CN106856362A - Electric tool - Google Patents
Electric tool Download PDFInfo
- Publication number
- CN106856362A CN106856362A CN201510902197.2A CN201510902197A CN106856362A CN 106856362 A CN106856362 A CN 106856362A CN 201510902197 A CN201510902197 A CN 201510902197A CN 106856362 A CN106856362 A CN 106856362A
- Authority
- CN
- China
- Prior art keywords
- motor
- air
- fuselage
- air inlet
- air channel
- 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
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 210000003205 muscle Anatomy 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000005855 radiation Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a kind of electric tool, including：Fuselage；Handle；Motor；Fuselage air inlet, is arranged on the side face of the main body, the forward position of motor；Air outlet；Cooling fan；The first air channel and the second air channel are provided with main body；The air channel with fuselage air inlet as starting point, by the gap between the gusset in motor shaft upward front end face and casing；Second air channel with fuselage air inlet as starting point, by the gap between motor outer wall radially and the inwall of casing.Relative to prior art, electric tool of the invention makes the second air channel by the gap between motor periphery and fuselage interior by setting the first air channel and the second air channel in electric tool, increased the steering number of times of air-flow, so that in radiation processes, the dust impurity for flowing into motor is few.
Description
Technical field
The invention belongs to field of power tools, more particularly to a kind of hand held electric tool with cooling air channel.
Background technology
In order to cool down motor, existing electric tool is often provided with air inlet and air outlet on fuselage,
Cooling fan is provided with fuselage, the heat that motor work is produced is taken away by causing air flow through motor.So
And, while air-flow is cooled down into motor to it, can also bring the dust impurity in the external world into, these ashes
Trifle in the world matter is slowly accumulated on motor, can influence service efficiency and the life-span of motor.
Simultaneously current cooling air channel is often passed through from the middle of motor, and the stator heat on the outside of motor can not be timely
Distribute.
The content of the invention
The present invention is intended to provide a kind of cooling air-flow carrying impurity is few, the good electric tool of cooling effect of motor.
In order to solve the above technical problems, the invention provides：
A kind of electric tool, including：Fuselage, the main body with tubular；Handle, is connected to fuselage lower section；
Motor, is arranged in the main body, outputting rotary power；Fuselage air inlet, is arranged at the week of the main body
On face, the forward position of motor；Air outlet, is arranged on the side face of the main body, the rearward position of motor；
Cooling fan, drives rotation to generate cooling air-flow by motor；Motor air inlet, before the motor
On end face, the first air channel and the second air channel are provided with the main body；First air channel is with fuselage air inlet
Starting point, by the gap between the gusset in motor shaft upward front end face and casing, reaches motor air inlet；
Second air channel with fuselage air inlet as starting point, by between motor outer wall radially and the inwall of casing
Gap, lead to motor air inlet.
Further, the fuselage air inlet includes being formed at opening in main body, and under opening,
Towards the paravent of the opening, the both sides of the paravent form the first air-inlet window and second positioned opposite
Air-inlet window, first air-inlet window externally towards motor rear, forms the starting point in the first air channel；Described second
Air-inlet window externally towards motor front, forms the starting point in the second air channel.
Further, the front side of first air-inlet window upwards, is disposed with the first stop wall, institute in casing
State the basic radial arrangement along motor of the first stop wall.
Further, the end in first air channel, is disposed with the second stop wall in casing, described second stops
Retaining wall is basically perpendicular to the radial arrangement of motor.
Further, the both sides of second stop wall are respectively provided with motor air inlet, and the first air channel is formed respectively
With the terminal in the second air channel.
Further, the anterior location arrangements of motor are corresponded on the casing inner wall motor positioning bar, institute
The outer wall that motor positioning bar abuts motor is stated, and there is the first breach and the second breach in the circumferential；Described
One breach is abutted and connects the fuselage air inlet, and second breach is abutted and connects the motor air inlet；
Be disposed between first breach and the second breach foregoing motor outer wall radially and casing inwall it
Between gap.
Further, first breach, the second breach and motor air inlet are located at the part in the second air channel
Projection on motor cross section is disconnected from each other.
Further, the 3rd stop wall, the 3rd backstop are formed in the end in second air channel, casing
Wall is to the motor air inlet and second breach.
Further, the quantity of the fuselage air inlet is multiple, along the circumferentially-spaced arrangement of casing.
Relative to prior art, electric tool of the invention in electric tool by setting the first air channel and
Two air channels, and make the second air channel by the gap between motor periphery and fuselage interior, air-flow is flowed through motor
Stator outside, and the steering number of times of air-flow is increased, so that electric tool is in radiation processes, flow into
The dust impurity of motor is few, and can well cool down motor stator.
Brief description of the drawings
Fig. 1 is a kind of stereogram of the electric tool of specific embodiment of the invention.
Fig. 2 is the phantom of the electric tool in Fig. 1.
Fig. 3 is the internal structure stereogram of the electric tool in Fig. 1.
Fig. 4 is the magnified partial view of Fig. 3.
Fig. 5 is mounted with the internal structure stereogram of motor for the electric tool in Fig. 3.
1st, main body 3, handle
5th, work first 7, fuselage air inlet
9th, air outlet 11, battery bag
13rd, motor 15, paravent
17th, the first stop wall 19, the second stop wall
21st, motor positioning bar 23, the first breach
25th, the second breach 27, the 3rd stop wall
30th, cooling fan a, the first cooling air-flow
B, the second cooling air-flow
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these realities
The mode of applying is not intended to limit the present invention, and one of ordinary skill in the art is made according to these implementation methods
Structure, method or conversion functionally are all contained in protection scope of the present invention.
For convenience of description, the left direction with Fig. 2-5 is the front of electric tool, after right direction is
Side, upside direction is top, and downside direction is lower section.
As shown in figure 1, in the present embodiment, hand held electric tool is a DC tools, specially one
Individual impact wrench.Certainly, in other alternative-embodiments, hand held electric tool can also be screw
Batch, electric drill, impact drill etc..
In the present embodiment, impact wrench includes fuselage 1, the work first 5 positioned at the front of fuselage 1, connection
Handle 3 below fuselage 1, dismountable battery bag 11 being arranged in below handle 3, positioned at fuselage
Motor 13 in 1.
Fuselage 1 has substantially cylindrical main body, and handle 3 and fuselage are arranged into 1 angle, on handle 3
The position of the close fuselage 1 in portion is provided with a shift knob, and user is by operation button switch control
The opening and closing of electric tool.When motor 13 starts, the externally output power of work first 5 is driven, at this
In embodiment, work first 5 is used for tightening nut, externally the direction of rotation impulsive force of output recurrent pulse.
With continued reference to Fig. 1, fuselage air inlet 7 and air outlet 9 are provided with fuselage 1.Fuselage air inlet 7
It is arranged on the side face of main body, in the longitudinal direction positioned at the front side of motor 13.In the present embodiment, machine
The quantity of body air inlet 7 is multiple, along the circumferential direction arranged for interval of main body, in the longitudinal direction then
Generally within same position.Preferably, 4 fuselage air inlets 7 are provided with main body, respectively positioned at master
The upper left of body, upper right, lower-left, bottom-right location, the vertical section relative to fuselage are symmetrical.Meanwhile, reference
Fig. 3, Fig. 4, the rear of motor 13 are disposed with cooling fan 30, and cooling fan 30 is with motor rotation
Negative pressure is formed, air-flow is entered from fuselage air inlet 7, by after motor 13, being flowed out from air outlet 9,
The work heat of generation of motor 13 is taken away.
With reference to Fig. 1 and Fig. 5, fuselage air inlet 7 includes being formed at opening in main body, and positioned at opening
Under mouthful, towards the paravent 15 of opening, the both sides of paravent 15 form two windows positioned opposite,
Respectively the first air-inlet window and the second air-inlet window.Two air-inlet windows are basically parallel to the radial direction of motor,
First air-inlet window is forward, and the second air-inlet window is rearward.It is inner side direction, the first air-inlet window pair with fuselage interior
Outward towards the rear of motor, the second air-inlet window is externally towards the front of motor.Paravent 15 is equivalent to one
Screen, prevents air-flow to be directly entered in fuselage 1 along the radial direction of motor from opening, makes air-flow
It is divided into front and rear two strands, enters the first air-inlet window towards motor front side direction respectively, enters towards motor rear direction
Second air-inlet window.In this process, air-flow rushes at paravent 15, rear steering of being obstructed, the grey trifle in the world in part
Matter etc. falls paravent 15.
The first air channel and the second air channel are provided with main body.First air channel with fuselage air inlet as starting point, by electricity
The gap between gusset in arbor upward front end face and casing, reaches motor air inlet；Second air channel with
Fuselage air inlet is starting point, by the gap between motor outer wall radially and the inwall of casing, leads to electricity
Machine air inlet.
Reference picture 2, is arranged by the structure in main body, air-flow trend such as the first cooling air-flow in the first air channel
Shown in a, the air-flow in the second air channel is axially as shown in the second cooling air-flow b.
With reference to Fig. 1-5, the first air channel with the first air-inlet window be starting point, with motor air inlet as terminal.Due to
The opening direction of one air-inlet window is directed towards motor axially and backward, the first cooling air-flow a blows with forward direction
In entering fuselage 1.The first stop wall 17, the first stop wall are disposed with the front portion of the first air-inlet window, in casing
The 17 basic radial arrangements along motor.After first cooling air-flow a is flushed in the first stop wall 17, part dust
Impurity is bumped against in the first stop wall 17 and fallen.Because the motor air inlet on motor front end face is located at the
The rear of one stop wall 17 and radially inner side, after the first cooling air-flow a leaves from the first stop wall 17,
Gap between casing and motor front end face turns to be flowed backward, is then hit to radially inner side flowing again
Positioned at the second stop wall 19 of the end in the first air channel, the second stop wall 19 is basically perpendicular to the radial direction cloth of motor
Put, and positioned at the front of motor air inlet.Therefore, air-flow is returned again to after being flushed in the second stop wall 19,
Back into motor air inlet.In steering, remaining dust impurity is again because inertia hits the first backstop
Wall 19 simultaneously falls.Eventually enter into the air-flow of motor air inlet, dust impurity is most of to turn to decline for several times
Under, stay in casing gap, it is ensured that the cleaning of motor 13.
Continuing with Fig. 1-5, the second air channel with the second air-inlet window be starting point, with motor air inlet as terminal.The
The main part in two air channels is located on the gap formed between the stator outer peripheral face of motor and the inwall of fuselage.Tool
Body, the front portion of motor 13 is fixed in fuselage by motor positioning bar 21, and motor positioning bar 21 is along fuselage
Main body circumferentially extending, abut the outer wall of motor, but both sides in the circumferential form the first breach 23 and the
Two breach 25, the first breach 23 is abutted and connects foregoing fuselage air inlet 7, specially the second air-inlet window.
Second breach is abutted and connects motor air inlet.Meanwhile, by foregoing between the first breach and the second breach
Gap connection between motor outer wall radially and the inwall of casing, and in the front end face side of motor 13,
First breach 23 and the second breach 25 are isolated from each other, and do not connect mutually, specifically, in motor front end face side,
The second foregoing stop wall 19 isolates the first breach 23 and the second breach 25.So, the second cooling air-flow
B enters first from the second air-inlet window, because the direction of the second air-inlet window arranges that the second cooling air-flow b is entering
Flowed backwards when entering fuselage, the gap entered between motor periphery and fuselage inwall by the first breach 23, by
Driven in negative pressure, air-flow is turned to, flowed to the direction of the second breach 25, that is, along the periphery circumference of motor
Towards the flowing of the position of the second breach 25；Because the opening direction of the second breach 25 is motor axial direction, therefore in order to
Motor air inlet is reached, the second cooling air-flow b switchs to pass through the second breach 25 forward, in this direction,
The 3rd stop wall 27 is bumped against, the 3rd stop wall 27 is located at the end in the second air channel, towards the He of the second breach 25
Motor air inlet, position is located at before being somebody's turn to do the two.After the 3rd stop wall 27 is bumped against, because negative pressure drives,
Second cooling air-flow b is returned again to, and motor air inlet is flowed into backward.
In the present embodiment, the first breach 23, the second breach 25 and motor air inlet are located in the second air channel
Projection of the part on motor cross section is disconnected from each other, and such second cooling air-flow b is in order to reach motor air intake
Mouth must be turned to repeatedly so that dust impurity etc. drops.
In above process, many times of the second cooling air-flow b steerings, most dust impurities in steering by
Dropped in inertia and stay product in fuselage, it is impossible to enter motor.The second cooling air-flow b blows over motor simultaneously
Stator outer peripheral face, also acts the effect of cooling motor stator.
In the present embodiment, motor air inlet has arrangement in the both sides of the second stop wall 19, and is formed respectively
One air channel and the terminal in the second air channel.
In the present embodiment, as it was previously stated, motor air inlet has multiple, each motor air inlet is connected
One the first air channel and second air channel, form the cooling gas of one first foregoing cooling air-flow a and second
Stream b.Its arrangement is gentle to flow away to being similar to, and only the position in fuselage circumference is different, no longer one by one
Repeat.
The a series of detailed description of those listed above is only for feasibility implementation method of the invention
Illustrate, they simultaneously are not used to limit the scope of the invention, all without departing from skill spirit of the present invention
The equivalent implementations or change made should be included within the scope of the present invention.
Claims (9)
1. a kind of electric tool, including：
Fuselage, the main body with tubular；
Handle, is connected to fuselage lower section；
Motor, is arranged in the main body, outputting rotary power；
Fuselage air inlet, is arranged on the side face of the main body, the forward position of motor；
Air outlet, is arranged on the side face of the main body, the rearward position of motor；
Cooling fan, drives rotation to generate cooling air-flow by motor；
Motor air inlet, on the front end face of the motor, it is characterised in that：
The first air channel and the second air channel are provided with the main body；
First air channel with fuselage air inlet as starting point, by motor shaft upward front end face and casing
Gap between gusset, reaches motor air inlet；
Second air channel with fuselage air inlet as starting point, by motor outer wall radially and the inwall of casing
Between gap, lead to motor air inlet.
2. electric tool according to claim 1, it is characterised in that：The fuselage air inlet includes shape
Into in the opening in main body, and under opening, towards the paravent of the opening, the paravent
Both sides form the first air-inlet window and the second air-inlet window positioned opposite, and first air-inlet window is externally towards motor
Rear, forms the starting point in the first air channel；Second air-inlet window externally towards motor front, forms the second wind
The starting point in road.
3. electric tool according to claim 2, it is characterised in that：The front side of first air-inlet window
The first stop wall, the basic radial arrangement along motor of first stop wall are disposed with direction, in casing.
4. electric tool according to claim 2, it is characterised in that：The end in first air channel,
The second stop wall is disposed with casing, second stop wall is basically perpendicular to the radial arrangement of motor.
5. electric tool according to claim 4, it is characterised in that：The both sides of second stop wall
Motor air inlet is respectively provided with, the terminal in the first air channel and the second air channel is formed respectively.
6. electric tool according to claim 2, it is characterised in that：
Corresponding to the anterior location arrangements of motor on the casing inner wall has motor positioning bar, the motor positioning
Muscle abuts the outer wall of motor, and has the first breach and the second breach in the circumferential；First breach is abutted
And the fuselage air inlet is connected, second breach is abutted and connects the motor air inlet；Described first
Between being disposed between breach and the second breach between foregoing motor outer wall radially and the inwall of casing
Gap.
7. electric tool according to claim 6, it is characterised in that：First breach, second lack
Projection of the part of mouth and motor air inlet in the second air channel on motor cross section is disconnected from each other.
8. electric tool according to claim 6, it is characterised in that the end in second air channel,
The 3rd stop wall is formed in casing, the 3rd stop wall faces the motor air inlet and second breach.
9. the electric tool according to foregoing any claim, it is characterised in that：The fuselage air intake
The quantity of mouth is multiple, along the circumferentially-spaced arrangement of casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510902197.2A CN106856362A (en) | 2015-12-09 | 2015-12-09 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510902197.2A CN106856362A (en) | 2015-12-09 | 2015-12-09 | Electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106856362A true CN106856362A (en) | 2017-06-16 |
Family
ID=59132098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510902197.2A Pending CN106856362A (en) | 2015-12-09 | 2015-12-09 | Electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106856362A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017119338A (en) * | 2015-12-29 | 2017-07-06 | 日立工機株式会社 | Electric tool |
| WO2020064005A1 (en) * | 2018-09-30 | 2020-04-02 | 苏州宝时得电动工具有限公司 | Hand-held power tool |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941200A (en) * | 2009-07-03 | 2011-01-12 | 德昌电机(深圳)有限公司 | Electric tool and motor assembly thereof |
| CN204800591U (en) * | 2015-05-12 | 2015-11-25 | 苏州宝时得电动工具有限公司 | Take cooling system's electric tool |
| JP2015217504A (en) * | 2014-05-21 | 2015-12-07 | Ｔｏｎｅ株式会社 | Power tool with air-cooling mechanism |
-
2015
- 2015-12-09 CN CN201510902197.2A patent/CN106856362A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941200A (en) * | 2009-07-03 | 2011-01-12 | 德昌电机(深圳)有限公司 | Electric tool and motor assembly thereof |
| JP2015217504A (en) * | 2014-05-21 | 2015-12-07 | Ｔｏｎｅ株式会社 | Power tool with air-cooling mechanism |
| CN204800591U (en) * | 2015-05-12 | 2015-11-25 | 苏州宝时得电动工具有限公司 | Take cooling system's electric tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017119338A (en) * | 2015-12-29 | 2017-07-06 | 日立工機株式会社 | Electric tool |
| WO2020064005A1 (en) * | 2018-09-30 | 2020-04-02 | 苏州宝时得电动工具有限公司 | Hand-held power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170616 |