CN107914206A - Brushless angle grinder - Google Patents
Brushless angle grinder Download PDFInfo
- Publication number
- CN107914206A CN107914206A CN201610880878.8A CN201610880878A CN107914206A CN 107914206 A CN107914206 A CN 107914206A CN 201610880878 A CN201610880878 A CN 201610880878A CN 107914206 A CN107914206 A CN 107914206A
- Authority
- CN
- China
- Prior art keywords
- motor
- angle grinder
- stator
- dust
- dustproof cover
- 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
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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
- B24B23/028—Angle tools
-
- 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
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
Abstract
The present invention provides a kind of brushless angle grinder, including：Housing unit, including head capsule and the casing that is connected with the head capsule, the head capsule is enclosed with the casing is set as chamber, and work head is provided with the head capsule；Motor, is arranged in the chamber, and is set close to the work head；And dust-proof mechanism, cover at the outer rim at the axial both ends of the stator of the motor, the groove gap that the dust-proof mechanism can be between sealed stator coil and the stator and the rotor.The brushless angle grinder of the present invention ensures the dust-proof effect of motor by dust-proof mechanism, effectively solves the problems, such as the dust-proof of motor, avoids the impurity such as dust and iron filings from entering in rotor, extends the service life of motor, improves the reliability of brushless angle grinder, ensures work efficiency.Meanwhile after brushless angle grinder of the invention ensures the anti-dust performance of motor by dust-proof mechanism so that the sealing adhesive process and assembly technology of motor are simpler, and cost is low so that brushless angle grinder is simple and reliable for structure.
Description
Technical field
The present invention relates to angle grinder equipment technical field, more particularly to a kind of brushless angle grinder.
Background technology
For current angle grinder, the motor in angle grinder connects a flange, the head of the flange in stator inner ring
Rubber sleeve is inserted into, and is circumferentially interference fitted with rubber sleeve.Stator inner ring and the closing of coil groove gap.Dust can enter stator line
Circle, but stator inner ring, that is, stator inner ring and the groove gap of stator outer ring cannot be entered.It can so realize the sealing of motor, ensure electricity
The dust-proof effect of machine.But the stator coil of angle grinder needs whole sealings, to ensure the sealing of stator coil, but sealing work
Skill is complex and high cost, meanwhile, the connection of flange is also more complicated, it is necessary to use gemel connection, relatively difficult in technique, and then influences
The dust-proof effect of motor, shortens the service life of motor.
The content of the invention
Based on this, it is necessary to carry out sealing caused dust-proof effect by the flange of stator inner ring for current angle grinder
Bad problem, there is provided a kind of dust-proof effect that can ensure motor, the brushless angle grinder easy to motor assembling.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of brushless angle grinder, including：
Housing unit, including head capsule and the casing that is connected with the head capsule, the head capsule is enclosed with the casing is set as chamber,
Work head is installed in the head capsule；
Motor, is arranged in the chamber, and is set close to the work head；And
Dust-proof mechanism, covers at the outer rim at the axial both ends of the stator of the motor, and the dust-proof mechanism can seal institute
State the groove gap between stator coil and the stator and the rotor.
In one of the embodiments, the dust-proof mechanism includes the first dustproof cover and the second dustproof cover；
First dustproof cover is arranged at the side of the motor, and first dustproof cover and the stator of the motor
Outer rim abuts；
Second dustproof cover is arranged at the opposite side of the motor, and the stator of second dustproof cover and the motor
Outer rim abut.
In one of the embodiments, the brushless angle grinder further includes supporting mechanism, and the supporting mechanism is installed on institute
State in casing；
The supporting mechanism includes bearing and the support of bearing, and the support of bearing is fixed on the inner wall of the casing；
The motor has motor shaft, and the bearing holder (housing, cover) is arranged on the motor shaft, and the bearing is installed on the axis
Hold in stent.
In one of the embodiments, one end of second dustproof cover is abutted with the outer rim of the stator of the motor, institute
The other end for stating the second dustproof cover is abutted with the support of bearing.
In one of the embodiments, it is provided with through hole on first dustproof cover；
First dustproof cover is sheathed on the motor shaft by the through hole, and first dustproof cover and the electricity
There are sealing element between arbor.
In one of the embodiments, the motor also has end plate, and the end plate is arranged in the outer rim of the stator,
First dustproof cover is in contact by the end plate with the stator of the motor respectively with second dustproof cover.
In one of the embodiments, the dust-proof mechanism further includes foam-rubber cushion, and the foam-rubber cushion is arranged at described first
Between the outer rim of the stator of dustproof cover and the motor and between the outer rim of the stator of second dustproof cover and the motor.
In one of the embodiments, exist between the inner wall of the outer rim of the stator of the motor and the chamber between presetting
Gap.
In one of the embodiments, air outlet is provided with the head capsule, the air outlet is arranged at the work head
Top；
The air outlet corresponds to the prepsetting gap and sets.
In one of the embodiments, the brushless angle grinder further includes partition plate, and the partition plate is arranged at the air outlet
Marginal position, one end of the partition plate is connected with the inner wall of the head capsule, the other end of the partition plate and described first dust-proof
Lid abuts；
The partition plate can be such that the prepsetting gap is connected through the air outlet with external environment.
In one of the embodiments, the motor is arranged in the head capsule or the casing；
Alternatively, the motor is arranged at the junction of the head capsule and the casing.
In one of the embodiments, the brushless angle grinder further includes reducing gear, and the reducing gear is positioned at described
Between motor and the work head；
One end of the reducing gear and the motor axis connection, the other end of the reducing gear connect with the work head
Connect.
In one of the embodiments, the brushless angle grinder further includes fan, and the fan is arranged in the casing,
The fan is installed on the motor shaft；
And the reducing gear is located at the both sides of the motor with the fan respectively.
The beneficial effects of the invention are as follows：
The brushless angle grinder of the present invention, structure design advantages of simple, dust-proof mechanism cover at axial the two of the stator of motor
End so that dust-proof mechanism can be abutted with the outer rim of the stator of motor, between the stator and stator and rotor of sealed electric-motor
Groove gap.In this way, the impurity such as dust and iron filings that brushless angle grinder work produces cannot enter in stator coil and stator and rotor
Gap in, ensure the dust-proof effect of motor, to improve the reliability of motor, extend the service life of motor, then ensure nothing
The reliability of brush angle grinder.The brushless angle grinder of the present invention ensures the dust-proof effect of motor by dust-proof mechanism, effective to solve
The dust-proof problem of motor, avoids the impurity such as dust and iron filings from entering in rotor, extends the service life of motor, improves brushless angle mill
The reliability of machine, ensures work efficiency.Meanwhile brushless angle grinder of the invention ensures the anti-dust performance of motor by dust-proof mechanism
Afterwards so that the sealing adhesive process and assembly technology of motor are simpler, and cost is low so that brushless angle grinder is simple and reliable for structure.
Brief description of the drawings
Fig. 1 is the partial structural diagram of the brushless angle grinder of one embodiment of the invention；
Wherein：
Angle grinder that 100- is brushless；
110- housing units；
111- head capsules；
1111- output shafts；
1112- work heads；
1113- air outlets；
112- casings；
120- motors；
121- stators；
122- rotors；
123- motor shafts；
130- dust-proof mechanisms；
The first dustproof covers of 131-；
The second dustproof covers of 132-；
140- supporting mechanisms；
141- bearings；
The 142- supports of bearing；
150- partition plates；
160- reducing gears；
The first bevel gears of 161-；
The second bevel gears of 162-；
170- fans.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and combine attached
Figure, is further elaborated the brushless angle grinder of the present invention.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " axial direction ",
The orientation or position relationship of the instructions such as " radial direction ", " circumferential direction " are based on orientation shown in the drawings or position relationship, merely to just
In the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected or can communicate each other；It can be directly connected, can also be indirectly connected by intermediary, can be with
It is the interaction relationship of connection inside two elements or two elements, unless otherwise restricted clearly.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Referring to Fig. 1, the present invention provides a kind of brushless angle grinder 100, angle grinder 100 that this is brushless can be to metal or stone
The operations such as the workpiece such as material are cut, ground, brushing and polishing.Also, the brushless angle grinder 100 of the present invention can avoid making
Conducted with carbon brush, save the energy consumption that carbon brush is brought, be easy to use.The brushless angle grinder 100 of the present invention can solve
The problem of motor 120 is dust-proof, avoid brushless angle grinder 100 work caused by the impurity such as dust and iron filings enter motor 120
In the gap of stator coil and stator 121 and rotor 122, the reliability of motor 120 is improved, extends the service life of motor 120,
And then ensure the reliability of brushless angle grinder 100, improve the work efficiency of brushless angle grinder 100.Meanwhile brushless angle of the invention
The structure of grinding machine 100 is simple, and cost is low, and operation is reliable, is easy to use.
In the present invention, brushless angle grinder 100 includes housing unit 110, motor 120 and dust-proof mechanism 130.Motor 120
It is mounted on dust-proof mechanism 130 in housing unit 110.Housing unit 110 is for playing protective action, can so avoid
Operating personnel touch the parts inside housing unit 110 when using brushless angle grinder 100, ensure the use peace of operating personnel
Entirely, security performance is improved.Meanwhile brushless angle grinder 100 can produce dust at work, housing unit 110 can avoid dust
The inside of housing unit 110 is entered, and then avoids dirt accumulation on the parts inside housing unit 110, is extended brushless
The service life of angle grinder 100, improves the work efficiency of brushless angle grinder 100.Motor 120 provides dynamic for brushless angle grinder 100
Power source so that brushless angle grinder 100 work when can normal operation, ensure brushless 100 reliable operation of angle grinder.Dust-proof mechanism
130 can ensure the dust-proof effect of motor 120, and the effective impurity such as dust and iron filings that solves enters stator coil and stator
121, with the gap of rotor 122, extending the service life of motor 120, ensure the reliability of brushless angle grinder 100 so that brushless
Angle grinder 100 being capable of even running.
Housing unit 110 includes head capsule 111 and the casing 112 being connected with head capsule 111, and head capsule 111 is enclosed with casing 112 to be set as
Chamber, is provided with work first 1112 in head capsule 111.Output shaft 1111 is installed, work first 1112 is installed on output in head capsule 111
On axis 1111, output shaft 1111 can drive work first 1112 to rotate.So brushless angle grinder 100 at work, output shaft
1111 drive work first 1112 rotate the operations such as the cutting, grinding and polishing to realize brushless angle grinder 100.Brushless angle grinder
100 each parts are mounted in chamber, and protective action is played by head capsule 111 and casing 112.Meanwhile head capsule 111 with
The connection of casing 112 can also play sealing function, can prevent part dust from entering in chamber, extend brushless angle grinder 100
Service life.
Motor 120 is arranged in chamber, and close to first 1112 setting that works.That is, motor 120 is to be located at brushless angle
The head of grinding machine 100.In such manner, it is possible to reduce the outgoing route of 120 moment of torsion of motor, moment of torsion is avoided to be lost in transmittance process,
The output torque of motor 120 is improved, then ensures the output torque of brushless angle grinder 100.Dust-proof mechanism 130 covers at motor
The outer rim at the axial both ends of 120 stator 121, dust-proof mechanism 130 can be between sealed stator 121 and stator 121 and rotors 122
Groove gap.Dust-proof mechanism 130 is capable of the gap between the stator coil and stator 121 and rotor 122 of sealed electric-motor 120 so that
The impurity such as dust and iron filings cannot enter the gap of stator coil and stator 121 and rotor 122, effectively avoid rotor 122 from inhaling
Enter the impurity such as iron filings, extend the service life of motor 120, and then extend the service life of brushless angle grinder 100.
Specifically, dust-proof mechanism 130 includes the first dustproof cover 131 and the second dustproof cover 132.First dustproof cover 131 is set
In the side of motor 120, and the first dustproof cover 131 is abutted with the outer rim of the stator 121 of motor 120.Second dustproof cover 132 is set
In the opposite side of motor 120, and the second dustproof cover 132 is abutted with the outer rim of the stator 121 of motor 120.First dustproof cover 131 with
Second dustproof cover 132 is respectively arranged at the both sides of motor 120, ensures the leakproofness of 120 both sides of motor, avoids dust and iron filings etc.
Impurity enters from the both sides of motor 120 respectively, ensures the dust-proof effect of motor 120, improves the reliability of motor 120.Such energy
The impurity such as dust and iron filings are enough avoided to enter the gap of stator coil and stator 121 and rotor 122 from the both sides of motor 120
In, the reliability of motor 120 is improved, extends the service life of motor 120, and then ensure the brushless angle grinder 100 of the present invention
The reliability of work.
Further, brushless angle grinder 100 further includes grip part, and grip part is arranged on the outer circumferential surface of casing 112.Grip
Portion is gripped for personnel easy to operation when using brushless angle grinder 100, in order to the operation of brushless angle grinder 100.Together
When, there are pre-determined distance between grip part and motor 120.I.e. motor 120 is arranged on the head of brushless angle grinder 100, to avoid
Motor 120 is arranged in grip part.This is because motor 120 can produce certain heat at work, which can pass through machine
Shell 112 passes to grip part, and when operating personnel use brushless angle grinder 100 in hand-held grip part, heat can be delivered to operator
Member on hand, influences comfort level when operating personnel use, influences user experience, portion personnel easy to operation are gripping.Also, electricity
When machine 120 is arranged on the head of brushless angle grinder 100, the circumferential size of grip part can be reduced, personnel easy to operation are for a long time
Grip.
Further, casing 112 and the junction rounding off of grip part, can so reduce brushless angle grinder 100
Package size.The size of grip part can also be reduced at the same time, moreover, grip part can move forward, headward movement, that is, operate
The hand of personnel closer to work first 1112, can so reduce hand and the work first the distance between 1112 of operating personnel,
And then the active force that operating personnel are subject to is reduced, improve user experience.Certainly, the part of rounding off can also be grip part,
So enable to grip part closer to work first 1112, reduce operating personnel grip brushless angle grinder 100 when with work head
The arm of force between 1112, lifts user experience.
For current angle grinder, the motor in angle grinder connects a flange, the head of the flange in stator inner ring
Rubber sleeve is inserted into, and is circumferentially interference fitted with rubber sleeve.Stator inner ring and the closing of coil groove gap.Dust can enter stator line
Circle, but stator inner ring, that is, stator inner ring and the groove gap of stator outer ring cannot be entered.It can so realize the sealing of motor, ensure electricity
The dust-proof effect of machine.But the stator coil of angle grinder needs whole sealings, to ensure the sealing of stator coil, but sealing work
Skill is complex and high cost, meanwhile, the connection of flange is also more complicated, it is necessary to use gemel connection, relatively difficult in technique, and then influences
The dust-proof effect of motor, shortens the service life of motor.The dust-proof mechanism 130 of the brushless angle grinder 100 of the present invention covers at electricity
The both sides of machine 120 so that dust-proof mechanism 130 can be abutted with the outer rim of the stator 121 of motor 120, with determining for sealed electric-motor 120
Son 121 and the groove gap between stator 121 and rotor 122.In this way, dust and iron filings that the brushless work of angle grinder 100 produces etc. are miscellaneous
Matter cannot enter in stator coil and stator coil is with the gap of rotor 122, ensureing the dust-proof effect of motor 120, to improve
The reliability of motor 120, extends the service life of motor 120, then ensures the reliability of brushless angle grinder 100.The present invention's
Brushless angle grinder 100 ensures the dust-proof effect of motor 120 by dust-proof mechanism 130, and effective the dust-proof of motor 120 that solve is asked
Topic, avoids the impurity such as dust and iron filings from entering in rotor 122, extends the service life of motor 120, improves brushless angle grinder 100
Reliability, ensure work efficiency.Meanwhile brushless angle grinder 100 of the invention ensures motor 120 by dust-proof mechanism 130
After anti-dust performance so that the sealing adhesive process and assembly technology of motor 120 are simpler, and cost is low so that brushless 100 structure of angle grinder
It is simple and reliable.
As a kind of embodiment, brushless angle grinder 100 further includes supporting mechanism 140, and supporting mechanism 140 is installed on machine
In shell 112.Supporting mechanism 140 be for supporting motor shaft 123 so that motor shaft 123 can smooth rotation, avoid motor shaft
123 position occurs play and influences the working effect of work first 1112.Supporting mechanism 140 includes bearing 141 and the support of bearing
142, the support of bearing 142 is fixed on the inner wall of casing 112.Motor 120 has motor shaft 123, and bearing 141 is sheathed on motor shaft
On 123, and bearing 141 is installed in the support of bearing 142.The support of bearing 142 can fix the position of motor shaft 123, at the same time
Bearing 141 can avoid interfering between the support of bearing 142 and motor shaft 123, ensure 123 stability of rotation of motor shaft.
Further, one end of the second dustproof cover 132 is abutted with the outer rim of the stator 121 of motor 120, the second dustproof cover
132 other end is abutted with the support of bearing 142.Second dustproof cover 132 is mounted in the support of bearing 142, the second dustproof cover 132
One end and motor 120 stator 121 outer fringe seal, the other end and the support of bearing 142 of the second dustproof cover 132 are sealed, kept away
Exempt from the impurity such as dust and iron filings to enter in the gap of stator coil and stator 121 with rotor 122 from the both sides of motor 120, carry
The reliability of high motor 120, extends the service life of motor 120, and then ensure the work of the brushless angle grinder 100 of the present invention
Reliability.
Yet further, it is provided with through hole on the first dustproof cover 131.First dustproof cover 131 is sheathed on motor by through hole
On axis 123, and there are sealing element between the first dustproof cover 131 and motor shaft 123.Through hole can avoid the first dustproof cover 131
With the interference problem between motor shaft 123, ensure that motor shaft 123 being capable of even running.Meanwhile for avoid dust by through hole into
Enter between the first dustproof cover 131 and motor 120, sealing element also is set between the first dustproof cover 131 and motor shaft 123, with
Ensure the sealing effect of the first dustproof cover 131, while the interference between the first dustproof cover 131 and motor shaft 123 can also be avoided.
As a kind of embodiment, motor 120 also has end plate, and end plate is arranged in the outer rim of stator 121, and first is anti-
Dirt lid 131 is in contact by end plate with the stator 121 of motor 120 respectively with the second dustproof cover 132.End plate can play certain
Dustproof effect, and with after the first dustproof cover 131 and the cooperation of the second dustproof cover 132, the dust-proof effect of motor 120 can be further improved
Fruit, effectively solves the problems, such as that motor 120 is dust-proof, avoids the impurity such as dust and iron filings from entering stator coil and stator 121 with turning
The gap of son 122, extends the service life of motor 120.
Further, dust-proof mechanism 130 further includes foam-rubber cushion, and foam-rubber cushion is arranged at the first dustproof cover 131 and motor 120
Between the outer rim of stator 121 and between the outer rim of the stator 121 of the second dustproof cover 132 and motor 120.Foam-rubber cushion, which can play, to be subtracted
The effect of shake, while can also ensure that contacted between the first dustproof cover 131 and the second dustproof cover 132 and the outer rim of stator 121 can
Lean on, ensure sealing effect.
As a kind of embodiment, exist between the outer rim of stator 121 and the inner wall of chamber of motor 120 between presetting
Gap.Since motor 120 can produce heat at work, which can be easy to the heat dissipation of motor 120, avoid motor 120
Overheat and burn motor 120, improve the reliability of motor 120, extend the service life of motor 120.Meanwhile the prepsetting gap is also
It can be easy to the flowing of the impurity such as dust and dust, avoid accumulation of impurities in chamber.
Further, air outlet 1113 is provided with head capsule 111, air outlet 1113 is arranged at the top of work first 1112.
Air outlet 1113 corresponds to prepsetting gap and sets.When brushless angle grinder 100 works, the inside of chamber has air-flow flowing, air-flow energy
Enough heat is driven to be flowed in prepsetting gap.Air-flow drives heat to send out chamber, energy by air outlet 1113 by prepsetting gap
Enough reduce the temperature in chamber, the effective heat dissipation effect for ensureing motor 120.Meanwhile the impurity such as dust and iron filings can also be
Head capsule 111 is discharged by air outlet 1113 through prepsetting gap under the drive of air-flow, avoids accumulation of impurities in chamber, ensures motor
120 dust-proof effect, extends the service life of motor 120.
Yet further, brushless angle grinder 100 further includes partition plate 150, and partition plate 150 is arranged at the margin location of air outlet 1113
Put, one end of partition plate 150 is connected with the inner wall of head capsule 111, and the other end of partition plate 150 is abutted with the first dustproof cover 131.Partition plate
150 can be such that prepsetting gap is connected through air outlet 1113 with external environment.Head capsule 111 can be divided into two appearances by partition plate 150
Receive chamber, one of accommodating chamber be for placing reducing gear 160, another accommodating chamber be for connect air outlet 1113 with
Prepsetting gap.So the impurity such as dust and iron filings can be avoided to enter in reducing gear 160, ensure brushless angle grinder 100
Operate steadily, avoid the occurrence of stuck phenomenon, improve the reliability of brushless angle grinder 100.Brushless angle grinder 100 at work, chamber
It is outer that air-flow in room can drive the impurity such as dust and iron filings to be entered by prepsetting gap and accommodating chamber by air outlet 1113
In boundary's environment, the accumulation of impurities such as dust and iron filings are avoided in chamber.Since the impurity such as the dust in chamber and iron filings are few, then
The both sides of motor 120 are covered at by dust-proof mechanism 130, the dust-proof effect of motor 120 can be significantly improved, improve motor 120
Reliability.
As a kind of embodiment, brushless angle grinder 100 further includes reducing gear 160, and reducing gear 160 is located at motor
Between 120 and work first 1112.One end of reducing gear 160 is connected with motor shaft 123, the other end and work of reducing gear 160
Make first 1112 connection.Reducing gear 160 is reduction gear of bevel gear structure.The brushless angle grinder 100 of the present invention is slowed down by bevel gear
Mechanism realizes the increase of 120 output torque of motor, and then improves the output torque of brushless angle grinder 100, meets operating personnel's
Use demand.Specifically, reduction gear of bevel gear structure includes the first bevel gear 161 and be meshed with the first bevel gear 161 second
Bevel gear 162.First bevel gear 161 is arranged on the output terminal of motor 120, and the second bevel gear 162 is arranged at and work head
On the output shaft 1111 of 1112 connections.The axis of first bevel gear 161 and the second bevel gear 162 is mutually perpendicular to, the first bevel gear
161 engaged with the second bevel gear 162 after can realize the change of the direction of motion, and then realize the moment of torsion of brushless angle grinder 100
Output.
Further, the first bevel gear 161 and the second bevel gear 162 are gear with curved teeth.The first umbrella tooth can so be increased
The 161 contact ratios with the second bevel gear 162 are taken turns, that is, add contact ratio, impact is alleviated, makes the first bevel gear 161
More steady with the transmission of the second bevel gear 162, noise when reducing operation, improves comfortable sexual experience.Meanwhile it is gear with curved teeth
First bevel gear 161 can also make load specific pressure drop low with the second bevel gear 162 so that the first bevel gear 161 and the second umbrella tooth
The abrasion of wheel 162 is more uniform, accordingly increases the load capacity of the first bevel gear 161 and the second bevel gear 162, extends the first umbrella
The service life of 161 and second bevel gear 162 of gear.Yet further, the diameter of the first bevel gear 161 is less than the second bevel gear
162 diameter.The output torque of motor 120 can so be increased, and then improve the output torque of brushless angle grinder 100, met
The use demand of operating personnel.
Certainly, in other embodiments of the invention, reducing gear 160 can also be turbine and worm decelerator worm gear snail
Bar reducing gear can also realize that the direction of the output movement of motor 120 changes so that the movement of motor 120 can pass to work
Make first 1112, ensure the working performance of brushless angle grinder 100.
As a kind of embodiment, motor 120 is arranged in head capsule 111 or casing 112；Alternatively, motor 120 is set
In the junction of head capsule 111 and casing 112.That is, motor 120 can be located in head capsule 111.Motor 120 can also position
In casing 112, and motor 120 is set adjacent to head capsule 111.Motor 120 may be located on the connection of casing 112 and head capsule 111
Place.The path of 120 output torque of motor can so reduced, reduces loss.As long as the position of motor 120 is not located at grip part
In can meet requirement.The brushless angle grinder 100 of the present invention passes through the position of motor 120 is preposition and coordinate reducing gear
160 come solve the problems, such as output moment of torsion it is small, improve the output torque of brushless angle grinder 100, meet the use need of operating personnel
Ask.
As a kind of embodiment, brushless angle grinder 100 further includes fan 170, and fan 170 is arranged in casing 112,
Fan 170 is installed on motor shaft 123.Reducing gear 160 is located at the both sides of motor 120 with fan 170 respectively.That is,
The fan 170 of the brushless angle grinder 100 of the present invention is not arranged in head capsule 111, and is provided in casing 112.If wind
Fan 170 is arranged in head capsule 111, and since fan 170 has certain width, such fan 170 can increase the axis of head capsule 111
To the overall dimensions of width, then increase head capsule 111.The brushless angle grinder 100 of the present invention is to reduce the axial dimension of head capsule 111
Fan 170 is arranged in casing 112, can so reduce the overall dimensions of head capsule 111, then reduce package size.Meanwhile
Since the axial dimension of head capsule 111 reduces, the work first 1112 of corresponding casing 112 closer to head capsule 111 is set, so that
Grip part on casing 112, closer to work first 1112, so enables to grip part for current angle grinder
Position moves forward, and then reduces grip part and work first the distance between 1112, when reduction operating personnel grip brushless angle grinder 100
The arm of force, personnel easy to operation grip brushless angle grinder 100 so that grip more comfortable, lift man-machine experience.
Meanwhile brushless angle grinder 100 is at work, motor shaft 123 can drive fan 170 to rotate, and fan 170 can add
Air-flow flowing in fast chamber, and then the heat dissipation of motor 120 is can speed up, while the impurity such as dust and iron filings can also be easy to
Flowing so that the impurity such as dust and iron filings can be entered in external environment by air outlet 1113, avoid dust and iron filings etc. miscellaneous
Matter is accumulated in chamber, is ensured the cold reliability removed effect and dust-proof effect, improve motor 120 of motor 120, is extended motor
120 service life.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (13)
- A kind of 1. brushless angle grinder, it is characterised in that including：Housing unit, including head capsule and the casing that is connected with the head capsule, the head capsule is enclosed with the casing is set as chamber, described Work head is installed in head capsule；Motor, is arranged in the chamber, and is set close to the work head；AndDust-proof mechanism, covers at the outer rim at the axial both ends of the stator of the motor, and the dust-proof mechanism being capable of sealed stator line Circle and the groove gap between the stator and the rotor.
- 2. brushless angle grinder according to claim 1, it is characterised in that the dust-proof mechanism includes the first dustproof cover and the Two dustproof covers；First dustproof cover is arranged at the side of the motor, and the outer rim of first dustproof cover and the stator of the motor Abut；Second dustproof cover is arranged at the opposite side of the motor, and the stator of second dustproof cover and the motor is outer Edge abuts.
- 3. brushless angle grinder according to claim 2, it is characterised in that further include supporting mechanism, the supporting mechanism peace Loaded in the casing；The supporting mechanism includes bearing and the support of bearing, and the support of bearing is fixed on the inner wall of the casing；The motor has motor shaft, and the bearing holder (housing, cover) is arranged on the motor shaft, and the bearing is installed on the bearing branch In frame.
- 4. brushless angle grinder according to claim 3, it is characterised in that one end of second dustproof cover and the motor The outer rim of stator abut, the other end of second dustproof cover abuts with the support of bearing.
- 5. brushless angle grinder according to claim 3, it is characterised in that be provided with through hole on first dustproof cover；First dustproof cover is sheathed on the motor shaft by the through hole, and first dustproof cover and the motor shaft Between there are sealing element.
- 6. brushless angle grinder according to claim 2, it is characterised in that the motor also has end plate, and the end plate is set It is placed in the outer rim of the stator, first dustproof cover passes through the end plate and the motor respectively with second dustproof cover Stator be in contact.
- 7. brushless angle grinder according to claim 2, it is characterised in that the dust-proof mechanism further includes foam-rubber cushion, described Foam-rubber cushion is arranged between the outer rim of the stator of first dustproof cover and the motor and second dustproof cover and the electricity Between the outer rim of the stator of machine.
- 8. brushless angle grinder according to claim 2, it is characterised in that the outer rim of the stator of the motor and the chamber Inner wall between there are prepsetting gap.
- 9. brushless angle grinder according to claim 8, it is characterised in that be provided with air outlet on the head capsule, it is described go out Air port is arranged at the top of the work head；The air outlet corresponds to the prepsetting gap and sets.
- 10. brushless angle grinder according to claim 9, it is characterised in that further include partition plate, the partition plate is arranged at described The marginal position of air outlet, one end of the partition plate are connected with the inner wall of the head capsule, the other end of the partition plate and described the One dustproof cover abuts；The partition plate can be such that the prepsetting gap is connected through the air outlet with external environment.
- 11. brushless angle grinder according to claim 1, it is characterised in that the motor is arranged at the head capsule or institute State in casing；Alternatively, the motor is arranged at the junction of the head capsule and the casing.
- 12. brushless angle grinder according to claim 3, it is characterised in that further include reducing gear, the reducing gear position Between the motor and the work head；One end of the reducing gear and the motor axis connection, the other end of the reducing gear are connected with the work head.
- 13. brushless angle grinder according to claim 12, it is characterised in that further include fan, the fan is arranged at institute State in casing, the fan is installed on the motor shaft；And the reducing gear is located at the both sides of the motor with the fan respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880878.8A CN107914206A (en) | 2016-10-09 | 2016-10-09 | Brushless angle grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880878.8A CN107914206A (en) | 2016-10-09 | 2016-10-09 | Brushless angle grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107914206A true CN107914206A (en) | 2018-04-17 |
Family
ID=61892193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610880878.8A Pending CN107914206A (en) | 2016-10-09 | 2016-10-09 | Brushless angle grinder |
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| Country | Link |
|---|---|
| CN (1) | CN107914206A (en) |
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