CN1398507A

CN1398507A - Garden tool

Info

Publication number: CN1398507A
Application number: CN 02119763
Authority: CN
Inventors: 保罗·A·贝茨
Original assignee: JAMES NEEL HOLDING CO
Current assignee: JAMES NEEL HOLDING CO
Priority date: 2001-05-17
Filing date: 2002-05-16
Publication date: 2003-02-26
Anticipated expiration: 2022-05-16
Also published as: GB0210469D0; GB2375500B; GB0112003D0; CN1251576C; GB2375500A; TWI232724B

Abstract

The invention relates to a garden tool and in particular to so-called edging shears for cutting the edges of a lawned or grassed area. Hitherto, edging shears have had pivotal handles with cooperating blades, opening and closing the handles causing both blades to pivot to open and closed positions. Pivotal movement of the lower blade frequently causes ground contact, to limit the degree of opening of the blades or to cause the shears to lift, making edge cutting difficult or practically impossible. This difficulty is avoided by a construction of garden tool with a pair of handles each pivotally located on a support plate, the handles each having facing and meshing gear tooth sectors of the same first full diameter, one handle having a second gear tooth sector lying substantially at 90 DEG. to the first sector and having a larger second fu diameter, the second gear tooth sector being in meshing engagement with a third gear tooth sector secured directly, or indirectly, to a blade pivotally mounted on the support plate, the third gear tooth sector having a third full diameter smaller than the said first full diameter, and there being a second blade secured to the support plate and extending in the same general direction as the pivotal blade.

Description

Garden tool set

Technical field

The present invention relates to garden tool set, and modify about so-called edge especially and cut, promptly a kind of is the blade tool of the pivot at shearing meadow or the edge that the zone, lawn is arranged.

Background technology

Usually the edge modification is cut by relatively long handle and is constituted, so that the user with erect posture station basically, each has the blade that its each handle is become 90 ° of extensions, and have towards itself and handle junction and be pivotally connected to together blade, open and the closure of handle causes blade to be opened pivotally and closing motion in scissors-like mode, so that cutting is in the grass between the blade.

There is a tangible degree of depth in the ground of there, edge from the surface, meadow to the border on the meadow, can hold the pivoting action of lower blade.But,, then fully open can allow to introduce before the grass and can contact with ground between the lower blade and ground at blade if this degree of depth is less.Further attempt to open and can cause instrument integral body to be lifted, make the cutting at edge, meadow extremely difficult, perhaps in fact impossible.

Summary of the invention

Main purpose of the present invention is to overcome above-mentioned difficulties.

According to the present invention, a kind of garden tool set comprises a pair of handle, each handle is placed on the bearing flat plate pivotally, in the handle each comprises the sector gear of facing and meshing with first identical full diameter, a handle has and becomes 90 ° second sector gear basically with first sector gear, this second sector gear has the second bigger full diameter, second sector gear is with direct, or indirect securement meshes to the 3rd sector gear on the blade, this blade is installed on the bearing flat plate pivotally, the 3rd sector gear has the 3rd full diameter, the 3rd full diameter is less than described first full diameter, has second blade that is fixed on the bearing flat plate and extends along the roughly direction identical with the pivot blade simultaneously.

By on handle, having the mesh sector gear of identical full diameter, this just guarantees the equal and opposite pivoting action of two handles on bearing flat plate, and one cause thus the pivot blade open and closure state between pivot, second sector gear by having bigger full diameter and the full diameter on the blade be less than the engagement of the sector gear of described first full diameter simultaneously, reaches an effective open configuration with regard to the pivoting action that guarantees the pivot blade and cut with comparalive ease allowing.It is desirable to, when the ratio between the second and the 3rd full diameter is 15:8, so that the pivoting action of pivot blade is slightly less than the degree of handle pivoting action.A cover can be set so that bearing flat plate and sector gear are wrapped, stretch out handle and blade from this cover simultaneously, similarly, the wall of cover can form bearing flat plate, with the movably shell of the setting lower end with handle, the adjacent end of sector gear and blade is wrapped.

Bearing flat plate and fixing sheet can be whole structures and be formed by any suitable casting or machining operation.Similarly, blade can be separated processing and suitably be fixed on the bearing flat plate, such as the mode by the slit that the cooperates joint on the end of the projection on the bearing flat plate and fixing blade.

Bearing flat plate can be with three pins flat or screw thread so that be used as the pivot of handle or movable blade, and flat pin is deformed to form head so that handle and pivot blade are held in place, and perhaps uses the nut that is applied on the screw rod to reach this purpose.Similarly, pin can be provided with on the cover board so that combine with hole on the main shaft on the supporting member, and hold-down screw can pass cover plate simultaneously, and pin is on the cover board gone forward side by side in the hole of main shaft.

For the sector gear on the pivot blade being arranged in the plane identical with sector gear on the operating grip, one projection can be set on this blade, the 3rd sector gear is fixed on or is formed on this projection, and on bearing flat plate, be formed with a depression, place pivot blade and projection thereof therein, pivoting handle is in abutting connection with the neighbouring surface of bearing flat plate.

For taking into account the user of different heights, each handle can be retractable structure, has the device that keeps handle at the state that extends.

Referring now to description of drawings one embodiment of the present of invention, wherein:

Fig. 1 modifies the end view of cutting according to edge of the present invention; And

Fig. 2 is that the decomposition diagram of cutting is modified at the edge of Fig. 1.

In the figure, the edge is modified and to be cut 1 cutting blade 4,5 that has two

long handles

2,3 and extend from supporting member 6 and cover plate 7.

Being integrally formed or rigidly fix thereon sector gear 8 with handle 2 in the lower end of a handle 2, is integrally formed or rigidly fix thereon sector gear 9 with handle 3 at the identical lower end of handle 3 simultaneously.Sector gear 8 has two teeth, 11 engagements of three teeth 10 and sector gear 9, and

tooth

10 and 11 has identical full diameter (full diameter).

It on sector gear 9 second sector gear 12 with sector gear 9 or 90 ° of placements, sector gear 12 has the tooth 13 of three full diameters less than the full diameter of sector gear 9, gear 14 engagements that this tooth 13 and full diameter and sector gear 12 are identical, this gear 14 directly or indirectly is installed on the inner of blade 4 by an installing plate.

Blade 5 is installed on the supporting member 6 rigidly, simultaneously main shaft 15 stretches out by mating holes 16 by blade 5 and its gear 14 from the inner surface of supporting member 6, so as by a fixed screw or other fixture be combined on the cover plate 7 in case with supporting member and cover plate closely approaching and column position keeps together and sector gear on the handle.

The second and the 3rd main shaft 17 with 18 from supporting member 6 stretch out and by each

mating holes

19,20 on

sector gear

8 and 9 so that be close to solid screw or other fixture combines to guarantee that supporting member 6 and cover plate 7 are held in place.Therefore, as shown, cooperate

15A, 17A, 18A to be arranged on the cover plate 7 so that be combined in the hole of

main shaft

15,17,18 in the mode that is pressed into cooperation respectively.

From the place that housing passes, suitable gap is set on housing component at

handle

2 and 3, the gap 23 that blade 4,5 passes also is set.

Therefore, use the handle of being caught by the operator who is in general stand up position, the edge is modified to cut to be held and is close to for example edge, meadow.Handle 3,4 and therefore

sector gear

8,9 can by around separately

main shaft

17 and 18 with counter-rotation, the

sector gear

8,9 of engagement guarantees that two handles are to equate but opposite number of degrees motion.Because sector gear 9 rotates around its main shaft 18, just cause rotatablely moving of sector gear 12, and the rotatablely move rotation that causes gear 14 and the blade 4 of sector gear 12 are around the arcuate movement of main shaft 16, so that open with closed with respect to the blade 5 that is held in blade 4 motion processes with respect to the housing component stationary fixing.

Thereby blade 5 remains under the edge, meadow closely near ground 1, movable blade 4 then the action of execution scissors with at meadow edge scissor grass.

Claims

1. garden tool set, comprise a pair of handle, wherein each is positioned on the bearing flat plate pivotly, each of handle comprise face with the engagement the sector gear with identical first full diameter, a handle has and becomes 90 ° second sector gear basically with first sector gear, and this second sector gear has second a bigger full diameter, second sector gear and the 3rd sector gear engagement that is fixed to directly or indirectly on the blade that is installed in pivotally on the bearing flat plate, the 3rd sector gear has the 3rd full diameter less than described first full diameter, and second blade that is fixed on the bearing flat plate and extends along the roughly direction identical with the pivot blade is arranged simultaneously.

2. garden tool set as claimed in claim 1 is characterized in that: the ratio between the second and the 3rd full diameter is 15: 8, so that produce a pivoting action less than the pivot blade of handle pivoting action.

3. as the garden tool set of claim 1 or 2, it is characterized in that: a housing is set to encase bearing flat plate and sector gear.

4. as the garden tool set of claim 1 or 2, it is characterized in that: the wall of housing constitutes bearing flat plate, and one of setting is movably covered so that encase the approach end of lower end, sector gear and the blade of handle.

5. as each garden tool set in the claim 1 to 4, it is characterized in that: bearing flat plate and fixed blade are overall structures.

6. as each garden tool set of claim 1 to 4, it is characterized in that: that bearing flat plate and fixed blade are formed separately and suitably fixing each other.

7. garden tool set as claimed in claim 6 is characterized in that: cooperate the slit engagement in the projection on the bearing flat plate and the end of fixed blade.

8. as each garden tool set of claim 1 to 7, it is characterized in that: have the pivot of three pins flat or screw thread on the bearing flat plate as handle and movable blade.

9. garden tool set as claimed in claim 8 is characterized in that: pin is to be deformed to form head so that the flat pin that handle and pivot blade are held in place.

10. garden tool set as claimed in claim 8 is characterized in that: to be threaded so that accept nut be held in place handle and movable blade with pin.

11. the garden tool set as claim 9 or 10 is characterized in that: pin on the cover board forms so that combine with hole in each main shaft on supporting member.

12. the garden tool set as claim 11 is characterized in that: the pin that hold-down screw passes on cover plate, the cover plate is gone forward side by side into the hole of main shaft.

13. each the garden tool set as claim 1 to 11 is characterized in that: the gap is set on bearing flat plate and cover plate moves respectively to allow pivot blade and handle.

14. basically as a kind of garden tool set of being described with reference to the drawings before this.