CN200969778Y

CN200969778Y - Safety control mechanism for pruning machine

Info

Publication number: CN200969778Y
Application number: CN 200620108585
Authority: CN
Inventors: 程蓓
Original assignee: NINGBO LAND POWER TOOLS Co Ltd
Current assignee: NINGBO LAND POWER TOOLS Co Ltd
Priority date: 2006-10-12
Filing date: 2006-10-12
Publication date: 2007-11-07
Anticipated expiration: 2016-10-12

Abstract

A branch pruning machine safety control mechanism is characterized in that a microswitch is installed and fixed in a main handle cavity, aiming at the contact point of the microswitch, the main handle is connected and installed with a main handle button, the outer lateral connection part of the main handle button is movably hinged with the main handle, the inner lateral movable part of the main handle button is movably hinged with a shift lever, the middle pressing part of the shift lever coordinates with the position limiting part of the main handle, in addition, the middle connection part of the shift lever is connected with one end of a flexible shaft, the other end of the flexible shaft is connected with the movable part of a side handle button, the outer lateral connection part of the side handle button is movably hinged on the side handle, the movable part of the shift lever pressingly coordinates with the contact point of the microswitch. The utility model has advantages of saving space, reducing cost, improving safety and reliability, and is suitable for prompting the use on branch pruning machines.

Description

The security control mechanism of pruner

Technical field

The utility model relates to a kind of pruner technical field, especially relates to pruner security control mechanism technical field.

Background technology

Pruner belongs to the cutting implement of gardening special use, can prune and repair for shrub, hedge, along with the continuous development of afforestation undertaking, pruner becomes a kind of indispensable greening instrument, and it has efficient height, advantage such as easy to use, but show also that in actual use security control is very important, if accidentally, maloperation or finger are accidental has easily touched power switch, causes pruner to work suddenly, injure human body, the pruner that for this reason has a lot of scientific and technical personnel's exploitations to make new advances.As the patent No. is the release mechanism that 032324154.1 Chinese patent " security control mechanism of pruner " has been reported a kind of pruner, it includes control pruner electromotor work whether microswitch, Top carry handle and assistant's handle are arranged respectively on the casing, it is characterized in that microswitch is fixed in the chassis cavity, contact at microswitch, the casing internal cavity is provided with fixed head, open the hole in the middle of the fixed head, the push rod that grafting can be up and down in the through hole, the push rod upper end is facing to the contact of microswitch, the push rod lower part is with the ears supporting plate that push rod is held up, the both sides of ears supporting plate are connected with hawser separately, each hawser by keeper after respectively with casing on the Top carry handle button of major-minor handgrip with assistant the movable end of button is connected, be supported with the push rod back-moving spring between push rod and the fixed head.It has bigger progress than traditional release mechanism, but also has a fly in the ointment, and is big as shared space, cause very big difficulty to exterior design, parts are many, and structure is simple inadequately, cost is than higher, so need us to do further improvement.

Summary of the invention

Technology to be solved in the utility model ask a topic be provide at existing background technology a kind of simple and practical, the space is saved greatly, manufacture and design easily, the security control mechanism of pruner that cost is low.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of security control mechanism of pruner, it includes control pruner electromotor work whether microswitch, Top carry handle and assistant's handle are arranged respectively on the casing, it is characterized in that microswitch is fixed in the Top carry handle cavity, contact at microswitch, on Top carry handle, be connected and installed with the Top carry handle button, the outside connecting portion of Top carry handle button and Top carry handle are hinged versatilely, the inboard movable position of Top carry handle button also is hingedly connected with driving lever versatilely, the middle contact part of driving lever cooperates with the spacing position of Top carry handle button, and, the middle interconnecting piece position of driving lever and an end of flexible axle link together, the flexible axle other end and assistant link together the movable position of button, assistant is hinged on assistant to the outside connecting portion of button versatilely last, and the driving lever movable end is conflicted with the contact of microswitch and cooperated.

Further improve, support and connection have back-moving spring between described driving lever and the Top carry handle cavity inner wall, make its action sensitive more light and handy.

Described Top carry handle button is below Top carry handle, and its outside connecting portion is movably hinged by pivot pin and Top carry handle, makes things convenient for the Top carry handle button to install like this.

On assistant's handle, its outside connecting portion is movably hinged by pivot pin and assistant handle described assistant button, left end perforate and flexible axle pull head be connected, make things convenient for assistant that button is installed like this.

Described chassis cavity the inside is provided with the keeper that soft rope is played guiding and positioning action, keeper is molded directly within on the plastic member of fixed motor in the casing, soft rope can be settled according to the chassis cavity actual conditions, the flexibility and the freedom of design have been improved, the convenient manufacturing.

At last, described flexible axle holder is fixed on the spacing position sidewall of Top carry handle button, and the middle interconnecting piece position of pull head and driving lever links together.

Compared with prior art, advantage of the present utility model is: because flexible axle can freely arrange in casing, so take up space smallerly, and provide convenience for the shape-designing of pruner, avoid the steel wire easy deformation to follow the string and caused the malfunctioning defective of interlinked mechanism, improved the reliability and the safety of pruner, entire mechanism is simpler, manufactures easily, parts are few, reduced cost, action stability and sensitivity are all more satisfactory, are adapted at promoting the use of on the pruner.

Description of drawings

The security control mechanism cutaway view (under the free state) of Fig. 1 the utility model pruner;

The security control mechanism cutaway view of Fig. 2 the utility model pruner (pressing under the state of Top carry handle button);

The security control mechanism cutaway view of Fig. 3 the utility model pruner (pressing assistant) under the state of button;

The security control mechanism cutaway view of Fig. 4 the utility model pruner (pressing Top carry handle and assistant) under the state of button;

The security control mechanism exploded view of Fig. 5 the utility model pruner.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Illustrate that as Fig. 1-2 the security control mechanism of this kind pruner is equipped with electric motor assembly in its casing, simultaneously casing 2 also has Top carry handle 3 and assistant respectively 4, and general Top carry handle 3 designs on the control crank of pruner, assistant 4 design and installations on handle.Control machine operation whether microswitch 1 is fixed in Top carry handle 3 cavitys, contact at microswitch 1, on Top carry handle 3, be connected and installed with Top carry handle button 5, Top carry handle button 5 is below Top carry handle 3, its outside connecting portion 16 is undertaken hinged versatilely by pivot pin and Top carry handle 3, the inboard movable position 19 of Top carry handle button 5 also is hingedly connected with driving lever 6 versatilely with pivot pin, the middle conflict position 7 of driving lever 6 cooperates with the spacing position 8 of Top carry handle button 5, and, the middle interconnecting piece position 9 of driving lever 6 links together with an end pull head of flexible axle 10, one end of flexible axle 10 is fixed on the Top carry handle button 5 by holder, and the sidewall by Top carry handle button 5, the other end pull head of flexible axle 10 and assistant link together the movable position 12 of button 11 in chassis cavity, assistant button 11 assistant 4 above, its outside connecting portion 13 is movably hinged 4 by pivot pin and assistant, and driving lever movable end 14 is conflicted with the contact of microswitch 1 and cooperated.Support and connection have back-moving spring 15 between the inwall of driving lever 6 and Top carry handle cavity.Casing 2 cavitys the inside is provided with the keeper 17 that flexible axle is played guiding and positioning action, and keeper 17 is molded directly within on the plastic member 18 of fixed motor in the casing.

Its operation principle and course of action are as follows:

(1) when Top carry handle button and assistant do not press button, promptly be under the free state, see Fig. 1, driving lever 6 is under back-moving spring 15 effects, be in the lower position state that resets, at this moment, the distant distance in contact of control electromotor work whether microswitch 1 above the movable end 14 of driving lever 6 leaves is so this moment, pruner was in off position;

(2) press and assistant when button is not pressed when the Top carry handle button, see Fig. 2, when Top carry handle button 5 is pressed, make naturally its free movable end both right-hand member lift, be in the high position state, because assistant does not press button 11 as yet, thus connected flexible axle 10 be failure to actuate, so driving lever 6 also is failure to actuate, some distances though Top carry handle button 5 has risen, but, make the movable end 14 of driving lever 6 still fail to touch the contact of microswitch 1, so pruner still can not worked because design is controlled well in advance;

(3) similarly, when assistant button is pressed and Top carry handle when not pressing, see Fig. 3, when assistant presses button 11, naturally make its free movable end both right-hand member depress, left end lifts, and spurs connected flexible axle 10 actions, and the other end of this flexible axle 10 just makes the movable end 14 of driving lever 6 clockwise rotate action, until spacing, be in the high position state, because Top carry handle button 5 do not press as yet, so its free movable end is failure to actuate, some distances though driving lever 6 has also risen a little, but, make the movable end 14 of driving lever 6 still fail to touch the contact of microswitch 1, so pruner can not worked yet because design is controlled well in advance;

(4) when Top carry handle button and assistant press button, see Fig. 4, when Top carry handle button 5 is pressed, naturally make its free movable end both right-hand member lift, simultaneously because assistant presses button 11, so connected flexible axle 10 also moves, the other end of this flexible axle 10 just spurs the movable end 14 of driving lever 6 and does action clockwise, be in the high position state, like this, because the Top carry handle button 5 of this moment is in horizontal high position state, make the very big distance of driving lever 6 risings, movable end 14 in conjunction with driving lever 6 also is in the high position state again, the movable end 14 of driving lever 6 can touch the contact of microswitch 1 at this moment, makes motor connecting power, at this moment, pruner just can be worked, and has ensured user's safety.

Claims

1, a kind of security control mechanism of pruner, it includes control pruner electromotor work whether microswitch (1), Top carry handle (3) and assistant are arranged (4) on the casing (2) respectively, it is characterized in that microswitch (1) is fixed in Top carry handle (3) cavity, contact at microswitch (1), on Top carry handle (3), be connected and installed with Top carry handle button (5), the outside connecting portion of Top carry handle button (5) and Top carry handle (3) are hinged versatilely, the inboard movable position of Top carry handle button (5) also is hingedly connected with driving lever (6) versatilely, the middle contact part (7) of driving lever (6) cooperates with the spacing position (8) of Top carry handle button, and, the middle interconnecting piece position (9) of driving lever (6) links together with an end of flexible axle (10), flexible axle (10) other end and assistant link together the movable position (12) of button (11), assistant is hinged on assistant to the outside connecting portion (13) of button (11) versatilely on (4), and driving lever movable end (14) is conflicted with the contact of microswitch (1) and cooperated.

2, security control mechanism according to claim 1 is characterized in that support and connection have back-moving spring (15) between described driving lever (6) and Top carry handle (3) cavity inner wall.

3, security control mechanism according to claim 1 and 2 is characterized in that described Top carry handle button (5) below Top carry handle (3), and its outside connecting portion (16) is movably hinged by pivot pin and Top carry handle (3).

4, security control mechanism according to claim 3, it is characterized in that described assistant button (11) assistant above (4), its outside connecting portion (13) is movably hinged (4) by pivot pin and assistant, and the left end perforate is connected with the pull head of flexible axle (10).

5, security control mechanism according to claim 4, it is characterized in that described casing (2) cavity the inside is provided with the keeper (17) that flexible axle (10) is played guiding and positioning action, keeper (17) is molded directly within on the plastic member (18) of fixed motor in the casing.

6, security control mechanism according to claim 5 is characterized in that described flexible axle (10) holder is fixed on spacing position (8) sidewall of Top carry handle button, and the middle interconnecting piece position (9) of pull head and driving lever links together.