CN208051622U - A kind of hand held electric tool - Google Patents
A kind of hand held electric tool Download PDFInfo
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- CN208051622U CN208051622U CN201820314925.7U CN201820314925U CN208051622U CN 208051622 U CN208051622 U CN 208051622U CN 201820314925 U CN201820314925 U CN 201820314925U CN 208051622 U CN208051622 U CN 208051622U
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- shell
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- hand
- electric tool
- helicla flute
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Abstract
The utility model provides a kind of hand held electric tool,Including hand-held part,Assist hand-held part,Rotor and output shaft,It includes shell to assist hand-held part,Output shaft is located in shell,The one end of shell far from hand-held part is equipped with through-hole,One end of output shaft is connect with rotor,The other end stretches out in shell by through-hole,Shell is equipped with air intake duct,One end that output shaft stretches out in shell is equipped with helicla flute,Helicla flute is located in through-hole and is connected to the inside and outside of shell,In output shaft high-speed rotation unidirectional with rotor,Air in helicla flute is released to hull outside,So that the air pressure in helicla flute reduces,The air of hull outside from air intake duct enters enclosure interior because of draught head,Air is set constantly to enter enclosure interior from air intake duct,Realize the flowing of air in shell,Make shell rapid cooling,Operator is not necessarily to cover collet on shell in operation or wears muffler,So that hand held electric tool is more convenient to use,Safety.
Description
Technical field
The utility model is related to power tools technology field more particularly to a kind of hand held electric tools.
Background technology
When operating the hand held electric tools such as straight grinder, operator holds hand-held part by proficiency, and the other hand holds auxiliary
Hand-held part is helped, can more steadily be operated, assists hand-held part due to the effect of shell inner bearing etc., heat can be radiated, be passed
It leads on shell, generates higher temperature;Especially when operator holds with a hand the shell work of auxiliary hand-held part, on shell
Heat be not easy to radiate outward from holding place, operator need to often be covered on shell a thicker gum cover come it is heat-insulated, or operation
It is heat-insulated that person wears thicker gloves, in this way, shell heat dissipation is obstructed, the temperature in shell further increases, and influences operator's use,
Influence the service life of machine inner bearing.
Invention content
The purpose of this utility model is to provide a kind of hand held electric tools easy to use, safe.
In order to achieve the above object, the utility model adopts the following technical solution:A kind of hand held electric tool, including hand
Portion, auxiliary hand-held part, rotor and output shaft are held, auxiliary hand-held part includes shell, and output shaft is located in shell, and shell is far from hand-held
The one end in portion is equipped with through-hole, and one end of output shaft connect with rotor, and the other end stretches out in shell by through-hole, shell equipped with into
Wind groove, one end that output shaft stretches out in shell are equipped with helicla flute, and helicla flute is located in through-hole and is connected to the inside and outside of shell.
Further, it is equipped with wind guiding rack in the shell, forms loop vent chamber, loop vent between wind guiding rack and shell
The both ends of chamber are communicated with air intake duct, helicla flute respectively.
Further, the outer wall of the wind guiding rack is equipped with spiral bar for dividing loop vent chamber, spiral bar it is upper
End face is matched with the inner wall of shell.
Further, the spiral bar is extended along the axial screw of wind guiding rack, and spiral bar is equipped with a plurality of.
Further, the output shaft is equipped with first bearing close to one end of rotor, and output shaft is set close to one end of through-hole
There are second bearing, the inner wall of shell to cross wind groove and second equipped with first and cross wind groove, first crosses wind groove and first bearing cooperation shape
Wind chamber is crossed at first, and first crosses wind chamber connection air intake duct and loop vent chamber, and second, which crosses wind groove and second bearing, cooperatively forms the
Two cross wind chamber, and second crosses the annular vented cavity of wind chamber connection and helicla flute.
Further, V-arrangement washer is equipped in the shell and at air intake duct, V-arrangement washer, first bearing and shell are matched
Conjunction forms first annular accommodating chamber, and first annular accommodating chamber is communicated with air intake duct.
Further, the second bearing cooperatively forms the second annular accommodating chamber close to one end of through-hole and shell, and second
Annular accommodating chamber is communicated with helicla flute.
Further, the shell includes handling section and the linkage section that is connect with hand-held part, linkage section flare and from
Gradually increase to one end diameter far from handling section close to one end of handling section, linkage section is equipped with the wind-guiding communicated with air intake duct
Slot.
Further, the air intake duct is equipped with multiple, and multiple air intake ducts are arranged along the uniformly distributed interval of circumferential direction of shell.
Further, the helicla flute is extended along the axial screw of output shaft, and helicla flute is equipped with a plurality of.
After adopting the above technical scheme, the utility model has the following advantages that:
1, helicla flute is set by stretching out in one end of shell in output shaft, helicla flute is located in through-hole and is connected to shell
Internal and external, in output shaft high-speed rotation unidirectional with rotor, the air in helicla flute is released to hull outside so that spiral shell
Air pressure in spin slot reduces;By the way that air intake duct is arranged, with the reduction of air pressure in helicla flute, the air of hull outside is because of draught head
Enter enclosure interior from air intake duct, so that air is constantly entered enclosure interior from air intake duct, then be discharged from helicla flute, realize in shell
The flowing of air makes shell rapid cooling, solves shell and is heated, hand grabs boiling hot problem, and operator is not necessarily in operation
Collet is covered on shell, or wears muffler so that more convenient to use, the safety of hand held electric tool;Simultaneously also without
The diameter that shell need to be increased makes operator hold more comfortable.
2, by the way that wind guiding rack is arranged so that form loop vent chamber, the both ends of loop vent chamber between wind guiding rack and shell
It is communicated respectively with air intake duct, helicla flute so that then external air moves after being entered by air intake duct along loop vent chamber
Into in helicla flute, wind is finally released into enclosure interior by helicla flute, because the sectional area of loop vent chamber is smaller, makes the stream of air
It is dynamic to accelerate, and air is flowed all along the inner wall of shell, ensures the validity that air is contacted with shell, promotes the heat dissipation effect of shell
Fruit is further ensured that the reliability that hand held electric tool uses.
3, by the way that spiral bar is arranged on the outer wall of leading truck, the upper surface of spiral bar matches with the inner wall of shell, makes
It obtains spiral bar to divide loop vent chamber so that the flowing of wind is relatively uniform, avoids local temperature excessively high, to realize to shell
Homogeneouslly-radiating, cooling, avoid scald operator so that the use of hand held electric tool is more safe and reliable.
4, spiral bar extends along the axial screw of wind guiding rack, extends the path of air flowing, and promotion dissipates shell
Thermal effect is realized the further segmentation of loop vent chamber, loop vent chamber is divided into multiple by the way that a plurality of spiral bar is arranged
Part so that the flowing of wind is more uniform, to allow shell heat dissipation and cooling it is more uniform, be further ensured that hand electric
The safety and reliability that tool uses.
5, it first wind groove and first bearing are crossed cooperatively forms first and crosses wind chamber, the second mistake wind groove and second bearing and cooperatively form
Second crosses wind chamber, and first crosses wind chamber connection air intake duct and loop vent chamber, and second, which crosses wind chamber connection annular, crosses wind chamber and helicla flute,
The first wind chamber, loop vent chamber, second excessively is passed sequentially through after so that air is entered enclosure interior from air intake duct crosses wind chamber, helicla flute again
It is pushed out, air can radiate to first bearing when first crosses near wind chamber, can be right when second crosses near wind chamber
Second bearing radiates, and then reduces bearing and be transmitted to the heat on shell, is further ensured that hand held electric tool uses
Safety and reliability, meanwhile, increase the service life of bearing.
6, by the way that V-arrangement washer is arranged at air intake duct, V-arrangement washer, first bearing and shell cooperatively form first annular appearance
Receive chamber, first annular accommodating chamber is communicated with air intake duct, and air enters first annular accommodating chamber by air intake duct, and air is in the first ring
It describes and receives intracavitary flowing, the heat dissipation of first bearing can be accelerated, and then reduce first bearing and be transmitted to the heat on shell, into one
Step ensures the safety and reliability that hand held electric tool uses, meanwhile, increase the service life of first bearing;V simultaneously
Shape washer can prevent dust from entering the cavity where shell internal rotor so that the use of hand held electric tool is relatively reliable.
7, second bearing cooperatively forms the second annular accommodating chamber close to one end of through-hole and shell so that air can be the
Flowing in second ring accommodating chamber can accelerate the heat dissipation of second bearing, and then reduce second bearing and be transmitted to the heat on shell,
It is further ensured that the safety and reliability that hand held electric tool uses, meanwhile, the service life of second bearing is increased, the
Second ring accommodating chamber is communicated with helicla flute so that air in the second annular accommodating chamber can be well into helicla flute and being pushed away
Go out.
8, by the way that flue is arranged in linkage section, Zi one end diameter close to one end of handling section to separate handling section by
It is cumulative big so that the diameter of handling section part can be smaller, and the person of being conveniently operated holds so that the use of hand held electric tool is more
Add conveniently;By the way that wind guide tank is arranged in linkage section, wind guide tank communicated by air intake duct with the inside of shell, when being cased on handling section
When soft rubber cover, air can be entered by the wind guide tank for being arranged in linkage section in air intake duct, and heat dissipation effect is not interfered with.
9, by the way that multiple air intake ducts are arranged, increase while entering the air capacity of enclosure interior, to promote the heat dissipation of shell
Efficiency, multiple air intake ducts are arranged along the uniformly distributed interval of circumferential direction of shell so that shell all directions are entered the wind simultaneously, and are entered the wind more
Uniformly so that the heat dissipation of shell is more uniform, avoids local temperature excessively high.
10, helicla flute extends spirally setting along the axis of output shaft so that and air is discharged along helicla flute to outside shell,
By the way that a plurality of helicla flute is arranged, a plurality of helicla flute forms multi end form, is equivalent to multiple fan blades so that air can be from multiple spiral shells
Spin slot is pushed out simultaneously, increases the radiating efficiency of hand held electric tool.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is the structural schematic diagram of hand held electric tool described in the utility model embodiment one.
Fig. 2 is the phantom of hand held electric tool described in the utility model embodiment one.
Fig. 3 is the part explosive view of hand held electric tool described in the utility model embodiment one.
Fig. 4 is the structural schematic diagram of wind guiding rack in hand held electric tool described in the utility model embodiment two.
Fig. 5 is the phantom of hand held electric tool described in the utility model embodiment two.
Marked the names of the parts are as follows in figure:
1, hand-held part;2, hand-held part is assisted;21, shell;211, through-hole;212, air intake duct;213, handling section;214, it connects
Section;2141, wind guide tank;215, limiting slot;2151, shaft block ring;22, output shaft;221, helicla flute;222, collet;23, wind-guiding
Frame;231, spiral bar;24, first bearing;25, second bearing;26, first wind chamber is crossed;27, second wind chamber is crossed;28, V-arrangement washer;
29, dust washer;30, circlip;3, rotor;4, shaft coupling;5, loop vent chamber;6, first annular accommodating chamber;7, second
Annular accommodating chamber;8, seal chamber.
Specific implementation mode
Embodiment one:
As shown in Figures 1 to 3, the utility model provides a kind of hand held electric tool, including hand-held part 1, auxiliary hand-held part
2, rotor 3 and output shaft 22, operator hold hand-held part 1 by proficiency, and the other hand holds auxiliary hand-held part 2, can be more steady
Surely hand held electric tool is operated, auxiliary hand-held part 2 includes shell 21, and output shaft 22 is located in shell 21, and shell 21 is separate
One end of hand-held part 1 is equipped with through-hole 211, and one end of output shaft 22 is connect with rotor 3, and the other end stretches out in shell by through-hole 211
Body 21, one end that output shaft 22 stretches out in shell 21 are equipped with helicla flute 221, and helicla flute 221 is located in through-hole 211 and connection shell
21 inside and outside, when output shaft 22 is with 3 unidirectional high-speed rotation of rotor, the air in helicla flute 221 is to outside shell 21
It releases in portion so that the air pressure in helicla flute 221 reduces, and shell 21 is equipped with air intake duct 212, with air pressure in helicla flute 221
It reduces, the air outside shell 21 makes air constantly from air intake duct 212 because draught head is inside the entrance shell 21 of air intake duct 212
It is discharged into enclosure interior, then from helicla flute 221, realizes the flowing of air in shell, make shell rapid cooling, solve shell
Heated, hand grabs boiling hot problem, and operator is not necessarily to cover collet on shell in operation, or wears muffler so that hand
Hold more convenient to use, the safety of formula electric tool;Simultaneously without the diameter for increasing shell, so that operator is held and more relax
It is suitable.
In the present embodiment, it is equipped with wind guiding rack 23 in shell 21, forms loop vent chamber 5 between wind guiding rack 23 and shell 21,
The both ends of loop vent chamber 5 are communicated with air intake duct 212, helicla flute 221 respectively so that after external air is entered by air intake duct
It is moved subsequently into helicla flute along loop vent chamber, wind is finally released into enclosure interior by helicla flute, realized empty in shell
The flowing of gas, direction shown in arrow is the flow direction of air in Fig. 2 makes air because the sectional area of loop vent chamber is smaller
Flow faster, and air is flowed all along the inner wall of shell, ensures the validity that is contacted with shell of air, promotes the scattered of shell
Thermal effect is further ensured that the reliability that hand held electric tool uses.
Output shaft 22 is equipped with first bearing 24 close to one end of rotor 3, and output shaft 22 is equipped with the close to one end of through-hole 211
Two bearings 25, the inner wall of shell 21 cross wind groove and second equipped with first and cross wind groove, and first crosses wind groove and the cooperation of first bearing 24
It forms first and crosses wind chamber 26, first, which crosses wind chamber 26, is connected to air intake duct 212 and loop vent chamber 5, and second crosses wind groove and second bearing
25, which cooperatively form second, crosses wind chamber 27, and second, which crosses wind chamber 27, is connected to annular vented cavity 5 and helicla flute 221, makes air from air intake duct
First is passed sequentially through behind 212 21 inside of entrance shell crosses wind chamber 26, loop vent chamber 5, second wind chamber 27, helicla flute 221 excessively again
It is pushed out, air can radiate to first bearing 24 when first crosses near wind chamber 26, when second crosses near wind chamber 27
It can radiate to second bearing 25, and then reduce bearing and be transmitted to the heat on shell 21, be further ensured that hand-held electricity
The safety and reliability that power driven tools use, meanwhile, increase the service life of bearing.
V-arrangement washer 28 is equipped in shell 21 and at air intake duct 212, V-arrangement washer 28, first bearing 24 and shell 21 are matched
Conjunction forms first annular accommodating chamber 6, and first annular accommodating chamber 6 is communicated with air intake duct 212, and air enters the by air intake duct 212
One annular accommodating chamber 6, air flowing in first annular accommodating chamber 6 can accelerate the heat dissipation of first bearing 24, and then reduce by the
One bearing 24 is transmitted to the heat on shell 21, is further ensured that the safety and reliability that hand held electric tool uses, together
When, increase the service life of first bearing 24;Where V-arrangement washer 28 can prevent dust from entering shell internal rotor 3 simultaneously
Cavity so that the use of electrician tool is relatively reliable.
Second bearing 25 cooperatively forms the second annular accommodating chamber 7 close to one end of through-hole 211 and shell 21 so that air can
With the flowing in the second annular accommodating chamber 7, the heat dissipation of second bearing 25 can be accelerated, and then reduce second bearing 25 and be transmitted to shell
Heat on body 21 is further ensured that the safety and reliability that hand held electric tool uses, meanwhile, increase second bearing
25 service life, the second annular accommodating chamber 7 are communicated with helicla flute 221 so that the air in the second annular accommodating chamber 7 can fill
Divide and enters in helicla flute 221 and be pushed out.
It is equipped with dust washer 29 between second bearing 25 and the second annular accommodating chamber 7, is prevented in the second annular accommodating chamber
Dust enters in second bearing so that the use of second bearing is relatively reliable.
The inner wall of shell 21 is equipped with limiting slot 215, and shaft block ring 2151 is equipped in limiting slot 215, is used by the way that axis is arranged
Baffle ring 2151 matches the position of limitation first bearing 24 with shell 21, and first bearing 24 is made not move, and realizes first bearing
24 positioning so that the use of hand held electric tool is reliable.
Wind guiding rack 23 is equipped with bullet between first bearing 24 and second bearing 25 between wind guiding rack 23 and second bearing 25
Property baffle ring 30, the outer surface of circlip 30 and the inner wall of shell 21 match so that air will not flow to wind guiding rack 23
Inside, i.e. first bearing 24, second bearing 25, circlip 30 and wind guiding rack 23 have cooperatively formed seal chamber 8, and dust will not be into
Enter in seal chamber 8, protects bearing;And it ensure that air can only flow in loop vent chamber 5, ensured faster wind
Speed improves the effect of cooling shell 21.
First, which crosses wind groove and second, crosses wind groove and is equipped with multiple, forms multiple first and crosses wind chamber 26 and second and crosses wind chamber 27,
Allow air to cross wind chamber 26 from multiple first while entering loop vent chamber 5, then crosses wind chamber 27 simultaneously from multiple second
It goes out, increases the amount of flow of air, to increase the radiating efficiency of shell.In the present embodiment, first crosses wind groove and the second mistake
Wind groove is both provided with 4, and wind chamber is crossed in formation 4 first and 4 second are crossed wind chamber, and air crosses wind chamber simultaneously from 4 first simultaneously
It into loop vent chamber, then crosses wind chamber from 4 second and enters helicla flute simultaneously so that the amount of flow bigger of air increases heat dissipation
Efficiency.
4 first are crossed wind groove and the 4 second uniformly distributed interval settings of circumferential direction for crossing wind groove each along inner walls so that air
All more uniformly into loop vent chamber 5 and outflow loop vent chamber 5 so that the heat dissipation and cooling of shell 21 are all more uniform,
Will not local temperature it is excessively high so that the use of hand held electric tool is more safe and reliable.
Shell 21 includes handling section 213 and the linkage section 214 that is connect with hand-held part 1,214 flare of linkage section and is leaned on certainly
One end of nearly handling section 213 gradually increases to one end diameter far from handling section 213 so that the diameter of 213 part of handling section can
With smaller, the person of being conveniently operated hold so that hand held electric tool it is more convenient to use;Linkage section 214 is equipped with and air intake duct
212 wind guide tanks 2141 communicated, wind guide tank 2141 are communicated with the inside of shell 21 by air intake duct 212, are covered when on handling section 213
When having soft rubber cover, air can not be interfered with scattered by being arranged in the entrance air intake duct 212 of wind guide tank 2141 of linkage section 214
Thermal effect.
Specifically, output shaft 22 and 211 clearance fit of through-hole on shell 21 so that output shaft 22 can easily exist
Rotation in through-hole 211, and can prevent the dust outside shell 21 from entering the inside of shell 21 so that hand held electric tool
Use it is relatively reliable.
Rotor 3 is connect with output shaft 22 by shaft coupling 4, and rotor 3 drives shaft coupling 4 to rotate, and shaft coupling 4 drives output again
Axis 22 rotates.One end that output shaft 22 stretches out in shell 21 is equipped with collet 222, and collet 222 is used for installment work attachment, such as can
To install blade wheel, grinding wheel, polishing wheel etc., to realize the function of grinding, polishing etc..Output shaft 22 stretches out one end of shell 21
Equipped with threaded hole, collet 222 is equipped with external screw thread, and output shaft 22 is connected through a screw thread with collet 222, and screw thread has self-locking performance,
So that output shaft 22 and the connection of collet 222 are reliable, meanwhile, collet 222 easily can be installed and be dismantled, and be made
The use for obtaining electrician tool is more convenient, reliable.
Air intake duct 212 is equipped with multiple, by the way that multiple air intake ducts 212 are arranged, increases the air entered simultaneously inside shell 21
Amount, to promote the radiating efficiency of shell, multiple air intake ducts 212 are arranged along the uniformly distributed interval of circumferential direction of shell 21 so that shell
21 all directions are entered the wind simultaneously, and are entered the wind more uniform so that the heat dissipation of shell is more uniform, avoids local temperature excessively high.This
In embodiment, air intake duct 212 is provided with 4 so that the surrounding of shell 21 can enter the wind simultaneously, promote the heat dissipation effect of shell 21
Fruit.
Helicla flute 221 is extended along the axial screw of output shaft 22 so that air is arranged along helicla flute to outside shell
Go out, helicla flute 221 is equipped with a plurality of, and a plurality of helicla flute forms multi end form, is equivalent to multiple fan blades so that air can be from multiple
Helicla flute 221 is pushed out simultaneously, increases the radiating efficiency of hand held electric tool, a plurality of helicla flute 221 is along output shaft 22
Circumferential uniformly distributed interval setting so that the wind in shell 21 is equably discharged, and flowing is more smooth, and then promotes hand electric
The radiating efficiency of tool.In the present embodiment, helicla flute 221 is provided with 4 so that air in shell 21 is by from 4 helicla flutes
221 are equably discharged, and flowing is more smooth, and then promote the radiating efficiency of hand held electric tool.
It should be understood that circlip can also be arranged between first bearing and wind guiding rack.
It should be understood that the first wind groove excessively can also be provided with 1,2,3,5,6,7 etc..
It should be understood that the second wind groove excessively can also be provided with 1,2,3,5,6,7 etc..
It should be understood that air intake duct can also be provided with 1,2,3,5,6,7,8 etc..
It should be understood that helicla flute can also be provided with 1,2,3,5,6,7,8,9 etc..
Embodiment two:
The present embodiment and the main distinction of embodiment one are that the outer wall of wind guiding rack is equipped with for dividing loop vent chamber
Spiral bar, the upper surface of spiral bar is matched with the inner wall of shell.
As shown in Figures 4 and 5, the outer wall of wind guiding rack 23 is equipped with spiral bar 231, upper surface and the shell 21 of spiral bar 231
Inner wall match.The advantages of this arrangement are as follows spiral bar 231 divides loop vent chamber 5 so that the flowing of wind is more equal
It is even, avoid local temperature excessively high, Homogeneouslly-radiating, cooling to realization to shell 21 avoid scald operator so that hand-held
The use of electric tool is more safe and reliable, meanwhile, it is multiple because spiral bar can distribute air by the way that spiral bar 231 is arranged
Air intake duct 212 only need to may make that air inlet is uniform so that air intake duct position along the circumferentially disposed of shell without the setting of uniformly distributed interval
The setting set is more convenient.
Spiral bar 231 is extended along the axial screw of leading truck 23, extends the path of air flowing, is promoted to shell
The heat dissipation effect of body, spiral bar 231 are equipped with a plurality of, realize the further segmentation of loop vent chamber 5, loop vent chamber 5 is divided
Multiple portions being cut into, a plurality of spiral bar 231 is arranged along the uniformly distributed interval of circumferential direction of leading truck so that the flowing of wind is more uniform,
To allow shell 21 heat dissipation and cooling it is more uniform, be further ensured that safety that hand held electric tool uses and reliable
Property.In the present embodiment, spiral bar 231 is provided with 2, and loop vent chamber 5 is evenly divided into 3 parts, makes the flowing of wind more
Uniformly, to make the cooling of shell 21 more uniform, guarantee will not local shell 21 overheat, make the use of hand held electric tool
It is more safe and reliable.
It should be understood that spiral bar can also be provided with 1,3,4,5,6 etc..
In addition to above preferred embodiment, the utility model also has other embodiments, and those skilled in the art can root
It is made various changes and modifications according to the utility model, without departing from the spirit of the utility model, the utility model should all be belonged to
Range defined in appended claims.
Claims (10)
1. a kind of hand held electric tool, including hand-held part, auxiliary hand-held part, rotor and output shaft, auxiliary hand-held part includes shell
Body, output shaft are located in shell, and the one end of shell far from hand-held part is equipped with through-hole, and one end of output shaft is connect with rotor, another
End stretches out in shell by through-hole, and shell is equipped with air intake duct, which is characterized in that one end that the output shaft stretches out in shell is set
There are helicla flute, helicla flute to be located in through-hole and be connected to the inside and outside of shell.
2. hand held electric tool according to claim 1, which is characterized in that be equipped with wind guiding rack, wind-guiding in the shell
Loop vent chamber is formed between frame and shell, the both ends of loop vent chamber are communicated with air intake duct, helicla flute respectively.
3. hand held electric tool according to claim 2, which is characterized in that the outer wall of the wind guiding rack is equipped with and is used for
Divide the spiral bar of loop vent chamber, the upper surface of spiral bar is matched with the inner wall of shell.
4. hand held electric tool according to claim 3, which is characterized in that the spiral bar along wind guiding rack axial direction
Setting is extended spirally, spiral bar is equipped with a plurality of.
5. hand held electric tool according to claim 2, which is characterized in that the output shaft is set close to one end of rotor
There are first bearing, output shaft to be equipped with second bearing close to one end of through-hole, the inner wall of shell is equipped with first and crosses wind groove and second
Cross wind groove, first, which crosses wind groove, cooperatively forms first with first bearing and cross wind chamber, and first crosses wind chamber connection air intake duct and loop vent
Chamber, second, which crosses wind groove and second bearing, cooperatively forms second and crosses wind chamber, and second crosses the annular vented cavity of wind chamber connection and helicla flute.
6. hand held electric tool according to claim 5, which is characterized in that set in the shell and at air intake duct
There are V-arrangement washer, V-arrangement washer, first bearing and shell to cooperatively form first annular accommodating chamber, first annular accommodating chamber and air intake duct
It communicates.
7. hand held electric tool according to claim 5, which is characterized in that the second bearing is close to one end of through-hole
The second annular accommodating chamber is cooperatively formed with shell, the second annular accommodating chamber is communicated with helicla flute.
8. hand held electric tool according to claim 1, which is characterized in that the shell include handling section and with it is hand-held
The linkage section of portion's connection, linkage section flare and one end diameter Zi close to one end of handling section to far from handling section gradually increase
Greatly, linkage section is equipped with the wind guide tank communicated with air intake duct.
9. according to the hand held electric tool described in claim 1 to 8 any one, which is characterized in that the air intake duct is equipped with
Multiple, multiple air intake ducts are arranged along the uniformly distributed interval of circumferential direction of shell.
10. according to the hand held electric tool described in claim 1 to 8 any one, which is characterized in that the helicla flute along
The axial screw of output shaft is extended, and helicla flute is equipped with a plurality of.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201820314925.7U CN208051622U (en) | 2018-03-07 | 2018-03-07 | A kind of hand held electric tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201820314925.7U CN208051622U (en) | 2018-03-07 | 2018-03-07 | A kind of hand held electric tool |
Publications (1)
Publication Number | Publication Date |
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CN208051622U true CN208051622U (en) | 2018-11-06 |
Family
ID=63992021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201820314925.7U Active CN208051622U (en) | 2018-03-07 | 2018-03-07 | A kind of hand held electric tool |
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CN (1) | CN208051622U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108312018A (en) * | 2018-03-07 | 2018-07-24 | 浙江亚特电器有限公司 | A kind of hand held electric tool |
-
2018
- 2018-03-07 CN CN201820314925.7U patent/CN208051622U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108312018A (en) * | 2018-03-07 | 2018-07-24 | 浙江亚特电器有限公司 | A kind of hand held electric tool |
CN108312018B (en) * | 2018-03-07 | 2023-10-13 | 浙江亚特电器股份有限公司 | Hand-held electric tool |
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