CN208227714U - Grass trimmer and its power drive system - Google Patents
Grass trimmer and its power drive system Download PDFInfo
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- CN208227714U CN208227714U CN201820324998.4U CN201820324998U CN208227714U CN 208227714 U CN208227714 U CN 208227714U CN 201820324998 U CN201820324998 U CN 201820324998U CN 208227714 U CN208227714 U CN 208227714U
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Abstract
The utility model relates to a kind of grass trimmer and its power drive system, grass trimmer includes ontology, cutter and power drive system, and power drive system includes driving mechanism；First transmission mechanism, have at least one first link arm, first link arm both ends respectively in cutter the first cutter and the second cutter be directly or indirectly rotatablely connected；Second transmission mechanism is configured to be driven by driving mechanism to drive at least one first link arm to move, and then drives and move reciprocatingly at least the first cutter relative to the second cutter, to carry out cutting work.Above-mentioned power drive system, by at least one first link arm simultaneously in cutter the first cutter and the second cutter be rotatablely connected, contact position is rolling friction, avoid sliding friction using traditional guidance set and caused, force of rolling friction is less than force of sliding friction, so contact wear and transmission loss can be reduced, noise can be also reduced, is prolonged the service life.
Description
Technical field
The utility model relates to cutter devices, more particularly to grass trimmer and its power drive system.
Background technique
Grass trimmer mainly includes reciprocating and rotary two class, and shuttle low mower is due to its low cost and application is wider.
Traditional shuttle low mower generally includes moving knife, stationary knife, guidance set and transmission mechanism, and wherein guidance set is arranged in stationary knife
On moving knife comprising guide groove and guide post/guide pad, guide post/being capable of opposite sliding between guide pad and guide groove.It is dynamic
Knife does the reciprocating motion relative to stationary knife under the action of transmission mechanism and guidance set, to realize shearing work.Due to leading
It is sliding friction to column/between guide pad and guide groove, frictional force is larger, has noise and energy consumption is high, be prone to wear and reduce and cut
The service life of cutter.
Utility model content
Based on this, it is necessary to for the above at least one technical problem, provide a kind of grass trimmer and its power drive system.
A kind of grass trimmer, comprising:
Ontology；
Cutter has the first cutter and the second cutter that can be done relatively reciprocating motion, for executing cutting work；
Power drive system is arranged on the body, and is configured to drive in the cutter that at least the first cutter is opposite
It moves reciprocatingly in the second cutter；
Wherein, the power drive system includes:
Driving mechanism, to provide driving force；
First transmission mechanism has at least one first link arm, and first link arm includes the first end being oppositely arranged
And the second end, the first end and first cutter are rotatablely connected, the second end and second cutter are direct
Or it is rotatablely connected indirectly；
Second transmission mechanism is configured to be driven by the driving mechanism to drive at least one described first link arm movement,
And then at least the first cutter being directly or indirectly rotatablely connected with first link arm is driven to do back and forth relative to the second cutter
Movement, to carry out cutting work.
Above-mentioned power drive system, by least one first link arm simultaneously with the first cutter and the second knife in cutter
Tool rotation connection, contact position is rolling friction, avoids sliding friction using traditional guidance set and caused, rolling friction
Power is less than force of sliding friction can also reduce noise, prolong the service life so contact wear and transmission loss can be reduced.
Second cutter is connect by connecting plate with the second end in one of the embodiments, and described first connects
The both ends of arm pass through the first connector and the second connector and first cutter respectively and the connecting plate is rotatablely connected；
The first pivoted housing is equipped between first connector and the first end and first cutter；
The second pivoted housing is equipped between second connector and the second end and the connecting plate.
First pivoted housing and/second pivoted housing are copper sheathing or bearing in one of the embodiments,.
In one of the embodiments, first connector and second connector respectively correspond as the first pin shaft and
Second pin shaft, the both ends of first link arm by the first pin shaft and the second pin shaft respectively with first cutter and the company
Plate is hinged.
The number of first link arm is two in one of the embodiments, first cutter, connecting plate and two institutes
State the first link arm composition link mechanism；Second transmission mechanism is connect with the middle part of the first link arm described at least one.
The both ends of first link arm are distinguished by third connector and the 4th connector in one of the embodiments,
It is rotatablely connected with first cutter and second cutter；
Third pivoted housing is equipped between the third connector and the first end and first cutter；
The 4th pivoted housing is equipped between the 4th connector and the second end and second cutter；
First cutter, the second cutter and two first link arms form link mechanism.
The link mechanism is parallel four-bar linkage in one of the embodiments, and first cutter can be opposite
The linear reciprocating motion of the long axis direction along second cutter is done in second cutter.
Second transmission mechanism includes: in one of the embodiments,
Crank is configured to be driven by the driving mechanism to transmit driving force；
Rocking bar is configured to by the crank handle turns, and then drives first link arm movement connecting with the rocking bar.
The crank is eccentric wheel in one of the embodiments, when the eccentric wheel rotates a circle, in cutter the
One cutter just moves back and forth a cycle by driving.
The driving mechanism includes: in one of the embodiments,
Motor；
Reduction gearbox assembly is configured to the driving force of the motor passing to the crank.
The power drive system in one of the embodiments, further include:
Support frame is configured as the driving mechanism and provides support, and support frame as described above is set on the cutter.
The utility model also provides a kind of power drive system, comprising:
Driving mechanism, to provide driving force；
First transmission mechanism has at least one first link arm, and first link arm includes the first end being oppositely arranged
And the second end, the first end are directly or indirectly rotatablely connected with the first cutter in cutter, the second end
It is directly or indirectly rotatablely connected with the second cutter in cutter；
Second transmission mechanism is configured to be driven by driving mechanism to drive at least one described first link arm movement, in turn
Drive moves reciprocatingly at least the first cutter that first link arm is directly or indirectly rotatablely connected relative to the second cutter,
To carry out cutting work.
Detailed description of the invention
Fig. 1 is that the powertrain of the utility model unifies the oblique view of embodiment；
Fig. 2 is the perspective view of the explosion of Fig. 1；
Fig. 3 is the top view of part body in Fig. 1；
Fig. 4 a-4d be respectively the utility model power drive system in cutting process cutter be in different operating position
When top view.
Reference numeral is as follows in figure:
100, driving mechanism 110, motor 120, reduction gearbox assembly
200, the first transmission mechanism 210, the first link arm 300, the second transmission mechanism
310, crank 320, rocking bar 400, cutter
410, the first cutter 420, the second cutter 510, the first connector
520, the second connector 530, the first pivoted housing 540, the second pivoted housing
600, connecting plate
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant
Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
It should be noted that be referred to as " being fixed on " another part when part, it can directly on another part or
There may be parts placed in the middle.When a part is considered as " connection " another part, it can be directly to another part or
Person may be simultaneously present part placed in the middle.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
Any and all combinations of one or more related listed items.
Embodiment 1
A kind of grass trimmer, including ontology, cutter 400 and the power drive system being set on ontology.
As shown in Figure 1-3, cutter 400 has the first knife that can be done relatively reciprocating motion for executing cutting work
Tool 410 and the second cutter 420, the first cutter 410 and the second cutter 420 are preferably arranged in parallel.Power drive system
Be set on cutter 400 and connect with cutter 400, and can drive in cutter 400 at least the first cutter 410 relative to
Second cutter 420 moves reciprocatingly.In the present embodiment, grass trimmer is preferably intelligent grass-removing.
With continued reference to figure, power drive system includes driving mechanism 100, the first transmission mechanism 200 and the second transmission mechanism
300.For driving mechanism 100 to provide driving force for power drive system, the first transmission mechanism 200 has at least one first company
Arm 210, the driving of 300 driven-mechanism 100 of the second transmission mechanism are driven with driving at least one first link arm 210 to move
Reciprocal fortune is done relative to the second cutter 420 at least the first cutter 410 that the first link arm 210 is directly or indirectly rotatablely connected
It is dynamic, to carry out cutting work.
In the present embodiment, the first transmission mechanism 200 has 2 the first link arms 210, and each first link arm 210 can wrap
Include the first end and the second end being oppositely arranged.Due to the first link arm 210 number be two, at this time the first cutter 410, even
Plate 600 and two the first link arms 210 constitute four-bar mechanism.
Further, first end is directly or indirectly rotatablely connected with the first cutter 410 in cutter 400, and second
End is directly or indirectly rotatablely connected with the second cutter 420 in cutter 400.
In the present embodiment, the first cutter 410 is directly rotatablely connected with first end, and the second cutter 420 passes through connecting plate 600
It is rotatablely connected with the second end.Specifically, the both ends of the first link arm 210 can be connected by the first connector 510 and second respectively
Fitting 520 and the first cutter 410 and connecting plate 600 are rotatablely connected.
By at least one first link arm 210 simultaneously with 420 turns of the first cutter 410 and the second cutter in cutter 400
Dynamic connection, contact position is rolling friction, avoids sliding friction using traditional guidance set and caused, and force of rolling friction is small
In force of sliding friction, so contact wear and transmission loss can be reduced, noise can be also reduced, extend whole device uses the longevity
Life.
In the present embodiment, the first pivoted housing can be equipped between the first connector 510 and first end and the first cutter 410
530, the second pivoted housing 540 is equipped between the second connector 520 and the second end and connecting plate 600.Specifically, the first pivoted housing 530
It is respectively sleeved on the first connector 510 and the second connector 520 with the second pivoted housing 540, the first pivoted housing 530 is respectively at this time
A connection piece 510 and the first cutter 410 are in contact, and the second pivoted housing 540 is in contact with the second end and connecting plate 600 respectively.One
In embodiment, the first pivoted housing 530 and the/the second pivoted housing 540 can be copper sheathing or bearing.So can further it be subtracted by increasing pivoted housing
The rolling friction being rotatablely connected less reduces abrasion and transmission loss.
In one embodiment, the first connector 510 and the second connector 520 respectively correspond sells for the first pin shaft and second
The both ends of axis, the first link arm 210 are hinged with the first cutter 410 and connecting plate 600 respectively by the first pin shaft and the second pin shaft.Tool
Body, it can be respectively equipped with the first through hole and second passed through for one end of the first pin shaft on first end and the first cutter 410 and lead to
The third through-hole and fourth hole passed through for one end of the second pin shaft is respectively equipped on hole, the second end and connecting plate 600.At this point,
First pin shaft passes through first through hole and the second through-hole, and the second pin shaft passes through third through-hole and fourth hole, to realize the first link arm
210 both ends are hinged with the first cutter 410 and connecting plate 600 respectively.In addition, in order to avoid cutter 400 or the first link arm 210
It shakes and is detached from cutting process, axial fastener is installed in the end of the free end of the first pin shaft and the second pin shaft, this is tight
Firmware can be common fastening nut or other tightening members.
In the present embodiment, the first link arm 210 is vertical bar shaped, and first end and the second end are the first of linear respectively
Two ends of link arm 210.
In one embodiment, aforementioned link mechanism is parallel four-bar linkage.Specifically, as shown in figure 3, defining two
The line of 410 junction of first end and the first cutter of first link arm 210 is L1, the second end of two the first link arms 210
It is L2 with the line at 420 direct or indirect connection of the second cutter.L1 is set and L2 is parallel to each other and the reciprocal fortune of L1 and cutter
Dynamic direction is consistent.So the link mechanism constituted at this time is parallel four-bar linkage.In this way, regardless of the first link arm 210
Movement can drive the first cutter 410 to do the movement along cutter theoretically vibration-direction relative to the second cutter 420.When
When first cutter 410 and the second cutter 420 are strip, the first cutter 410 can be done relative to the second cutter 420 along cutter
The linear reciprocating motion of long axis direction.
In addition, can be carried out according to the height of cutting planes accordingly certainly when aforementioned link mechanism is parallel four-bar linkage
Dynamic height is adjusted, and improves cutting efficiency and accuracy.
In the present embodiment, it as shown in Figure 1-3, the second transmission mechanism 300 includes crank 310 and rocking bar 320, is driven
The driving of mechanism 100 drives and directly or indirectly turns with the first link arm 210 to drive at least one first link arm 210 to move
At least the first cutter 410 of dynamic connection moves reciprocatingly relative to the second cutter 420, to carry out cutting work.Above-mentioned second passes
Motivation structure 300 can be connect with the middle part of at least one the first link arm 210.
Crank 310 is connect with driving mechanism 100, and driven-mechanism 100 drives to transmit driving force.In the present embodiment
In, crank 310 is eccentric wheel.In other embodiments, crank 310 can be eccentric block or eccentric rod.
320 one end of rocking bar is connect at least one first link arm 210, and the other end is connect with crank 310.Rocking bar 320 is bent
Handle 310 drives, and then drives the first link arm 210 movement connecting with rocking bar 320.In the present embodiment, rocking bar 320 and one
The connection of one link arm 210.Specifically, rocking bar 320 can be connect with the middle part of the first link arm 210, and junction can be located at first end
Between portion and the second end.The connection can be to be fastenedly connected.In this way, the more convenient movement to the first transmission mechanism 200.In addition,
In the also settable pivoted housing in hinged place, to reduce transmission mechanism in the abrasion loss of hinged place.In other embodiments, the second driver
Structure 300 may also include intermediate bar, and the both ends of intermediate bar are connect with rocking bar 320 and the first link arm 210 respectively, and rocking bar 320 can at this time
It is connect by intermediate bar with the first link arm of at least two 210, and then multiple first link arms 210 is driven to move.
In one embodiment, when crank 310 is eccentric wheel, the first knife when eccentric wheel rotates a circle, in cutter 400
Tool 410 just moves back and forth a cycle by driving.
In the present embodiment, as shown in Figure 1-3, driving mechanism 100 includes motor 110 and the deceleration connecting with motor 110
Box assembly 120.Reduction gearbox assembly 120 is connected with the crank 310 in the second transmission mechanism 300, and the driving force of motor 110 is passed
Pass the crank 310 in the second transmission mechanism 300.Motor 110 can be the motor of model commonly used in the art, reduction gearbox assembly 120
Can be gear reduction box, may include mounting rack, the cabinet being set on mounting rack, the first input shaft being set on cabinet and
First output shaft and the gear set for being set to box house.In the present embodiment, the mounting rack is mountable on connecting plate 600,
Rocking bar 320 is set between mounting rack and connecting plate 600 and passes through between mounting rack, and being equipped on mounting rack allows rocking bar 320
The space of reciprocally swinging so can guarantee normal cutting work, also may make the more compact structure of whole device.Certainly,
In other embodiments, mounting rack is mountable in other suitable positions.
First input shaft and the first output shaft are connect with the output shaft of motor and crank 310 respectively, the output shaft week of motor
To rotation, and by the gear drive of reduction gearbox assembly 120 to drive the first output shaft to rotate, and then crank 310 is driven to rotate,
Again by the second transmission mechanism 300 by the reciprocally swinging for being converted into rocking bar 320 of crank 310, then drive and rocking bar 320
The first link arm 210 movement of connection, finally drives the cutter in the cutter 400 connecting with the first link arm 210 to move reciprocatingly,
Work is cut to realize.
In the present embodiment, the first transmission mechanism 200 is identical with the quantity of the second transmission mechanism 300 and is 1.At it
In his embodiment, the quantity of the first transmission mechanism 200 and the second transmission mechanism 300 can be different, can also be multiple for other.In this way,
When the first transmission mechanism 200 and the second transmission mechanism 300 are other quantity, can be passed by the first transmission mechanism 200 and second
Motivation structure 300 controls one by one to carry out power transmitting respectively；In addition, transition connection can be carried out by increasing middleware also with reality
Existing power transmitting.
In the present embodiment, the first cutter 410 and the second cutter 420 are respectively moving knife and stationary knife, at this time the first cutter 410
Single reciprocating motion can be done with respect to the second cutter 420.The second cutter 420 is connect with ontology at this time.In another embodiment, first
Cutter 410 and the second cutter 420 can be moving knife, and the two can be driven and do relatively double reciprocating motions, the movement side of the two
To can be identical or opposite.When the direction of motion of the two is opposite, the movement velocity of the first cutter 410 and the second cutter 420 not by
Limitation.When the direction of motion of the two is identical, the first cutter 410 and the second cutter 420 should have different movement velocitys, with
It does relatively reciprocating motion so that having between the first cutter 410 and the second cutter 420.Certainly, in another embodiment, the first cutter
410 and second cutter 420 also may respectively be stationary knife and moving knife, the second cutter 420 can do single past with respect to the first cutter 410 at this time
Multiple movement.
The blade shapes of first cutter 410 and the second cutter 420 are preferably identical, and the two can be the straight line generallyd use
Shape.In other embodiments, the two can also be arc-shaped or wave or other meet the identical or different of cutting condition
Blade shapes.When two cutters are arc-shaped, power drive system is able to drive one of cutter and does relative to another cutter
Reciprocal circular motion.
In one embodiment, the first cutter 410 and 420 blade quality of the second cutter and thickness can be identical.In another reality
It applies in mode, when the first cutter 410 and the second cutter 420 respectively moving knife and stationary knife, the blade quality and thickness of moving knife are equal
Less than the blade quality and thickness of stationary knife.The friction that can be so further reduced between moving knife and stationary knife, and improve cutter 400
Overall stability, reduce noise.
In one embodiment, the first cutter 410 and at least one of phase-contact surface of the second cutter 420 are equipped with recessed
Slot.The groove can be several hollow slots, can also be blind slot.The contact area that the first blade and the second blade can so be reduced, into
And reduce the sliding friction before the first blade and the second blade.The groove may be provided at the second cutter 420 and/or the second cutter
On 420.In the present embodiment, which is arranged on the second cutter 420.
The realization cutting process of an embodiment of the present embodiment is described in detail with reference to the accompanying drawing.
As shown in Figure 1-3, motor is connect with reduction gearbox assembly 120, the first output axis connection of reduction gearbox assembly 120 is eccentric
Wheel, eccentric wheel are connect with rocking bar 320 by bearing, 2 rocker arms, connecting plate 600 and the first cutter 410 connection composition parallel―ordinal shift
Mechanism, rocking bar 320 are connect with one of them first link arm 210, and the second cutter 420 (stationary knife) is located at the first cutter 410 (moving knife)
It lower section and is connect for example, by the fastener of bolt with connecting plate 600.When motor rotation drives rocking bar 320, rocking bar by eccentric wheel
320 drive the first link arm 210, make opposite second knife of the first cutter 410 in the four-bar mechanism being made of first link arm 210 etc.
Tool 420 generates reciprocating movement, realizes cutting function.
Fig. 3 and Fig. 4 a to Fig. 4 d is in top view when different operating position for cutter in cutting process.Fig. 3 is the first knife
The initial position of tool 410.Fig. 4 a is that eccentric wheel counterclockwise movement drives rocking bar 320 mobile, rocking bar 320 push four-bar mechanism to
It moves left, the first cutter 410 is moved to the left, and the first cutter 410 is moved to leftmost position at this time.Fig. 4 b is that eccentric wheel is transported counterclockwise
Dynamic to drive rocking bar 320 mobile, rocking bar 320 pushes four-bar mechanism to move right, and the first cutter 410 moves right, and at this time first
Cutter 410 is back to initial position.Fig. 4 c is that eccentric wheel counterclockwise movement drives rocking bar 320 mobile, and rocking bar 320 pushes double leval jib machine
Structure moves right, and the first cutter 410 moves right, and the first cutter 410 is moved to least significant at this time.Fig. 4 d is the eccentric wheel inverse time
Needle movement drives rocking bar 320 mobile, and rocking bar 320 pushes four-bar mechanism to be moved to the left, and the first cutter 410 is moved to the left, at this time
First cutter 410 is back to initial position.The above eccentric wheel, which rotates a circle, makes moving knife reciprocal a cycle from left to right, realizes and cuts
Cut function.
As a kind of deformation scheme, one of first end and the first cutter 410 are equipped with the first column (not shown), wherein
It is another to be equipped with the through-hole for enabling to the first column to be inserted into.One of the second end and connecting plate 600 are equipped with the second column (not shown),
It is wherein another to be equipped with the through-hole for enabling to the second column to be inserted into.So corresponding through-hole can be inserted by the first column and the second column
In, to realize the rotation connection between the first link arm 210 and the first cutter 410 and connecting plate 600.It so can guarantee and normally cut
Work is cut, also may make the more compact structure of whole device.Certainly, in other embodiments, mounting rack is mountable at other
Suitable position.
Further, it can be equipped with pivoted housing with the first cutter 410 and 420 contact position of the second cutter on the first column outer wall, it should
Pivoted housing can be copper sheathing or bearing.The rolling that can be so reduced by the pivoted housing between the first link arm 210 and cutter 400 rubs
It wipes, is further reduced noise, service life is provided.
As a kind of deformation scheme, being different from the first link arm 210 in above embodiments is linear, in present embodiment
In, the first link arm 210 can be fold-line-shaped or arc or other suitable shapes.When the first link arm 210 is fold-line-shaped, first connects
Both ends on arm 210 can be connect with two cutters in cutter 400, at this time two the first link arms 210 and the first cutter 410
Four-bar mechanism is constituted with 600/ second cutter 420 of connecting plate.
As a kind of deformation scheme, the number of the first link arm 210 is 1.On first link arm 210 and cutter 400
First cutter 410 and the direct or indirect connection of the second cutter 420.
As another deformation scheme, the number of the first link arm 210 is 3 or multiple.At this point, connecting with the first link arm 210
The component connect can be increased or be adjusted accordingly.
As a kind of deformation scheme, cutter 400 also includes at least third cutter, and third cutter can be with the first and second cutter
It is stacked.It is connect by the first transmission mechanism 200 with several cutters in cutter 400, to control in cutter 400 extremely
Few three cutters do opposite reciprocating motion, and cutting efficiency can be improved.
As a kind of deformation scheme, first end and the second end are not limited to that two ends of the first link arm 210 are arranged in
Position.The two may be provided at the middle position of the first link arm 210, and the first link arm 210 is not limited to 400 junction of cutter at this time
Two end positions of the first link arm 210.In addition, rocking bar 320 is connected with the middle position of the first link arm 210, the interposition
Setting can be the position being arranged between first end and the second end, can be also the position of the separate first end of setting or the second end
It sets.
As a kind of deformation scheme, power drive system further includes support frame (not shown), which is driving mechanism
100 provide support, and support frame is set on cutter 400.Driving mechanism 100 can only include motor at this time, and motor can be placed in
On the support frame.Specifically, support frame is made of several support rods and support platform, and support rod is arranged on connecting plate 600, support
Platform is used to support driving mechanism 100.Matching 320 amplitude of oscillation gap of rocking bar is equipped between several support rods.
Alternatively, be not provided with connecting plate 600, the both ends of the first link arm 210 can directly with the first cutter 410
It is connected with the second cutter 420.Specifically, the both ends of the first link arm 210 can be connected by third connector (not shown) and the 4th
Fitting (not shown) is rotatablely connected with the first cutter 410 and second cutter 420 respectively.In third connector and first end
And first be equipped with third pivoted housing between cutter 410；The 4th is equipped between the 4th connector and the second end and the second cutter 420
Pivoted housing.Specifically, third pivoted housing and the 4th pivoted housing can be respectively sleeved on third connector and the 4th connector, at this time third
Pivoted housing is in contact with the first connector and the first cutter respectively, and the 4th pivoted housing is in contact with the second end and the second cutter respectively.
In one embodiment, the first pivoted housing 530 and the/the second pivoted housing 540 can be copper sheathing or bearing.It so can be into one by increasing pivoted housing
Step reduces the rolling friction of rotation connection, reduces abrasion and transmission loss.
Likewise, settable transition piece between the first cutter 410 and the first link arm 210, realizes first by the transition piece
Connection between cutter 410 and the first link arm 210.
Further, third connector and the 4th connector can be pin shaft structure.On first end and the first cutter 410 with
And on the second end and the second cutter 420, it is respectively equipped with the through-hole passed through for one end of corresponding pin shaft.At this point, each pin shaft difference
Across respective through-hole, the both ends to realize the first link arm 210 are hinged with the first cutter 410 and the second cutter 420 respectively.When
So, it is detached from order to avoid cutter 400 or the first link arm 210 shake in cutting process, in the end of the free end of pin shaft
Axial fastener is installed, which can be common fastening nut or other tightening members.Certainly, in another embodiment
In, third connector and the 4th connector can be the structure similar to above-mentioned first column and the second column, and details are not described herein.
Further, the first cutter 410, the second cutter 420 and two the first link arms 210 form link mechanism.Second passes
Rocking bar 320 in motivation structure 300 can be connected with the middle part of the first link arm 210.Particular content is similar to Example 1, herein
It repeats no more.
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.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (11)
1. a kind of grass trimmer, comprising:
Ontology；
Cutter has the first cutter and the second cutter that can be done relatively reciprocating motion, for executing cutting work；
Power drive system is arranged on the body, and is configured to drive in the cutter at least the first cutter relative to
Two cutters move reciprocatingly；
It is characterized in that, the power drive system includes:
Driving mechanism, to provide driving force；
First transmission mechanism, has at least one first link arm, and first link arm includes the first end being oppositely arranged and the
Two ends, the first end and first cutter are rotatablely connected, the second end and second cutter directly or
Ground connection rotation connection；
Second transmission mechanism is configured to be driven by the driving mechanism to drive at least one described first link arm movement, in turn
Drive moves reciprocatingly at least the first cutter that first link arm is directly or indirectly rotatablely connected relative to the second cutter,
To carry out cutting work.
2. grass trimmer according to claim 1, which is characterized in that second cutter passes through connecting plate and the second end
Connection, the both ends of first link arm pass through the first connector and the second connector and first cutter and the company respectively
Plate rotation connection；
The first pivoted housing is equipped between first connector and the first end and first cutter；
The second pivoted housing is equipped between second connector and the second end and the connecting plate.
3. grass trimmer according to claim 2, which is characterized in that first pivoted housing and/second pivoted housing are copper sheathing
Or bearing；And/or
First connector and second connector respectively correspond as the first pin shaft and the second pin shaft, first link arm
Both ends are hinged with first cutter and the connecting plate respectively by the first pin shaft and the second pin shaft.
4. grass trimmer according to claim 2, which is characterized in that the number of first link arm be two, described first
Cutter, connecting plate and two first link arms form link mechanism；Second transmission mechanism and at least one described first company
The middle part of arm connects.
5. grass trimmer according to claim 1, which is characterized in that the both ends of first link arm pass through third connector
It is rotatablely connected respectively with first cutter and second cutter with the 4th connector；
Third pivoted housing is equipped between the third connector and the first end and first cutter；
The 4th pivoted housing is equipped between the 4th connector and the second end and second cutter；
First cutter, the second cutter and two first link arms form link mechanism.
6. grass trimmer according to claim 4 or 5, which is characterized in that the link mechanism is parallel four-bar linkage, institute
State the linear reciprocating motion for the long axis direction that the first cutter can be done relative to second cutter along second cutter.
7. grass trimmer according to claim 1, which is characterized in that second transmission mechanism includes:
Crank is configured to be driven by the driving mechanism to transmit driving force；
Rocking bar is configured to by the crank handle turns, and then drives first link arm movement connecting with the rocking bar.
8. grass trimmer according to claim 7, which is characterized in that the crank is eccentric wheel, the eccentric wheel rotation one
Zhou Shi, the first cutter in cutter move back and forth a cycle by driving.
9. grass trimmer according to claim 7 or 8, which is characterized in that the driving mechanism includes:
Motor；
Reduction gearbox assembly is configured to the driving force of the motor passing to the crank.
10. grass trimmer according to claim 1, which is characterized in that the power drive system further include:
Support frame is configured as the driving mechanism and provides support, and support frame as described above is set on the cutter.
11. a kind of power drive system characterized by comprising
Driving mechanism, to provide driving force；
First transmission mechanism, has at least one first link arm, and first link arm includes the first end being oppositely arranged and the
Two ends, the first end are directly or indirectly rotatablely connected with the first cutter in cutter, the second end with cut
The second cutter in cutter is directly or indirectly rotatablely connected；
Second transmission mechanism is configured to be driven by driving mechanism to drive at least one described first link arm movement, and then drives
Move reciprocatingly at least the first cutter that first link arm is directly or indirectly rotatablely connected relative to the second cutter, with into
Row cutting work.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243871A (en) * | 2018-03-09 | 2019-09-17 | 苏州宝时得电动工具有限公司 | Vegetation identifying system, method and grass trimmer |
| CN110235592A (en) * | 2018-03-09 | 2019-09-17 | 苏州宝时得电动工具有限公司 | Grass trimmer and its power drive system |
| CN110973216A (en) * | 2019-12-20 | 2020-04-10 | 无为县马玉虎板鸭店 | Board duck preparation is with scraping hair machine |
-
2018
- 2018-03-09 CN CN201820324998.4U patent/CN208227714U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243871A (en) * | 2018-03-09 | 2019-09-17 | 苏州宝时得电动工具有限公司 | Vegetation identifying system, method and grass trimmer |
| CN110235592A (en) * | 2018-03-09 | 2019-09-17 | 苏州宝时得电动工具有限公司 | Grass trimmer and its power drive system |
| CN110973216A (en) * | 2019-12-20 | 2020-04-10 | 无为县马玉虎板鸭店 | Board duck preparation is with scraping hair machine |
| CN110973216B (en) * | 2019-12-20 | 2021-10-01 | 无为县马玉虎板鸭店 | Board duck preparation is with scraping hair machine |
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