CN101485253B

CN101485253B - Tool for gardens

Info

Publication number: CN101485253B
Application number: CN2008100033669A
Authority: CN
Inventors: 查霞红; 喻学锋
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2008-01-16
Filing date: 2008-01-16
Publication date: 2012-07-25
Anticipated expiration: 2028-01-16
Also published as: CN101485253A

Abstract

The invention discloses a mower. An operating mechanism is extended backwardly from a main machine casing of the mower. The operating mechanism comprises a fixed rod which is arranged inside the main body casing, and a movable rod which can adjust the position relative to the fixed rod. A positioning device arranged between the fixed rod and the movable rod comprises a first positioning part which is arranged on the fixed rod, and a second positioning part which is arranged on the movable rod. The first positioning part and the second positioning part can be selectively engaged and be automatically locked at the engagement position. The movable rod can be folded relative to the fixed rod and can also be adjusted to the operating positions at different heights relative to the fixed rod.

Description

Garden instrument

Technical field

The present invention relates to a kind of garden instrument, the collapsible and adjustable mower of lever position of especially a kind of action bars.

Background technology

Usually; All be provided with the action bars that is used to carry out on outdoor gardening class such as the mower cutting tool; This type of action bars generally comprises the following action bars that is connected in mower main body both sides; And the last action bars that is connected with following action bars, last action bars is provided with the holding part of carrying out mower when supplying operation; Wherein go up action bars and be respectively two parallel bars with following action bars; And the width between the width between two upper control arms and two the following parallel bars is roughly all suitable with mower main body fuselage width; When mower is in running order; The action bars that is connected in the mower main body just extends certain length after one's death to mower, and the operator also compares safety in the end executable operations away from cutting tool; When mower is in off working state; Need mower be collected and store; Usually action bars is provided with two releasable retaining mechanisms respectively with following action bars connecting portion on the mower both sides; When mower temporarily quits work or collects, can discharge from following action bars, will go up action bars then and fold to reduce to collect volume with following action bars with going up action bars.Usually, in mower packing or transportation, following action bars is to pack to dwindle the machine volume of mower from main body dismounting back and last action bars.This retaining mechanism adopts locking nut that action bars up and down is rotated locking usually; This lock mechanism operative is more loaded down with trivial details; Also more time-consuming, after action bars was locked up and down when operation simultaneously, the relative position of action bars on short transverse just can not be regulated again up and down; This is just very inconvenient for the user who needs the different operating height.

Summary of the invention

For overcoming the deficiency of prior art, the invention provides a kind of handled easily bar and carry out folding storage, can realize the relative operating position quick adjustment of upper and lower action bars again, can effectively reduce the garden instrument of entire package and transportation volume simultaneously.

Technical scheme of the present invention is achieved in that a kind of garden instrument; Comprise host shell; The operating mechanism that extends towards the rear from the garden instrument host shell; Said operating mechanism comprises the dead lever that is arranged at body shell, and ability relative fixed bar carries out the motion bar of position adjustments, and said dead lever further comprises following action bars that connects the mower body shell and the intermediate bar that removably connects with following operation; Said intermediate bar and following detachable connection of action bars, said intermediate bar and motion bar pivotal connection; Between said intermediate bar and the following action bars cam lock holding mechanism is set, said cam lock holding mechanism is used for fixing intermediate bar and reaches the relative position of action bars down; Said intermediate bar comprises two parallel straight-bars, and said first keeper is arranged at wherein on the straight-bar; Said first keeper comprises a plurality of locating holes that are provided with along short transverse; The quantity that is provided with of said locating hole is three, and first keeper is provided with spigot surface in the top of locating hole; Said motion bar comprises the pair of parallel bar and on bearing of trend, draws close the formation kink, second keeper be arranged at the corresponding parallel bar of first keeper on; Said second keeper comprises and the alignment pin of deciding the engagement of part hole that said alignment pin is fixedly connected on operator last; Said operator is being provided with the butting section, and said operator is with the butting section being relatively upward operation lever motion of fulcrum; Be arranged with spring on the said alignment pin.

The second embodiment of the invention medi-spring is arranged between the kink face of the inboard and motion bar of the free terminal of operator handle.

Compared with prior art; The invention has the beneficial effects as follows: because the setting of positioner between the motion bar of garden instrument and the dead lever; Make action bars very convenient when folding storage; The operating position of motion bar relative fixed bar can be selected to regulate and automatically lock at chosen position simultaneously; Make whole adjustment process not only easily but also quick, through dead lever being arranged to dismountable intermediate bar and following action bars, make mower pack or transportation in can further dwindle the volume of complete machine.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is described further.

Fig. 1 is a mower schematic perspective view of the present invention;

Fig. 2 is a mower operating mechanism part three-dimensional exploded view of the present invention;

Fig. 3 is a mower action bars vertical view of the present invention;

Fig. 4 A is the folding sketch map that the last action bars of mower of the present invention descends action bars relatively;

Fig. 4 B is the present invention's first view that the hands-operation bar descends action bars to lock relatively of mowing;

Fig. 4 C is the present invention's second view that the hands-operation bar descends action bars to lock relatively of mowing;

Fig. 5 A is the cutaway view of originally putting along A-A hatching direction according to Fig. 3, and action bars descends action bars to be in latched position relatively on this moment;

Fig. 5 B be this according to the cutaway view of Fig. 3 along A-A hatching direction, action bars descends action bars disengagement to lock relatively this moment on, is in the state that can carry out position adjustments;

Fig. 5 C is that this is according to the cutaway view of Fig. 3 along B-B hatching direction;

Fig. 6 is the three-dimensional exploded view of mower operating mechanism second example of the present invention;

1-mower 10-operating mechanism 20-cam lock holding mechanism 30-positioner wherein

2-host shell 11-holding part 21-handgrip 31-operator handle

3-collection grass case 12-switching mechanism 22-cam member 31a-butting section

4a-front-wheel 13-frizzen 22a-through hole 31b-guide part

4b-trailing wheel 14-intermediate bar 23a-pin 31c-connecting portion

Action bars 23b-pin 32-pin under the 5-power brick 15-

6-sectioned housing 15a-end 24-locking nut 33 (')-spring

R-back upper place 16-straight-bar 25-rigid carriers 34-alignment pin

16a-end 25a-sidewall 34a-pin-and-hole

The last action bars 25b-of 17-extends sidewall 34b-locating part

17a-end 26-pin 35-dowel hole

17b-kink 27-locking member 36-pin-and-hole

18-spigot surface 28-through hole 37-lining

19-back-up ring steel wire 29-locating hole 38-through hole

Embodiment

The present invention has come out with and a kind ofly can regulate the folding garden instrument of action bars to different operation position and handled easily bar; This garden instrument can be a mower; Trimmer; Mower class cutting tool as being implementation formula blower etc., describes as specific embodiment with mower at present.

With reference to shown in Figure 1; Mower 1 comprises host shell 2, and is installed on mower host shell 2 both sides and to the operating mechanism 10 of mower back upper place (diagram arrow R shown in direction) longitudinal extension, wherein; Be provided with the motor (not shown) in the mower host shell 2; The top of host shell 2 is provided with the supply unit that promising motor rotation provides power, and this supply unit is a rechargeable type power brick 5, and is positioned at the cutting tool (not shown) of the sectioned housing 6 of host shell 2 belows by the motor-driven rotation; Host shell 2 bottoms are respectively arranged with a pair of front wheel 4a and rear roller 4b, are used to support mower 1 and carry out in ground; The rear of mower host shell 2 has removably connected the careless case 3 of collection; Wherein operating mechanism 10 comprises one for the operator carries out the annular holding part 11 provide, and a pivotal connection in the holding part 11 frizzen 13, be used for making things convenient under the normal operating state operator's actuatable switches mechanism 12 to carry out the operation of mowing.

With reference to Fig. 2; Shown in Figure 3, operating mechanism 10 comprises action bars 15 down, last action bars 17; And the intermediate bar 14 between following action bars 15 of connection and the last action bars 17; Wherein descend action bars 15 for being connected in mower main body 2 both sides and to a pair of parallel bar down of mower host shell 2 rear extensions, intermediate bar 14 roughly takes the shape of the letter U, it comprises that two sections are parallel to each other and straight-bar 16 that spacing and following action bars 15 spacings are complementary; The end 16a formation semicircular of straight-bar 16 and the round bar end 15a of following action bars 15 removably obvolvent connect, and following action bars 15 is locked by the cam lock holding mechanism 20 that is arranged at straight-bar 16 both sides respectively with this interface sites of intermediate bar 16.Wherein cam lock holding mechanism 20 comprises a handgrip 21; And two cam members 22 that extend and form bifurcated to handgrip 21 1 ends; Cam member 22 is provided with the connection that plugs of the sub-23a of through hole 22a supply and marketing; The end of pin 23b is provided with screw thread, and the other end is provided with pin-and-hole and carries out pin joint through pin 23a and cam member 22, and the end that pin 23b is provided with screw thread is matched with locking nut 24 respectively after passing straight-bar 16 end 16a and descending the perforate of action bars 15 round bar end 15a; Handgrip 21 through operation of cam locking mechanism 20 can will descend the action bars 15 and the relative position of intermediate bar 14 to lock; Release cam member 22 can be removed this latched position, and the operator can dismantle intermediate bar 14 easily from following action bars 15, thereby can further facilitate for dwindling the volume of mower in transportation or packaging process.

Certainly, intermediate bar 14 can be connected with following action bars 15 or be arranged to one, so just need not establish retaining mechanism 20 in addition on the action bars 15 down.In operating process; Whole action bars 15 down; Perhaps all relative mower main body housing with following action bars 15 of intermediate bar 14 fixedly installs, thereby forms dead lever, and action bars 17 relative fixed bars can fold or can become a motion bar in selecting diverse location to lock and go up.

Pivotal connection between intermediate bar 14 and the last action bars 17, and through positioner 30 its relative pivot location is locked.Both sides straight-bar 16 positions of intermediate bar 14 are set with a rigid carriers 25 respectively, and this rigid carriers 25 roughly takes the shape of the letter U, and it comprises the sidewall 25a of two opposing parallel, and one is welded fixing diapire with straight-bar 16 lower surfaces; Two rigid carriers 25 structures are not quite similar wherein; The sidewall 25a that wherein has a rigid carriers 25 at least one is positioned at the shortwall in straight-bar 16 outsides; And another sidewall is one to be positioned at the inboard extension longwell 25b of straight-bar 16; Extend the relative shortwall 25a of a longwell 25b end far away and on short transverse, evenly be provided with a plurality of locating holes 29, quantity is set is three to locating hole 29 in the present embodiment, and extends longwell 25b and form a spigot surface 18 in the top of the highest locating hole 29; Two parallel side wall 25a of U-shaped

rigid carriers

25,25b is respectively equipped with perforate on the last position that aligns; Last action bars 17 is two and is parallel to each other and the mutual round bar of drawing close that bends on bearing of trend; Last action bars 17 is respectively equipped with perforate with intermediate bar 14 matched round bar end 17a; 26 1 ends of pinning are arranged to blunt nosed; Thereby the other end passes rigidity and inserts after perforate and the perforate of round bar end of frame 25 to fix with locking member 27 and will go up action bars 17 and be pinned on the intermediate bar 14, and promptly going up action bars 17 can 26 be that relative intermediate bar 14 of rotating shaft or time action bars 15 pivot to pin.Last action bars 17 relative stiffness carriages 25 are provided with a side round bar that extends longwell 25b and are provided with dowel hole 35; When last action bars 17 relative intermediate bars 14 pivot; This dowel hole 35 in last action bars 17 be provided with the position with extend on the longwell 25b three locating hole 29 positions respectively over against, promptly be the center of circle be the circular arc distribution extending to locating hole 29 on the longwell 25b to pin 26.

Positioner 30 comprises that also an operator is 31; This operator has free end and a junction 31c that the kink 17b profile with last action bars 11 is complementary to 31; This connecting portion 31c is provided with pin-and-hole 36 supply and marketing 32 and plugs, and an end of alignment pin 34 also is provided with pin-and-hole 34a, and alignment pin 34 fixedly connects with connecting portion 31c through pin 32; Be arranged with spring 33 on the alignment pin 34, the other end of alignment pin 34 is inserted in the dowel hole 35 of action bars movably; In addition, be provided with a locating part 34b on the alignment pin 34 in position near dowel hole 34a; Operator is provided with a spherical butting section 31a (with reference to Fig. 3) to 31 inboard; Operator is provided with two guide part 31b (only showing among the figure) up and down to 31 between connecting portion 31c and butting section 31a; This guide part 31b extends 31 inboards and support respectively two end faces up and down of last action bars 17 to operator; On the guide part 31b, carry out 31 motion spacing operator about back-up ring steel wire 19 is connected in respectively with its two ends simultaneously.When operator 31 under the situation that does not receive any external force effect, alignment pin 34 its end under the active force of spring 33 extends dowel hole 35; When operating mechanism 10 is under the normal operating conditions; Alignment pin 34 ends that extend dowel hole 35 are meshed with one of them locating hole 29; Alignment pin 34 automatically locks in this position of engagement under the maintenance of spring 33 elastic forces with locating hole 29, thereby the pivot position that will go up action bars 17 relative intermediate bars 17 positions; When operating mechanism 10 needs to regulate or collects; The elastic force applying light operator that only need overcome spring 33 is 31 free end; Operator is offseted 31 the butting section 31a and the tube wall of last action bars 17; And go up action bars 17 to 31 pivot point relatively with this butting section 31a as operator and make a pivoting action, this moment, the end of alignment pin 34 then can shift out from locating hole 29, made that going up action bars 17 has thrown off the locking with intermediate bar 14; And the relative position of going up action bars 17 relative intermediate bars 14 or following action bars 15 can be realized regulating, thereby can satisfy the required differing heights operating position of operator.

With reference to Fig. 4 A, AB shown in the 4C, is the position of operating mechanism 10 when being in the different working state.When mower does not need execution work; The operator can be according to direction shown in Fig. 4 A; Make alignment pin 34 throw off the engagement with locating hole 29 with proficiency pressing operation handgrip 31, another held is lived in action bars 17 and is made it downward action bars 15 direction pivots, is switched to the position that exceeds the highest locating hole 29 that extends longwell 25b when last action bars 17; Can select to discharge to operator 31 push; Continue to make action bars 17 to descend action bars 15 to pivot till overlapped with it relatively again, like this, the volume energy that stores of mower 1 effectively is under control.When the relative position that needs to go up action bars 17 and following action bars 15 as the operator locks also executable operations; According to the direction shown in Fig. 4 B; To go up action bars 17 oppositely pivots; To extend the spigot surface 18 of longwell 25b inconsistent when being switched to end and rigid carriers 25 that alignment pin 34 extends dowel hole 35; Alignment pin 34 ends just can get into extension longwell 25b automatically along spigot surface 18 and be arranged in first locating hole 29 on the short transverse, the automatic location of action bars 17 on first kind of height and position on the effect of spring 33 exerts oneself to realize; If extend the spigot surface 18 of longwell 25b when inconsistent in the end of dowel hole 35 and rigid carriers 25; Even the operator discharges action bars 17; Because the action of gravity of last action bars 17; Alignment pin 34 can mesh first locating hole 29 automatically along spigot surface 18, and descends the relative position of action bars 15 to be locked on the intermediate bar 14 relatively action bars on this 17.When needs regulate to be gone up action bars 11 with respect to the relative position of action bars 15 down; Only need the free end of pressing operation handgrip 31; Operator 31 around the butting section 31a pivoted; The alignment pin 34 that is fixedly set in connecting portion 31c can be thrown off the engagement with locating hole 29, the required operation height and position of action bars 17 in the adjusting, and the releasing operation handgrip 31 then; Alignment pin 34 can exert oneself to be meshed with the locating hole 29 that extends longwell 25b corresponding height position at the elastic reaction of spring 33, and action bars 17 is locked with respect to the height and position of following action bars 15 automatically on this moment.Certainly, extend the locating hole 29 that has the extreme higher position on the longwell 25b, the locating hole 29 of extreme lower position is also arranged, the quantity of this locating hole 29 and spacing can be provided with according to the adjusting needs of reality; When reaching 29 positions, lowest positioned hole, can stop the upward further downward pivot of action bars 11 through position-limit mechanism is set, thereby make adjusting have certain shift feeling when arriving last height and position, can not produce the unnecessary adjusting that reaches repeatedly and operate.

Shown in 5A; Alignment pin 34 engaging locks are in the 3rd locating hole 29; Be provided with lining 37 in the dowel hole 35 of last action bars 17, alignment pin 34 passes lining 37 and locating hole 29 engagements, and the head of alignment pin 34 is arranged to flange shape; Its bar portion relative head of diameter is less; Lining 37 is being arranged to step-likely near dowel hole 35 openings of connecting

portion

31c, 33 on spring is arranged between the stage portion of flange part and lining 37 of alignment pin 34, to such an extent as to overcome that the elastic force alignment pin 34 of spring 33 can move in lining 37 and with the disengagement engagement of locating hole 29.And locating part 34b has guaranteed that in the setting of alignment pin 34 the flange shape end of alignment pin 34 and the distance between the locating part 34b are constant, has promptly guaranteed the depth of engagement of alignment pin 34 with locating hole 29, avoids meshing too dark and situation generation that can't discharge.

Shown in 5B, operator is receiving the pivoting action of pushing the relative butting section 31b of generation under the active force to 31, and alignment pin 34 produced in lining 37 and moved and mesh with locating hole 29 disengagements this moment, and spring 33 is compressed; The operator can regulate the position of engagement of short transverse as required again or can descend action bars 15 to fold relatively with going up action bars 17.When adjusting alignment pin 34 arrived required locating hole 29 height and positions, releasing operation handgrip 31, the elastic reset of spring 33 impelled alignment pin 34 and selected ground locating hole 29 to mesh locking again.

Shown in 5C; Back-up ring steel wire 19 is connected in respectively in the through hole 38 of guide part 31b with its two ends; Two guide part 31b are supported in respectively on the tube wall of action bars 11; The design of back-up ring steel wire 19 makes and to receive certain limitation to 31 stressed pivoting angles when operator, guide part 31b be arranged so that releasing operation handgrip 31 time, spring 33 guarantees that in reseting procedure the motion of connecting portion 31c obtains leading.

With reference to shown in Figure 7, be second embodiment of the present invention further, this embodiment and a last embodiment have similarity, in order to express easily, identical member are represented that with identical numbering identical member is not given unnecessary details yet here at present; The spring 33 that will be sheathed on alignment pin 34 in the present embodiment originally has been modified to spring 33 '; And spring 33 ' is arranged between the kink 17b of operator and last action bars 17 inboard 31 free end; Spring 33 ' one end attended operation handgrip 31, the other end connect goes up action bars kink 17b; Operating mechanism 10 is under normal mode of operation, and operator is 31 under the active force of spring 33 ', and the alignment pin 34 and the locating hole 29 that are fixedly set in connecting portion 31c are in the engaging lock allocation; When needing the position adjustments of action bars; Making operator through pressing operation handgrip 31 free ends with the active force that overcomes spring 33 ' is 31 that fulcrum pivots with butting section 31a (with reference to Fig. 3); This moment, alignment pin 34 was thrown off and the engagement of locating hole 29 locking, and the operator can regulate the relative position of action bars 17 and following action bars 15 again.

Positioner 30 among the present invention comprises can select fixed locating hole of engaging lock 29 and alignment pin 34; But positioner of the present invention is not limited to locating hole and this a pair of joggle piece of alignment pin; So can be also with replacement other keeper with those skilled in the art's imagination; For example can a pair of location end tooth be arranged at action bars respectively, the connecting portion of following action bars, the location end tooth can be selected engagement and automatically lock on the action bars short transverse; As long as meet the wish of claim of the present invention, all belong to protection category of the present invention.

Claims

1. a garden instrument comprises host shell (2), the operating mechanism (10) that extends towards the rear from the garden instrument host shell; Said operating mechanism comprises the dead lever (15) that is arranged at body shell; And can relative fixed bar carry out the motion bar (17) of position adjustments, be provided with positioner (30) between said dead lever and the motion bar, it is characterized in that: said positioner comprises first keeper (25) that is arranged at dead lever and is arranged at second keeper (34) on the motion bar; Said first keeper (25) selectively meshes with second keeper (34); And first keeper (25) automatically locks in the said position of engagement with second keeper (34), and said first keeper comprises a plurality of locating holes that are provided with along short transverse, and said second keeper comprises the alignment pin with the locating hole engagement; Said positioner further comprises an operator handle; Free end and a junction (31c) that said operator is complementary kink (17b) profile that has with motion bar, this connecting portion is provided with first pin-and-hole (36) that supply and marketing (32) plugs, and an end of said alignment pin is provided with second pin-and-hole (34a) that supply and marketing (32) plugs; Said alignment pin fixedly connects through pin (32) and connecting portion (31c); Be arranged with spring (33) on the alignment pin, said operator is being provided with butting section (31a), and said connecting portion and free end are positioned at the two ends, butting section; Said free end is the relative motion bar pivoted of fulcrum with the butting section under the pressing force effect; The alignment pin end shifts out from locating hole, when said operator not receiving external force to do the time spent, the alignment pin end extends locating hole under acting force of the spring.

2. garden instrument according to claim 1 is characterized in that: said dead lever (15) further comprises following action bars that connects host shell and the intermediate bar (14) that removably connects with following action bars.

3. garden instrument according to claim 2 is characterized in that: between said action bars down and the intermediate bar cam lock holding mechanism (20) is set, is used for fixing intermediate bar and reaches the relative position of action bars down.

4. garden instrument according to claim 3 is characterized in that: said intermediate bar (14) comprises two parallel straight-bars (16), and said first keeper (25) is arranged at wherein on the straight-bar.

5. garden instrument according to claim 1 is characterized in that: said garden instrument is a mower.

6. according to claim 4 or 5 described garden instruments, it is characterized in that: said first keeper (25) and second keeper (34) selectively engagement on two different operation positions at least.

7. garden instrument according to claim 6 is characterized in that: said first keeper (25) comprises three locating holes (29) that are provided with along short transverse, and said first keeper (25) is provided with spigot surface (18) in the top of locating hole (29).

8. garden instrument according to claim 7; It is characterized in that: said motion bar (17) comprises the pair of parallel bar and on bearing of trend, draws close and form kink (17b), second keeper (34) be arranged at the corresponding parallel bar of first keeper (25) on.

9. a garden instrument comprises host shell (2), the operating mechanism (10) that extends towards the rear from the garden instrument host shell; Said operating mechanism comprises the dead lever (15) that is arranged at body shell; And can relative fixed bar carry out the motion bar (17) of position adjustments, be provided with positioner (30) between said dead lever and the motion bar, it is characterized in that: said positioner comprises first keeper (25) that is arranged at dead lever and is arranged at second keeper (34) on the motion bar; Said first keeper (25) selectively meshes with second keeper (34); And first keeper (25) automatically locks in the said position of engagement with second keeper (34), and said first keeper comprises a plurality of locating holes that are provided with along short transverse, and said second keeper comprises the alignment pin with the locating hole engagement; Said positioner further comprises an operator handle; Free end and a junction (31c) that said operator is complementary kink (17b) profile that has with motion bar, this connecting portion is provided with first pin-and-hole (36) that supply and marketing (32) plugs, and an end of said alignment pin is provided with second pin-and-hole (34a) that supply and marketing (32) plugs; Said alignment pin fixedly connects through pin (32) and connecting portion (31c); Said operator is being provided with butting section (31a), and said connecting portion and free end are positioned at the two ends, butting section, is provided with spring (33 ') between the free end inboard of said operator handle and the motion bar kink (17b); Operator is under acting force of the spring; Alignment pin and locating hole are in the engaging lock allocation, and pressing operation handgrip free end makes operator being that fulcrum pivots with the butting section to overcome acting force of the spring, and alignment pin is thrown off the engagement locking with locating hole.