CN106921263B - Hand-held electric tool - Google Patents
Hand-held electric tool Download PDFInfo
- Publication number
- CN106921263B CN106921263B CN201510996457.7A CN201510996457A CN106921263B CN 106921263 B CN106921263 B CN 106921263B CN 201510996457 A CN201510996457 A CN 201510996457A CN 106921263 B CN106921263 B CN 106921263B
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- Prior art keywords
- power
- motor
- electric tool
- hand held
- held electric
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/416—Flexible line cutters
- A01D34/4168—Constructional details of the flexible lines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/08—Other tools for pruning, branching or delimbing standing trees
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/08—Other tools for pruning, branching or delimbing standing trees
- A01G3/085—Motor-driven saws for pruning or branching
- A01G3/086—Chain saws
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Portable Power Tools In General (AREA)
- Harvester Elements (AREA)
Abstract
The invention discloses a hand-held electric tool comprising: a working device for performing a function of the hand-held power tool; the power device is used for providing power for the working device; the connecting device is used for connecting the working device and the power device; the power device comprises: a motor for generating power; a power housing for housing the motor; the transmission mechanism is used for transmitting power generated by the motor; a circuit board for controlling the motor; the motor includes or is connected with: a fan which can be driven by the motor to rotate; the power shell is provided with: the air inlet can enable air flow to enter the power shell when the fan rotates; the air outlet can enable air flow to be discharged out of the power shell when the fan rotates; when the motor drives the fan to rotate, the air flow entering from the air inlet and discharged from the air outlet sequentially flows through the circuit board, the transmission mechanism and the motor. The handheld electric tool disclosed by the invention has an excellent cooling effect.
Description
Technical field
The present invention relates to a kind of hand held electric tools.
Background technique
Hand-hold power tool includes equipment and power device.Power device provides power for equipment.When dynamic
When power device is using electric power as energy source, such hand-hold power tool can also be referred to as hand held electric tool.Common hand
The formula power tool of holding has: pruner, grass-mowing machine, bar saw etc..
It is the power device for capableing of source with electric power comprising have motor, circuit board and transmission device.Traditional power device
The layout of its motor, circuit board and transmission device is unreasonable, and the heat for causing motor and circuit board to generate during the work time is not
It can shed in time, be easy initiation failure and damage.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of hand-helds with compared with high cooling efficiency
Electric tool.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of hand held electric tool includes: equipment, for executing the function of hand held electric tool；Power dress
It sets, for providing power for equipment；Attachment device, for connecting equipment and power device；Power device includes: electricity
Machine, for generating power；Power shell, for accommodating motor；Transmission mechanism is used for transmission the power of motor generation；Circuit board,
For controlling motor；Motor includes or is connected with: fan can be motor driven and rotate；Power shell is equipped with: air inlet, energy
Power shell is allowed airflow into fan rotation；Air outlet can make air-flow that power shell be discharged when fan rotates；In motor
Air-flow when driving fan rotates, entered by air inlet, being discharged by air outlet is followed by circuit board, transmission mechanism and motor.
Further, power shell has a split, and power shell is at least partly symmetrical about split, air inlet
It is set to the side of split.
Further, power shell is at least formed with air outlet and air inlet in the two sides of circuit board.
Further, power shell is at least formed with air inlet and air outlet in the ipsilateral of circuit board.
Further, air outlet is set to the two sides of split.
Further, the position of air inlet and the position of circuit board are correspondingly arranged.
Further, the position of air outlet and the position of fan are correspondingly arranged.
Further, hand held electric tool further include: operating handle, for for user's operation hand held electric tool；
Operating handle is arranged between power device and equipment.
Further, attachment device includes: connecting tube, is used for connecting power device and operating handle；Output shaft, for defeated
The power of motor out；Equipment includes: insertion pipe, for docking with connecting tube；Input shaft, for being docked with output shaft；Even
Adapter tube is removably connect with insertion pipe composition.
Further, hand held electric tool further include: casing bit, for being fixedly connected with the connection of pipe and insertion pipe；
Casing bit includes: casing, has opposite both ends；One end of casing is for being connected pipe, and the other end is for docking grafting
Pipe.
Another hand-hold power tool, comprising: equipment, for executing the function of hand-hold power tool；Power
Device, for providing power for equipment；Attachment device, for connecting equipment and power device；Power device includes:
Motor, for generating power；Attachment device includes: output shaft, for transmitting the power of motor；Connecting tube, for accommodating output
Axis；Equipment includes: input shaft, for docking with output shaft；Insertion pipe, for accommodating input shaft；Connecting tube and insertion pipe
Constitute dismountable connection；At least one in attachment device or equipment includes: coupling piece, in output shaft and input shaft
Between transmit torsion；Coupling piece is at least partially inserted into connecting tube or insertion pipe；One is equipped between connecting tube and insertion pipe
The rotatable support that coupling piece can be made to rotate relative to connecting tube or insertion pipe.
Further, hand-hold power tool further include: casing bit, it is detachable for constituting connecting tube and insertion pipe
Connection；Casing bit includes: casing, has opposite both ends；One end of casing is for being connected pipe, and the other end is for docking
Insertion pipe.
Further, casing is fixedly connected with connecting tube；Casing is flexibly connected with insertion pipe composition.
Further, casing bit further include: locked component exits casing for limiting insertion pipe.
Further, internal surface of sleeve pipe is formed with: casing convex ribs protrude from the inner wall of casing；Connecting tube and insertion pipe difference
Positioned at the two sides of casing convex ribs.
Further, rotatable support is arranged between connecting tube or insertion pipe and casing convex ribs.
Further, it is formed on the outside of coupling piece: limited step, for limiting the position of rotatable support；Rotation branch
Support member is arranged between limited step and casing convex ribs.
Further, coupling piece is formed with: driving groove, for being inserted into for output shaft；Inserting groove, for being inserted for input shaft
Enter；Driving groove and inserting groove are located at the opposite both ends of coupling piece.
Further, hand-hold power tool further include: operating handle, for for user's operation hand-hold power tool；
Operating handle is arranged between power device and equipment.
Further, hand-hold power tool further include: anti-abrading block；Anti- abrading block is set in power device；In hand-held
When power tool is placed vertically, anti-abrading block can prevent contact of the power device with ground.
Another hand held electric tool includes: motor and operating device；Operating device is for user's operation；Operating device packet
Include: handle housing forms the operating handle held for user；Master switch, for controlling whether motor is powered；Speed-regulating switch,
For controlling the revolving speed of motor；Master operation part, for for user's operation master switch；Operating parts is adjusted the speed, for grasping for user
Make speed-regulating switch；Operating handle is equipped with a split, and operating handle is symmetrical arranged with respect to split；Operating parts is adjusted the speed to be arranged in
The side of facet.
Further, speed regulation operating parts is slidingly attached to handle housing.
Further, handle housing is formed with: sliding support face, is used to support speed regulation operating parts and is breakked away outside handle housing
It is dynamic；Sliding support face is plane and intersects with split inclination.
Further, the lower section of operating handle is arranged in master operation part, and speed regulation operating parts is located on the side of operating handle
Side.
Further, operating device further include: safe operation part, for preventing user's accidentally touching master operation part；Insurance behaviour
Workpiece is arranged above operating handle.
Further, handle housing is also formed with: receiving portion；For accommodating speed-regulating switch；Before receiving portion and operating handle
After be arranged；Speed regulation operating parts is set to receiving portion upper side.
Further, speed regulation operating parts is set to receiving portion upper left side.
Further, safe operation part and master operation part are located at the opposite two sides of operating handle.
Further, hand held electric tool includes: equipment, for executing the function of hand held electric tool；It is dynamic
Power device, for providing power for equipment；Attachment device, for connecting equipment and power device；Power device packet
Include power shell and motor；Power shell accommodates motor.
Further, attachment device includes: connecting tube, is used for connecting power device and operating handle；Output shaft, for defeated
The power of motor out；Equipment includes: insertion pipe, for docking with connecting tube；Input shaft, for being docked with output shaft；Even
Adapter tube is removably connect with insertion pipe composition.
The invention has the beneficial effects that hand held electric tool cooling effect is excellent, cooling efficiency is high.
Detailed description of the invention
Fig. 1 shows a kind of hand-hold power tool as embodiment；
Fig. 2 is the schematic diagram of the power device in Fig. 1；
Fig. 3 is the part explosive view of the power device in Fig. 1；
Fig. 4 is the air outlet schematic diagram of the power device in Fig. 1；
Fig. 5 is the anti-abrading block scheme of installation of the power device in Fig. 1；
Fig. 6 is the schematic diagram of the operating device in Fig. 1；
Fig. 7 is that the operating device in Fig. 6 removes the schematic diagram after partial shell；
Fig. 8 is the schematic diagram at another visual angle of the operating device in Fig. 6；
Fig. 9 is the scheme of installation of the equipment and casing bit in Fig. 1；
Figure 10 is the schematic diagram of the casing bit in Fig. 1；
Figure 11 is attachment device, the partial exploded view of casing bit and equipment in Fig. 1；
Figure 12 is the partial sectional view of attachment device in Fig. 1, casing bit and equipment；
Figure 13 is the schematic diagram that equipment in Fig. 1 and casing bit are in discrete state；
Figure 14 is the schematic diagram that equipment in Fig. 1 and casing bit are in bonding state.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Hand-hold power tool 100 as shown in Figure 1 includes: equipment 10, power device 20, operating device 30, connects
Connection device 40 and casing bit 50.
Equipment 10 is used to execute the function of hand-hold power tool 100.Equipment 10 includes operation element 11.Tool
For body, as shown in Figure 1, operation element 11 is chain, hand-hold power tool 100 is bar saw.Certain operation element 11 is unlimited
It is set to chain, is also possible to play the pruning blade etc. of beat the grass rope or the execution pruning function of cutting function.
Power device 20 is that equipment 10 provides power.As shown in Fig. 2, power device 20 includes motor 21, driver
Structure 22, circuit board 23 and power shell 24.Motor 21 generates power, can be the internal combustion engine using fuel combustion as energy source,
It is also possible to the motor using electric power as energy source.Specifically, motor 21 shown in Fig. 2 is motor, when generating power by motor,
Hand-hold power tool can also be referred to as hand held electric tool.As shown in Fig. 2, hand held electric tool further include for
The battery pack 211 of motor power supply.Specifically, battery pack 211 is detachably connected to power shell 24.
Transmission mechanism 22 is used for transmission the power of motor generation.Circuit board 23 is for controlling motor.As shown in Figures 2 and 3,
Power shell 24 accommodates motor.Further, power shell 24 accommodates transmission mechanism 22 and circuit board 23, motor, transmission mechanism
22 and circuit board 23 be located in power shell 24.Transmission mechanism 22 includes transmission gear, and transmission gear is located in power shell 24.
Specifically, transmission mechanism 22 is gear-box.As shown in Figures 2 and 3, motor includes or is connected with fan 212,212 energy of fan
It is motor driven and rotates.More specifically, motor is external rotor electric machine, and fan 212 is set to one end of motor, is centrifugal
Fan.
As shown in figure 3, power shell 24 includes at least left shell 241 and right shell body 242.Left shell 241 and right shell body 242
Wrap up motor.Power shell 24 is equipped with air inlet 243 and air outlet 244a, 244b.Fan 212 rotate when, air-flow from into
Air port 243 enters power shell 24 and is discharged followed by after circuit board 23, transmission mechanism 22 and motor from air outlet 244a, 244b
Power shell 24.
As shown in Figures 1 to 4, power shell 24 has a split 101, and power shell 24 divides at least partly about in
Face 101 is symmetrical.Specifically, left shell 241 and right shell body 242 are at least partly symmetrical about split 101.Air inlet 243 is set
It is placed in the side of split 101.More specifically, air inlet 243 is arranged on left shell 241, forms air inlet by left shell 241
Mouth 243.
Power shell 24 is at least formed with air inlet 243 and air outlet 244a, 244b in the two sides of circuit board 23.It is specific and
Speech, right shell body 242 are formed with air outlet 244b.The air inlet that the air outlet 244b and left shell 241 that right shell body 242 is formed are formed
243 are located at the two sides of circuit board 23.
Power shell 24 is at least formed with air inlet 243 and air outlet 244a in the ipsilateral of circuit board 23.Specifically, left
Shell 241 is formed with air outlet 244a.Air inlet 243 of air outlet 244a and left shell 241 formation that left shell 241 is formed
In the ipsilateral of circuit board 23.
As shown in Figures 1 to 4, left shell 241 and right shell body 242 are formed with air outlet 244a, 244b.Air outlet 244a,
244b is set to the two sides of split 101.
The position of air outlet 244a, 244b and fan 212 is correspondingly arranged.Fan 212 rotation be able to drive air-flow rapidly from
Air outlet 244a, 244b discharge, cooling efficiency with higher.243 position of air inlet and the position of circuit board 23 are correspondingly arranged.
Specifically, circuit board 23 is equipped with cooling fin 231,231 protrusion of cooling fin has a radiating ribs 232, adjacent two radiating ribs 232 it
Between form heat dissipation channel.The air-flow that air inlet 243 enters enters heat dissipation channel.Convenient for rapid cooling.Air-flow passes through heat dissipation channel
After flow through transmission mechanism 22, transmission mechanism 22 is cooled down.The air-flow of cooling transmission mechanism 22 passes through motor, by air outlet
244a, 244b discharge.In operation process, circuit board 23 is the maximum element of fever, and air-flow first cools down circuit board 23,
It can be effectively reduced the temperature of circuit board 23, then air-flow is successively cooling to transmission mechanism 22 and motor.Cooling efficiency is high.
As shown in Figure 2 and Figure 5, hand-hold power tool 100 further includes anti-abrading block 25.Anti- abrading block 25 is set to power device
On 20.Specifically, on the anti-setting of abrading block 25 and power shell 24.It is when being placed with reference to mode shown in fig. 5, i.e., dynamic in hand-held
When power tool 100 is placed vertically, anti-abrading block 25 can prevent contact of the power device 20 with ground.Further, anti-abrading block 25
It can prevent battery pack 211 from ground contacting.Specifically, anti-abrading block 25 is made of rubber material.
Operating device 30 is controlled for user's operation, hand-held power tools 100.As shown in Figure 6 and Figure 7, it operates
Device 30 includes handle housing 31, master switch 32, speed-regulating switch 33, master operation part 34, speed regulation operating parts 35 and insurance behaviour
Workpiece 36.
As shown in fig. 6, handle housing 31 is formed with operating handle 311 and receiving portion 312.Operating handle 311 is held for user
It holds to operate hand held electric tool.Certainly, handle housing can also be used as with power shell and be integrally formed.The portion of power shell
Divide and is used as handle housing.
As shown in Figure 1, operating device 30 is arranged between power device 20 and equipment 10, specifically, with reference to Fig. 1
With shown in Fig. 6, operating handle 311 is arranged between power device 20 and equipment 10.As shown in Figure 6 to 8, operating handle
311 are equipped with a split 102, and operating handle 311 is symmetrical with respect to split 102.Master switch 32 is for controlling whether motor leads to
Electricity.Speed-regulating switch 33 is used to control the revolving speed of motor.Master operation part 34 is used for for user's operation master switch 32；Speed regulation operation
Part 35 is used for for user's operation speed-regulating switch 33.The side of split 102 is arranged in speed regulation operating parts 35.Specifically, speed regulation
Operating parts 35 can be slided relative to handle housing 31, be slidingly attached to handle housing 31.More specifically, 31 shape of handle housing
At there is sliding support face (not shown).Sliding support face support speed regulation operating parts 35 is in the outer Slideslip of handle housing 31.Sliding branch
Support face is plane and intersects with the inclination of split 102.
The lower section of operating handle 311 is arranged in master operation part 34.Speed regulation operating parts 35 is located on the side of operating handle 311
Side.Safe operation part 36 prevents motor from starting in the case where not being expected to for preventing user's accidentally touching master operation part 34.It protects
Dangerous operating parts 36 is located at the top of operating handle 311.
Receiving portion 312 accommodates speed-regulating switch 33, and further receiving portion 312 accommodates master switch 32.Receiving portion 312 and operation
It is arranged before and after handle 311.Speed regulation operating parts 35 is set to the upper side of receiving portion 312.Specifically, speed regulation operating parts 35 is arranged
In 312 upper left side of receiving portion.
Safe operation part 36 and master operation part 34 are located at the opposite two sides of operating handle 311.With reference to side as shown in Figure 8
Position, safe operation part 36 are located at the top of operating handle 311, and master operation part 34 is located at the lower section of operating handle 311, speed regulation behaviour
Workpiece 35 is located at the upper side of operating handle 311.User can easily be unlocked using the palm of the hand when holding operating handle 311
Then safe operation part 36 starts master operation part 34 using finger.Simultaneously, user can use index finger touching speed regulation behaviour
Workpiece 35 carries out speed control.The position of each operating parts meets ergonomics, easy to operate.
As shown in Figure 9 and Figure 10, attachment device 40 connects equipment 10 and power device 20.Specifically, connection dress
Setting 40 includes output shaft 41 and connecting tube 42.Equipment 10 includes input shaft 12 and insertion pipe 13.Output shaft 41 is for transmitting
The power of motor 21.Connecting tube 42 is for accommodating output shaft 41.Output shaft 41 is at least partially disposed in connecting tube 42.Connecting tube 42
Connecting power device 20 and operating handle 311.
Hand-hold power tool 100 further includes casing bit 50.With reference to shown in Fig. 9 to Figure 12, casing bit 50 makes to connect
Pipe 42 is detachably connected with the composition of insertion pipe 13.Casing bit 50 includes casing 51 and locked component 52.Casing 51 has opposite
Both ends；One end of casing 51 is for being connected pipe 42, and the other end is for docking insertion pipe 13.Specifically, with reference to Figure 13
Shown, casing 51 is fixedly connected with connecting tube 42；Casing 51 is flexibly connected with the composition of insertion pipe 13, and state shown in Figure 13 is
State when casing 51 is separated with insertion pipe 13, state when state, that is, casing 51 shown in Figure 14 is connect with insertion pipe 13.
As is illustrated by figs. 11 and 12,51 inner wall of casing is formed with casing convex ribs 511.The inner wall that casing convex ribs 511 protrude from casing 51 connects
Adapter tube 42 and insertion pipe 13 are located at the two sides of casing convex ribs 511.
As is illustrated by figs. 11 and 12, locked component 52 exits casing 51 for limiting insertion pipe 13.Input shaft 12 and output
Axis 41 docks.The power for exporting motor 21 is transferred to equipment 10.Insertion pipe 13 is for accommodating input shaft 12.Input shaft 12
It is at least partially disposed in insertion pipe 13.Connecting tube 42 and insertion pipe 13 constitute dismountable connection.Specifically, attachment device 40
Or at least one in equipment 10 includes coupling piece 43.Coupling piece 43 connects input shaft 12 and output shaft 41, in output shaft 41
Torsion is transmitted between input shaft 12.Coupling piece 43 is formed with driving groove 431 and inserting groove 432.Driving groove 431 is used for for output
Axis 41 is inserted into；Inserting groove 432 is used to be inserted into for input shaft 12；Driving groove 431 and inserting groove 432 are located at opposite two of coupling piece 43
End.
Coupling piece 43 is at least partially inserted into connecting tube 42 or insertion pipe 13；It is equipped between connecting tube 42 and insertion pipe 13
One rotatable support 434 that coupling piece 43 can be made to rotate relative to connecting tube 42 or insertion pipe 13.Specifically, rotatable support
434 are arranged in 42 end of connecting tube.Rotatable support 434 is arranged between connecting tube 42 or insertion pipe 13 and casing convex ribs 511.
The outside of coupling piece 43 is formed with limited step 433.Limited step 433 is used to limit the position of rotatable support 434；Rotation branch
Support member 434 is arranged between limited step 433 and casing convex ribs 511.Coupling piece 43 is fixed in rotatable support 434.Make
Obtaining coupling piece 43 has lesser shaking, and for user in installment work device 10, input shaft 12 can accurately be inserted into inserting
In slot 432.Rotatable support 434 supports coupling piece 43 and then supports input shaft 12 and output shaft 41, reduces input shaft 12 and defeated
The vibration of shaft 41 during rotation.Specifically, rotatable support 434 is bearing, more specifically it is rolling bearing.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of hand held electric tool, comprising:
Equipment, for executing the function of the hand held electric tool；
Power device, for providing power for the equipment；
Attachment device, for connecting the equipment and the power device；
Wherein,
The power device includes:
Motor, for generating power；
Power shell, for accommodating the motor；
Transmission mechanism is used for transmission the power that the motor generates；
Circuit board, for controlling the motor；
The motor includes or is connected with:
Fan can be rotated by the motor driven；
The power shell is equipped with:
Air inlet can allow airflow into the power shell when the fan rotates；
Air outlet can make air-flow that the power shell be discharged when the fan rotates；
The air-flow when fan described in the motor driven rotates, entered by the air inlet, being discharged by the air outlet is successively
Flow through the circuit board, the transmission mechanism and the motor.
2. hand held electric tool according to claim 1, it is characterised in that:
The power shell have a split, the power shell is at least partly symmetrical about the split, it is described into
Air port is set to the side of the split.
3. hand held electric tool according to claim 1, it is characterised in that:
The power shell is at least formed with the air outlet and the air inlet in the two sides of the circuit board.
4. hand held electric tool according to claim 1, it is characterised in that:
The power shell is at least formed with the air inlet and the air outlet in the ipsilateral of the circuit board.
5. hand held electric tool according to claim 2, it is characterised in that:
The air outlet is set to the two sides of the split.
6. hand held electric tool according to claim 1, it is characterised in that:
The position of the air inlet and the position of the circuit board are correspondingly arranged.
7. hand held electric tool according to claim 1, it is characterised in that:
The position of the air outlet and the position of the fan are correspondingly arranged.
8. hand held electric tool according to claim 1, it is characterised in that:
The hand held electric tool further include:
Operating handle, for for hand held electric tool described in user's operation；
The operating handle is arranged between the power device and the equipment.
9. hand held electric tool according to claim 8, it is characterised in that:
The attachment device includes:
Connecting tube, for connecting the power device and the operating handle；
Output shaft, for exporting the power of the motor；
The equipment includes:
Insertion pipe, for being docked with the connecting tube；
Input shaft, for being docked with the output shaft；
The connecting tube is removably connect with insertion pipe composition.
10. hand held electric tool according to claim 9, it is characterised in that:
The hand held electric tool further include:
Casing bit, for fixing the connection of the connecting tube Yu the insertion pipe；
Described sleeve pipe device includes:
Casing has opposite both ends；
One end of described sleeve pipe is for docking the connecting tube, and the other end is for docking the insertion pipe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996457.7A CN106921263B (en) | 2015-12-24 | 2015-12-24 | Hand-held electric tool |
| US15/258,364 US10350743B2 (en) | 2015-09-08 | 2016-09-07 | Handheld electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996457.7A CN106921263B (en) | 2015-12-24 | 2015-12-24 | Hand-held electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106921263A CN106921263A (en) | 2017-07-04 |
| CN106921263B true CN106921263B (en) | 2019-08-06 |
Family
ID=59455559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510996457.7A Active CN106921263B (en) | 2015-09-08 | 2015-12-24 | Hand-held electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106921263B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110651588B (en) * | 2018-06-28 | 2023-03-21 | 南京泉峰科技有限公司 | Electric tool |
| JP7159071B2 (en) * | 2019-02-01 | 2022-10-24 | 株式会社マキタ | electric work machine |
| CN111618796A (en) * | 2019-02-27 | 2020-09-04 | 南京德朔实业有限公司 | Long rod type electric tool |
| CN109746877A (en) * | 2019-03-27 | 2019-05-14 | 常州格力博有限公司 | Hand held electric tool |
| CN113305788B (en) * | 2020-02-27 | 2022-09-20 | 南京泉峰科技有限公司 | Long rod type electric tool |
| CN217428708U (en) * | 2021-04-12 | 2022-09-16 | 南京泉峰科技有限公司 | Grass trimmer |
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| JP2006296006A (en) * | 2005-04-06 | 2006-10-26 | Mitsubishi Electric Corp | Cooler for motor |
| CN103004486A (en) * | 2011-09-21 | 2013-04-03 | 苏州宝时得电动工具有限公司 | Pruning shears |
| CN103448036A (en) * | 2013-09-06 | 2013-12-18 | 常州格力博有限公司 | Rear power tool |
| CN103843597A (en) * | 2012-12-05 | 2014-06-11 | 苏州宝时得电动工具有限公司 | Pruning shears |
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| JP2005066785A (en) * | 2003-08-26 | 2005-03-17 | Matsushita Electric Works Ltd | Power tool |
| CN202825769U (en) * | 2012-09-27 | 2013-03-27 | 宁波伊司达工具有限公司 | Multi-work-head connecting device of electric tool operating arm |
| DE102012221748A1 (en) * | 2012-11-28 | 2014-05-28 | Robert Bosch Gmbh | Hand tool |
| EP2875905B1 (en) * | 2013-11-21 | 2016-10-05 | Robert Bosch Gmbh | Switching device for garden tools |
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| JP2006296006A (en) * | 2005-04-06 | 2006-10-26 | Mitsubishi Electric Corp | Cooler for motor |
| CN103004486A (en) * | 2011-09-21 | 2013-04-03 | 苏州宝时得电动工具有限公司 | Pruning shears |
| CN103843597A (en) * | 2012-12-05 | 2014-06-11 | 苏州宝时得电动工具有限公司 | Pruning shears |
| CN103448036A (en) * | 2013-09-06 | 2013-12-18 | 常州格力博有限公司 | Rear power tool |
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