CN108848872A - Insulation system and grass trimmer - Google Patents

Abstract

The present invention relates to a kind of insulation systems, are used for electric garden tool, and the electric garden tool includes：Shell；Motor is set to the shell, is used to provide power；The motor includes output shaft；Blade is connected to the output shaft, and the motor drives the blade rotary work by the output shaft；The insulation system is set between the output shaft and the blade, to realize that the insulation of the blade and the output shaft is coupled；Wherein, the insulation system includes a connecting seat, the attachment base includes a main part being made of insulating material, and the main part is equipped at least two blade attachment portions with the output shaft interconnecting piece of output shaft fastening mating and with blade fastening mating；Mutually insulated is isolated between the output shaft interconnecting piece and any one of blade attachment portion.The invention further relates to a kind of grass trimmers including the insulation system.The present invention can be realized the double insulation of low cost.

Description

Insulation system and grass trimmer

Technical field

The present invention relates to electric garden tool technical fields.More particularly to a kind of insulation system and with the insulation system Grass trimmer.

Background technique

Power-operated mower is a kind of tool most commonly seen in garden instrument.In general, in order to guarantee peace that grass trimmer uses Quan Xing, high-voltage alternating or direct current grass trimmer must satisfy the requirement of double insulation.Double insulation generally comprises basic insulation and attached Add insulation.Wherein, basic insulation is the basic protection insulation that electric shock is prevented to live part offer, such as in power-operated mower The basic insulation of motor itself.Superinsulation is in order to prevent from getting an electric shock when basic insulation damages or fails, and in basic insulation Except setting again independent insulation, such as the insulation between the blade and motor output shaft of grass trimmer.In the prior art, greatly Most grass trimmers are still difficult to realize dual exhausted due to the limitation of cost and design space between motor, output shaft and blade assembly Edge, causes that there are security risks.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of insulation systems that can be realized double insulation.

In order to solve the above technical problems, a kind of insulation system of the invention, is used for electric garden tool, the electric garden tool Including：Shell；Motor is set to the shell, is used to provide power；The motor includes output shaft；Blade, with the output Axis connection, and the motor drives the blade rotary work by the output shaft；The insulation system is set to described defeated Between shaft and the blade, to realize that the insulation of the blade and the output shaft is coupled；Wherein, the insulation system includes A connecting seat, the attachment base include a main part being made of insulating material, and the main part is equipped with tight with the output shaft Admittedly the output shaft interconnecting piece being coupled and at least two blade attachment portions with blade fastening mating；The output shaft connects Mutually insulated is isolated between socket part and any one of blade attachment portion.

Preferably, the output shaft is fixedly connected by the second fastener portion of being connected to the output shaft；The blade is logical At least two first fasteners are crossed to be fixedly connected with the blade attachment portion.

Preferably, the insulation system further includes the insulating cover being made of insulating material, and the insulating cover is arranged described Between second fastener and the blade, to realize the insulation between second fastener and the blade.

Preferably, the output shaft is coupled from the first side portion of being connected to the output shaft of the attachment base, and described second Fastener is coupled after passing through the attachment base to first side direction from the second side of attachment base with the output shaft；It is described exhausted Edge lid forms an inner cavity；Second fastener protrudes from the main part towards described second side towards second side direction Face be partially housed in the inner cavity, blade is isolated from the outside of the inner cavity.

Preferably, the insulating cover and second fastener are detachably connected.

Preferably, the insulating cover has at least one elastic clamping hook, and the main part includes at least one card slot, described Elastic clamping hook is removably cooperatively connected with the card slot.

Preferably, the insulating cover is unremovably connect with second fastener.

Preferably, the insulating cover has non-standard end face.

Preferably, the output shaft is coupled from the first side portion of being connected to the output shaft of the attachment base, the blade It is coupled from second side of the attachment base and the blade attachment portion.

Preferably, the output shaft interconnecting piece includes from the main part towards first side towards described second side The axis hole that direction extends, the axis hole and the output shaft are cooperatively connected.

Preferably, the output shaft connection part structure is to include from the main part towards first side towards described First cavity of the second side direction extension and the connector for being fixedly embedded first cavity；The connector include from Its axis hole extended towards second side direction towards first side.

Preferably, first through hole is equipped with below the axis hole；The output shaft includes the end from it towards described second side The second matching hole extended towards first side direction；The first through hole is corresponding with second matching hole；At least portion It is cooperatively connected after dividing second fastener to pass through the first through hole with second matching hole.

Preferably, the connector is metal material, the connector and the main part integrated injection molding；The company Fitting includes the extension for having embedded division and extending from the embedded division to first side direction, the outer diameter of the embedded division Greater than the outer diameter of the extension；First cavity includes chamber portion and opening portion, the internal diameter in the chamber portion with it is described embedding The outer diameter for entering portion matches, and the internal diameter of the opening portion and the outer diameter of the extension match.

Preferably, the blade attachment portion includes from the main part towards described second side towards first side To multiple first matching holes of extension, the periphery of the first matching hole inner circumferential and first fastener is equipped with intermeshing Screw thread；The blade includes the second through-hole corresponding with first matching hole；At least partly described first fastener passes through institute It is cooperatively connected after stating the second through-hole with first matching hole.

Preferably, in multiple first matching holes, at least there is the rotation of two first matching holes and main part Turn in the no longer same straight line of line between center.

Preferably, the periphery of the main part is equipped with peripheral wall, and the periphery of first matching hole is equipped with hole wall；In the week Wall is equipped with ribs, circumferentially extending of the ribs along the main part close to the side of the rotation center of the main part； The ribs is divided into multistage by multiple first matching holes, and the extension line at any one section of ribs to both ends is logical Cross first matching hole.

Preferably, any one section of ribs passes through to the extension line at both ends in the geometry of first matching hole The heart.

Preferably, the blade attachment portion is configured to include from the main part towards described second side towards described The first matching hole that one side direction extends, the second cavity for being arranged in first matching hole and it is fixedly embedded described Nut in second cavity；The nut is metal material, and has the screw thread engaged with first fastener；The nut With the main part integrated injection molding.

The present invention also provides a kind of grass trimmers, including insulation system described in above-mentioned any one.

What the present invention can reach has the technical effect that the double insulation for realizing low cost, after the basic insulation failure of motor still not It will cause electric shock accidents.

Detailed description of the invention

Fig. 1 is the grass trimmer schematic diagram of the embodiment of the invention.

Fig. 2 is the partial enlarged view of L1 in Fig. 1.

Fig. 3 is facing for motor in the grass trimmer of the embodiment of the invention, attachment base, blade and its connection relationship Figure.

Fig. 4 is looking up for motor in the grass trimmer of the embodiment of the invention, attachment base, blade and its connection relationship Figure.

Fig. 5 be in Fig. 4 along the sectional view of A-A.

Fig. 6 is the schematic diagram of attachment base in the grass trimmer of the embodiment of the invention, and wherein upper surface is demonstrated.

Fig. 7 is the schematic diagram at another visual angle of attachment base in the grass trimmer of the embodiment of the invention, wherein following table Face is demonstrated.

Fig. 8 is the schematic diagram of rotor in the grass trimmer of the embodiment of the invention.

Fig. 9 is the schematic diagram of insulating cover in the grass trimmer of the embodiment of the invention.

Wherein, 1- grass trimmer, the chassis 11-, 12- motor cover, 13- battery chamber containment, 131- battery pack, 14- blade, 15- are pushed away Bar, 16- traveling wheel, 17- grass cutting collection box, 2- motor, 21- lower cover, 22- output shaft, 23- rotor, the second matching hole of 221-, 3- connect Joint chair, 301- first through hole, the second through-hole of 302-, 303- third through-hole, 31- main part, 3101- peripheral wall, 3102- ribs, 3103- chamber wall, 311- card slot, the protrusion 3111-, 32- nut, the first matching hole of 321-, 3211- hole wall, 33- connector, 331- axis hole, 332- embedded division, 333- extension, 36- insulating cover, 361- cover, 3610- flange, the inner cavity 3611-, 362- arm Portion, 363- elastic clamping hook, 37- fitting groove, the first fastener of 4-, the second fastener of 5-.

Specific embodiment

Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally Transformation is included within the scope of protection of the present invention.

It should be noted that it can directly on the other element when element is referred to as " fixation " in another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term " vertical " "horizontal" "upper" "lower" used herein " left side " " right side " " preceding " " rear " and similar statement are for illustrative purposes only.Unless otherwise defined, institute used herein Some technical and scientific terms are identical as the normally understood meaning of person skilled in the art of the present invention is belonged to.Herein at this The term used in the description of invention, which is only for the purpose of describing specific embodiments, is not intended to limit the present invention. Term as used herein "and/or" includes any and all combinations of one or more related listed items.

Embodiment 1.

Fig. 1 to Fig. 9 shows a specific embodiment of insulation system and grass trimmer of the present invention.

A specific embodiment of the invention discloses a kind of grass trimmer 1, connects with reference to Fig. 1, including shell and rear shell Push rod 15, the traveling wheel 16 for being set to outer casing bottom, the collection grass that is detachably connected with rear shell for connecing and extending rearwardly and upwardly Case 17 is set to the motor 2 for being used for the battery cavities of set battery packet 131 in shell and being set in shell, and battery pack 131 is Motor 2 is powered.In other embodiments, grass trimmer is equipped with the power supply line that can connect with urban distribution network, from urban distribution network to motor Power supply.Motor 2 includes rotor 23 and the output shaft 22 with the synchronous rotation of rotor 23.One end of output shaft 22 is connected with blade 14 It connects, motor 2 drives the rotation of blade 14 to realize cutting operation by output shaft 22.In general, output shaft 22 and blade 14 are metal Material.Specifically, shell includes chassis 11 arranged at the bottom, and motor 2 is fixed on 11 top of chassis and substantially hangs down with chassis 11 Directly, output shaft 22 is passed down through chassis 11 and connect with blade 14.In the present embodiment, the lower cover 21 of motor 2 and chassis 11 are tight It is solidly connected, lower cover 21 is insulating materials here.Battery cavities are disposed relative to the forward position of motor 2.Shell further includes setting The battery chamber containment 13 setting the motor cover 12 above motor and being arranged in above battery cavities.

In the present embodiment, with reference to Fig. 2 ~ Fig. 9, insulation system is equipped between output shaft 22 and blade 14, to realize blade Insulation mating between 14 and output shaft 22.The insulation system includes a connecting seat 3, states for aspect, is base with attachment base 3 Standard, relative to attachment base 3 towards 2 direction of motor, correspondingly away from 14 direction of blade（With reference to the direction of arrow U in Fig. 3）One Side is defined as the first side, in Fig. 1 ~ Fig. 9 and grass trimmer in actual work, the first side be upside.Relative to attachment base 3 Towards 14 direction of blade, correspondingly deviate from 2 direction of motor（With reference to the direction of arrow D in Fig. 3）Side be defined as second side, In Fig. 1 ~ Fig. 9 and grass trimmer in actual work, second side is downside.Hereinafter, all unless making outside certain illustrated Refer to that " upper surface " refers both to the face towards the first side, " lower surface " refers both to the face towards second side, " top " " upward " " upward " In "upper" refer both to the first side, the "lower" in " lower section " " downward " " downward " refers both to second side.In the attachment base 3 towards the first side Face be equipped with an output shaft interconnecting piece, output shaft 22 is fixedly connected by output shaft interconnecting piece with attachment base 3.In 3 court of attachment base It is equipped at least one blade attachment portion to the face of second side, blade 14 is fixedly connected by blade attachment portion with attachment base 3.Output Be not directly contacted between axis connection portion and any one blade attachment portion and by insulating materials interval, ensure that blade with it is defeated Superinsulation between shaft, that is to say, that when the failure of the basic insulation of motor 2 itself, insulation system can guarantee blade It is not charged.

With reference to Fig. 2, Fig. 5 ~ Fig. 7, attachment base 3 includes a generally circular main part 31, and the main part 31 is by insulation material Material is made.The upper surface of main part 31 and the position close to its rotation center is arranged in output shaft interconnecting piece, and output shaft 22 is from master The top in body portion 31 is fixedly connected by 5 portion of being connected with exporting axis of the second fastener, and the rotation center and main body of output shaft 22 The rotation center in portion 31 is overlapped.Specifically, output shaft interconnecting piece includes the axis hole 331 extended downwardly from 31 upper surface of main part, The cross sectional shape of axis hole 331, the cross sectional shape of size and output shaft 22, size match.Preferably, axis hole 331 and output shaft Interference connection can be achieved between 22.Further, with reference to Fig. 6 and Fig. 8, the cross sectional shape of axis hole 331 and the section of output shaft 22 It is shaped to non-rotational symmetry, can limit after axis hole 331 is assembled with output shaft 22 will not relatively rotate.In this implementation Example in, axis hole 331 it is opening up, axis hole 331 extends downwardly and does not penetrate through the upper and lower surface of main part 31.In axis hole 331 Bottom is equipped with first through hole 301, is equipped with the second matching hole 221, first through hole 301 and the second mating in the lower end surface of output shaft 22 Hole 221 is corresponding.Second fastener 5 is the screw of metal material, and screw includes head of screw and shank of screw, and the diameter of head of screw Greater than the internal diameter of first through hole 301, the diameter of shank of screw is not more than the internal diameter of first through hole 301.Shank of screw is equipped with screw thread, the The screw thread with screw mates is equipped in two matching holes 221.When being fixedly connected with output shaft 22 and when main part 31, shank of screw is from main body Be upward through below portion 31 after first through hole 301 with being threadedly engaged in the second matching hole 221, head of screw is pressed on main part 31 Lower surface, realize being fixedly connected between output shaft 22 and main part 31.

In the present embodiment, it is preferred that refer to Fig. 2, Fig. 5 ~ Fig. 7, in order to enhance output shaft interconnecting piece and output shaft 22 it Between bonding strength, output shaft connection part structure be include from 31 upper surface of main part and the first cavity for extending downwardly and It is fixedly embedded the connector 33 of first cavity.Connector 33 is the molding metal material of powder metallurgically manufacturing, fixedly It is embedded in the first cavity of main part 31.Connector 33 includes the embedded division 332 of lower portion and upwardly extends from embedded division 332 Extension 333, wherein the outer diameter of embedded division 332 is greater than the outer diameter of extension 333.Connector 33 includes from its upper surface（It is i.e. embedding Enter the upper surface in portion 332）The axis hole 331 extended downwardly.Axis hole 331 run through or not through connector 33 upper and lower surface.Work as axis Hole 331 not through when, be equipped with the through-hole that passes through for shank of screw in the bottom surface of axis hole 331.Correspondingly, main part 31 includes from thereon Surface and the first cavity extended downwardly, first cavity have the opening portion of relatively close 31 upper surface of main part and lean on relatively The chamber portion of nearly 31 lower surface of main part, wherein the outer radial of the internal diameter with extension 333 of opening portion matches, the internal diameter in chamber portion Match with the outer diameter of embedded division 332, the periphery in chamber portion, which is equipped with, has certain thickness chamber wall 3103.At the bottom in chamber portion Face is equipped with first through hole 301.In the present embodiment, connector 33 and 31 integrated injection molding of main part, and in the first cavity Equipped with rib and/or slot radially（It is not shown）, correspondingly connected part 33 is equipped with to match with the first cavity internal-rib and/or slot Slot/rib of conjunction（It is not shown）, ensure that will not all occur opposite transport on radial and axial between connector 33 and main part 31 It is dynamic.Certainly in other embodiments, also high strength nonmetallic material can be selected in connector 33 or other meet the material of bonding strength Material.

31 lower surface of main part and the position close to its edge is arranged in blade attachment portion, and blade 14 is from main part 31 Lower section is fixedly connected by the first fastener 4 with blade attachment portion.Specifically, blade attachment portion includes from 31 following table of main part Multiple first matching holes 321 extended upwardly.In multiple first matching holes 321, at least there are two the first matching holes 321, the line between the center of this two the first matching holes 321 and the rotation center of main part 31 is not in same straight line.Such as This setting, limiting user can only install upward the default one side upward of blade 14, can not when blade 14 is reversed It is installed.In the present embodiment, the first matching hole 321 is set as two, is asymmetricly located at the rotation center of main part 31 Two sides.Correspondingly, the second through-hole 302 corresponding with 231 position of the first matching hole is equipped on blade 14.First fastener 4 For the bolt of metal material, bolt includes bolt head and shank of bolt, and the diameter of bolt head is greater than the diameter of the second through-hole 302, The diameter of shank of bolt is not more than the diameter of the second through-hole 302.Shank of bolt is equipped with screw thread, is equipped in the first matching hole 231 and spiral shell The matched screw thread of bolt.When being fixedly connected with blade 14 and main part 31, shank of bolt is upward through the second through-hole below blade 14 With being threadedly engaged in the first matching hole 231 after 302, bolt head abuts against the lower surface of blade 14, realizes blade 14 and main body Being fixedly connected between portion 31.In the present embodiment, blade 14 further includes third through-hole 303, and third through-hole 303 is positioned close to The position of the rotation center of blade 14 is simultaneously corresponding with first through hole 301, passes through for the second fastener 5.In other embodiments, Two fasteners 5 are fully located at the top of blade 14, and blade 14 need not open up third through-hole 303 at this time.

In this embodiment, it is preferred that the first matching hole 321 is through the upper surface of main part 31 under with reference to Fig. 2, Fig. 6 Surface.The periphery of first matching hole 321, which is equipped with, has certain thickness hole wall 3211, and hole wall 3211 is projected upwards in main part 31 Upper surface.The periphery of main part 31, which is equipped with, has certain thickness peripheral wall 3101, and peripheral wall 3101 is generally circular.Hole wall 3211 Be overlapped far from the side of 31 rotation center of main part with peripheral wall 3101, hole wall 3211 close to 31 rotation center of main part side and Chamber wall 3103 is overlapped.The ribs 3102 circumferentially extended along main part 31 is equipped between peripheral wall 3101 and chamber wall 3103. Specifically, ribs 3102 is divided into N sections by N number of first matching hole 321, and wherein N is positive integer not less than 1, and any one section Ribs 3102 passes through the first matching hole 321 adjacent thereto to the extension line at both ends.Further, any one section of ribs 3102 pass through the geometric center of the first matching hole 321 to the extension line at both ends.Above-mentioned reinforcing rib is set on attachment base 3 3102, the load that blade 14 is born when grass trimmer can work passes through the first fastener 4, via peripheral wall 3101 and reinforcing rib 3102 pass to the hole wall 3211 of the first matching hole 321, then pass to chamber wall 3103, connector 33 and motor by hole wall 3211 Output shaft 22, effectively strengthen the circumferential strength of attachment base 3, prevent the blade 14 of grass trimmer bear compared with big load when lead Connector 3 is caused to be broken.

In the present embodiment, it is preferred that Fig. 2, Fig. 5 ~ Fig. 7 are referred to, for the company between enhancing blade attachment portion and blade 14 Intensity is connect, it includes the first matching hole 321 upwardly extended from 31 lower surface of main part that blade attachment portion, which is configured to, is arranged first The nut 32 of the second cavity and the metal material being fixedly embedded in second cavity in matching hole 321, the nut 32 tool There is the screw thread engaged with the first fastener 4.First matching hole 321 run through or not through main part 31 upper and lower surface.Nut 32 With 31 integrated injection molding of main part.

In the technical solution of above-mentioned the present embodiment, output shaft interconnecting piece is substantially arranged along the rotation center of main part 31, The rotation center two sides of main part 31 are arranged in blade attachment portion so that output shaft interconnecting piece and any one blade attachment portion it Between have an insulating materials isolation, and output shaft 22 is coupled from top and main part 31, and blade 14 is matched with main part 31 from below It connects, realizes the insulation mating between blade and output shaft.

In the technical solution of above-mentioned the present embodiment, the blade 14 of metal material is exposed to the lower section of main part 31, and golden The head of screw for belonging to the second fastener 5 of material is also exposed to the lower section of main part 31, thus there is blade 14 and the second fastening Risk is conducted between part 5.With reference to Fig. 2 ~ Fig. 7, Fig. 9, insulation system further includes an insulating cover 36 being made of insulating material, The insulating cover 36 provides the insulation between blade 14 and the second fastener 5.Specifically, insulating cover 36 includes having in the closing of bottom The outer diameter of the cover 361 of chamber 3611, cover 361 is adapted with the internal diameter of third through-hole 303, and the outer diameter of usual cover 361 is equal to Or it is slightly less than the internal diameter of third through-hole 303, so that cover 361 can pass through third through-hole 303.The internal diameter of cover 361（That is inner cavity 3611 diameter）It is adapted with the outer diameter of the head of screw of the second fastener 5, the internal diameter of usual cover 361 is greater than the second fastener 5 Head of screw outer diameter, so that head of screw can be housed among inner cavity 3611.Referring to figs. 2 and 9, the open end of cover 361 With outwardly extending flange 3610, flange 3610 is clipped between 14 upper surface of blade and the lower surface of main part 31.

Insulating cover 36 and the second setting independently of each other of fastener 5, and removably connect with main part 31.Insulating cover 36 is also Including at least one the first mounting portion, correspondingly, main part 31 includes at least one second peace compatible with the first mounting portion Dress portion.In the present embodiment, the first mounting portion includes along the symmetrically outwardly extending arm 362 of flange 3610, and from arm The elastic clamping hook 363 that 362 outer end upwardly extends.Second mounting portion includes the assembly that the indent of 31 lower surface of main part is arranged in Slot 37, the shape of fitting groove 37 and the shape of 36 open end of insulating cover match, and especially flange 3610 is clipped in 14 upper surface of blade Between fitting groove 37.Fitting groove 37 further includes card slot 311 corresponding with elastic clamping hook 363, card slot in quantity and position Protrusion 3111 is equipped in 311, elastic clamping hook 363 and protrusion 3111 are clamped, and are realized using the elastic deformation of elastic clamping hook 363 itself The connection of insulating cover 36 and main part 31.In the present embodiment, the connecting line and two the first matching holes between two card slots 311 Connecting line between 321 is generally perpendicular to each other.In other embodiments, the quantity of the first mounting portion and the second mounting portion does not limit At two, can be adjusted according to actual needs.In other embodiments, the assembly shape of the first mounting portion and the second mounting portion Formula is not limited to the structure using hook and card slot yet, can also using such as thread matching structure, other are removable according to actual needs Structure is unloaded, specifically, as the setting of the periphery of the head of screw using the inner wall and the second fastener in inner cavity 3611 is mutually matched The forms such as screw thread, as long as meeting being detachably connected between insulating cover 36 and main part 31 simultaneously and being dielectrically separated from blade 14 With the second fastener 5.

When installing grass trimmer, output shaft 22 is inserted into the axis hole 311 of attachment base 3；By the shank of screw of the second fastener 5 from The lower section of attachment base 3 is inserted into the second matching hole after being upward through first through hole 301 and is screwed, make output shaft 22 and attachment base 3 it Between fasten mating；Second mounting portion of the first mounting portion of insulating cover 36 and main part 31 is coupled, the cover of insulating cover 36 is made 361 cover the head of screw of the second fastener 5；It is second through-hole 302 is corresponding with the first matching hole 321 and make the lid of insulating cover 36 Portion 361 passes through third through-hole 303, is fastenedly connected blade 14 and attachment base 3 using the first fastener 4, completes the installation of grass trimmer. At this point, being kept apart between blade 14 and the second fastener 5 by insulating cover 36 is insulated, blade 14 and output shaft not only ensure that Effective insulation between 22, and General purpose screw can be used, the versatility of part is improved, is reduced costs.Meanwhile it insulating Lid 36 is moulding, and simple production process is low in cost, is easily installed and replaces.

In the present embodiment, it is preferred that the rotation of the rotation center of output shaft 22, the rotation center of main part 31, axis hole 331 It is logical to turn center, the rotation center of the second fastener 5, the rotation center of screw hole 221, the rotation center of first through hole 301, third The rotation center in hole 303 is overlapped.

Embodiment 2.

The present embodiment is substantially the same manner as Example 1, for brevity, only describes the area with embodiment 1 in the present embodiment Not.

Insulating cover 36 is wholely set with the second fastener 5.Specifically, insulating cover 36 is coated on by integrated injection molding The head of screw of second fastener 5.Compared with Example 1, the present embodiment can cancel the first mounting portion and the second mounting portion.

Further, the second fastener 5 is the screw with non-standard head of screw, and correspondingly, the cover of insulating cover 36 has There is off-gauge cross sectional shape.That is, not being available general utility tool（Such as common wrench, normal screws knife）It is tight to second Firmware 5 is dismounted, and must use the tool of specific shape that could dismount to the second fastener 5.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality The all possible combination of each technical characteristic in example is applied all to be described.However, as long as the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book With the other embodiments of understanding.

The series of detailed descriptions listed above only for feasible embodiment of the invention specifically Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention Or change should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of insulation system, is used for electric garden tool, the electric garden tool includes：Shell；Motor（2）, setting In the shell, it is used to provide power；The motor（2）Including output shaft（22）；Blade（14）, with the output shaft（22） Connection, and the motor（2）Pass through the output shaft（22）Drive the blade（14）Rotary work；It is characterized in that described exhausted Edge structure setting is in the output shaft（22）With the blade（14）Between, to realize the insulation of the blade Yu the output shaft Mating；Wherein, the insulation system includes a connecting seat（3）, the attachment base（3）The main body being made of insulating material including one Portion（31）, the main part（31）Equipped with the output shaft（22）Fasten mating output shaft interconnecting piece and with the knife Piece（14）Fasten at least two blade attachment portions of mating；The output shaft interconnecting piece and any one of blade attachment portion it Between mutually insulated be isolated.

2. insulation system according to claim 1, characterized in that the output shaft（22）Pass through the second fastener（5）With The output shaft interconnecting piece is fixedly connected；The blade（14）Pass through at least two first fasteners（4）It is connect with the blade Portion is fixedly connected.

3. insulation system according to claim 2, characterized in that the insulation system further includes being made of insulating material Insulating cover（36）, the insulating cover（36）It is arranged in second fastener（5）With the blade（14）Between, described in realizing Second fastener（5）With the blade（14）Between insulation.

4. insulation system according to claim 3, characterized in that the output shaft（22）From the attachment base（3）? The mating of the side portion of being connected to the output shaft, second fastener（5）From attachment base（3）The second side to first side To across the attachment base（3）Afterwards with the output shaft（22）Mating；The insulating cover（36）Form an inner cavity（3611）；It is described Second fastener（5）The main part is protruded from towards second side direction（31）It is received towards the part in the face of described second side It is dissolved in the inner cavity（3611）, blade（14）It is isolated from the inner cavity（3611）Outside.

5. insulation system according to claim 4, characterized in that the insulating cover（36）With second fastener（5） It is detachably connected.

6. insulation system according to claim 5, characterized in that the insulating cover（36）With at least one elastic clamping hook （363）, the main part（31）Including at least one card slot（311）, the elastic clamping hook（363）With the card slot（311）It can Releasably it is cooperatively connected.

7. insulation system according to claim 4, characterized in that the insulating cover（36）With second fastener（5） Unremovably connect.

8. according to insulation system described in claim 5 ~ 7 any one, characterized in that the insulating cover（36）With non-standard End face.

9. insulation system according to claim 2, characterized in that the output shaft（22）From the attachment base（3）? The mating of the side portion of being connected to the output shaft, the blade（14）From the attachment base（3）Second side connect with the blade Portion's mating.

10. a kind of grass trimmer, characterized in that including the insulation system as described in claim 1 ~ 9 any one.