquid supply main pipe installation groove 110 in various ways, such as bonding, banding and the like, in an example of the cutting tool of the invention, at least one first blocking piece 111 is installed on one side of the opening of the installation groove, at least one second blocking piece 112 is installed on the other side of the opening of the installation groove, and the first blocking piece 111 and the second blocking piece 112 are distributed in a staggered way and both cantilever-extend towards the opposite side of the opening. The coolant supply manifold 530 is clamped in the coolant supply manifold mounting groove 110 by the first and second blocking pieces 111 and 112 at both sides of the opening of the coolant supply manifold mounting groove 110.
Referring to fig. 21, fig. 21 is a schematic view illustrating a pipe clamp according to an embodiment of the cutting tool of the present invention. In order to prevent the coolant supply main pipe 530 from shaking on the side of the blade guard 410 and to limit the shaking, in an example of the cutting tool of the present invention, a pipe clamp 540 is installed on the blade guard 410, a pipe passing hole 5411 is formed on the pipe clamp 540, and the coolant supply main pipe 530 is connected to the pipe joint 524 through the pipe passing hole 5411. The mounting of the tube clamp 540 to the blade guard 410 is not limited in the present invention and may be any suitable fixing means, and in an example of the cutting tool of the present invention, a threaded hole is formed in the blade guard 410, a long hole 5412 is formed in the tube clamp 540, and a fixing bolt is inserted through the long hole 5412 and coupled to the threaded hole, thereby tightly fixing the tube clamp 540 to the blade guard 410.
In an example of the cutting tool of the present invention, a valve 560 is disposed on the coolant supply main pipe 530, a quick-change connector 570 is disposed at an end of the coolant supply main pipe 530 facing away from the shower head 510, and the quick-change connector 570 is fixedly mounted on the housing 100 of the cutting tool, so that the coolant supply main pipe can be conveniently connected to an external coolant supply pipe. It should be noted that when the cooling liquid is water, the cutting tool of the present invention may be connected to a water supply port of a tap water supply pipe or other water supply device through the quick change coupler 570, and the tap water supply pipe or other water supply device is an external structure, which is not a necessary structure of the present invention, and will not be described in detail herein.
Referring to fig. 22 to 29, fig. 22 is a three-dimensional schematic view of a cutting tool according to an embodiment of the present invention. Fig. 23 is an enlarged view of a portion of the area IV in fig. 22. Fig. 24 shows a schematic view of the guard adjustment mechanism 700 after the cutting tool blade 401 drive system is removed in an embodiment of the cutting tool of the present invention. Fig. 25 is an exploded view of a cutting tool shield adjustment mechanism 700 in accordance with an embodiment of the cutting tool of the present invention. Fig. 26 shows a schematic view of the installation of the dust damper 5600, the guard adjustment mechanism 700 on the blade drive system housing 600. Fig. 27 is an enlarged view of a portion of the VI region in fig. 26.
Fig. 28 is a schematic view of the structure of the guard adjustment mechanism 700 and the adjustment track groove 420 according to an embodiment of the cutting tool of the present invention.
Fig. 29 shows an exploded view of the mounting structure of the blade guard 410 to the blade transmission housing 600 in one embodiment of the cutting tool of the present invention. In view of the convenience of adjusting the blade guard of the cutting tool, in an example of the cutting tool of the present invention, the cutting tool further includes a guard adjusting mechanism 700, which has a small adjusting resistance and a large limiting force, so as to improve the inconvenience of adjusting the blade guard 410 of the existing cutting tool.
Referring to fig. 22 to 23, the cutting tool guard adjusting mechanism 700 of the present invention includes: a blade guard 410, a guard adjustment mechanism 700, and an adjustment track slot 420. The blade guard 410 is partially covered outside the blade 401, and the cutting portion 400 of the blade 401 is exposed outside the blade guard 410, the blade guard 410 is rotatably mounted on the housing 100 on both sides of the blade 401, and the rotatable angle range covers the set adjustment angle range of the blade guard 410 and can rotate at least within the set adjustment angle range. Referring to fig. 29, in one example of the cutting tool of the present invention, the blade guard 410 is mounted coaxially outside the blade 401 and is press-fit to the blade drive train housing 600, which is rotatable about the axis of rotation of the blade 401 without further snagging. Referring to fig. 24, the guard adjustment mechanism 700 is mounted on the cutting tool housing 100 on one side of the blade guard 410, and the guard adjustment mechanism 700 is provided with a slider 710, and the slider 710 can reciprocate along the first linear extending direction under the action of external force. The adjustment rail groove 420 is provided on an outer wall of the blade guard 410 at one side of the slider 710 and, toward the slider 710, an arc-shaped rail groove 4210 and a plurality of stopper grooves 4220 are provided in the adjustment rail groove 420. The arcuate track groove 4210 is coaxial with the axis of rotation of the blade guard 410. The plurality of stopper grooves 4220 are provided at one side of the arc-shaped rail groove 4210 and communicate with the arc-shaped rail groove 4210. Each of the stopper grooves 4220 extends in a linear direction. When the rotation of each limit groove 4220 reaches the position of the sliding block 710, the corresponding extension straight line coincides with the first straight line. The slider 710 is inserted into the adjustment rail groove and reciprocates between the stopper groove 4220 or the arc rail groove 4210 in the process of reciprocating along the first straight line.
Referring to fig. 24 to 27, the installation manner of the sliding block 710 in the present invention is not limited as long as the sliding block 710 can move along a straight line and reciprocate between the arc-shaped rail groove 4210 and the limiting groove 4220 at a certain position, in an example of the cutting tool of the present invention, the guard adjusting mechanism 700 is installed inside the cutting tool blade transmission system housing 600, in view of the convenience of operation and the limitation of the installation position, the guard adjusting mechanism 700 includes a sliding installation seat, the sliding installation seat is provided with a first installation hole 721, the sliding block 710 is installed in the first installation hole 721, the cutting tool housing 100 is provided with a rail through hole, the extending direction of the rail through hole is parallel to the first straight line, the sliding installation seat is inserted into the rail through hole, the portion of the sliding installation seat exposed outside the cutting tool housing 100 is provided with a third installation hole 723, the first screw 760 passes through the third installation hole 723 and is connected with the operation portion 730, and translating the operation part 730, wherein the operation part 730 drives the sliding installation seat to linearly move along the extension direction of the track through hole. This configuration allows the operation unit 730 to be exposed to the outside of the housing 100 and to be operated with one hand. In order to facilitate the hooking of the finger, in an example of the cutting tool of the present invention, the operating portion 730 is provided with a finger groove 731 for facilitating the hooking of the finger, which is advantageous for the stability of the operation. To facilitate removal and installation, in one example of the cutting tool of the present invention, the operating portion 730 is removably mounted to the slide mount by a first screw 760.
Referring to fig. 24, in order to ensure the stability of the slider 710 in the position-limiting groove 4220 in consideration of the large vibration of the cutting tool during operation, in an example of the cutting tool of the present invention, a slider anti-slip device 740 is disposed in the guard adjustment mechanism 700, and the slider anti-slip device 740 is used to stably and reliably stop the slider 710 in the position-limiting groove 4220, but not move along the position-limiting groove 4220 to the arc-shaped track groove 4210 side in the case of vibration, so as to prevent the slider 710 from shifting in the case of vibration. The slide-block retaining device 740 of the present invention may be any suitable structure for preventing the slide block 710 from moving in a translation manner, such as a positioning pin that can be inserted into the slide block 710 or any structure that can apply a certain pressure to the slide block 710 to press the slide block 710 onto a wall of the side of the limiting groove 4220 away from the arc-shaped track groove 4210.
Referring to fig. 28, in an example of the cutting tool of the present invention, the sliding block retaining device 740 includes an elastic pulling body, and the sliding block 710 is pressed against a side of the limiting groove 4220 away from the arc-shaped track groove 4210 under the pulling force of the elastic pulling body. One end of the elastic pulling body is fixed in the cutting tool housing 100 on the side away from the arc-shaped track groove 4210, and the other end of the elastic pulling body extends towards one side of the arc-shaped track groove 4210 and pulls the sliding block 710 or an auxiliary structure integrated with the sliding block 710, so that a force opposite to the opening direction of the limiting groove 4220 is applied to the sliding block 710. The elastic pulling body of the present invention may be any structure that can be contracted and contracted to generate a pulling force, in an example of the cutting tool of the present invention, the elastic pulling body is a tension spring, the blade transmission system housing 600 is provided with a first pin 770, one end of the tension spring is hooked on the first pin 770, the guide body 750 is provided with an annular groove 752 for facilitating hooking of the tension spring, the other end of the tension spring is hooked in the annular groove 752, and the extension and retraction direction of the tension spring is parallel to the first straight line.
In consideration of the variety of the slider retaining device 740, in another example of the present invention, the slider retaining device 740 includes an elastic pressing body, and the slider 710 is pressed against a side of the limiting groove 4220 facing away from the arc-shaped track groove 4210 by the pressing force of the elastic pressing body. One end of the elastic pressing body is fixed in the cutting tool housing 100 close to one side of the arc-shaped track groove 4210, and the other end of the elastic pressing body extends towards one side of the limiting groove 4220 and is pressed against the sliding block 710 or an auxiliary structure of the sliding block 710, so that a force opposite to the opening direction of the limiting groove 4220 is applied to the sliding block 710. The elastic pressing body of the present invention may be any structure that can be contracted and generate a pulling force, and in an example of the cutting tool of the present invention, the elastic pressing body is a pressure spring.
It should be noted that the slide retaining device 740 having the tension spring and the compression spring may be implemented separately, so that the slide 710 can stably abut against the inside of the limiting groove 4220, and in some cutting tools with relatively large vibration or relatively harsh working environment, the two devices may be disposed on one cutting tool at the same time, and cooperate with each other to act on the slide 710 at the same time.
Referring to fig. 26 and 27, considering that the conventional cutting tool has an open structure on the side of the blade transmission system casing 600 facing the blade guard 410, in an example of the cutting tool of the present invention, the guard adjusting mechanism 700 is installed inside the cutting tool blade transmission system casing 600, and a dust-proof baffle 5600 is further installed on the side of the housing 100 facing the cutting guard. The dust guard 5600 is detachably mounted on the side of the cutting tool blade drive train housing 600 facing the blade guard 410 by means of a connecting bolt. Dust guard 5600 can reduce the ingress of dust and water vapor, reducing corrosion and contamination of the drive train.
Referring to fig. 24, in an example of the cutting tool of the present invention, the dust-proof baffle 5600 is provided with an elongated guide through hole 610, an extending direction of the elongated guide through hole 610 is parallel to the first linear direction, the slider 710 is a cylinder, and is provided with a first stopping body 711, the first stopping body 711 is a first collar clamped in a groove of the cylinder, an end of the slider 710 passes through the guide through hole 610 and extends into the adjusting track groove 420, and the first collar stops outside an opening of the guide through hole 610. In consideration of the stability of the slider 710 during the movement, in an example of the cutting tool of the present invention, the sliding mount is further provided with a second mounting hole 722, the guide body 750 is mounted in the second mounting hole 722, the guide section of the guide body 750 has a size matched with that of the guide through hole 610, the guide body 750 is provided with a second stop body 751, the second stop body 751 is a second collar clamped on the guide body 750, the guide section is inserted into the guide through hole 610, and the second collar stops outside the opening of the guide through hole 610.
In the invention, the relative positions of the arc-shaped track groove 4210 and the limiting groove 4220 are not limited, and the arc-shaped track groove 4210 is coaxial with the rotating shaft of the blade shield 410, so that the sliding block 710 can be always positioned in the arc-shaped track groove 4210 in the process of adjusting the blade shield 410, and a plurality of limiting grooves 4220 can be arranged on one side departing from the center of the rotating shaft and can also be arranged on one side of the arc-shaped track groove 4210 facing the center of the rotating shaft, please refer to fig. 28.
Referring to fig. 28, in the present invention, a structure of a side of the limiting groove 4220 away from the arc-shaped rail groove 4210 is not limited, and may be any suitable closed shape, in an example of the cutting tool of the present invention, a closed arc segment is disposed on a side of the limiting grooves 4220 away from the arc-shaped rail groove 4210, and two sides of the closed arc segment are in smooth transition with two side walls of the limiting groove 4220, so as to prevent the sliding block 710 from being blocked in the adjusting process.
In order to meet the requirement of adjustment, the number of the limiting grooves 4220 in the invention is at least two, in an example of the cutting tool of the invention, five limiting grooves 4220 are communicated with the arc-shaped track groove 4210, and the five limiting grooves 4220 are distributed and arranged in a set adjustment angle range. In an example of the cutting tool of the present invention, an included angle between centers of adjacent closed circular arc segments and a connecting line of the axis of the rotating shaft is 10 to 15 °. The included angle can meet the requirement of certain accuracy in adjustment, and the adjustment efficiency cannot be influenced due to too small angle.
Referring to fig. 28, in order to make the slider 710 move smoothly in the arc-shaped track groove 4210 and the limiting groove 4220, in an example of the cutting tool of the present invention, the slider 710 is a circular pin 1324, a portion of the slider 710 inserted into the adjusting track groove 420 is a cylinder, the cylinder and the circular pin 1324 are coaxially disposed, a width of the limiting groove 4220 is slightly larger than a diameter of the cylinder, and a rounded corner is disposed between two sidewalls of each limiting groove 4220 and a sidewall of the arc-shaped track groove 4210, and the rounded corner can guide the slider 710 to enter a next limiting groove 4220 smoothly. The cylinder extending into the adjustment track groove 420 may be a fixed non-rotatable structure, and during the adjustment process, the cylinder and the two side walls of the limit groove 4220 are in sliding friction, but in consideration of wear and adjustment resistance, in an example of the cutting tool of the present invention, the cylinder is rotatably mounted on the round pin 1324. Rotating along the axis of the round pin shaft 1324 during adjustment.
In summary, the cutting tool of the invention seals and installs the battery pack in the battery pack cavity, which not only can effectively prevent the corrosion and pollution of dust and cooling liquid to the battery pack, but also forces the air flow to flow through the gap between the battery cells in the battery pack through the corresponding communication relation between the air inlet and the air outlet on the battery pack cavity and the heat dissipation holes on the battery pack, thereby changing the self diffusion type heating of the battery pack into the circulating type air suction cooling, and improving the heat dissipation state of the battery pack. The cooling method of the battery pack of the cutting tool changes the passive diffusion type heat dissipation of the battery pack into the active circulation type heat dissipation of the battery pack, thereby greatly improving the heat dissipation effect of the battery pack. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.
The invention is not limited to the embodiments shown and described above, the following clauses setting forth various aspects of the inventive subject matter:
1. the utility model provides a cutting tool, includes shell, cutting part, drive division and power supply portion, and the drive division provides power for the cutting part, and power supply portion supplies power for the drive division, and its characterized in that, power supply portion includes:
the battery pack is arranged in a battery pack cavity of the cutting tool, and a first heat dissipation part and a second heat dissipation part are arranged on the battery pack;
the air inlet is arranged on the shell and communicated with the first heat dissipation part;
the air outlet is arranged on the wall body of the battery pack cavity and communicated with the second heat dissipation part;
and the air draft device is arranged in the shell, the air draft opening is communicated with the air outlet, and the air flow sucked is discharged out of the shell.
2. The cutting tool of clause 1, wherein the air inlet is disposed at the bottom of the battery pack cavity.
3. The cutting tool of clause 1, wherein the air extracting means is a fan mounted on a rotating shaft of a driving motor of the cutting tool.
4. The cutting tool according to clause 1, characterized in that the battery pack chamber is disposed rearward of the cutting tool drive motor and between the first handle and the second handle.
5. The cutting tool of clause 1, wherein the battery pack is removably coupled to the battery pack cavity.
6. The cutting tool according to clause 1, characterized in that the battery pack chamber includes a pack chamber body and a pack chamber cover which is sealingly mounted on an opening of the pack chamber body.
7. The cutting tool according to clause 6, characterized in that a transparent structure for facilitating observation of the state of the battery pack is provided on the pack cavity cover.
8. The cutting tool of clause 6, wherein the interface of the pocket cover and the pocket body is provided with a rubberized structure.
9. The cutting tool according to clause 8, characterized in that the over-molded structure is provided with an anti-slip structure.
10. The cutting tool according to clause 6, characterized in that a snap-fit structure is provided between the pocket cover and the pocket body.
11. The cutting tool according to clause 6, characterized in that the mating surface between the pocket cover and the pocket body is higher than the top of the housing of the cutting tool in a normal operating state.
12. The cutting tool according to clause 6, characterized in that the bag body cover and the bag body are connected at one side by a rotating shaft and at the other side locked by a locking structure.
13. The cutting tool according to clause 12, characterized in that the locking structure comprises a first hooking body, a second hooking body and a bracket, the first hooking body is mounted on the bag cavity cover, a first hook is arranged on the first hooking body, one end of the bracket is rotatably mounted on the bag cavity body, one end of the second hooking body is connected with the other end of the bracket, the end of the second hooking body, which is far away from the bracket, is provided with a second hook, and the second hook is matched with the first hook.
14. The cutting tool according to clause 1, wherein the air outlet is flush with the second heat dissipating hole.
15. The cutting tool according to clause 1, characterized in that a third heat sink portion is further provided on the battery pack, and the air inlet is also communicated with the third heat sink portion.
16. The cutting tool according to clause 15, wherein the first heat sink piece and the third heat sink piece are disposed on a first side wall of the battery pack, a cooling air duct is disposed between the first side wall and a wall body of the cavity of the battery pack, and the cooling air duct is communicated with the air inlet.
17. The cutting tool of clause 15, wherein the second heat sink piece is disposed on a second side wall opposite the first side wall.
18. The cutting tool of clause 16, wherein a locating engagement is provided between the second sidewall and the sidewall of the battery pack cavity.
19. The cutting tool of clause 16, characterized in that the electrical terminal of the battery pack is disposed on the second side wall.
20. The cutting tool according to clause 16, characterized in that the second side wall is provided on a side facing the cutting tool drive motor.
21. The cutting tool of clause 1, wherein the air inlet is provided with a filter structure.
22. The cutting tool according to clause 1, characterized in that a spray cooling part is installed on the cutting part, the spray cooling part including: the outer part of a blade of the cutting part is provided with a blade shield, and the side wall of the blade shield is provided with a connecting through hole; a connecting rod is arranged on the spray head, a pressing block is arranged at one end of the connecting rod, and a spray opening is formed in the other end of the connecting rod; the adapter is provided with at least one pipe joint, a through liquid storage cavity is arranged inside the adapter, and a flow passage opening of the at least one pipe joint is communicated with the liquid storage cavity; the connecting rod has the one end that sprays the mouth and passes the liquid storage chamber and be connected with connect the via hole, and the compact heap is sealed the shutoff on the one end opening in liquid storage chamber, and the lateral wall is sealed the shutoff on the other end opening in liquid storage chamber, sprays the mouth and is linked together with the liquid storage chamber.
23. The cutting tool of clause 22, wherein a first end face seal arrangement is provided between the compression block and the adapter.
24. The cutting tool of clause 22, wherein the first end face seal structure comprises an adapter seal face disposed on the adapter and a first seal face disposed on the compression block, and at least one seal body disposed between the adapter seal face and the first compression block seal face.
25. The cutting tool according to clause 24, characterized in that the side of the holding-down piece facing the connecting rod is provided with a first projection, the first sealing surface being provided on an end face of the first projection.
26. The cutting tool of clause 24, wherein the compact is provided with a dust lip.
27. The cutting tool of clause 24, wherein the first sealing surface and/or the adapter sealing surface is provided with a groove, the sealing body being mounted in the groove.
28. The cutting tool of clause 22, wherein a second face seal arrangement is provided between the side wall and the adapter.
29. The cutting tool of clause 28, wherein the second end face seal structure includes an adapter seal surface disposed on the adapter and a second seal surface disposed on the side wall, and at least one seal compressed between the adapter seal surface and the second seal surface.
30. The cutting tool of clause 29, wherein the sidewall is provided with a second boss and the second sealing surface is provided on an end face of the second boss.
31. A cutting tool according to clause 29, characterized in that the second sealing surface and/or the adapter sealing surface is provided with a recess in which the sealing body is mounted.
32. A cutting tool according to clause 24 or 29, wherein the adapter sealing surface is recessed within the fluid reservoir of the adapter.
33. A cutting tool according to claim 24 or claim 29, wherein the adaptor is of plastics material and the sealing body is at least one raised formation provided on a sealing surface of the adaptor, the raised formation surrounding the exterior of the opening to the reservoir.
34. The cutting tool of clause 24 or 29, wherein the sealing body is an O-ring.
35. The cutting tool of clause 22, wherein the outer wall of the connecting rod and the inner wall of the reservoir chamber have a gap therebetween, the gap surrounding the outer wall of the connecting rod.
36. The cutting tool of clause 35, wherein the reservoir and the connecting rod are cylindrical and coaxially disposed.
37. The cutting tool according to clause 22, characterized in that the pipe joint is provided with a projection projecting in the radial direction in the circumferential direction.
38. The cutting tool of clause 37, wherein the male portion has a guide taper thereon, a small end of the guide taper facing away from the reservoir.
39. The cutting tool of clause 22, wherein a locating feature is disposed between the sidewall and the adapter.
40. The cutting tool of clause 39, wherein the shroud on one side of the cutting tool blade has a first spray cooling portion mounted thereon and the shroud on the other side of the blade has a second spray cooling portion mounted thereon.
41. The cutting tool according to clause 22, characterized in that the adapter of the first spray cooling section is provided with two pipe connections, one of which is connected to the coolant supply main pipe, the other of which is connected to one end of the branch pipe, and the other end of the branch pipe is connected to the pipe connection of the second spray cooling section.
42. The cutting tool of clause 41, wherein the edge of the blade guard is provided with a stop hole through which the diverter tube passes.
43. The cutting tool of clause 42, wherein the limit hole is disposed on the adjustment handle mount of the blade guard.
44. The cutting tool according to clause 41, characterized in that the first spray cooling is located on the side of the blade guard facing away from the blade transmission system, and the coolant supply manifold runs along the housing of the cutting tool to the side of the blade guard facing away from the blade transmission system and is connected to the pipe connection.
45. The cutting tool according to clause 41, characterized in that a coolant supply main pipe installation groove is provided on the housing, and the coolant supply main pipe is installed in the coolant supply main pipe installation groove.
46. The cutting tool of clause 45, wherein at least one first stop piece is mounted to one side of the opening of the mounting slot, at least one second stop piece is mounted to the other side of the opening of the mounting slot, and the first stop piece and the second stop piece are distributed in a staggered manner and both extend out of the cantilever towards the opposite side of the opening.
47. The cutting tool of clause 41, wherein the blade guard has a tube clamp mounted thereon, the tube clamp having a tube passage hole, and the coolant supply main tube is connected to the tube connector through the tube passage hole.
48. The cutting tool of clause 47, wherein the blade guard has a threaded bore and the tube clamp has a slot through which the securing bolt passes to connect with the threaded bore.
49. The cutting tool according to clause 1, characterized in that a guard adjusting portion is mounted on the cutting portion, the guard adjusting portion including: a shield adjusting mechanism and an adjusting track groove; a blade shield is rotatably arranged outside the blade of the cutting part; the protective cover adjusting mechanism is arranged on the cutting tool shell, a sliding block is arranged on the protective cover adjusting mechanism, and the sliding block moves in a reciprocating mode along a first linear extending direction; the adjusting track groove is arranged on the outer wall of the blade shield, and an arc-shaped track groove and a plurality of limiting grooves are arranged in the adjusting track groove; the arc-shaped track groove is coaxial with the rotating shaft of the blade shield; the plurality of limiting grooves are arranged on one side of the arc-shaped track groove and are communicated with the arc-shaped track groove; the sliding block is inserted into the adjusting track groove and reciprocates between the limiting groove or the arc track groove in the process of reciprocating along the first straight line.
50. The cutting tool of clause 49, wherein a slide block retaining device is disposed within the guard adjustment mechanism.
51. The cutting tool according to clause 50, characterized in that the slider retaining means comprises an elastic pulling body, and the slider is pressed against one side of the limiting groove away from the arc-shaped rail groove under the pulling force of the elastic pulling body.
52. The cutting tool of clause 51, characterized in that the resilient pulling body is a tension spring.
53. The cutting tool according to clause 50, characterized in that the slider retaining means comprises an elastic pressing body, and the slider is pressed against one side of the limiting groove departing from the arc-shaped rail groove under the pressure action of the elastic pressing body
54. The cutting tool of clause 53, characterized in that the resilient pressing body is a pressure spring.
55. The cutting tool of clause 49, wherein the guard adjustment mechanism comprises a slide mount, the slider is mounted on the slide mount, the cutting tool housing has a rail through hole, the rail through hole extends in a direction parallel to the first line, and the slide mount is inserted into the rail through hole and moves linearly in the direction of extension of the rail through hole.
56. The cutting tool according to clause 55, characterized in that a portion of the slide mount exposed to the outside of the cutting tool housing is provided with an operating portion.
57. The cutting tool of clause 56, wherein the operative portion comprises an arcuate operative surface.
58. The cutting tool of clause 56, wherein the operating portion is removably mounted on the slide mount.
59. The cutting tool according to clause 55, wherein the guard adjustment mechanism is mounted within a housing of the cutting tool blade drive system, the housing further having a dust guard mounted on a side thereof facing the cutting guard.
60. The cutting tool according to clause 59, characterized in that the dust-proof baffle is provided with an elongated guide through-hole, the extending direction of the elongated guide through-hole is parallel to the first linear direction, the slider is provided with a first stopper, the end of the slider penetrates through the guide through-hole and extends into the adjustment rail groove, and the first stopper is stopped outside the opening of the guide through-hole.
61. The cutting tool according to clause 60, characterized in that the slide mount is further provided with a guide body, a guide section of the guide body has a size matched with a size of the guide through hole, the guide body is provided with a second stopper, the guide section is inserted into the guide through hole, and the second stopper is stopped outside an opening of the guide through hole.
62. The cutting tool of clause 61, wherein the guard adjustment mechanism has a spring disposed therein, one end of the spring being mounted to the housing of the blade drive system and the other end of the spring being mounted to the guide body, the extension direction being parallel to the first line.
63. The cutting tool of clause 62, characterized in that the guide body is provided with a groove facilitating hooking of the spring.
64. The cutting tool according to clause 49, characterized in that the arc-shaped rail groove is provided on a side of the stopper groove facing away from the center of the rotary shaft.
65. The cutting tool of clause 49, wherein the side of the plurality of retaining grooves facing away from the arcuate rail groove is provided with a closed arc segment.
66. The cutting tool according to clause 65, characterized in that the arc-shaped track groove is communicated with five limiting grooves, and the five limiting grooves are distributed and arranged within a set adjusting angle range.
67. The cutting tool according to clause 65, wherein an included angle between centers of adjacent closed arc segments and a connecting line of the axes of the rotating shafts is 10 to 15 °.
68. The cutting tool according to clause 49, wherein the portion of the slider inserted into the adjustment track groove is a cylindrical body.
69. The cutting tool of clause 67, wherein the cylinder is rotatably mounted on the slide.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (30)

1. The utility model provides a cutting tool, includes shell, cutting part, drive division and power supply portion, the drive division does the cutting part provides power, the power supply portion is the drive division power supply, its characterized in that, the power supply portion includes:
the battery pack is arranged in a battery pack cavity of the cutting tool, and a first heat dissipation part and a second heat dissipation part are arranged on the battery pack;
the air inlet is arranged on the shell and communicated with the first heat dissipation part;
the air outlet is arranged on the wall body of the battery pack cavity and communicated with the second heat dissipation part;
the air draft device is arranged in the shell, the air draft opening is communicated with the air outlet, and the air draft device discharges the air flow after being sucked out of the shell;
wherein, the air inlet is arranged at the bottom of the battery pack cavity.
2. The cutting tool of claim 1, wherein the battery pack cavity comprises a pack cavity body and a pack cavity cover sealingly mounted over an opening of the pack cavity body.
3. The cutting tool of claim 2, wherein the pack cavity cover is provided with a transparent structure to facilitate viewing of the battery pack status.
4. The cutting tool of claim 2, wherein an encapsulated structure is disposed on an interface of the capsule cover and the capsule body, wherein an anti-slip structure is disposed on the encapsulated structure.
5. The cutting tool of claim 2, wherein the mating surface between the pocket cover and the pocket body is higher than a top of the housing of the cutting tool in a normal operating state.
6. The cutting tool of claim 2, wherein the cover and the cavity are connected by a shaft on one side and a locking structure on the other side.
7. The cutting tool of claim 6, wherein the locking structure comprises a first hook, a second hook and a support, the first hook is mounted on the bag cover and provided with a first hook, one end of the support is rotatably mounted on the bag cover, one end of the second hook is connected with the other end of the support, one end of the second hook facing away from the support is provided with a second hook, and the second hook is matched with the first hook.
8. The cutting tool of claim 1, wherein the air outlet is flush with the second heat dissipating aperture.
9. The cutting tool according to claim 1, wherein a third heat dissipating portion is further disposed on the battery pack, the air inlet is also communicated with the third heat dissipating portion, the first heat dissipating portion and the third heat dissipating portion are disposed on a first side wall of the battery pack, a cooling air duct is disposed between the first side wall and a wall body of the cavity of the battery pack, and the cooling air duct is communicated with the air inlet.
10. The cutting tool of claim 9, wherein the second heat sink portion is disposed on a second sidewall opposite the first sidewall.
11. The cutting tool of claim 1, wherein a spray cooling portion is mounted on the cutting portion, the spray cooling portion comprising: the outer part of a blade of the cutting part is provided with a blade shield, and the side wall of the blade shield is provided with a connecting through hole; the spray head is provided with a connecting rod, one end of the connecting rod is provided with a pressing block, and the other end of the connecting rod is provided with a spray opening; the adapter is provided with at least one pipe joint, a through liquid storage cavity is arranged inside the adapter, and a flow passage opening of the at least one pipe joint is communicated with the liquid storage cavity; the connecting rod has the one end that sprays the mouth and passes the stock solution chamber with connect the through-hole is connected, compact heap sealed shutoff is in on the one end opening in stock solution chamber, the lateral wall sealed shutoff is in on the other end opening in stock solution chamber, spray the mouth with the stock solution chamber is linked together.
12. The cutting tool of claim 11, wherein a first face seal arrangement is disposed between the clamp block and the adapter, wherein the first face seal arrangement includes an adapter seal face disposed on the adapter and a first seal face disposed on the clamp block, and at least one seal body disposed between the adapter seal face and the first clamp block seal face.
13. The cutting tool of claim 12, wherein a side of the compression block facing the connecting rod is provided with a first boss, the first sealing surface being provided on an end face of the first boss.
14. The cutting tool of claim 12, wherein the first sealing surface and/or the adapter sealing surface is provided with a groove, the sealing body being mounted in the groove.
15. The cutting tool of claim 11, wherein a second end face seal structure is disposed between the side wall and the adapter, wherein the second end face seal structure includes an adapter seal surface disposed on the adapter and a second seal surface disposed on the side wall, and at least one seal compressed between the adapter seal surface and the second seal surface.
16. The cutting tool of claim 15, wherein the sidewall is provided with a second boss, and the second sealing surface is provided on an end surface of the second boss.
17. The cutting tool of claim 15, wherein the second sealing surface and/or the adapter sealing surface is provided with a groove, the sealing body being mounted in the groove.
18. A cutting tool according to claim 12 or 15, wherein the adaptor sealing surface is recessed within the reservoir of the adaptor.
19. The cutting tool of claim 12 or 15, wherein the adapter is a plastic material and the sealing body is at least one raised structure disposed on a sealing surface of the adapter, the raised structure surrounding an opening in the reservoir.
20. The cutting tool of claim 11, wherein a gap is provided between an outer wall of the coupling rod and an inner wall of the reservoir chamber, the gap surrounding along the outer wall of the coupling rod, wherein the reservoir chamber and the coupling rod are both cylindrical and are coaxially disposed.
21. The cutting tool of claim 1, wherein a guard adjustment portion is mounted on the cutting portion, the guard adjustment portion comprising: a shield adjusting mechanism and an adjusting track groove; a blade shield is rotatably arranged outside the blade of the cutting part; the protective cover adjusting mechanism is arranged on the shell of the cutting tool, a sliding block is arranged on the protective cover adjusting mechanism, and the sliding block moves in a reciprocating mode along a first linear extending direction; the adjusting track groove is formed in the outer wall of the blade shield, and an arc-shaped track groove and a plurality of limiting grooves are formed in the adjusting track groove; the arc-shaped track groove is coaxial with the rotating shaft of the blade shield; the plurality of limiting grooves are arranged on one side of the arc-shaped track groove and communicated with the arc-shaped track groove; the sliding block is inserted into the adjusting track groove and reciprocates between the limiting groove and the arc-shaped track groove in the process of reciprocating along the first straight line.
22. The cutting tool of claim 21, wherein a slider retaining device is disposed in the guard adjustment mechanism, wherein the slider retaining device comprises an elastic body, and the slider is pressed against a side of the limiting groove away from the arc-shaped track groove under the elastic force of the elastic body.
23. The cutting tool of claim 22, wherein the elastomer is a compression spring or a tension spring.
24. The cutting tool of claim 21, wherein the guard adjustment mechanism comprises a slide mount, the slide block is mounted on the slide mount, the cutting tool housing has a rail through hole extending in a direction parallel to the first line, and the slide mount is inserted into the rail through hole and moves linearly along the rail through hole.
25. The cutting tool of claim 24, wherein the portion of the slide mount exposed outside of the cutting tool housing is provided with an operative portion, wherein the operative portion comprises an arcuate operative surface.
26. The cutting tool of claim 24, wherein the guard adjustment mechanism is mounted within a housing of the cutting tool blade drive system, the housing further having a dust guard mounted to a side thereof facing the cutting guard.
27. The cutting tool according to claim 26, wherein the dust guard has a guide through hole extending in a direction parallel to the first linear direction, and the slider has a first stopper, an end of the slider extends into the adjustment rail groove through the guide through hole, and the first stopper is stopped outside an opening of the guide through hole.
28. The cutting tool of claim 27, wherein the sliding mount further comprises a guide body, a guide section of the guide body has a size matched with that of the guide through hole, the guide body is provided with a second stop body, the guide section is inserted into the guide through hole, and the second stop body stops outside the opening of the guide through hole.
29. The cutting tool of claim 28, wherein a spring is disposed within the guard adjustment mechanism, one end of the spring is mounted to the housing of the blade drive system, the other end of the spring is mounted to the guide body, and the extension direction is parallel to the first line.
30. The cutting tool according to claim 21, wherein a closed arc segment is disposed on a side of each of the plurality of limiting grooves facing away from the arc-shaped track groove, and an included angle between a circle center of each adjacent closed arc segment and a connecting line of the axis of the rotating shaft is 10-15 °.
CN202110270624.5A 2021-03-12 2021-03-12 Cutting tool Active CN113000928B (en)

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CN202110270624.5A CN113000928B (en) 2021-03-12 2021-03-12 Cutting tool
EP22766352.3A EP4304799A1 (en) 2021-03-12 2022-03-10 Power tool and cutting tool
PCT/CN2022/080102 WO2022188830A1 (en) 2021-03-12 2022-03-10 Power tool and cutting tool
US18/446,470 US20230381875A1 (en) 2021-03-12 2023-08-08 Power tool and cutting tool

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WO2022188830A1 (en) * 2021-03-12 2022-09-15 Globe (jiangsu) Co., Ltd. Power tool and cutting tool

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