CN2737138Y

CN2737138Y - Machine for pruning tree branches

Info

Publication number: CN2737138Y
Application number: CN 200420107583
Authority: CN
Inventors: 程蓓; 肖贤刚
Original assignee: NINGBO AILEJI ELECTRIC TOOL CO Ltd
Current assignee: NINGBO AILEJI ELECTRIC TOOL CO Ltd
Priority date: 2004-10-29
Filing date: 2004-10-29
Publication date: 2005-11-02
Anticipated expiration: 2014-10-29

Abstract

The utility model relates to a pruning machine. A motor of the utility model is arranged in a casing, an output shaft of the motor is connected with and drives an upper and a lower blades which move in a reciprocating mode out of the casing through a driving mechanism. Buttons of a power switch are arranged on handles of the casing, and the assistant handle and the main handle are respectively connected to the front part and the rear part of the casing. The utility model is characterized in that the main handle is connected with the casing through a rotatable connecting structure, and a handle pushing button is arranged on the main handle. The front end of the handle pushing button and locking slots distributed on the connecting end face of the casing are matched in an inserting and clamping mode, and at the same time, a return spring is connected and supported between the handle pushing button and the main handle. The main handle can rotate to regulate the position according to actual demand, therefore, the blades of pruning machine are positioned in positions which are more suitable for pruning branches, the utility model is more convenient and easy in use, and workers' labor intensity is reduced. The utility model is suitable for popularization and use on pruning machines.

Description

Pruner

Technical field

The utility model relates to the pruner technical field.

Background technology

Pruner belongs to the cutting implement of gardening domain-specific, can be shrub, hedge is pruned and is repaired, continuous development along with motherland's afforestation undertaking, pruner becomes a kind of indispensable greening instrument, it has the efficient height, advantage such as easy to use, but show that in actual use traditional pruner also needs further improvement, it as the patent No. 03231441.8 Chinese patent " 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 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 is by leading respectively with on the casing behind the keeper, the Top carry handle button of assistant's handle is connected the movable end of button with assistant, be supported with the push rod back-moving spring between push rod and the fixed head, it has improved the dependability and the safety of pruner widely, but it also exists the defective of traditional pruner, as Top carry handle is to link together with casing, can not rotate or rotate adjusting, just there is a drawback in this, because the workman is when using pruner that branch is pruned, usually need to swing pruner to some obliquities according to actual conditions, make the blade of pruner more can prune or shear branch, so, workman's the hand change place that need ceaselessly revolve, adapt to practical matter, the result causes the inconvenience in the use, and also increased labour intensity in a way, especially in some cases, relying on hand to make pruner be in a correct position is very difficult thing, therefore needs further to improve.Similar problem also exists on some other patented technology.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of pruner at existing background technology, its Top carry handle can rotate adjusting position according to actual needs, thereby the blade that makes pruner is in some positions that is fit to pollard more, more convenient to use light, reduce labor strength.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of pruner, it is installed in the motor setting in the casing, the output shaft of motor by transmission mechanism connect to drive outside casing reciprocating on, bottom knife, the handgrip of housing is provided with the button of power switch, assistant's handle and Top carry handle are connected to the front and rear of casing, it is characterized in that: Top carry handle is to be connected with casing by the structure that is rotatably connected, and Top carry handle is provided with the handgrip push button, the front end of handgrip push button be distributed in casing and be connected lock slots on the end face and carry out plug-in card and cooperate, be connected between handgrip push button and the Top carry handle simultaneously and be supported with back-moving spring.

As specific embodiment, the above-mentioned structure that is rotatably connected can adopt rotating shaft to carry out connection structure connecting or bearing carries out connection structure connecting.

Useful is that above-mentioned lock slots is the top that is evenly distributed in circumference in angle of 45 degrees, makes the workman can freely select to use on above-mentioned gear.

What be highly profitable is, above-mentioned handgrip push button be connected with below it with the Top carry handle button by shoulder match conflict by takeing on, could move backward when the handgrip push button being had only under the state that the Top carry handle button is not pressed be pruner not worked as yet, avoid causing pruner to change the Top carry handle position in working order down, thereby the casualty accident that meets accident has more been increased the safety in utilization of pruner.

Very perfect design is, be mounted with microswitch in the above-mentioned Top carry handle, Top carry handle connects mobilizable Top carry handle button below by pivot pin simultaneously, be supported with Top carry handle push-button reset spring between Top carry handle button middle part and the Top carry handle, Top carry handle button inboard also is connected with rotating driving lever simultaneously, and be equipped with limiting component, an end that makes driving lever cooperates contact with microswitch or separates, the driving lever other end is connected with cable wire, cable wire is connected with the arm-tie upper end of a side position in casing by the space in the casing, and arm-tie by rotating shaft and assistant outside casing button activity link together, it has only when Top carry handle button and assistant press when putting in place pruner to button and just can work, so, further improved safety, and cable wire can arrange freely in casing that institute takes up space smaller, for the shape-designing of pruner provides convenience, avoided the steel wire easy deformation to follow the string and caused the malfunctioning defective of interlinked mechanism.

At last, its cavity the inside of above-mentioned casing is provided with the keeper that the location cable wire is played guiding and positioning action, and keeper is molded directly within on the plastic member, the convenient manufacturing.

Compared with prior art, advantage of the present utility model is: because Top carry handle can be rotated according to actual needs, make the blade of pruner be easy to adjust to a position that is fit to pollard more, need not the workman and swing wrist or lacking practice and skill hard place is transformed into a certain position, so more convenient to use, alleviated working strength of workers, and structural design advantages of simple is very made easily and is used, and cost is low, safety is also more increased, and is adapted at promoting the use of on the pruner.

Description of drawings

Fig. 1 is a pruner main body stereogram of the present utility model (bottom knife in the omission);

Fig. 2 is a pruner agent structure cutaway view of the present utility model;

Fig. 3 is a pruner sectional view of main part of the present utility model;

Fig. 4 is pruner agent structure cutaway view of the present utility model (the Top carry handle button is not pressed assistant the button down state);

Fig. 5 is pruner agent structure cutaway view of the present utility model (the Top carry handle button is pressed assistant button down state not as yet);

Fig. 6 is pruner agent structure cutaway view of the present utility model (a Top carry handle button press with assistant button also down state).

Embodiment

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

As Fig. 1～3 signal, this kind pruner, it includes casing 8, motor, transmission mechanism, upper and lower blade, Top carry handle 19, assistant critical piece such as 1, as traditional pruner, motor is to be provided with to be installed in the casing 8, there is reciprocating upper and lower blade casing 8 outsides, the output shaft of motor connects the upper and lower blade that drives outside casing by transmission mechanism, transmission mechanism can reference and is used the transmission mechanism of traditional pruner, because be not inventive point of the present utility model, carried out deep description with regard to no longer launching here.

Assistant 1 and Top carry handle 19 be connected to the front and rear of casing 8, its crucial part is that Top carry handle 19 is to be connected with casing 8 by the structure that is rotatably connected, and this structure that is rotatably connected can adopt rotating shaft to carry out connection structure connecting or bearing carries out connection structure connecting.Present embodiment is exactly an example that adopts the syndeton of rotating shaft, and the center that extend into the connecting portion surface of end surface in the casing and casing 8 at Top carry handle 19 couples together with pivot pin, and Top carry handle 19 is rotatably connected to casing 8.The upper surface of Top carry handle 19 has the push button opening, can also set up chute in the time of necessary, make to be provided with on the Top carry handle 19 and install handgrip push button 11, and accordingly, connect at casing 8 and also to be distributed with a plurality of lock slots 20 on the end faces and to carry out plug-in card with the front end of handgrip push button 11 and cooperate, be connected the back-moving spring 13 that is supported with the handgrip push button between handgrip push button 11 and the Top carry handle 19, thereby constitute latch-up structure.Use for convenience and actual manufacturing production, lock slots 20 is the top that is evenly distributed in casing 8 connecting portion circumference in angle of 45 degrees, sees Fig. 3.Simultaneously also be in order further to improve safety, avoid pruner to change the Top carry handle position in working order down, casualty accident takes place, so, formed connected being connected to below the handgrip push button 11 by shoulder 21, with the Top carry handle button by shoulder 22 conflicts that match, see Fig. 6, when Top carry handle button 17 is when pressing, Top carry handle button 17 overcomes the elastic force of its back-moving spring 16, move upwards, the Top carry handle button is in than higher location status by shoulder 22, stopped retreating of handgrip push button 11, so, when Top carry handle button 17 is pressed, be exactly that pruner is when being in pruning work, the workman can't press rollback with handgrip push button 11, therefore, Top carry handle 19 just can't unlock with casing 8, can not rotate dislocation, have only on the contrary when Top carry handle button 17 be when not pressing, Top carry handle button 17 moves downwards under the resilient force of its back-moving spring 16, make the Top carry handle button be in lower location status by shoulder 22, can not stop retreating of handgrip push button 11, so, when Top carry handle button 17 is not pressed, be exactly that pruner is not when being in pruning work, the workman just can press rollback with handgrip push button 11, and the end of handgrip push button 11 is withdrawed from outside the lock slots 20 of casing connection end face, has removed locking, thereby Top carry handle 19 can be rotated switch to another gear positions, decontrol handgrip push button 11, make handgrip push button 11 under the effect of back-moving spring 13, once more plug-in card to the corresponding lock slots 20 of this gear positions in lock.

This pruner has also been installed a kind of new security control mechanism, as Fig. 2,4,5,6 signals, general Top carry handle 19 designs on the control crank of pruner, assistant 1 design and installation on handle.Control machine operation whether microswitch 15 is fixed on 19 li cavitys of Top carry handle, and Top carry handle 19 following sides are connected with pivot pin 18, connect mobilizable Top carry handle button 17 by this pivot pin 18.Top carry handle button 17 inboards are centre position moulding reference column roughly, on overlap Top carry handle push-button reset spring 16, Top carry handle 19 has spring base in correspondence position design, Top carry handle push-button reset spring 16 just is supported on reference column and the spring base.17 li opposite sides of Top carry handle button are connected with rotating driving lever 14 by pivot pin 12, and an end of driving lever 14 and microswitch 15 cooperate contact or separate, and the other end forms holder, and the pull head positioning and fixing of cable wire by the one end is in the holder of driving lever.In order to have improved the reliability of release mechanism, this end of cable wire is installed with driving lever back-moving spring 10, make this spring be supported on position between the end of driving lever and Top carry handle button, and forming spacing floor 23 near holder place Top carry handle button as locating part, can further guarantee under the state that Top carry handle button 17 is not pressed like this, no matter whether assistant presses button 2, and driving lever 14 ends all can not touch microswitch 15, have avoided casualty accident.Cable wire 6 is with sleeve pipe 9, under the guide rib guide effect that is provided with in the enclosure space, pass the spatial joint clearance in the casing, be connected, and arm-tie 4 links together button 2 versatilely by rotating shaft 3 and the assistant outside casing with arm-tie 4 upper ends of a side position in casing.Cable wire 6 one ends pass flexible axle holder 7 backs that are fixed in the casing and are fixed in the holder of arm-tie by pull head, and another flexible axle holder of cable wire is fixed on the Top carry handle button end.The assistant that assistant also is fixed on casing to position, button 2 the inside by pivot pin versatilely is on 1, and near this side, assistant is connected with assistant to button 2 and assistant the push-button reset spring between 1, make assistant normally be in not down state to button.Its operation principle is such, when Top carry handle button 17 and assistant did not press button 2, this moment, the end of driving lever 14 was away from microswitch 15 under 10 effects of driving lever back-moving spring, so microswitch 15 can not be touched, pruner can not worked, and its structure is referring to Fig. 2; When Top carry handle button 17 is pressed and assistant when button 2 is not pressed, though overcome the elastic force of Top carry handle push-button reset spring 16 rotates owing to Top carry handle button 17, make driving lever 14 ends further near microswitch, but because assistant is not pressed button 2 as yet, make driving lever 14 under the effect of driving lever back-moving spring 10 away from microswitch 15, the end of driving lever 14 still can not touch microswitch 15, microswitch can not be touched like this, pruner still can not worked, and its structure is referring to Fig. 5; When Top carry handle button 17 is not pressed and assistant when button 2 is pressed, the end of driving lever 14 is under the pulling of cable wire, can overcome the elastic force of driving lever back-moving spring 10 and rotate, but, can not rotate too much, under the situation that Top carry handle button 17 is not pressed owing to be subjected to the restriction of spacing floor 23, the end of driving lever 14 is still with a certain distance from microswitch 15, microswitch 15 can not be touched, and pruner can not worked, and its structure is referring to Fig. 4; When Top carry handle button 17 and assistant press button 2, Top carry handle button 17 has overcome the elastic force of main push-button reset spring 16 and has rotated, the end that makes driving lever 14 is near microswitch 15, simultaneously because the pulling function of cable wire 6, make driving lever 14 also overcome the elastic force of driving lever back-moving spring 10 and rotate, make the end of driving lever 14 can touch microswitch 15, at this moment, pruner just can be worked, and has ensured safety in utilization, and its structure is referring to Fig. 6.

Claims

1, a kind of pruner, it is installed in the motor setting in the casing, the output shaft of motor by transmission mechanism connect to drive outside casing reciprocating on, bottom knife, the handgrip of housing is provided with the button of power switch, assistant's handle and Top carry handle are connected to the front and rear of casing, it is characterized in that: Top carry handle is to be connected with casing by the structure that is rotatably connected, and Top carry handle is provided with the handgrip push button, the front end of handgrip push button be distributed in casing and be connected lock slots on the end face and carry out plug-in card and cooperate, be connected between handgrip push button and the Top carry handle simultaneously and be supported with back-moving spring.

2, pruner according to claim 1 is characterized in that the described structure that is rotatably connected can adopt rotating shaft to carry out connection structure connecting or bearing carries out connection structure connecting.

3, pruner according to claim 2 is characterized in that described lock slots is the top that is evenly distributed in circumference in angle of 45 degrees.

4, pruner according to claim 3, it is characterized in that described handgrip push button be connected with below it with the Top carry handle button by shoulder match conflict by takeing on.

5, pruner according to claim 4, it is characterized in that being mounted with microswitch in the described Top carry handle, Top carry handle connects mobilizable Top carry handle button below by pivot pin simultaneously, be supported with Top carry handle push-button reset spring between Top carry handle button middle part and the Top carry handle, Top carry handle button inboard also is connected with rotating driving lever simultaneously, and be equipped with limiting component, an end that makes driving lever cooperates contact with microswitch or separates, the driving lever other end is connected with cable wire, cable wire is connected by the arm-tie upper end of the space in the casing and a side position in casing, and arm-tie by rotating shaft and assistant outside casing button activity link together.

6, pruner according to claim 5, it is characterized in that described Top carry handle button is below Top carry handle, its right-hand member position is connected with Top carry handle versatilely by pivot pin, left end cooperates spacing with the cavity of casing side, driving lever left end perforate simultaneously is connected with the pull head of cable wire, be with the driving lever back-moving spring on the pull head, the driving lever back-moving spring is supported between driving lever end and the Top carry handle button end.

7, pruner according to claim 6 is characterized in that described cable wire is with sleeve pipe, and each end of sleeve pipe is fixed on the sidepiece and Top carry handle button end of unit by the flexible axle holder.

8, pruner according to claim 7 is characterized in that its cavity the inside of described casing is provided with the keeper that the location cable wire is played guiding and positioning action, and keeper is molded directly within on the plastic member.