CN207354879U - A kind of grass trimmer - Google Patents
A kind of grass trimmer Download PDFInfo
- Publication number
- CN207354879U CN207354879U CN201721152603.9U CN201721152603U CN207354879U CN 207354879 U CN207354879 U CN 207354879U CN 201721152603 U CN201721152603 U CN 201721152603U CN 207354879 U CN207354879 U CN 207354879U
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- CN
- China
- Prior art keywords
- heat dissipation
- motor
- battery pack
- grass trimmer
- dissipation cavity
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Abstract
The utility model discloses a kind of grass trimmer, including main casing, cutting chamber and motor fan housing are provided with main casing, motor wind chamber is formed in motor fan housing, motor is connected with motor fan housing, fan blade is connected with the output shaft of motor, base and power supply unit are connected with motor fan housing, the first heat dissipation cavity is formed between base and power supply unit, circuit board is provided with first heat dissipation cavity, first ventilation hole of several first heat dissipation cavities of connection and the external world is provided with base and connects the second ventilation hole of the first heat dissipation cavity and motor wind chamber, the second heat dissipation cavity connected with the first heat dissipation cavity is provided with power supply unit；The utility model forms a heat dissipation channel by the first heat dissipation cavity of the second ventilation hole, third venting hole and motor fan housing, the second heat dissipation cavity, motor wind chamber and cutting chamber, fan blade is to heat dissipation channel exhausting, gas radiates all components from the first ventilation hole into heat dissipation channel, then it is discharged, good heat dissipation effect.
Description
Technical field
The utility model is specifically related to a kind of grass trimmer.
Background technology
At present, power-operated mower is in order to enable battery pack and dust-proof, the waterproof of circuit board, it usually needs in battery pack and electricity
The top of road plate sets protective cover, plays the role of protection element, still, power-operated mower at work, battery pack, circuit board
Substantial amounts of heat can be produced with motor, and is gathered in protective cover, heat is assembled for a long time, and the electronics such as battery pack can be caused first
Device is abnormal, and motor works in improper environment and can reduce the service life for a long time.
Existing power-operated mower sets a heat dissipation dress to radiate near each electronic component for needing to radiate
Put, radiator is excessive, improves the production cost of power-operated mower, while excessive radiator increases power-operated mower
Volume so that power-operated mower is more heavy, inconvenient to use.
The existing grass trimmer equipped with battery, when dead battery, it is necessary to shut down, dismounting battery is replaced, and is reduced
The work efficiency of grass trimmer.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of grass trimmer of good heat dissipation effect.
In order to solve the above technical problems, the utility model adopts the following technical solution：A kind of grass trimmer, including main casing,
It is provided with cutting chamber on main casing, cutting intracavitary is provided with cutting blade, is provided with motor fan housing on main casing, in motor fan housing
Formed and cut the motor wind chamber that connects of chamber, motor is connected with motor fan housing, be connected with the output shaft of motor and cutter
The co-rotational fan blade of piece, is connected with base and power supply unit on motor fan housing, and first is formed between base and power supply unit and is dissipated
Hot chamber, is provided with circuit board in the first heat dissipation cavity, several first heat dissipation cavities of connection and extraneous first logical are provided with base
Air holes and the second ventilation hole of the first heat dissipation cavity of connection and motor wind chamber, are provided with power supply unit and are connected with the first heat dissipation cavity
The second heat dissipation cavity.
Further, power supply unit includes battery pack support base, protective cover and the position of the second heat dissipation cavity is formed with support base
Battery pack in the second heat dissipation cavity, several first heat dissipation cavities of connection and the second heat dissipation cavity are provided with battery pack support base
Third venting hole.
Further, two Battery pack bag mounting grooves are symmetrically arranged with battery pack support base, in two Battery pack bag mounting grooves
Battery pack work alternatively.
Further, being provided with the symmetrical shaft position of two Battery pack bag mounting grooves prevents the support of play above and below battery
Plate, protective cover are provided with two, and two protective covers are respectively hinged at the both sides of support plate.
Further, plug connector is provided with base, is provided with battery pack support base and the matched grafting of plug connector
Hole.
Further, the bottom of motor fan housing is provided with flange, and multiple connection cutting chambers and the external world are provided with flange
4th ventilation hole.
Further, the inner wall of motor fan housing is vertically arranged with multiple protrusions through motor fan housing upper and lower ends.
Further, fan blade include bottom plate, the casing being socketed with the output shaft of motor and be connected to plate upper surface around
Casing is in several flabellums of divergent shape distribution.
Further, the bottom of bottom plate is provided with positioning plate, is provided with positioning plate and the matched cutting of cutting blade
Groove, cutting blade are fixed by screws in cutting groove.
Further, several second ventilation holes are arranged in honeycomb and positioned at the lower sections of circuit board.
Compared with prior art, the beneficial effects of the utility model are：
1st, when grass trimmer works, power on, electrical power, the output shaft of motor, which rotates, to be driven fan blade and consolidate with fan blade
The cutting blade being scheduled on together rotates, and the pressure for cutting intracavitary is more than ambient pressure, and formation external and internal pressure is poor, and cutting blade rotates
The green grass of cutting intracavitary is cut into, the green grass then cut down collects grass since inside and outside differential pressure is discharged into from the outlet of main casing
In bag；The fan blade rotated at the same time plays pumping wind action, and ambient atmos are after the first ventilation hole is drawn into the first heat dissipation cavity, and one
Portion gas is flowed in the first heat dissipation cavity and radiated to circuit board, and another part gas enters second by third venting hole
Heat dissipation cavity radiates the component in the second heat dissipation cavity, and then gas enters motor wind intracavitary to motor from the second ventilation hole
Radiate, last gas is drawn into cutting intracavitary from motor wind chamber and discharges cutting chamber, passes through the second ventilation hole, third venting
Hole and the design of motor fan housing so that it is logical that the first heat dissipation cavity, the second heat dissipation cavity, motor wind chamber and cutting chamber form a heat dissipation
Road, the fan blade for cutting the rotation in chamber enter heat dissipation channel to heat dissipation channel exhausting, gas from the first ventilation hole, can be logical to radiating
All components in road radiate, and the gas into grass trimmer is discharged after radiating to each component, is radiated
Effect is good, without being separately provided radiator near each component, reduces the volume of grass trimmer, reduces the production of grass trimmer
Cost.
2nd, grass trimmer is powered by battery pack so that grass trimmer from power cord limitation, movement it is more convenient,
Gas is entered in the second heat dissipation cavity by third venting hole, is radiated to the battery pack in the second heat dissipation cavity, is prevented battery pack
Cross the power supply of heat affecting battery pack.
3rd, when a Battery pack bag electricity can not continue to the work of grass trimmer, grass trimmer can automatically switch to another group
Battery pack is powered grass trimmer, without stopping the operation of grass trimmer, improves the work efficiency of grass trimmer.
4th, when grass trimmer is run, the lower surface of support plate prop up the upper surface in the vertical direction of battery pack to battery pack into
Row is spacing, and the side of protective cover and battery pack, which offsets, in the horizontal direction to carry out battery pack spacing, prevents battery pack from mowing
When machine is run, it is moved because of the vibrations of grass trimmer and comes off from battery pack limiting slot and influence the stability of power supply, when
When a certain Battery pack bag not enough power supply needs replacing, the protective cover for being hinged on support plate side is opened, exposes battery pack, by battery
Bag extraction from battery pack mounting groove is inserted into fully charged battery, then covers protective cover, during which another Battery pack
Bag continues to power under the protection of protective cover, replaces convenient and simple.
5th, plug connector is provided with base, is provided with battery pack support base and the matched spliced eye of plug connector, installation
When, spliced eye is engaged with plug connector, and while the battery pack support base on to base carries out spacing, plug connector has the bottom of to
The effect of fool proof, prevents that battery pack support base is anti-loaded during seat assembling battery pack support base.
6th, when the fan blade for cutting the rotation in chamber carries out exhausting to cutting chamber and motor wind chamber, gas is from the 4th ventilation hole
Into cutting chamber, increase cutting chamber and extraneous pressure difference so that green grass that cutting intracavitary is cut off is more enough to be more prone to be discharged
Chamber is cut, fills collection straw bag.
7th, by setting the protrusion through motor fan housing side wall on the inner wall of motor fan housing, increase cutting chamber with it is extraneous
Pressure difference so that the green grass cut off of cutting intracavitary is more enough to be more prone to be discharged cutting chamber, fills collection straw bag.
8th, by by fan blade be arranged to bottom plate, the casing being socketed with the output shaft of motor and be connected to plate upper surface around
Casing in several flabellums of divergent shape distribution structure so that for fan blade while exhausting, bottom plate is to the green grass of lower section and upper
The flabellum of side plays the role of separation, and bottom plate can prevent the green grass that cutting intracavitary is cut from entering in fan blade so that fan blade exists
While exhausting effect is good, cleaning is kept, without clearing up fan blade, reduces maintenance cost.
9th, when installing fan blade and cutting blade, only cutting blade need to be embedded in cutting groove and uses screw-driving again, pacified
It is simple to fill polyvinyl chloride, without being positioned to cutting blade, improves efficiency of assembling, and cutting blade and the bottom plate of fan blade bottom
It is connected by screw, can be individually replaced if cutting blade or fan blade are damaged, reduces maintenance cost.
10th, the second ventilation hole is arranged in honeycomb and positioned at the lower section of circuit board, and honey comb like second ventilation hole is positioned at electricity
The lower section of road plate, more faster in the heat that order wire circuit plate produces, heat dissipation effect is more preferable.
Compared with prior art, the utility model is made by the design of the second ventilation hole, third venting hole and motor fan housing
Obtain the first heat dissipation cavity, the second heat dissipation cavity, motor wind chamber and cutting chamber and form a heat dissipation channel, cut the fan blade of the rotation in chamber
To heat dissipation channel exhausting, gas enters heat dissipation channel from the first ventilation hole, and all components in heat dissipation channel can be dissipated
Heat, the gas into grass trimmer are discharged after radiating to each component, good heat dissipation effect, without in each component
Radiator nearby is separately provided, reduces the volume of grass trimmer, reduces the production cost of grass trimmer.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is a kind of stereogram of grass trimmer of the utility model；
Fig. 2 is a kind of explosive view of grass trimmer of the utility model；
Fig. 3 is the schematic diagram of cutting chamber internal structure；
Fig. 4 is the schematic diagram for not installing protective cover；
Fig. 5 is a kind of partial schematic diagram of grass trimmer of the utility model.
Wherein：1st, main casing；11st, chamber is cut；12nd, fan blade；13rd, cutting blade；2nd, motor fan housing；21st, flange；211st,
Four ventilation holes；22nd, it is raised；23rd, motor wind chamber；24th, positioning column；3rd, motor；4th, base；41st, the first ventilation hole；42nd, second is logical
Air holes；43rd, plug connector；5th, circuit board；6th, battery pack support base；61st, third venting hole；62nd, spliced eye；63rd, battery pack is installed
Groove；7th, battery pack；8th, support plate；9th, protective cover.
Embodiment
A kind of embodiment of grass trimmer of the utility model is described further referring to figs. 1 to Fig. 5.
A kind of grass trimmer, including main casing 1, the cutting chamber 11 of 1 upper and lower ends of main casing is provided through on main casing 1,
Motor fan housing 2 has been connected by screw on main casing 1, the motor wind chamber 23 connected with cutting chamber 11, electricity are formed in motor fan housing 2
Motor 3 is provided with machine wind chamber 23, the inner wall of motor fan housing 2 is provided with multiple positioning columns 24, positioning column 24 and motor 3 away from electricity
One end of the output shaft of machine 3 is connected by screw, and fan blade 12 is connected with the output shaft of motor 3, and fan blade 12 includes defeated with motor 3
The vertical bottom plate of shaft, the casing being socketed with the output shaft of motor 3 and it is connected to plate upper surface and is in divergent shape around casing
Several flabellums of distribution, the bottom of bottom plate is provided with positioning plate, cutting groove is provided with positioning plate, is provided with cutting groove embedding
The cutting blade 13 being connected in cutting groove and with cutting grooved screw, fan blade 12 and cutting blade 13 are respectively positioned in cutting chamber 11,
Cutting blade 13 and fan blade 12 with motor 3 output shaft common rotation.
The bottom of motor fan housing 2 is provided with outwardly directed flange 21, and multiple connection cutting chambers 11 are provided with flange 21
With the 4th extraneous ventilation hole 211, the inner wall of motor fan housing 2 is vertically arranged with multiple upper and lower ends through motor fan housing 2
Protrusion 22, protrusion 22 are formed from the inner wall of motor fan housing 2 to 23 sunken inside of motor wind chamber.
The top of motor fan housing 2 is connected with base 4, is connected with base 4 with the first heat dissipation cavity of formation of base 4 for Denso
Put, base 4 and battery pack support base 6 clamp the circuit board 5 being located in the first heat dissipation cavity, and connection first is provided with base 4 and is dissipated
First ventilation hole 41 of hot chamber and outside air, the second of the first heat dissipation cavity of connection and motor wind chamber 23 is additionally provided with base 4
Ventilation hole 42, the second ventilation hole 42 are arranged in honeycomb and are located at positioned at the lower section of circuit board 5, honey comb like second ventilation hole 42
The lower section of circuit board 5, more faster in the heat that order wire circuit plate 5 produces, heat dissipation effect is more preferable；Power supply unit includes
Battery pack support base 6 and support base form the protective cover 9 of the second heat dissipation cavity and the battery pack 7 in the second heat dissipation cavity, battery
The third venting hole 61 of several first heat dissipation cavities of connection and the second heat dissipation cavity, the first ventilation hole 41 are provided with bag support base 6
Be in strip with third venting hole 61, the design of strip so that the first ventilation hole 41 and third venting hole 61 be not easy by
Dust blocks, and ventilation effect is more preferable, ensures the lasting heat dissipation of circuit board 5 and battery pack 7；It is symmetrical arranged on battery pack support base 6
There are a two Battery pack bag mounting grooves 63, the battery pack 7 in two Battery pack bag mounting grooves 63 works alternatively, and every group includes two battery packs
7, the support plate 8 of strip is provided with the symmetrical shaft position of two Battery pack bag mounting grooves 63,8 part of support plate is located at battery pack
The top of mounting groove 63, prevents the play about 7 of the battery pack in battery pack mounting groove 63, when grass trimmer is run, under support plate 8
The upper surface in the vertical direction that surface props up battery pack 7 carries out battery pack 7 spacing, protective cover 9 and the side phase of battery pack 7
It is spacing to being carried out in the horizontal direction to battery pack 7, prevent battery pack 7 when grass trimmer is run because the vibrations of grass trimmer and
It is moved and comes off from 7 limiting slot of battery pack and influence the stability of power supply；Protective cover 9 is provided with two, two protective covers 9
The both sides of support plate 8 are respectively hinged at, support arm is provided with protective cover 9, support arm is hinged in support plate 8 by shaft,
The outside of protective cover 9 is provided with the handle that protective cover 9 is opened for operator, and protective cover 9 is transparent configuration, person's observation easy to operation
Battery in protective cover 9, when grass trimmer is run, two battery packs 7 of 8 side of support plate are powered, when 8 side of support plate
Two 7 not enough power supplies of battery pack when, two battery packs 7 that cutting machine switches to 8 opposite side of support plate charge, pull
Handle, the protective cover 9 for opening 7 side of battery pack of not enough power supply replace that Battery pack of discharge off, during which need not
Stop the operation of grass trimmer, improve the work efficiency of grass trimmer；Plug connector 43 is provided with base 4, is set on battery pack support base 6
It is equipped with spliced eye 62 matched with plug connector 43, during installation, spliced eye 62 is engaged with plug connector 43, on to base 4
While battery pack support base 6 carries out spacing, plug connector 43 has the function that to fool proof during the assembling battery pack support base 6 of base 4,
Prevent that battery pack support base 6 is anti-loaded.
When grass trimmer works, power on, motor 3 is powered, and the output shaft of motor 3 rotates, and output shaft, which rotates, drives wind
Leaf 12 and the cutting blade 13 being fixed together with fan blade 12 rotate, and the pressure cut in chamber 11 is more than ambient pressure, in formation
External pressure force difference, cutting blade 13 rotate the green grass being cut into cutting chamber 11, and the green grass then cut down is due to interior external pressure
Difference is discharged into collection straw bag from the outlet of main casing 1；The fan blade 12 rotated at the same time plays pumping wind action, and ambient atmos are from first
After ventilation hole 41 is drawn into the first heat dissipation cavity, a part of gas is flowed in the first heat dissipation cavity and radiated to circuit board 5, separately
A part of gas radiates the battery pack 7 in the second heat dissipation cavity into the second heat dissipation cavity by third venting hole 61, then
Gas enters in motor wind chamber 23 from the second ventilation hole 42 radiates motor 3, and last gas is drawn into from motor wind chamber 23
In cutting chamber 11 and cutting chamber 11 is discharged, passes through the design of the second ventilation hole 42, third venting hole 61 and motor fan housing 2 so that
First heat dissipation cavity, the second heat dissipation cavity, motor wind chamber 23 and cutting chamber 11 form heat dissipation channel, cut the rotation in chamber 11
Fan blade 12 enters heat dissipation channel to heat dissipation channel exhausting, gas from the first ventilation hole 41, can be to all first devices in heat dissipation channel
Part radiates, and the gas into grass trimmer is discharged after radiating to each component, good heat dissipation effect, without every
A component is nearby separately provided radiator, reduces the volume of grass trimmer, reduces the production cost of grass trimmer.
By the way that fan blade 12 is arranged to bottom plate, the casing being socketed with the output shaft of motor 3 and is connected to plate upper surface
Structure around casing in several flabellums of divergent shape distribution so that fan blade 12 is while exhausting, green grass of the bottom plate to lower section
Play the role of separation with the flabellum of top, the green grass that bottom plate can prevent from being cut in cutting chamber 11 enters in fan blade 12, makes
Fan blade 12 is obtained while exhausting effect is good, keeps cleaning, without clearing up fan blade 12, reduces maintenance cost.Installing
When fan blade 12 and cutting blade 13, only cutting blade 13 need to be embedded in cutting groove uses screw-driving again, and installation process is quick
Simply, without being positioned to cutting blade 13, efficiency of assembling is improved, and cutting blade 13 and the bottom plate of 12 bottom of fan blade pass through
Screw connects, and can be individually replaced if cutting blade 13 or fan blade 12 are damaged, and reduces maintenance cost.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of grass trimmer, including main casing, cutting chamber is provided with main casing, cutting intracavitary is provided with cutting blade, it is special
Sign is：Motor fan housing is provided with the main casing, the motor wind chamber connected with cutting chamber, the electricity are formed in motor fan housing
Motor is connected with machine fan housing, is connected with the output shaft of motor and the co-rotational fan blade of cutting blade, the motor fan housing
On be connected with base and power supply unit, the first heat dissipation cavity is formed between base and power supply unit, electricity is provided with the first heat dissipation cavity
Road plate, first ventilation hole of several first heat dissipation cavities of connection and the external world is provided with the base and connects the first heat dissipation cavity
With the second ventilation hole of motor wind chamber, the second heat dissipation cavity connected with the first heat dissipation cavity is provided with the power supply unit.
A kind of 2. grass trimmer according to claim 1, it is characterised in that：The power supply unit include battery pack support base,
The protective cover of the second heat dissipation cavity and the battery pack in the second heat dissipation cavity are formed with support base, is set on the battery pack support base
It is equipped with the third venting hole of several first heat dissipation cavities of connection and the second heat dissipation cavity.
A kind of 3. grass trimmer according to claim 2, it is characterised in that：Two are symmetrically arranged with the battery pack support base
Battery pack bag mounting groove, the battery pack in two Battery pack bag mounting grooves work alternatively.
A kind of 4. grass trimmer according to claim 3, it is characterised in that：The symmetrical axle position of the two Battery packs bag mounting groove
The support plate for being provided with and preventing play above and below battery is put, the protective cover is provided with two, and two protective covers are respectively hinged at
The both sides of support plate.
5. according to a kind of grass trimmer of claim 2 to 4 any one of them, it is characterised in that：Grafting is provided with the base
Part, is provided with and the matched spliced eye of plug connector on the battery pack support base.
A kind of 6. grass trimmer according to any one of claims 1 to 4, it is characterised in that：The bottom of the motor fan housing is set
Flange is equipped with, multiple connection cutting chambers and the 4th extraneous ventilation hole are provided with flange.
A kind of 7. grass trimmer according to claim 6, it is characterised in that：The inner wall of the motor fan housing is vertically arranged with more
A protrusion through motor fan housing upper and lower ends.
A kind of 8. grass trimmer according to claim 1, it is characterised in that：The fan blade includes bottom plate, the output with motor
The casing and be connected to several flabellums of plate upper surface around casing in divergent shape distribution that axis is socketed.
A kind of 9. grass trimmer according to claim 8, it is characterised in that：The bottom of the bottom plate is provided with positioning plate, fixed
It is provided with the plate of position and is fixed by screws in the matched cutting groove of cutting blade, the cutting blade in cutting groove.
A kind of 10. grass trimmer according to claim 1, it is characterised in that：Several described second ventilation holes are arranged in bee
Nido and the lower section for being located at circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721152603.9U CN207354879U (en) | 2017-09-09 | 2017-09-09 | A kind of grass trimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721152603.9U CN207354879U (en) | 2017-09-09 | 2017-09-09 | A kind of grass trimmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207354879U true CN207354879U (en) | 2018-05-15 |
Family
ID=62352560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721152603.9U Active CN207354879U (en) | 2017-09-09 | 2017-09-09 | A kind of grass trimmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207354879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107593087A (en) * | 2017-09-09 | 2018-01-19 | 浙江亚特电器有限公司 | A kind of hay mover |
| WO2020143758A1 (en) * | 2019-01-11 | 2020-07-16 | 南京德朔实业有限公司 | Riding lawn mower |
-
2017
- 2017-09-09 CN CN201721152603.9U patent/CN207354879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107593087A (en) * | 2017-09-09 | 2018-01-19 | 浙江亚特电器有限公司 | A kind of hay mover |
| WO2020143758A1 (en) * | 2019-01-11 | 2020-07-16 | 南京德朔实业有限公司 | Riding lawn mower |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Yate Electric Appliance Co.,Ltd. Address before: 314100 No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. |