CN201081906Y

CN201081906Y - Security control mechanism for pruner

Info

Publication number: CN201081906Y
Application number: CNU200720042833XU
Authority: CN
Inventors: 郑朝柱
Original assignee: SUZHOU LEVAC ELECTRIC APPLIANCE CO Ltd
Current assignee: Suzhou Cleva Electric Appliance Co Ltd
Priority date: 2007-08-13
Filing date: 2007-08-13
Publication date: 2008-07-09
Anticipated expiration: 2017-08-13

Abstract

A safety control mechanism of a pruner comprises a sensitive switch (4) for controlling the on and off of a motor of the pruner, a main handle (2) and an auxiliary handle (3) on a casing (1) of the pruner. The sensitive switch is fixedly arranged in the main handle, under which a main handle button (5) is pivotally connected, and an auxiliary handle button (7) is glidingly connected with the auxiliary handle. The safety control mechanism also comprises a shift lever (6) and a steel rope (8) between the shift lever and the auxiliary handle button. The main handle button can be fitly connected with the shift lever, an end of which forms a contact for triggering the sensitive, and the other end of which forms a pivot (9). An accepting chamber (10), in which the pivot of the shift lever can be glidingly accepted, is installed in the casing. For adopting the steel rope and the guy rope, the pruner of the utility model can greatly save the space and solve the problem of easy deformation and invalidation. Moreover, the shift lever of the safety control mechanism is provided with the movable pivot, so that the requirement to the component dimension of the mechanism is lowered.

Description

The security control mechanism of pruner

Affiliated technical field

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

Background technology

Pruner in the garden instrument is a kind of cutting implement, can prune and safeguards for shrub, hedge etc., and it has efficient height, advantage such as easy to use, so pruner becomes one of a kind of garden instrument that is widely used gradually.Yet, because the tool section of this pruner is in use for being exposed to outer working at high speed, so the security control to this machine is very important, if it is careless, cause maloperation easily, perhaps finger has contacted power switch accidentally, make pruner work suddenly and cause personal injury, so what present pruner adopted is the two moving security control mechanism that main handle and auxiliary-handle cooperate, and needs people's both hands to be held in respectively on main handle and the auxiliary-handle, and supress main handle button and auxiliary-handle button simultaneously, pruner just can be activated work, thereby has guaranteed operator's safety, avoids injuring operator's health.But, such security control mechanism, " U " shape steel wire and a seesaw mechanism have been adopted, and the fulcrum of seesaw is fixed in handle or the housing, so the accessory size of this mechanism is had relatively high expectations, and the space that " U " shape steel wire is occupied is bigger, cause difficulty to exterior design, and, steel wire easy deformation or follow the string, thus failure mechanisms caused.

Summary of the invention

For the deficiency of the security control mechanism that overcomes existing pruner, the utility model provides a kind of security control mechanism of novel pruner, and it makes the space save greatly, and has reliable serviceability and security performance.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of security control mechanism of pruner, it includes the electromotor work whether microswitch of control pruner, be arranged on main handle and auxiliary-handle on the casing of pruner, this microswitch is fixedly mounted in the main handle, pivotally connected in the main handle bottom have the main handle button, and be connected with the auxiliary-handle button on auxiliary-handle slidably.This security control mechanism also comprise driving lever and be connected driving lever and the auxiliary-handle button between cable wire.The main handle button can be matched with driving lever.Driving lever forms the contact that can trigger microswitch at the one end, and forms fulcrum at its other end, is provided with host cavity in casing, and the fulcrum of driving lever is housed in the described host cavity slidably.

Further, described driving lever is arranged on the inboard of described main handle button, and the inner surface of described main handle button is provided with ejector, and described ejector can contact with described driving lever.

Further, a back-moving spring is connected between described driving lever and the described main handle.

Further, described cable wire side within it is provided with slidably stay cord, and an end of described stay cord is fastened in the fulcrum of described driving lever, and its another section is fixedly connected on the described auxiliary-handle button.

Further, described cable wire leads and is positioned at casing by being arranged on guide in the described casing.

Further, and described auxiliary-handle has one half shape housings, and described auxiliary-handle button is slidingly arranged between this double shape housing.

Further, an extension spring is connected between described auxiliary-handle button and one of them the half shape housing.

The beneficial effects of the utility model are, its security control mechanism has adopted the cable wire that is arranged in the casing, make the space of the utility model pruner to save greatly, and solved the problem of yielding inefficacy, in addition, the driving lever of this security control mechanism has slidably fulcrum, thereby has reduced the accessory size requirement of mechanism.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the cutaway view that is in first state corresponding to the security control mechanism of the utility model pruner.

Fig. 2 is auxiliary-handle among Fig. 1 and the installation diagram between button, extension spring and the cable wire thereof.

Fig. 3 is the cutaway view that is in second state corresponding to the security control mechanism of the utility model pruner.

Fig. 4 is the cutaway view that is in the third state corresponding to the security control mechanism of the utility model pruner.

Fig. 5 is the cutaway view that is in the 4th state corresponding to the security control mechanism of the utility model pruner.

Embodiment

Reference diagram 1 comprises casing 1, is arranged on main handle 2 and auxiliary-handle 3 on the casing 1 corresponding to pruner of the present utility model, is provided with tool section (figure does not show) the do shearing running that motor (figure does not show) is used to drive pruner in casing 1.This pruner also is provided with security control mechanism, and this security control mechanism mainly comprises microswitch 4, can trigger the driving lever 6 and the cable wire 8 of microswitch 4.Microswitch 4 is fixedly mounted in the main handle 2, and the machine operation that is used to control pruner whether.Driving lever 6 forms outstanding contact 16 at the end near microswitch 4, is used to trigger microswitch 4, and forms fulcrum 9 in its other end, and this fulcrum 9 is roughly the cylinder of hollow, and driving lever 6 can rotate relatively around this fulcrum 9.Outstandingly on the main body section of driving lever 6 be extended with reference column 11, and the position of the close microswitch 4 in main handle 2 is provided with 13, one back-moving springs 15 of location-plate and is connected between this reference column 11 and the location-plate 13.Also form host cavity 10 in casing 1, the cross section of this host cavity 10 is the waist shape with certain-length, and the fulcrum 9 of above-mentioned driving lever 6 is housed in this host cavity 10 slidably.Be formed on the inner surface of this button 5 being connected with 5, one ejectors 14 of main handle button by bearing pin 12 below the main handle 2, extend, make the contact 16 on it trigger microswitches 4 in order to ejection driving lever 6 towards the direction of driving lever 6.With further reference to Fig. 2, and auxiliary-handle 3 has one

half shape housings

32,34, and auxiliary-handle button 7 is connected between this

double shape housing

32 and 34 slidably, and the part be exposed at outside the auxiliary-handle 3.In addition, extension spring 19 is fixedly connected between the bottom of the bottom of auxiliary-handle button 7 and one of them

half shape housing

32 or 34, and the trend that auxiliary-handle button 7 is pulled to half shape housing, 32/34 bottom is arranged under usual condition.

Above-mentioned cable wire 8 is mounted slidably stay cord 15 within it, one end of stay cord 15 is fastened in the fulcrum 9 of above-mentioned driving lever 6, and its other end is fixedly connected on the auxiliary-handle button 7, this fixedly connected mode can be buckle, welding or other conventional approaches, cable wire 8 is located in the space in the casing 1 by under the effect that is arranged on the guide 17 in the casing 1 like this.

The working method of safety control structure of the present utility model is as follows: when main handle button 5 and auxiliary-handle button 7 all are not pressed, this moment driving lever 6 under the effect of back-moving spring 15 and self gravitation away from microswitch 4, and its fulcrum 9 is positioned at the bottom of host cavity 10, so microswitch 4 can not be touched, thereby pruner can not work, and its state is referring to Fig. 1; When main handle button 5 is pressed and auxiliary-handle button 7 when not pressing, ejector 14 parts in the main handle button 5 overcome the elastic force of back-moving spring 15 and upwards promote driving lever 6, make the contact 16 of driving lever 6 further near microswitch 4, and the fulcrum 9 of driving lever 6 slides into the top of host cavity 10, like this, under the dual restriction of back-moving spring 15 and host cavity 10 shapes, driving lever 6 can not further be made progress ejection and be removed to trigger microswitch 4, so pruner still can not worked, its state is referring to Fig. 3; When auxiliary-handle button 7 is pressed and main handle button 5 when not pressing, just auxiliary-handle button 7 pulls down the bottom that is in host cavity 10 by cable wire 8 with the fulcrum 9 of driving lever 6, the state of this moment is similar to the state that Fig. 1 shows, be that microswitch 4 still is in the state of not being triggered, thereby pruner can not worked, its state is referring to Fig. 4, when main handle button 5 and auxiliary-handle button 7 all are pressed, the synthetic state that is equivalent to press the state of main handle button 5 separately and presses 7 two states of auxiliary-handle button separately, promptly under state shown in Figure 3, thereby 9 one downward pulling force of fulcrum that auxiliary-handle button 7 gives driving lever 6 by the stay cords 15 in the cable wire 8 make the contact 16 of driving lever 6 rotate up relatively and have contacted microswitch 4, pruner is in running order, its state is referring to Fig. 5, like this, when having only operator's both hands to grip main handle button 5 and auxiliary-handle button 7, pruner could be in running order, otherwise when unclamping any one among main handle button 5 and the auxiliary-handle button 7, pruner will quit work, thereby has guaranteed user's personal safety.

Claims

1. the security control mechanism of a pruner, it includes the electromotor work whether microswitch (4) of control pruner, be arranged on main handle (2) and auxiliary-handle (3) on the casing (1) of described pruner, described microswitch (4) is fixedly mounted in the described main handle (2), pivotally connected in main handle (2) bottom have a main handle button (5), and on auxiliary-handle (3), be connected with auxiliary-handle button (7) slidably, it is characterized in that: described security control mechanism also comprise driving lever (6) and be connected driving lever (6) and auxiliary-handle button (7) between cable wire (8), described main handle button (5) can be matched with described driving lever (6), described driving lever (6) forms the contact (16) that can trigger microswitch (4) at the one end, and form fulcrum (9) at its other end, be provided with host cavity (10) in casing (1), the fulcrum (9) of described driving lever (6) is housed in the described host cavity (10) slidably.

2. security control mechanism according to claim 1, it is characterized in that: described driving lever (6) is arranged on the inboard of described main handle button (5), the inner surface of described main handle button (5) is provided with ejector (14), and described ejector (14) can contact with described driving lever (6).

3. security control mechanism according to claim 1 is characterized in that: a back-moving spring (15) is connected between described driving lever (6) and the described main handle (2).

4. security control mechanism according to claim 1, it is characterized in that: described cable wire (8) side within it is provided with slidably stay cord (19), one end of described stay cord (19) is fastened in the fulcrum (9) of described driving lever (6), and its another section is fixedly connected on the described auxiliary-handle button (7).

5. according to claim 1 or 4 described security control mechanisms, it is characterized in that: described cable wire (8) leads and is positioned at casing (1) by being arranged on guide (17) in the described casing (1).

6. security control mechanism according to claim 1 is characterized in that: and described auxiliary-handle (3) has one half shape housings (32,34), and described auxiliary-handle button (7) is slidingly arranged between this double shape housing (32,34).

7. security control mechanism according to claim 6 is characterized in that: an extension spring (19) is connected between described auxiliary-handle button (7) and one of them the half shape housing (32 or 34).