CN201383937Y

CN201383937Y - Hand-held cutter

Info

Publication number: CN201383937Y
Application number: CN 200920008412
Authority: CN
Inventors: 王春艳
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2009-03-06
Filing date: 2009-03-06
Publication date: 2010-01-20
Anticipated expiration: 2019-03-06

Abstract

The utility model discloses a hand-held cutter, which comprises a base (2), a main cutter body(10) detachably connected with the base, an operating lever (3) arranged on the base, and rollers (8a, 8b) for supporting the base, wherein the rollers are provided with a wheel axle (9), and the base is provided with at least two gear grooves (19a, 19b); the wheel axle is arranged relative to the pivot of the base and can be selectively meshed with the gear grooves, and when the wheel axle is meshed with the gear grooves, the wheel axle and the base are relatively fixed; and the wheel axle can be conveniently and quickly adjusted. The utility model has simple structure and lower cost.

Description

A kind of hand held cutting tool

Technical field

The utility model relates to a kind of handheld operating apparatus, especially a kind of gardening grass mower.

Background technology

Usually, all be provided with the roller that is supported in ground and is used to walk on outdoor gardening class such as grass mower, the mower cutting tool, this type of roller is arranged to adjustable form usually, be used for when cutting operation needs, regulate the relative distance between roller and the ground, thereby the height that changes between cutting tool and the ground plant satisfies the mowing needs.

Announce No. 200953749 patent as Chinese patent and disclosed a kind of mower of regulating the roller position, it comprises main body and push rod, wherein pusher section includes the expansion link of handle and connection handle and main body, main body partly includes casing and includes the working head of rotating disk, nylon rope, the outside of working head is provided with protective cover, the adjustable roller up and down that the both sides of protective cover are adorned respectively.Wherein rolling wheel regulator comprises a support, correspondingly on support and the protective cover is provided with the hole that several are vertically arranged, and a connecting axle with the wheel cap close-fitting passes the described support tight fit that is located at the protective cover inboard of Kong Houyu of the centre bore and the protective cover of roller.Owing to have the roller of two support machines, and two rollers can be adjusted up and down, thereby not only help in operator's use keeping machine steadily, alleviate the burden that lifts machine, and pass through the adjustment of the upper-lower position of roller, can change the mowing height that the distance between working head and ground is satisfied the demand.

Chinese patent is announced patent No. 2712068 for another example, its specification has disclosed a kind of height adjusting mechanism of hand-held grass mower, it is characterized in that, on the grass mower pedestal, be provided with a guide groove that runs through the pedestal both sides, described pedestal is distributed with locating hole in the both sides of guide groove along the guide groove bearing of trend, a flute profile supporting seat, its both sides cell wall is inserted in the pedestal along base bottom, and corresponding respectively guide pillar that passes guide groove and the projection of inserting locating hole of being provided with on this both sides cell wall, when grass mower when cutting grass, this flute profile supporting seat is supported on the meadow, by regulating the height of flute profile supporting seat, obtains required shear height.

The roller adjustment structure of the mower that first preceding case discloses, because roller is arranged at the both sides of protective cover respectively, therefore when execution was highly regulated, the roller that need regulate both sides respectively was to corresponding height and position; And in adjustment process, need earlier connecting axle to be transferred to, and then the corresponding hole on insertion protective cover and the support; Such operation installation procedure is very loaded down with trivial details, and is also very consuming time, do not utilize cutting operation effectively.

The grass mower of second preceding case announcement is when carrying out cutting operation, its supporting seat is supported on the meadow, the supporting surface of a broad of supporting seat tool, grass mower just can obtain a stable support, when supporting seat carries out in ground will producing friction between supporting surface and the ground when mobile, this frictional resistance will have influence on operation and operating efficiency, and the gear adjustment structure relative complex of its height, operation are also inconvenient.

The utility model content

For overcoming the deficiencies in the prior art, the utility model provides a kind of height that can carry out support roller quickly and easily to regulate and to heighten structure simple relatively, lower-cost handheld operating apparatus.

The technical solution of the utility model is achieved in that a kind of hand held cutting tool, comprise pedestal, the tool body that removably connects with pedestal, be arranged at the action bars of pedestal, be used for the roller of supporting base, described roller is provided with wheel shaft, described pedestal is provided with two gear grooves at least, the relative base pivot setting of described wheel shaft also selectively is engaged in described gear groove, when wheel shaft is engaged in the gear groove, and described wheel shaft and pedestal relative fixed.Described tool body is a grass mower, the scalable adjusting of described handlebar.

Described gear groove is interspersed; The cross-point of gear groove and the pivot center of wheel shaft coincide; Described pedestal comprises connector that is connected with action bars and the housing that connects with tool body; Described connector is provided with controlling organization, and described controlling organization can be selected connector and action bars to be locked or discharge; Described connector is connected by threads turn with housing, and by position-limit mechanism the relative position of connector and housing is fixed; Described wheel shaft comprise central shaft and with the outrigger shaft of central axes, described roller is pivotally connected to outrigger shaft.Between described central shaft and the outrigger shaft connecting portion is set, described connecting portion selectively locks with described gear groove engagement; Spring and collar are set on the described central shaft.

In sum, the utility model has the advantages that: the operator can regulate by convenient, fast pair roller height, and it is simple relatively to heighten structure, favourable reducing cost.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the schematic perspective view of the utility model handheld operating apparatus embodiment.

Fig. 2 is the vertical view after the utility model handheld operating apparatus is removed instrument.

Fig. 3 is the part three-dimensional exploded view of the utility model handheld operating apparatus.

Fig. 4 A is that the utility model handheld operating apparatus is removed the structural representation that is in first duty behind an instrument and the roller.

Fig. 4 B installs behind the roller cut-away view along the A-A direction according to Fig. 4 A.

Fig. 5 A is that the utility model handheld operating apparatus is removed the structural representation that is in second duty behind a tool body and the roller.

Fig. 5 B installs behind the roller cut-away view along the B-B direction according to Fig. 5 A.

Fig. 6 is the side schematic view according to Fig. 5 A, two kinds of duties of 5B.

Wherein: 1-hand-held instruments 7b-safety cage knob 16-spring

2-pedestal 8a-roller 17a-collar

2a-housing 8b-roller 17b-collar

2b-housing 9-wheel shaft 17c-collar

3-action bars 9a-central shaft 18-bottom groove

The 3a-head rod 9b-outrigger shaft 18a-first gear groove

The 3b-second connecting rod 10-grass mower main body 18b-second gear groove

4-locking pipe box 11-working head 19a-connecting portion

The 5-operator is 12-operating grip 19b-connecting portion

6-holding part 13-safety flip flop equipment 20-controlling organization

7-safety flip flop equipment 14-toolbox 21-electrical connector

7a-switch triggering part 15-connector

Embodiment

The utility model has come out with a kind of hand held cutting tool that the roller height is transferred device that is provided with, and now describes with specific embodiment.

With reference to shown in Figure 1, hand held cutting tool 1 is provided with a working basic stand 2, and pedestal 2 is connected with action bars 3, the both sides of pedestal 2 are respectively arranged with

roller

8a, 8b, and pedestal 2 is provided with

housing

2a, 2b, grass mower main body 10 removably connects and is supported on the housing 2a of pedestal 2, on the 2b.Wherein, handlebar 3 comprises the head rod 3a that is connected with pedestal 2, and with the second connecting rod 3b of head rod 3a socket, the scalable adjusting of relative position between the head rod 3a and the second connecting rod 3b, locking pipe box 4 is used for this position is locked; The upwardly extending terminal part of the second connecting rod 3b forms an operator 5, operator is provided with the elasticity encapsulate to 5 holding part 6, be used to improve the comfort of operator when the grasping handgrip, simultaneously also can reduce the vibratory sensation that cutting operation causes, operator is provided with safe flip flop equipment 7 to 5, the safe cage knob 7b that this safe flip flop equipment 7 comprises the switch triggering part 7a that is positioned at the lower end, holding part and is positioned at front end both sides, holding part, the user can promote the safe cage knob 7b of any side earlier, and then trigger switch triggering part 7a could start grass mower execution cutting work; So structure setting of handlebar 3 makes that the different operating person can be according to the operation of action need regulating handle bar height, thereby can obtain an only operating position.Wherein, grass mower main body 10 comprises an operating grip 12, and the working head 11 that is connected with operating grip, be provided with motor and drive unit (not shown) in the working head 11, toolbox 14 comprises fixes a cutting tool and bottom tool, driven device drives wherein to have at least a cutter to be connected also with drive unit, carries out cutting action thereby make upper and lower cutter to do relatively reciprocating motion; When operator's handheld operating apparatus is uprightly pruned work, the electrical connector (not shown) by being arranged at grass mower main body 10 afterbodys and electrical connector 21 (see figure 2)s of pedestal 2 electrically connect, and make the operator only need safe flip flop equipment 7 on the open operation handle 3 just can start grass mower and carry out work; Because grass mower main body 10 is arranged to detachable being connected with pedestal 2, therefore after grass mower main body 10 disassembles from pedestal 2, grass mower main body 10 can be separately used as a light hand-held instrument, is arranged at by control that safe flip flop equipment 13 just can carry out cutting operation on the operating grip 12.

With further reference to Fig. 2, shown in Figure 3, pedestal 2 comprises two Hough

sandwich type element

2a, 2b, and 15, two Hough sandwich type elements of

connector

2a, and 2b can utilize screw or other securing member to fix, and housing is connected with action bars 3 by connector 15.Mesh and can relatively rotate by screw thread between pedestal 2 housings and the connector 15, base housing and connector 15 positions are positioned by a position-limit mechanism (not shown); One controlling organization 20 is set between connector 15 and the action bars 3, regulates this controlling organization 20, the connector 15 and the relative position of action bars 3 can be locked or discharge, thereby make connector 15 can rotate relatively with action bars 3 by rotation; When handlebar 3 is in connector 15 pivotable states, the grass mower of this handheld operation is applicable to the pruning work of close meadow fringe regions such as wall limit, angle of handlebar 3 automatically relative grass mower main bodys 10 pivots this moment, operator's do not need to be next to the wall limit walking, and as long as cut the direction walking that moves ahead along being parallel to grass.Two

roller

8a, 8b is connected by a wheel shaft 9, and wherein wheel shaft 9 comprises a central shaft 9a, the central shaft 9a two ends at right angles certain distance of bending form connecting portion 19, and then be horizontal-extending by the terminal bending of connecting portion 19, form two outrigger shaft 9b that parallel with

central shaft

9a, 9c,

roller

8b, 8a is pivotally connected to two outrigger shaft 9b respectively, the end of 9c, so

outrigger shaft

9b, 9c is roller 8b, the pivot rotation of 8a when ground surface; Wherein central shaft 9a goes up the sheathed spring 16 in position near outrigger shaft 9c, and collar 17a is fixed in central shaft 9a and upward and near spring 16 outsides is used for carrying out spacing to spring 16; In addition,

collar

17b, 17c are arranged in outrigger shaft 9b respectively, are used for pair roller 8a on the 9c, and 8b carries out spacing.The central shaft 9a of wheel shaft 9 is pivotally connected in the bottom groove 18 of connector 15.

Shown in Fig. 3,4A, 5A, the outside end face of connector 15 close outrigger shaft 9b is provided with and is used to the first gear groove 18a and the second gear groove 18b that card is established connecting portion 19a, the first gear groove 18a and the second gear groove 18b are 90 degree and are crisscross arranged, and the pivot center that the first gear groove 18a and the second gear groove 18b are 90 degree cross-points and central shaft 9a coincide.Shown in Fig. 4 A, AB, the central shaft 9a of wheel shaft 9 is connected in the bottom groove 18, connecting portion 19a then is engaged in the second gear groove 18b of vertical layout, the outrigger shaft 9a that this moment is parallel with central shaft 9a, the position of 9b is higher than central shaft 9a, be roller 8a, the pivot center of 8b is higher than central shaft 9a; This

moment roller

8a, 8b is on first kind of height and position with respect to ground.Because spring 16 is between the outer wall of collar 17a and bottom groove 18, under the elastic acting force of spring 16, the connecting portion 19a of wheel shaft 9 is locked in the second gear groove 18b; Like this when the hand-held grass mower when ground running cuts, wheel shaft 9 is relatively-stationary with the position of connector 15 or pedestal 2, and roller 8a, then

outrigger shaft

9b, 9c pivot in ground and roll 8b relatively.When needs are regulated overhead height of roller, the elastic force that the operator only need overcome spring 16 imposes on an external force on roller 8a or outrigger shaft 9b, spring 16 is compressed, central shaft 9a will produce the displacement of skew second a gear groove 18b this moment, be shown in dotted line the position after wheel shaft 9 is offset among the figure, the connecting portion 19a that departed from the second gear groove 18b this moment can pivot around central shaft 9a, when connecting portion 19a is switched to the first gear groove 18a relative position, the operator discharges used external force, this moment, connecting portion 19a was under the effect of elastic force, can be engaged in automatically in the first gear groove 18a of horizontally set.At this moment,

roller

8a, 8b is conditioned on second kind of height and position with respect to the position on ground.

Shown in Fig. 5 A, 5B, when the connecting portion 19a of wheel shaft 9 was arranged in the first gear groove 18a of lateral arrangement, this moment, outrigger shaft 9b and central shaft 9a were in same horizontal level, as

roller

8a, 8b is when ground surface, and the height at its pivot center is mutually concordant with the central shaft 9a of wheel shaft 9 all the time.Usually, under normal cutting situation, the height of grass mower main body 10 relative pedestals 2 is constant when grass mower main body 10 is connected in pedestal 2, and promptly being used to the toolbox 14 that cuts is constant with respect to the height of pedestal; And when the relative pedestal 2 in the pivotal axis position of roller is regulated variation between first height and second height, make the toolbox 14 of grass mower variation also take place, so the adjusting of pair roller height has realized the cutting-height of grass has been produced variation with respect to the height on ground.

State when Fig. 6 shows roller 8a and is positioned at two kinds of differing heights positions, wherein the connecting portion 19a engaging lock of the roller 8a shown in the solid line is in the second gear groove 18b, and the connecting portion 19a engaging lock of the wheel 8a that is shown in dotted line is in the first gear groove 18a, can see clearly that from two kinds of different positions the relative pedestal 2 of height as the outrigger shaft 9b of roller pivotal axis has produced variation; When roller during in ground surface, the height between toolbox 14 and the idler wheel bottom has determined cutting-height.The operator is only by applying an external force on roller 9a, and just the height and position of pair roller is regulated like a cork, and this is simple in structure, and it is very convenient to operate, and it is low that manufacturing cost is heightened structure than traditional roller.

Claims

1. hand held cutting tool, comprise pedestal (2),, be arranged at the action bars (3) of pedestal with the tool body (10) that pedestal removably connects, roller (the 8a that is used for supporting base, 8b), described roller is provided with wheel shaft (9), it is characterized in that: described pedestal is provided with two gear groove (18a at least, 18b), the relative base pivot setting of described wheel shaft also selectively is engaged in described gear groove, when wheel shaft is engaged in the gear groove, and described wheel shaft and pedestal relative fixed.

2. hand held cutting tool according to claim 1 is characterized in that: described tool body (10) is a grass mower, the scalable adjusting of described handlebar.

3. hand held cutting tool according to claim 1 and 2 is characterized in that: (18a's described gear groove 18b) is interspersed.

4. hand held cutting tool according to claim 3 is characterized in that: the pivot center of the cross-point of described gear groove and wheel shaft (9) coincides.

5. hand held cutting tool according to claim 4 is characterized in that: described pedestal (2) comprise the connector (15) that is connected with action bars (3) and the housing that connects with tool body (2a, 2b).

6. hand held cutting tool according to claim 5 is characterized in that: described connector is provided with controlling organization (20), and described controlling organization can be selected connector and action bars to be locked or discharge.

7. hand held cutting tool according to claim 6 is characterized in that: (2a 2b) connects by threads turn described connector (15), and by position-limit mechanism the relative position of connector and housing is fixed with housing.

8. hand held cutting tool according to claim 7 is characterized in that: described wheel shaft (9) comprises central shaft (9a) and (9b, 9c), (8a 8b) is pivotally connected to outrigger shaft to described roller with the outrigger shaft of central axes.

9. hand held cutting tool according to claim 8 is characterized in that: connecting portion is set between described central shaft and the outrigger shaft, and (18a, 18b), described connecting portion selectively locks with described gear groove engagement.

10. hand held cutting tool according to claim 9 is characterized in that: spring (16) and collar (17a) are set on the described central shaft.