CN2838252Y - Pruning machine - Google Patents

Abstract

The utility model relates to a pruning machine. A motor is arranged in a machine casing, an output shaft of the motor drives and is connected with an upper blade and a lower blade which make reciprocating motion outside the machine casing through a driving mechanism, press buttons of a power switch are arranged on handles of a casing body, and an assistant handle and a main handle are respectively connected to the front part and the back part of the machine casing. The utility model is characterized in that the main handle is connected with the machine casing through a rotary connecting structure, and a handle pushing button is arranged on the main handle. The front end of the handle pushing button is matched in an insertion and clamping mode with locking slots distributed on the connecting end surface of the machine casing, and meanwhile, a reset spring is connected and supported between the handle pushing button and the main handle. Because the main handle can be rotated to regulate positions according to actual demands, the blades of the pruning machine are positioned in a position which is more suitable for pruning branches. The utility model has convenient and easy operation, reduces workers' labor intensity, and is suitable for the popularization and the application of the pruning machine.

Description

Pruner

Technical field

The utility model relates to a kind of pruner.

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.It as the patent No. 95222327.9 Chinese patent " double insulation electric shrub and hedge trimmer "; it is provided with main power switch on the housing handle; motor is located in the housing; motor output shaft is a gear shaft; it and the gears engaged deceleration transmission that is bearing on the hollow shaft in the bearing; power passes to the eccentric cam that is attached thereto through hollow shaft; in the drive; bottom knife is reciprocating; it is characterized in that series connection one protection switch between main power switch and motor; this protection switch is made up of the housing switch cover that extends and the button and the microswitch that are hinged on the switch cover by one; the one side that it makes progress; but when protective cover is opened; finger or foreign matter are easy to touch, and make this protection mechanism lose effect.The patent No. is 01257686.7 Chinese patent " a kind of electric shrub and hedge trimmer " in addition, its crucial part has been to adopt one to push away a dual fail-safe switch of pressing, need push away the push button button, just can the depress switch button, make pruner work, casualty accident takes place so further, but in people's thought paralysis, still can produce maloperation.Though pruner had had Top carry handle and assistant the security control mechanism that cooperates in the past, it needs people's both hands to be held in the Top carry handle of pruner and assistant respectively last, and supress Top carry handle button and assistant button, pruner could be worked, so safety is better, more difficult hand and the own health of hindering, but traditional mechanism, the Top carry handle button is the interlock of button to adopt to be connected steel wire with assistant, so there is following problem, big as shared space, cause very big difficulty to exterior design, poor reliability, the distortion of steel wire or follow the string, cause mechanism malfunctioning easily, so need us to do further improvement.Pruner also exists traditional defective in addition, 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 has 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 connected to microswitch on its power circuit of described motor, microswitch is fixed in the chassis cavity, contact at microswitch, the casing internal cavity is provided with fixed mount, open the hole in the middle of the fixed mount, 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, wherein a hawser is connected with the movable end of arm-tie after by keeper, the bottom of arm-tie couples together last assistant to button by connector and assistant, another hawser is connected with the movable end of Top carry handle button on the Top carry handle after by keeper, be supported with the push rod back-moving spring between push rod and the fixed mount, because cable wire can freely be arranged in casing, so it is smaller that institute takes up space, 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, the reliability and the safety of pruner have been improved, entire mechanism is succinct, manufactures easily, and action stability and sensitivity are all more satisfactory.

As improvement, described Top carry handle button is below Top carry handle, its right-hand member position is movably hinged by pivot pin and Top carry handle, left end cooperates spacing with the cavity of casing side, Top carry handle button left end perforate simultaneously is connected with the pull head of Top carry handle hawser, the perforate of described arm-tie right-hand member is connected the pull head of hawser with assistant, to make things convenient for Top carry handle button and assistant the assembling production of button.

Be connected between above-mentioned ears supporting plate both sides and the fixed mount and be supported with Top carry handle hawser back-moving spring and assistant the hawser back-moving spring, and Top carry handle hawser back-moving spring and assistant are enclosed within the hawser back-moving spring separately on the hawser, and hawser passes two side perforations on the fixed mount respectively, can improve operating sensitivity and reliability like this.

Above-mentioned hawser is with sleeve pipe, and each end of sleeve pipe is fixed on unit sidepiece or the casing side inner walls by the flexible axle holder, and the hawser to transmission plays necessary protective effect like this, avoids accidental damage, has improved service life.

Above-mentioned chassis cavity the inside is provided with the keeper that hawser is played location and guiding, keeper is molded directly within on the interior plastic member of casing, hawser can be settled according to the chassis cavity actual conditions, improved the flexibility and the freedom of design, the convenient manufacturing.

Above-mentioned push rod bottom forms the bulge loop that supports for the push rod back-moving spring, and match with the arcuation teat of ears supporting plate on being enclosed within push rod in the bulge loop bottom surface simultaneously, can improve the flexibility that the ears supporting plate tilts like this.

The both sides of above-mentioned ears supporting plate are used for being connected and fixed the Top carry handle hawser and assistant is the position of hawser end a symmetric design, have made things convenient for the manufacturing.

Above-mentioned push rod top is provided with the push rod cap, and the push rod cap generally adopts elastomeric material to make, and it prolongs the service life of microswitch to necessary protective effect.

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;

Fig. 2 is a pruner main body side view of the present utility model;

Fig. 3 is that the A-A of Fig. 2 is to cutaway view;

Fig. 4 is a pruner main body cutaway view of the present utility model;

Fig. 5 analyses figure for pruner main body solid of the present utility model;

Fig. 6 analyses figure (only Top carry handle button down state) for pruner main body solid of the present utility model;

Fig. 7 analyses figure (only assistant is the button down state) for pruner main body solid of the present utility model;

Fig. 8 analyses figure (major and minor handgrip button is down state all) for pruner main body solid of the present utility model.

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 left and right casing 28,7, motor, transmission mechanism, upper and lower blade, Top carry handle 18, assistant critical piece such as 1, and as traditional pruner, left and right casing has been formed whole casing 22; Motor is to be provided with to be installed in the casing, there is reciprocating upper and lower blade the casing outside, 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 invention, carried out deep description with regard to no longer launching here.

Assistant 1 and Top carry handle 18 be connected to the front and rear of casing 22, its crucial part is that Top carry handle 18 is to be connected with casing 22 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, the center that extend into the connecting portion surface of the end surface of 22 li of casings and casing 22 at Top carry handle 18 couples together with pivot pin, Top carry handle 18 is rotatably connected to casing 22, can certainly be that Top carry handle 18 extend between the connecting portion inner surface of the end surface of 22 li of casings and casing 22 bearing is installed, they are rotatably connected to together.The upper surface of Top carry handle 18 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 18 and install handgrip push button 15, and accordingly, also being distributed with a plurality of lock slots 30 on casing connects end face carries out plug-in card with the front end of handgrip push button 15 and cooperates, be connected the back-moving spring 16 that is supported with the handgrip push button between handgrip push button 15 and the Top carry handle 18, thereby constitute latch-up structure.Use for convenience and actual manufacturing production, lock slots 30 is the top that is evenly distributed in casing 22 connecting portion circumference in angle of 45 degrees, sees Fig. 3.Simultaneously also be to improve safety for a step, 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 15 by shoulder 12, with the Top carry handle button by shoulder 14 conflicts that match, see Fig. 4, when Top carry handle button 17 is when pressing, Top carry handle button 17 overcomes the elastic force of its back-moving spring, move upwards, the Top carry handle button is in than higher location status by shoulder 14, stopped retreating of handgrip push button 15, so, when the Top carry handle button is pressed, be exactly that pruner is when being in pruning work, the workman can't press rollback with handgrip push button 15, therefore, Top carry handle 18 just can't unlock with casing 22, 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, make the Top carry handle button be in lower location status by shoulder 14, can not stop retreating of handgrip push button 15, so, when the Top carry handle button is not pressed, be exactly that pruner is not when being in pruning work, the workman just can press rollback with handgrip push button 15, and the end of handgrip push button 15 is withdrawed from outside the lock slots 30 of casing connection end face, has removed locking, thereby Top carry handle 18 can be rotated switch to another gear positions, decontrol handgrip push button 15, make the handgrip push button under the effect of back-moving spring 16, once more plug-in card to the corresponding lock slots 30 of this gear positions in lock.

This pruner has also been installed a kind of new security control mechanism, as Fig. 4-8 signal, the security control mechanism of this kind pruner, electric machine assembly is installed in 22 li of casings, casing also has Top carry handle 18 and assistant respectively 1 simultaneously, general Top carry handle 18 designs on the control crank of pruner, assistant 1 design and installation on handle.Control machine operation whether microswitch 9 is fixed in the chassis cavity; contact at microswitch; the casing internal cavity is provided with fixed mount 20 near the electric machine assembly position; open the hole in the middle of the fixed mount 20; the both sides left and right symmetrically has the perforation that supplies Top carry handle hawser and assistant that hawser is passed; the push rod 21 that grafting can be up and down in the intermediate throughholes; the push rod cap 23 that push rod 21 upper ends have flexible material to make; and facing to the contact of microswitch 9; general flexible material can adopt rubber to make; make push rod cap 23 play necessary protective effect, prolong the service life of microswitch.Push rod 21 lower parts form bulge loop, are supported with push rod back-moving spring 25 between bulge loop and the fixed mount 20.Push rod below the bulge loop partly is with the ears supporting plate 26 that push rod can be held up, and ears supporting plate 26 centre positions form the arcuation teat, cooperate with the bottom surface of bulge loop, improve the sensitivity that the ears supporting plate is made tilting action.The both sides left and right symmetrically of ears supporting plate 26 is connected with separately Top carry handle hawser 11 and assistant hawser 5, there are Top carry handle hawser back-moving spring 24 and assistant that hawser back-moving spring 27 is enclosed within separately on the hawser simultaneously, be supported between ears supporting plate 26 both sides and the fixed mount 20, improved the flexibility that resets of ears supporting plate.After each hawser passes two side perforations on the fixing frame plate, behind keeper in the chassis cavity, wherein a hawser is connected with the movable end of arm-tie 3, the bottom of arm-tie 3 couples together last assistant to button 2 by connector such as pivot pin and assistant, another hawser is connected with the movable end of Top carry handle button 17 on the Top carry handle after by keeper, be supported with push rod back-moving spring 25 between push rod and the fixed mount, make Top carry handle button and assistant can drive the action of button certain action of push rod.The layout of hawser in chassis cavity for convenience generally needs to adopt the keeper of guiding and positioning action, keeper to be molded directly within on the plastic member in the casing, makes the transmission of hawser power more smooth and easy, the minimizing resistance.In order to protect hawser, hawser is with sleeve pipe 8,10, and each end of sleeve pipe is fixed on the inwall of unit sidepiece or casing side cavity by flexible axle holder 6,13.The Top carry handle button is design like this, this Top carry handle button 17 is arranged in below the Top carry handle 18, its right-hand member position is movably hinged by pivot pin 19 and Top carry handle 18, left end cooperates spacing with the cavity of casing side, Top carry handle button 17 left end perforates simultaneously are connected with the pull head of Top carry handle hawser 11, the left end of Top carry handle button can suitably rotate up and down like this, can be limited in again in the local space, and install very convenient.Accordingly, assistant button 2 design assistant 1 above, the position, intermediate portion is movably hinged 1 with assistant by pivot pin 29, simultaneously, couple together with the arm-tie 3 of the inside, arm-tie 3 right-hand member perforates are connected the pull head 4 of hawser with assistant, make assistant button is stressed when pressing down, the right-hand member of arm-tie 3 is pulled naturally, thereby the pulling assistant makes action to hawser 5.

Its operation principle and course of action are as follows:

(1) when Top carry handle button 17 and assistant do not press button 2, promptly be under the free state, see Fig. 4,5, ears supporting plate 26 its left and right sides Top carry handle hawser back-moving spring 24 and assistant 27 effects of hawser back-moving spring under, be in the lower position state that resets, this moment push rod 21 because and be supported with push rod back-moving spring 25 between the fixed mount 20, make the push rod cap 23 on the push rod leave the top distant distance in contact of controlling electromotor work whether microswitch 9, so this moment, pruner was in off position;

(2) press and assistant when button 2 is not pressed when Top carry handle button 17, see Fig. 6, when the Top carry handle button is pressed, naturally make its free end both left end lift, spur connected Top carry handle hawser 11 actions, the other end of this hawser just spurs the upwards action of right side of ears supporting plate 26, be in the high position state, because assistant does not press button 2 as yet, so connected assistant is failure to actuate hawser 5, so the left side of ears supporting plate 26 is in the lower position that resets originally, make the arcuation teat of ears supporting plate 26 in the process of moving up, head on the bulge loop of push rod 21, push rod 21 is also lifted a little, tilt simultaneously, some distances though push rod 21 has also risen a little, be equivalent to mediate, but, make the push rod cap 23 of push rod 21 still fail to touch the contact of microswitch 9, so pruner still can not worked because design is controlled well in advance;

(3) similarly, when assistant presses 2 and Top carry handle button 17 when not pressing to button, see Fig. 7, when assistant presses button, the right-hand member of arm-tie 3 is pulled naturally, spur connected assistant hawser 5 actions, the other end of this hawser just spurs the upwards action of left side of ears supporting plate 26, be in the high position state, because Top carry handle button 17 is not pressed as yet, so connected hawser is failure to actuate, so the right side of ears supporting plate 26 is in the lower position that resets originally, make the arcuation teat of ears supporting plate 26 in the process of moving up, head on the bulge loop of push rod 21, push rod 21 is also lifted a little, tilt simultaneously, some distances though push rod 21 has also risen a little are equivalent to mediate, because design is controlled well in advance, pruner make the push rod cap 23 of push rod still fail to touch the contact of microswitch 9, so also can not worked;

(4) when Top carry handle button 17 and assistant press button 2, see Fig. 8, when the Top carry handle button is pressed, naturally make its free end both left end lift, spur connected Top carry handle hawser 11 actions, the other end of this hawser just spurs the upwards action of right side of ears supporting plate 26, be in the high position state, simultaneously because assistant also presses button 2, so connected assistant also moves hawser 5, the other end of this hawser just spurs the upwards action of left side of ears supporting plate 26, be in the high position state, like this, the arcuation teat of ears supporting plate 26 heads on the bulge loop of push rod 21 in the process of moving up, push rod 21 is lifted, because the ears supporting plate of this moment is in horizontal high position state, do not tilt, the very big distance so push rod 21 raises, theoretical calculating gone up 2 times that can reach rising distance when having only a handgrip button to press, and is equivalent to be in the high position state, and the push rod cap 23 of push rod can touch the contact of microswitch 9 at this moment, make motor connecting power, at this moment, pruner just can be worked, and has ensured user's safety.

Claims (10)

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 connected to microswitch on its power circuit of described motor, microswitch is fixed in the chassis cavity, contact at microswitch, the casing internal cavity is provided with fixed mount, open the hole in the middle of the fixed mount, 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, wherein a hawser is connected with the movable end of arm-tie after by keeper, the bottom of arm-tie couples together last assistant to button by connector and assistant, and another hawser is connected with the movable end of Top carry handle button on the Top carry handle after by keeper, is supported with the push rod back-moving spring between push rod and the fixed mount.

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 movably hinged by pivot pin and Top carry handle, left end cooperates spacing with the cavity of casing side, Top carry handle button left end perforate simultaneously is connected with the pull head of Top carry handle hawser, and the perforate of described arm-tie right-hand member is connected the pull head of hawser with assistant.

7, pruner according to claim 5, it is characterized in that being connected between described ears supporting plate both sides and the fixed mount and be supported with Top carry handle hawser back-moving spring and assistant the hawser back-moving spring, the position that the both sides of ears supporting plate are used for being connected and fixed major and minor handgrip hawser end is a symmetric design.

8, pruner according to claim 7 is characterized in that described Top carry handle hawser back-moving spring and assistant are enclosed within the hawser back-moving spring separately on the hawser, and hawser passes two side perforations on the fixed mount respectively simultaneously.

9, pruner according to claim 5 is characterized in that described hawser is with sleeve pipe, and each end of sleeve pipe is fixed on unit sidewall or the casing side inner walls by the flexible axle holder.

10, pruner according to claim 5 is characterized in that described push rod bottom forms the bulge loop that supports for the push rod back-moving spring, and match with the arcuation teat of ears supporting plate on being enclosed within push rod in the bulge loop bottom surface simultaneously.

Images