CN110370138A - A kind of air-cooled straight drive electric angle grinder - Google Patents
A kind of air-cooled straight drive electric angle grinder Download PDFInfo
- Publication number
- CN110370138A CN110370138A CN201910705743.1A CN201910705743A CN110370138A CN 110370138 A CN110370138 A CN 110370138A CN 201910705743 A CN201910705743 A CN 201910705743A CN 110370138 A CN110370138 A CN 110370138A
- Authority
- CN
- China
- Prior art keywords
- motor
- angle grinder
- brushless motor
- cover board
- grinding
- 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.)
- Pending
Links
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000009423 ventilation Methods 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of air-cooled straight drive electric angle grinders, including casing and brushless motor, casing includes head and handle portion equipped with grinding, brushless motor is arranged on head, the output shaft of brushless motor is directly with grinding connection for driving grinding rotation, cooling fan is equipped on the main shaft of brushless motor between abrasive disc and motor housing, cooling fan includes centrifuge blade, cover board and guide disc；Cover board is screwed the shell in motor, and guide disc is installed on the outer end of cover board.Since cooling fan is installed on except driving motor by the present invention, and the cooling wind that fan generates is guided to the outer wall of motor by a guide disc, and the grating type exhaust vent by being located on the outer wall of motor flows out, motor is set to be in closed state at work, motor is implemented to cool down using external fan, cooling problem when the direct driving motor work of the angle grinder under air-proof condition is realized, ensure that angle grinder service life.
Description
Technical field
The present invention relates to power tools technology fields, more particularly to a kind of straight drive angle grinder.
Background technique
Electric angle grinder be it is a kind of using high-speed rotating disc wheel and elastic grinding wheel, wire wheel etc. to metal component
It is ground, cut, being derusted, being polished the milling tools of processing.The straight electric angle grinder that drives is a kind of improvement to conventional angle grinder,
Its optimized integration is to substitute series excited machine using high power density brushless motor, realizes electric-machine directly-driven working shaft.Direct-driving electric
Dynamic angle grinder is usually to be made of components such as motor, grinding head box, grinding wheel, bistrique handles, is installed on axis by electric machine main shaft driving
Grinding wheel rotation on head works.When angle grinder works, the self-heating of motor and electric-control system is by motor master
Axis drives internal centrifugal fan, forms forced convertion circulation air path between outside inside angle grinder and radiates, this mistake
External cutting metal break flour is sucked motor Inside coil region, permanent magnetic region by Cheng Jiyi, and break flour accumulates the rotor card that results in blockage
Extremely, directly threaten the safety of angle grinder.
Summary of the invention
The technical problems to be solved by the present invention are: provide it is a kind of can effectively realize that electrical-coil radiates, and can realize electricity
The straight drive angle grinder that machine coil, circuit are isolated with external environment.
The technical scheme adopted by the invention is that: a kind of air-cooled straight drive electric angle grinder, including casing and brushless motor,
The casing includes head and handle portion equipped with grinding, and brushless motor setting is on head, and the brushless motor
Output shaft is directly with grinding connection for driving grinding rotation, which is characterized in that is located on the main shaft of the brushless motor
Cooling fan is equipped between abrasive disc and motor housing, the cooling fan includes centrifuge blade, cover board and guide disc；It is described
Cover board be screwed the shell in motor, the guide disc is installed on the outer end of cover board.
Further, the guide disc is made of circular fan housing disk with wind guide tank, wherein fan housing disk and centrifuge blade
Cooperation sets the protrusion of a circular arc in circular fan housing disk side wall, and the inside of protrusion forms wind guide tank at flute profile, wind guide tank
It is docked with the air compartment in motor housing outlet.
Further, the motor housing is made of the armature chamber of tubulose with the air compartment for being set to armature chamber side wall, electricity
The outer wall of machine shell sets radiating ribs protrusion, wherein being equipped in the gap of the radiating ribs protrusion on the two sides outer wall adjacent with air compartment logical
The inner wall of air holes, the ventilation hole and air compartment connection, air compartment is equipped with radiating ribs.
Since cooling fan is installed on except driving motor by the present invention, and by a guide disc fan is generated it is cold
But wind is guided to the outer wall of motor, and the grating type exhaust vent by being located on the outer wall of motor flows out, and makes motor at work
In closed state, motor is implemented to cool down using external fan, realizes the direct driving motor work of the angle grinder under air-proof condition
When cooling problem, ensure that angle grinder service life.
Detailed description of the invention
Fig. 1, angle grinder overall structure diagram is driven for the present invention is straight；
Fig. 2, the guide disc structural schematic diagram to invent straight drive angle grinder；
Fig. 3, the motor housing structural schematic diagram that angle grinder is directly driven for the present invention.
Specific embodiment
Technical solution of the present invention is described further below in conjunction with attached drawing and specific embodiment, but the present invention is not
It is only limitted to following specific embodiments.
A kind of air-cooled straight drive electric angle grinder as shown in Figure 1:, including casing and brushless motor, the casing include setting
Have head and the handle portion of grinding, the brushless motor setting on head, and the main shaft 4 of the brushless motor directly with grinding
Connection is equipped between abrasive disc and motor housing 3 on the output shaft of the brushless motor for driving grinding rotation
Cooling fan, the cooling fan include centrifugal impeller 5, cover board 2 and guide disc 1, wherein the cover board 2 passes through screw
It is fixed on the shell of motor；It is provided with wind guide tank 12 on the guide disc 1, is screwed in cover board 2；The motor
Air compartment 32 is equipped in shell 3, motor housing 3 is equipped with grating type exhaust vent 31, and the inner wall of air compartment is equipped with radiating ribs 33.
As shown in Fig. 2, guide disc 1 is made of circular fan housing disk 11 with wind guide tank 12, wherein fan housing disk 11 and centrifugation leaf
5 cooperation of wheel sets the protrusion of a circular arc in circular 11 side wall of fan housing disk, and the inside of protrusion forms wind guide tank 12, lead at flute profile
It is docked with the air compartment 32 in motor housing 3 outlet of wind groove 12.
As shown in figure 3, motor housing 3 is made of the armature chamber of tubulose with the air compartment 32 for being set to armature chamber side wall, motor
The outer wall of shell 3 sets radiating ribs protrusion, wherein being equipped in the gap of the radiating ribs protrusion on the two sides outer wall adjacent with air compartment 32
Exhaust vent 31, the exhaust vent 31 and 32 connection of air compartment.It is prominent that the radiating ribs for reinforcing radiating are again provided on the side wall of 32 surrounding of air compartment
Play 33.
Angle grinder work when, electric machine main shaft 4 drive centrifugal impeller 5 rotate when, air from guide disc 1 fan housing disk 11 with
Gap between main shaft 4 flows into centrifugal impeller 5, then moving air is got rid of four walls to guide disc 1 from centrifugal impeller 5, and flowing is empty
Gas just passes through the entrance of the wind guide tank 12 on guide disc 1 and is arranged in the air compartment 32 of the default seed cell's side wall of motor housing 3, then via wind
Exhaust vent 31 of the room 32 on the outer wall of motor housing 3 flows out, and realizes the heat dissipation of motor.
Motor housing 3 is installed on handle one end of angle grinder, and the control circuit of brushless motor is partly installed in handle inner,
The entirety of angle grinder is formd by motor and handle.
Claims (3)
1. a kind of air-cooled straight drive electric angle grinder, including casing and brushless motor, the casing includes the head equipped with grinding
And handle portion, the brushless motor setting is on head, and the electric machine main shaft of the brushless motor is directly used for grinding connection
Driving grinding rotation, which is characterized in that be equipped between abrasive disc and motor housing on the main shaft of the brushless motor
Cooling fan, the cooling fan include centrifuge blade, cover board and guide disc；The cover board is screwed in motor
Shell, the guide disc is installed on the outer end of cover board.
2. straight drive electric angle grinder as described in claim 1, it is further characterized in that: the guide disc is by circular fan housing disk
It is constituted with wind guide tank, wherein fan housing disk and centrifuge blade cooperate, and set the protrusion of a circular arc, protrusion in circular fan housing disk side wall
Inside at flute profile, form wind guide tank, the outlet of wind guide tank is docked with the air compartment in motor housing.
3. as described in claim 1 straight drive electric angle grinder, it is further characterized in that: the motor housing by tubulose stator
Room and the air compartment for being set to armature chamber side wall are constituted, and the outer wall of motor housing sets radiating ribs protrusion, wherein adjacent with air compartment two
Ventilation hole, the ventilation hole and air compartment connection are equipped in the gap of radiating ribs protrusion on the outer wall of side, the inner wall of air compartment, which is equipped with, to be dissipated
Hot muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705743.1A CN110370138A (en) | 2019-08-01 | 2019-08-01 | A kind of air-cooled straight drive electric angle grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705743.1A CN110370138A (en) | 2019-08-01 | 2019-08-01 | A kind of air-cooled straight drive electric angle grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110370138A true CN110370138A (en) | 2019-10-25 |
Family
ID=68257554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910705743.1A Pending CN110370138A (en) | 2019-08-01 | 2019-08-01 | A kind of air-cooled straight drive electric angle grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110370138A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909566A (en) * | 2020-07-09 | 2022-01-11 | 南京德朔实业有限公司 | electrical tools |
| CN114248178A (en) * | 2022-01-25 | 2022-03-29 | 金伟 | Angle grinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203843807U (en) * | 2014-05-30 | 2014-09-24 | 浙江绿动电机科技有限公司 | Angle grinder |
| WO2015180395A1 (en) * | 2014-05-30 | 2015-12-03 | 浙江绿动电机科技有限公司 | Angle grinder |
| CN205042404U (en) * | 2015-10-08 | 2016-02-24 | 蓝思科技（长沙）有限公司 | Magnetic stirrer |
| CN206200693U (en) * | 2016-10-09 | 2017-05-31 | 苏州宝时得电动工具有限公司 | Brushless angle grinder |
| EP3290157A2 (en) * | 2016-08-29 | 2018-03-07 | Nanjing Chervon Industry Co., Ltd. | Angle grinder |
| CN208759249U (en) * | 2017-09-29 | 2019-04-19 | 南京德朔实业有限公司 | Hand held electric tool |
-
2019
- 2019-08-01 CN CN201910705743.1A patent/CN110370138A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203843807U (en) * | 2014-05-30 | 2014-09-24 | 浙江绿动电机科技有限公司 | Angle grinder |
| WO2015180395A1 (en) * | 2014-05-30 | 2015-12-03 | 浙江绿动电机科技有限公司 | Angle grinder |
| CN205042404U (en) * | 2015-10-08 | 2016-02-24 | 蓝思科技（长沙）有限公司 | Magnetic stirrer |
| EP3290157A2 (en) * | 2016-08-29 | 2018-03-07 | Nanjing Chervon Industry Co., Ltd. | Angle grinder |
| CN206200693U (en) * | 2016-10-09 | 2017-05-31 | 苏州宝时得电动工具有限公司 | Brushless angle grinder |
| CN208759249U (en) * | 2017-09-29 | 2019-04-19 | 南京德朔实业有限公司 | Hand held electric tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909566A (en) * | 2020-07-09 | 2022-01-11 | 南京德朔实业有限公司 | electrical tools |
| CN114248178A (en) * | 2022-01-25 | 2022-03-29 | 金伟 | Angle grinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191025 |
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| WD01 | Invention patent application deemed withdrawn after publication |