CN105875063B - Grass trimmer - Google Patents
Grass trimmer Download PDFInfo
- Publication number
- CN105875063B CN105875063B CN201510830749.3A CN201510830749A CN105875063B CN 105875063 B CN105875063 B CN 105875063B CN 201510830749 A CN201510830749 A CN 201510830749A CN 105875063 B CN105875063 B CN 105875063B
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- China
- Prior art keywords
- safety guard
- shell
- grass trimmer
- blade
- distance
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D75/00—Accessories for harvesters or mowers
- A01D75/20—Devices for protecting men or animals
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- 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
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/64—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle
Abstract
The present invention relates to a kind of grass trimmers comprising: shell；Safety guard is arranged outside shell；Connector, first end and second end are movably connected with safety guard and shell, so that safety guard is in first position with respect to shell；Wheel, supporing shell；Cutter device with blade；After safety guard is by external force, the relatively described first position shifts, and the minimum range of the front end of the cutting track of the front end and blade of the safety guard to shift is not more than 60 millimeters.Above-mentioned grass trimmer, when safety guard encounters barrier, shell can also be moved towards barrier direction, and the minimum range of the front end of the cutting track of the front end and blade of the safety guard is not more than 60 millimeters, and the grass near guarantee barrier or vegetation in this way can also cut away.When grass trimmer is far from barrier, can manually or automatically safe operation shield and shell relative position so that grass trimmer meets safety standard.
Description
Technical field
The present invention relates to graden machine fields, more particularly to a kind of grass trimmer.
Background technique
Grass trimmer be it is a kind of for cutting the grass on a lawn, the machine tool of vegetation etc..The cutter device of grass trimmer is arranged in shell
Lower section, cutter device is for executing cutting operation.Since the blade in cutter device is more sharp, it be easy to cause the wound to people and animals
Evil, is usually provided with safety guard outside the shell of grass trimmer, so that the inner wall of blade and safety guard in cutter device is deposited
In sufficiently large gap.But can more or less have barrier within the use scope of grass trimmer, when grass trimmer runs into barrier
When hindering object, due to, there is gap, will cause between blade and the inner wall of safety guard grass in the gap corresponding position or
Vegetation cutting is not fallen, to influence grass trimmer cutting effect.
If by the smaller of the gap setting between the inner wall and blade of safety guard, although when grass trimmer runs into barrier
When, can cutting as much as possible grass or vegetation can be to people and animals in use process but since the gap of shell and blade is too small
Unnecessary injury is caused, grass trimmer can not reach the safety standard of requirement.
Summary of the invention
Based on this, it is necessary to provide grass trimmer that is a kind of while meeting cutting and safety requirements.
A kind of grass trimmer, for walking and mowing on the ground comprising: shell；Safety protective with front-end and back-end
Cover is arranged outside the shell；Connector connects the shell and the safety guard, so that the safety guard is with respect to institute
It states shell and is in first position；Wheel supports the shell；Cutter device with blade is set to below the shell, rotation
Rotor piece executes cutting operation；The first end and second end of the connector is movably connected with the safety guard and the shell
Body is that the relatively described first position of fixed point occurs with the first end of the connector after the safety guard is by external force
Offset, the minimum range of the front end and the front end of the cutting track of the blade of the safety guard to shift are little
In 60 millimeters.
Above-mentioned grass trimmer, when being arranged when outermost safety guard encounters barrier, due to the presence of connector, shell
Can also be moved towards barrier direction, relative displacement occurs between shell and safety guard, the front end of the safety guard with
The minimum range of the front end of the cutting track of blade is not more than 60 millimeters, can guarantee the grass or vegetation near barrier in this way
Also it can cut away.When grass trimmer is far from barrier, can manually or automatically safe operation shield and shell relative position,
So that grass trimmer meets safety standard.
The front end of the safety guard to shift in one of the embodiments, and the cutting track of the blade
Front end maximum distance be greater than 100 millimeters.
The front end of the safety guard to shift in one of the embodiments, and the cutting track of the blade
Front end minimum range and maximum distance between difference be greater than 30 millimeters.
Boundary line sensor is provided on the front end of the safety guard in one of the embodiments,.
The front end of safety guard when in one of the embodiments, in first position and the cutting rail of blade
The distance of mark front end is greater than 60 millimeters.
Limiting device is arranged in the safety guard or/and the shell, and the limiting device is to limit the safety protective
Relative shift between cover and the shell.Limiting device can control the relative shift between safety guard and shell,
It avoids relative shift excessive, influences the normal work of grass trimmer.
The cutting track front end of the front end of the safety guard and the blade is most in one of the embodiments,
Small distance is not more than 30 millimeters.
The connector is tension spring in one of the embodiments, and the both ends of the tension spring are separately connected the safety protective
Cover and the shell.Tension spring connects safety guard and shell, after grass trimmer is far from barrier, due to tension spring self-characteristic, tension spring
It returns to original state, safety guard is restored to initial position.
Boss is provided on the outside of the wheel in one of the embodiments, the boss is protruded towards outside.This
Sample, boss can effectively stop people, animal etc. and blade contact, improve the security performance of grass trimmer.
The grass trimmer further includes distance detection device, driving device and control unit, institute in one of the embodiments,
State distance detection device, the driving device is connect with the control device respectively, the distance detection device is arranged described
On shell or/and the safety guard, the distance detection device is to detect between the shell and the safety guard
Distance, when the distance is less than threshold value, the control device controls the driving device and rotates the grass trimmer.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is grass trimmer first state of the invention；
Structural schematic diagram when Fig. 2 is the second state of grass trimmer of the invention；
Fig. 3 is the grass trimmer forward sight structural schematic diagram of one embodiment of the present of invention；
Fig. 4 is the side structure schematic view of the grass trimmer of Fig. 3；
Fig. 5 is the structural schematic diagram of the grass trimmer of another embodiment of the present invention.
Wherein:
100. 120. shell of grass trimmer, 130. connector
140. 150. border sensor of safety guard, 160. wheel
161. boss, 180. cutter device, 181. turntable
182. blade, 183. drive motor, 190. protective device
191. idler wheel, 192. shaft, 193. blocking teeth
194. gusset
Specific embodiment
Grass trimmer be it is a kind of for cutting the grass on a lawn, the machine tool of vegetation etc..According to the difference of the walking manner of grass trimmer,
Automatically walk, passive walking or both can be divided into and the modes such as combine.
The grass trimmer walked in a manner of automatically walk below is next, and the present invention will be described in detail, please refers to Fig. 1 and Fig. 2, is this hair
The structural schematic diagram of two shape bodies of bright grass trimmer.The normal direction of travel of grass trimmer 100 herein is the front of grass trimmer, with
Rear of the opposite side in front for grass trimmer 100, the front and rear direction of the grass trimmer 100 based on definition, grass trimmer 100 also wrap
Include the arranged on left and right sides between forward and backward side.The grass trimmer 100 includes shell 120, and is supported in the wheel of 120 lower section of shell
Son 160 is connected to below shell 120 for executing the cutter device 180 and safety guard 140 of cutting operation, safety guard
140 include front-end and back-end, here, the part for being located at the front of grass trimmer is front end, one end relative to front end is rear end, peace
Full shield 140 is arranged outside shell 120, and safety guard 140 and shell 120 are connected at least one connector 130.Connector
130 keep safety guard 140 and shell 120 to be in relatively fixed position using the active force of itself, which is defined as the
One position.When safety guard 140 is in the first position relative to shell 120, the two is in suitable relative position, so that
Suitable gap is kept between the cutting track and safety guard 140 of the blade 182 of cutter device 180, thus to reach safety
Requirement.
In the present embodiment, the first end of connector 130 is flexibly connected with safety guard 140, and the second of connector 130
End is flexibly connected with shell 120.When safety guard 140 is by external force, safety guard 140 is with the first of connector 130
End shifts for fixed point relative first position, and the external force being subject to herein can be attached in grass trimmer working range or working range
For close obstacle effect in the active force of safety guard 140, these barriers can be trees, wall, stone, clod etc..?
In present embodiment, safety guard 140 can with respect to shell 120 towards a direction in the orientation such as front, back, left, right, up, down, upper and lower or
The direction that multiple orientation combine is mobile.It since grass trimmer 100 is in cutting operation, typically advances forward, is met in front
A possibility that barrier, is maximum, so, in the present embodiment, when safety guard 140 shifts, it is provided with safety protective
The minimum range of the front end of the cutting track of the front end and blade 182 of cover 140 is not more than 60 millimeters.When grass trimmer 100 exists
When work, encounter barrier in a forward direction, safety guard 140 can be mobile towards rear, the front end of safety guard 140 and
It the distance between front end of cutting track of blade 182 can be at 60 millimeters or less, it is ensured that the grass near barrier
It can be cut, if the minimum range is more than 60 millimeters, the grass near barrier will be difficult to cut to, and influence
The cutting effect on lawn.Specifically, the most narrow spacing of the front end of the cutting track of the front end of safety guard 140 and blade 182
From that can be 10,20,30,35,40,45,50,55 millimeters etc., certainly, which can be other numerical value, can basis
The size of shell 120, the specific actual conditions such as position of wheel 160 are arranged.Certainly, above-mentioned in the case where guaranteeing safety
Minimum range is the smaller the better, in the present embodiment, the front end of safety guard 140 and the cutting track front end of blade 182
Minimum range be not more than 30 millimeters.
Sometimes, when retreating, safety guard 140 is also possible to encounter barrier, safety guard 140 grass trimmer 100
It is deviated towards front.In the present embodiment, the cutting track of the front end of safety guard 140 at this time and blade 182 is most
The maximum distance of front end is greater than 100 millimeters.
In the present embodiment, for safety guard 140 when forwardly and rearwardly deviating, the distance of fore-aft travel is greater than 30 millis
Rice, i.e., between the minimum range and maximum distance of the front end of the cutting track of the front end of safety guard 140 and blade 182
Difference is greater than 30 millimeters.
In the present embodiment, it is additionally provided with boundary line sensor 150 on the front end of safety guard 140, which passes
Sensor 150 works in working range to detect the position of boundary line to control grass trimmer 100.Here, in order to accurate
Two boundary line sensors 150, the two boundary lines are arranged in the front end of safety guard 140 in the position for detecting grass trimmer 100
Sensor 150 is evenly distributed in the both sides of safety guard 140.In order to guarantee that the drive motor 183 in cutter device 180 is not right
Border sensor 150 generates interference, the front end of the safety guard 140 when in first position and the cutting track of blade 182
The distance of front end is greater than 60 millimeters, i.e., when the safety guard 140 is not by external force, border sensor 150 and blade 182
The distance of cutting track front end is greater than 60 millimeters.
Safety guard 140 and shell 120 are connected using connector 130, can be sent out between safety guard 140 and shell 120
Raw relative displacement.Referring to FIG. 1, Fig. 1 is structural schematic diagram when grass trimmer 100 is in first state, safety guard 140 is opposite
Shell 120 is in first position,.Referring now to Fig. 2, Fig. 2 is schematic diagram when grass trimmer is in the second state, in the state
Grass trimmer 100 has encountered barrier.In the state, necessarily safety guard 140 collides barrier first, grass trimmer 100 after
When the continuous movement towards barrier, barrier will certainly give 140 1 active force of safety guard, and safety guard 140 keeps existing position
It does not change, due to the presence of connector 130, shell 120 can also continue to move towards barrier.Because of cutter device
180 are arranged on shell 120, and the gap between cutter device 180 and safety guard 140 will become smaller, original cutting less than
Grass or vegetation, it will be able to be cleaned.After far from barrier, safety guard 140 can be manually or automatically restored to just
Near position or position when beginning state, the requirement of security protection can be obtained again in this way.Certainly, Fig. 2 is schematical
Show schematic diagram when barrier is encountered in the front of grass trimmer 100, when remaining position of grass trimmer 100, as left and right side or after
The positions such as side are when encountering barrier, and those skilled in the art should know the course of work of the grass trimmer 100 and foregoing descriptions
Process is similar.
In the present embodiment, connector 130 can be rigid connecting rod, and the both ends of rigid connecting rod can pass through respectively
Pin-jointed structure is connect with safety guard 140 and shell 120 respectively, to realize opposite between safety guard 140 and shell 120
Displacement, the gap between cutter device 180 and safety guard 140 becomes smaller.After grass trimmer 100 is far from barrier, need manually
Operation is so that safety guard 140 and shell 120 restore or substantially return to the position of original state.Of course, it is possible to connect rigidly
An elastic element is arranged in the junction of extension bar and safety guard 140 or shell 120, when by active force, elastic element hair
Raw deformation, occurs relative displacement between safety guard 140 and shell 120；And when active force once cancelling, which restores
To original state, one active force of rigid connecting rod is given, so that safety guard 140 and shell 120 restore or substantially return to automatically
Relative position in original state, without being operated manually.
In the present embodiment, connector 130 can also be tension spring, the both ends of tension spring respectively with safety guard 140 and shell
Body 120 connects.Tension spring can be fixedly connected with safety guard 140 or/and shell 120, or pass through the connection of the forms such as buckle.Peace
When full shield 140 is in first position, tension spring by the holding power of itself come support safety shield 140 so that safety guard 140
Suitable relative position is in shell 120.When grass trimmer 100 collides barrier, due to barrier and grass trimmer 100 from
Under the interaction of body, deformation occurs towards the opposite direction that grass trimmer 100 is advanced for tension spring, safety guard 140 and shell 120 it
Between relative displacement occurs, the gap between cutter device 180 and safety guard 140 becomes smaller.When grass trimmer 100 is far from barrier
Afterwards, since tension spring is no longer influenced by external force, its original state can be restored to.The work of safety guard 140 and shell 120 in tension spring
Relative position when with lower automatic recovery or substantially returning to original state, the process are automatically performed, and without external force, are improved
Labor efficiency.
The quantity of connector 130 can be arranged according to the actual situation, the connection with safety guard 140 or shell 120
Place can also be arranged according to the actual situation.It in the present embodiment, using connector 130 is below tension spring as specific example
The link position of bright connector, the quantity of tension spring can be four, which is symmetrically arranged in safety guard 140 and shell
Between body 120, one end of these tension springs is connect with the inner wall of safety guard 140, and the other end of tension spring can connect in shell 120
Outer wall on, the inside of shell 120 can also be connected to, shell 120 offers corresponding hole, to guarantee that tension spring can freely live
It is dynamic.Certainly, the quantity of tension spring can also be one, two, three, five, six etc..
Certain connector 130 can also be other structures, after only needing structure connection safety guard 140 and shell 120, peace
Relative displacement can occur between full shield 140 and shell 120.
In the present embodiment, grass trimmer 100 further includes being set in shell 120 for driving the drive of at least one wheel
Dynamic device, and the control device in shell 120, control device are connect with driving device, control the drive to control device
The dynamic mobile grass trimmer 100 of device, thus the automatically walk to realize grass trimmer 100.
In the present embodiment, grass trimmer 100 further includes limiting device, and the effect of the limiting device is for limiting safety
Relative shift between shield 140 and shell 120, to avoid the relative displacement between safety guard 140 and shell 120
Amount causes 100 internal structure of grass trimmer that unnecessary collision occurs, influences the performance of grass trimmer 100.The limiting device can be
At least one limited block.When the quantity of limited block is one, which be can be set in safety guard 140 or shell 120
On, after relative displacement occurs between safety guard 140 and shell 120, limited block can be with corresponding shell 120 or safety protective
Cover 140 is to contact, thus to prevent the displacement continued between safety guard 140 and shell 120.The quantity of limited block can also
Think more than one, these limited blocks can be provided entirely on safety guard 140 or shell 120, be come in a different direction
Limit the relative shift between safety guard 140 and shell 120；Or these limited blocks can part setting in safety protective
On cover 140, remaining is arranged on shell 120, by between the limited block on the limited block on safety guard 140 and shell 120
Interaction to limit the relative shift between safety guard 140 and shell 120.Certainly, limiting device can also for
Structures, the those skilled in the art such as integrally formed corresponding protrusion or groove are readily apparent that on safety guard 140 and shell 120
Various limiting devices, details are not described herein.
Certainly, grass trimmer 100 can also play in itself position-limiting action using both safety guard 140 and shell 120, work as peace
Full shield 140 is mutually contradicted with shell 120, thus to limit the relative displacement of the two.
In the present embodiment, it is provided with distance detection device on shell 120, the distance detection device and control device
Connection, when distance detection device receives the close information of expression safety guard 140, which controls driving device and moves
Motor mower 100.The distance detection device includes sensor, which is set on the outer wall in 120 front of shell, certain root
According to needs, the amount of sensor is settable multiple, and the outer wall at rear or left or right side in shell 120 also can be set in position
On.These sensors can be range sensor, when safety guard 140 is less than preset threshold value with a distance from range sensor
When, sensor issues information, and control device controls driving device, makes grass trimmer 100 is mobile to turn to.The distance detection device may be used also
To include buffer, sensor and buffer cooperate；When buffer knocks safety guard 140, remembered by sensor
Record, buffer and sensor play the role of safety guard 140 and the detection of 120 relative shift of shell as a result,.Sensor issues
Information, control device control driving device, make grass trimmer 100 is mobile to turn to.Certainly, distance detection device can also for other away from
Device from detection.
In the present embodiment, the quantity of wheel 160 can be three, include being located at 120 front of shell in three wheels
Single front-wheel, and a pair rear-wheel disposed in parallel positioned at 120 rear of shell, a pair of rear wheels is by being supported in shell 120
On the lower section of wheel axis connection shell 120, a pair of rear wheels is set as driving wheel in present embodiment, and front-wheel is then arranged to support
Wheel, i.e. driven wheel.Grass trimmer 100 is steadily moved by these three wheels in ground.Certainly, those skilled in the art
A pair of driving wheels in three wheels can be replaced with into front-wheel, single support wheel replaces with rear-wheel.The quantity of wheel 160 can also
Think four, include a pair of of front-wheel positioned at 120 front of shell in four wheels, and a pair positioned at 120 rear of shell is put down
The rear-wheel of row setting, a pair of rear wheels is by 120 lower section of the wheel axis connection shell that is supported on shell 120, one in present embodiment
Driving wheel is set as to rear-wheel, and front-wheel is then arranged to universal wheel.Certainly, those skilled in the art can also lead to a pair of of front-wheel
120 lower section of wheel axis connection shell being supported on shell 120 is crossed, sets driving wheel for front-wheel, and a pair of rear wheels is set as ten thousand
To wheel.Certainly, the quantity of wheel 160 can be arranged according to the actual situation, and the position of driving wheel and quantity can also be according to realities
Border situation is arranged.
Fig. 3 or Fig. 5 is please referred to, in the present embodiment, the outside of wheel 160 is provided with boss 161,161 court of boss
It protrudes outward.Setting boss 161 can effectively prevent operator on wheel 160 or other staff are not intended to protrude into grass trimmer
When 100 inside, which can contradict the hand protruded into or foot etc., to further promote safety.
Grass trimmer 100 installs DC power supply in shell 120, exists usually in the form of battery pack, such as lead can be used
The (not shown)s such as sour battery, nickel-cadmium cell, lithium battery.
Cutter device 180 includes turntable 181, is pivotally connected to multiple blades 182 of turntable 181, and turn for driving
The cutting drive motor 183 that disk 181 rotates, turntable 181 are connected to the drive motor of cutting drive motor 183 without relative rotation
On axis.Its turntable 181 be arranged to it is discoid, blade 182 include at least two along turntable 181, blade 182 is diametrically set,
It can also be along the circumferentially equidistant multiple blades 182 from setting of turntable 181.
Please continue to refer to Fig. 1 and Fig. 2, in the present embodiment, protection is provided with below 140 periphery of safety guard
Device 190, protective device 190 are can have block piece made of metal or plastics etc..It is suitable to be arranged between protective device 190
Spacing and ground clearance cause unnecessary injury to stop the foot of operator to put in the lower section of grass trimmer 100.Certainly, prevent
Protection unit 190 also can be set on shell 120, or both and can be set.In the present embodiment, pacify to meet
The highest distance on rule standard, protective device 190 and ground is 30 millimeters.Protection dress is described below by way of two specific embodiments
Set 190.
Fig. 3 and Fig. 4 are please referred to, Fig. 3, Fig. 4 are the structural schematic diagram of the different angle of the grass trimmer 100 of one embodiment,
Protective device 190 includes idler wheel 191, shaft 192, and the both ends of shaft 192 are connect with safety guard 140, and shaft 192 can also be set
It sets on shell 120, shaft 192 wears idler wheel 191, and idler wheel 191 can be rotated around shaft 192.In the present embodiment, it rolls
Wheel 191 includes the blocking teeth 193 of multiple radially outward radiation, and direction extends these blocking teeths 193 in the axial direction, is formed in
The longer idler wheel of axial length, so that playing protective action in a wider scope.Idler wheel 191 can be with 140 phase of safety guard
Shell 120 is subjected to displacement and is changed at a distance from ground, in the present embodiment, gives 191 periphery of idler wheel and ground most
High distance is 30 millimeters.After being provided with idler wheel 191, shaft 192 etc. on grass trimmer 100, when operator or other people hand, foot
Etc. touching blocking teeth 193, idler wheel 191 can rotate, these blocking teeths 193 can further stop hand, foot etc. close to knife
Piece 182.Certainly, the shorter idler wheel 191 of multiple axial lengths can be set in shaft 192, can be set between these idler wheels 191
Suitable distance is set, makes to go smoothly, foot is not easy to protrude into the bottom of grass trimmer 100.The idler wheel of idler wheel 191 or other forms,
The idler wheel that such as outer surface is curved surface stops hand, foot etc. further as long as these idler wheels can keep suitable distance with ground
Protrude into the bottom of grass trimmer 100.It is the structural representation of the grass trimmer 100 of another embodiment referring now to Fig. 5, Fig. 5
Figure.The periphery of 140 lower section of safety guard is provided with several gussets 194, these gussets 194 also can be set in shell 120
Lower section, gusset 194 can be the block piece made of metal or plastics etc..Gusset 194 can be the blocking of a wider width
Part, to stop hand, foot etc. to protrude into the bottom of grass trimmer 100 in a wider scope.In the present embodiment, protective device 190
In include at least two gussets 194, suitable spacing and ground clearance are set between these gussets 194, to stop to operate
Hand, the foot of person put in the lower section of grass trimmer 100, cause unnecessary injury.In the present embodiment, between gusset 194
Away from being up to 40 millimeters, also, when relative displacement occurs for safety guard 140 and shell 120, the highest of gusset 194 and ground
Distance is 35 millimeters, to meet safety, so that foot, finger or virgin arm etc. are not easy to protrude into grass trimmer 100 and connect with blade 182
Touching.
Certainly it will be appreciated by persons skilled in the art that grass trimmer can also combine for automatically walk and passive walking
, which further includes clutch, and clutch is connected to the wheel 160 and driving device of driving wheel, clutch
It is electrically connected with control device.The both ends of clutch are separately connected driving shaft and driven shaft, and control device can control clutch
Structure.When grass trimmer needs passive walking, control device controls clutch, so that clutch separates, such wheel 160 is not
Mechanism controls are driven, passive walking may be implemented.Certainly, grass trimmer can also be the grass trimmer of passive walking, the grass trimmer
There is no including driving device and control device, it is provided with handrail on the safety guard of the grass trimmer, which is used for operator
It holds, the power for giving grass trimmer in a manual manner to walk.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of grass trimmer, for walking and mowing on the ground, comprising:
Shell；
Safety guard with front-end and back-end is arranged outside the shell；
Connector connects the shell and the safety guard, so that the relatively described shell of the safety guard is in first
It sets；
Wheel supports the shell；
Cutter device with blade is set to below the shell, and rotating blade executes cutting operation；
It is characterized in that, the first end and second end of the connector is movably connected with the safety guard and the shell,
It is that the relatively described first position of fixed point occurs partially with the first end of the connector after the safety guard is by external force
It moves, the minimum range of the front end and the front end of the cutting track of the blade of the safety guard to shift is not more than
60 millimeters.
2. grass trimmer according to claim 1, which is characterized in that the front end of the safety guard to shift and institute
The maximum distance for stating the front end of the cutting track of blade is greater than 100 millimeters.
3. grass trimmer according to claim 1, which is characterized in that the front end of the safety guard to shift and institute
The difference stated between the minimum range and maximum distance of the front end of the cutting track of blade is greater than 30 millimeters.
4. grass trimmer according to claim 1, which is characterized in that be provided with boundary line biography on the front end of the safety guard
Sensor.
5. grass trimmer according to claim 4, which is characterized in that safety guard when in first position most before
End is greater than 60 millimeters at a distance from the cutting track front end of blade.
6. grass trimmer according to claim 1, which is characterized in that the safety guard or/and shell setting limit
Device, the limiting device is to limit the relative shift between the safety guard and the shell.
7. grass trimmer according to claim 1, which is characterized in that the front end of the safety guard to shift and institute
The minimum range of the cutting track front end of blade is stated no more than 30 millimeters.
8. grass trimmer according to claim 1, which is characterized in that the connector is tension spring, the both ends point of the tension spring
The safety guard and the shell are not connected.
9. grass trimmer according to claim 1, which is characterized in that be provided with boss, the boss on the outside of the wheel
It is protruded towards outside.
10. grass trimmer according to claim 1, which is characterized in that the grass trimmer further includes distance detection device, driving
Device and control device, the distance detection device, the driving device are connect with the control device respectively, the distance inspection
It surveys device to be arranged on the shell or/and the safety guard, the distance detection device is to detect the shell and institute
The distance between safety guard is stated, when the distance of distance detection device detection is less than threshold value, the control device control
The driving device turns to so that the grass trimmer is mobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/073618 WO2016131399A1 (en) | 2015-02-16 | 2016-02-05 | Automatic walking device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015100851639 | 2015-02-17 | ||
| CN201510085163 | 2015-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105875063A CN105875063A (en) | 2016-08-24 |
| CN105875063B true CN105875063B (en) | 2019-02-19 |
Family
ID=57002845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510830749.3A Active CN105875063B (en) | 2015-02-16 | 2015-11-25 | Grass trimmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105875063B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133758A1 (en) * | 2017-01-19 | 2018-07-26 | 苏州科瓴精密机械科技有限公司 | Robotic lawn mower |
| CN107711081B (en) * | 2017-11-15 | 2023-10-03 | 苏州科瓴精密机械科技有限公司 | Robot and mower |
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