CN201152949Y

CN201152949Y - Branch pruning machine

Info

Publication number: CN201152949Y
Application number: CNU2008200825983U
Authority: CN
Inventors: 李志军; 杨瑞
Original assignee: NINGBO AILEJI ELECTRIC TOOL CO Ltd
Current assignee: NINGBO AILEJI ELECTRIC TOOL CO Ltd
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2008-11-19
Anticipated expiration: 2018-01-25

Abstract

The utility model discloses a pruning machine the electromotor subassembly (5) of which is provided with a steel-wire flexible shaft (7), an upright stanchion (12), a switch jacking block (13), a main button (2), a wane (8) and a microswitch (6) on the left side; the electromotor subassembly (5) is provided with a pull board (10) and an assistant button (4) on the right side; the two ends of the steel-wire flexible shaft (7) are respectively connected with the right end of the main button (2) and the left end of the wane (8); a rigid metal rod (9) is connected between the right end of the wane (8) and the upper end of the pull board (10); the lower ends of the pull board (10) and the assistant button (3) are simultaneously hinged on a casing (11); the wane (8) is sleeved on the upright stanchion (12) which is sleeved with the switch jacking block (13) in a sliding way; the microswitch (6) is arranged above the switch jacking block (13). The pruning machine has the advantages that not only the electromotor can be started or shut down with less force, but also the heat deformation of the transmission pieces caused by the heating of the electromotor can be prevented.

Description

Pruner

Technical field:

The utility model relates to a kind of pruner that branch, shrub or hedge etc. are pruned or repaired of being used for.

Background technology:

Consider that for safety factor prior art pruner great majority need both hands to operate simultaneously just to machine, promptly major and minor button must be realized linking and just can stir the microswitch in the casing and start pruner.The utility model patent that the name that the applicant authorized on June 30th, 2004 is called the security control mechanism of pruner just disclose a kind of forward and backward handgrip and all used Bowden cable (also can be described as the cable wire flexible axle) transmission to jointly control the structure of the pruner of machine, and it includes whether be installed in the interior microswitch of Top carry handle, be hinged on main button below the Top carry handle, be hinged on assistant the secondary button of an end and the driving lever that is hinged on main button inboard of control pruner motor work; Be supported with main push-button reset spring between described main button inboard and the Top carry handle; One end and the microswitch of described driving lever cooperates contact or separates, and its other end is fixedlyed connected with the pull head of cable wire one end; The pull head of the described cable wire other end is fixedlyed connected with secondary button after passing the flexible axle holder that is fixed in the casing; Thereby described cable wire is with a soft sleeve pipe outward and forms the cable wire flexible axle; Also be provided with guide rib in the described enclosure space, guide rib can play the guiding role to the layout of cable wire flexible axle.

It is main that prior art adopts Bowden cable to realize, there are following two weak points in actual applications in the pruner of secondary button interlock: 1, Bowden cable be a kind of can any direction bending with driving member around various more obstacles, in pruner, though Bowden cable can utilize the various parts of flexural property in getting over pruner of self to realize main, the interlock of secondary button, yet, because Bowden cable bending resistance big (especially its bending resistance is bigger after corrosion), and cooperate the driving lever that contacts or separate to be subjected to the arm of force of secondary button acting force far away with microswitch, thereby cause the user to have brought certain inconvenience to operation with bigger power ability opening and closing machine; 2, the motor in the pruner normal heating phenomenon can occur in the work for a long time, will invar silk flexible axle resistance when temperature is too high excessive and make the Bowden cable driving member and the working of plastics that is connected with Bowden cable stressed thermal deformation takes place and influences their normal gearings, thereby finally hinder the normal opening and closing of pruner, reduced the reliability that pruner uses.

The utility model content:

The technical problems to be solved in the utility model is, provide a kind of need to use the less power just can the opening and closing electric motor assembly, thereby driving member and other working of plastics of being connected with driving member are at the metapyretic stress deformation of machine when reducing machine works, effectively guarantee normally opening and closing of motor, improve the pruner of machine dependability.

Technical solution of the present utility model is that a kind of pruner with following structure is provided: it comprises that left end is hinged on main button below the Top carry handle, assistant, secondary button and the microswitch that is electrically connected with electric machine assembly; The right-hand member of described main button is connected with an end of Bowden cable; The other end of described Bowden cable is connected the left end of seesaw; The right-hand member of described seesaw is connected with the left end of rigid metal bar; The right-hand member of described rigid metal bar is connected the upper end of arm-tie; The lower end of described arm-tie is hinged on the casing, and is connected with secondary button lower end; Described seesaw is enclosed within on the push rod slidably; Be with a switch jacking block on the push rod of seesaw top; Described microswitch is positioned at the top of switch jacking block; Described Bowden cable, push rod, switch jacking block, main button, seesaw and microswitch all are positioned at the left side of electric motor assembly; Described arm-tie and secondary button are positioned at the right of electric motor assembly.

After adopting above structure, compared with prior art, the utlity model has following advantage:

1, in the utility model pruner, do not realize interlock owing to all use Bowden cable between main button and the secondary button, be to adopt a Bowden cable and a rigid metal bar to realize main simultaneously between them, interlock between the secondary button, and push rod, the switch jacking block, main button, seesaw and microswitch all are positioned at the left side of electric motor assembly, therefore, the length that is connected the Bowden cable between main button right-hand member and the seesaw left end in the utility model pruner is very short, and its bend ratio is less, and its bending resistance compared with prior art reduces greatly; What then adopt between described seesaw right-hand member and the arm-tie upper end is that a rigid metal bar substitutes Bowden cable and realizes transmission, therefore there is not bending resistance between seesaw right-hand member and the arm-tie, and the setting of rigid metal bar makes seesaw also shortened greatly by the arm of force of secondary button acting force, so, when use the utility model pruner, we only need to use just energy opening and closing electric motor assembly of less power;

2, because the rigid metal bar in the utility model pruner is can stressed generation thermal deformation, and because of the rigid metal bar to promote the power of seesaw very little, thereby make the plastics arm-tie that is connected with rigid metal bar connection stressed very little, can not make its stress deformation when hot; In addition, the transmission requirement that being connected between main knob and the seesaw adopts Bowden cable both can satisfy the handgrip different rotation angle, connect directly simple because of it again, bending resistance is also little, the user only need use just energy opening and closing electric motor assembly of less power, therefore at the normal adstante febre of electric motor assembly, driving member in the utility model pruner and working of plastics that is connected with the rigid metal bar such as arm-tie etc. since stressed be not very big, so be not easy to take place thermal deformation, therefore, the utility model pruner has effectively guaranteed normally opening and closing of electric motor assembly, has improved the reliability that machine uses.

As a kind of improvement of the present utility model, the middle part sliding fit of described Bowden cable is in Bowden cable guiding plate hole.The setting of Bowden cable guide plate has reduced the probability that Bowden cable bends effectively in transmission process, thereby further improved the portability of the utility model opening and closing motor, promptly the user can use littler power to come the opening and closing motor.

As another kind of improvement the of the present utility model, the right end portion of described Bowden cable is with a back-moving spring I; The lower end of described back-moving spring I is socketed on the projection of seesaw left end, and its upper end is connected on the switch jacking block.Being provided with of back-moving spring I can make Bowden cable no matter still can not remain tensioning state under the duty down in working order, thereby guarantees that Bowden cable can not come off from main button or seesaw.

Also have a kind of improvement as of the present utility model, the top of described back-moving spring I is provided with a roller; Described roller is installed on the casing; Described roller right side closely contacts with Bowden cable.Roller the resistance of motion that can reduce Bowden cable is set, thereby further improve the portability of motor opening and closing in the utility model pruner, promptly the user can use littler power to come the opening and closing motor.

Description of drawings:

Fig. 1 is the sectional structure synoptic diagram of the utility model pruner.

Fig. 2 is the structure for amplifying synoptic diagram of seesaw in the utility model pruner.

Shown in the figure: 1, Top carry handle, 2, main button, 3, assistant's handle, 4, secondary button, 5, electric machine assembly, 6, microswitch, 7, Bowden cable, 8, seesaw, 9, rigid metal bar, 10, arm-tie, 11, casing, 12, push rod, 13, the switch jacking block, 14, the Bowden cable guide plate, 15, back-moving spring I, 16, projection, 17, roller, 18, back-moving spring II, 19, through hole, 20, groove.

Specific embodiment:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

As shown in Figure 1, in this specific embodiment, the left end of main button 2 be hinged on Top carry handle 1 below; The lower end of secondary button 4 is fixedly connected on the lower end of arm-tie 10, and the lower end of arm-tie 10 also is hinged on the casing 11 simultaneously, owing to fixedly connected with the lower end of arm-tie 10 in the lower end of secondary button 4, therefore the lower end of secondary button 4 also can be considered hinged with casing 11; The right-hand member of described main button 2 is connected with an end of Bowden cable 7, and the other end of Bowden cable 7 is connected the left end of seesaw 8; The right-hand member of described seesaw 8 is connected with the left end of rigid metal bar 9, and the right-hand member of rigid metal bar 9 is connected the upper end of arm-tie 10.In this specific embodiment, as shown in Figure 2, described seesaw 8 is similar to the driving lever in the prior art pruner, its effect is that microswitch 6 is produced acting force, thereby open or close the electric motor assembly 5 that is electrically connected with microswitch 6, be provided with through hole 19 in the middle of the described seesaw 8, seesaw 8 can slide up and down to be enclosed within on the push rod 12 by through hole 19, the left end of seesaw 8 is provided with a projection 16, described protruding 16 are provided with a groove that is communicated with 20 with seesaw 8, and the step that the left end that the other end of above-mentioned Bowden cable 7 is connected seesaw 8 refers to Bowden cable 7 other ends is stuck on the groove 20; Also be socketed with a switch on the push rod 12 and decide piece 13, switch is decided the top that piece 13 is positioned at seesaw 8; Described microswitch 6 is positioned at the top of switch jacking block 13.In this specific embodiment, described Bowden cable 7, push rod 12, switch jacking block 13, main button 2, seesaw 8 and microswitch 6 all are positioned at the left side of electric motor assembly 5; Described rigid metal bar 9 is positioned at the longitudinal middle part next door of electric motor assembly 5; Described arm-tie 10 and secondary button 4 are positioned at the right of electric motor assembly 5.

In this specific embodiment, the middle part sliding fit of described Bowden cable 7 is in the hole of Bowden cable guide plate 14; The right end portion of Bowden cable 7 is with a back-moving spring I 15; The lower end of described back-moving spring I 15 is enclosed within on the projection 16 of seesaw 8 left ends, its upper end is connected on the switch jacking block 13, because the step of Bowden cable 7 right-hand members is to be stuck in groove 20, so being provided with of back-moving spring I 15 can be placed Bowden cable 7 and skidded off from groove 20 and come off.In addition, the top of described back-moving spring I 15 is provided with a roller 17; Described roller 17 is installed on the casing 11; Described roller 17 right sides closely contact with Bowden cable 7, and promptly no matter Bowden cable 7 is in working order the time or all can not contact with roller 17 parts during duty, roller 17 the resistance of motion that can reduce Bowden cable 7 is set.

The principle of work of the utility model pruner is:

1, when the moving main button 2 of user's individual palpation, main button 2 moves upward by the left end that Bowden cable 7 drives seesaw 8, because seesaw 8 has only left end to move upward, therefore the seesaw 8 of this moment can not driving switch be decided piece 13 and is moved upward, and can't apply an acting force to microswitch 6 thereby make switch decide piece 13;

2, when the moving secondary button 4 of user's individual palpation, secondary button 4 drives 9 motions of rigid metal bar by arm-tie 10, thereby the right-hand member that drives seesaw 8 moves upward, because seesaw 8 has only right-hand member to move upward, therefore the seesaw 8 of this moment can not driving switch be decided piece 13 and is moved upward, and can't apply an acting force to microswitch 6 thereby make switch decide piece 13;

3, when the user presses main button 2 and secondary button 4 simultaneously, because the two ends of seesaw 8 are all stressed, so seesaw 8 can integral body move upward, and decides piece 13 and moves upward thereby drive switch, and microswitch 6 applied an acting force, thereby make microswitch 6 open or close electric motor assembly 5.

The utility model pruner belongs to mechanical brake formula pruner; but the structure of being made up of main button 2, secondary button 4, Bowden cable 7, seesaw 8, rigid metal bar 9 and arm-tie 10 in the utility model is not limited to be used for mechanical brake formula pruner; it also can be used for electromagnetic brake formula pruner, so it falls into protection domain of the present utility model equally.

Claims

1, a kind of pruner, comprise the microswitch (6) that left end is hinged on the following main button (2) of Top carry handle (1), assistant's handle (3), secondary button (4) and is electrically connected with electric machine assembly (5), it is characterized in that: the right-hand member of described main button (2) is connected with an end of Bowden cable (7); The other end of described Bowden cable (7) is connected the left end of seesaw (8); The right-hand member of described seesaw (8) is connected with the left end of rigid metal bar (9); The right-hand member of described rigid metal bar (9) is connected the upper end of arm-tie (10); The lower end of described arm-tie (10) is hinged on the casing (11), and is connected with secondary button (3) lower end; Described seesaw (8) is enclosed within on the push rod (12) slidably; Be with a switch jacking block (13) on the push rod (12) of seesaw (8) top; Described microswitch (6) is positioned at the top of switch jacking block (13); Described Bowden cable (7), push rod (12), switch jacking block (13), main button (2), seesaw (8) and microswitch (6) all are positioned at the left side of electric motor assembly (5); Described arm-tie (10) and secondary button (4) are positioned at the right of electric motor assembly (5).

2, pruner according to claim 1 is characterized in that: the middle part sliding fit of described Bowden cable (7) is in Bowden cable guide plate (14) hole.

3, pruner according to claim 1 and 2 is characterized in that: the right end portion of described Bowden cable (7) is with a back-moving spring I (15); The lower end of described back-moving spring I (15) is socketed on the projection (16) of seesaw (8) left end, and its upper end is connected on the switch jacking block (13).

4, pruner according to claim 3 is characterized in that: the top of described back-moving spring I (15) is provided with a roller (17); Described roller (17) is installed on the casing (11); Described roller (17) right side closely contacts with Bowden cable (7).