CN101872688B

CN101872688B - Switch mechanism for branch cutter

Info

Publication number: CN101872688B
Application number: CN200910233027A
Authority: CN
Inventors: 桑树华; 刘金波; 柳晓宇
Original assignee: Suzhou Cleva Electric Appliance Co Ltd
Current assignee: Suzhou Cleva Electric Appliance Co Ltd
Priority date: 2009-09-22
Filing date: 2009-09-22
Publication date: 2012-10-17
Anticipated expiration: 2029-09-22
Also published as: CN101872688A

Abstract

The invention provides a switch mechanism for a branch cutter, comprising a switch case component and a knob. The switch case component comprises an electromagnetic switch, a rocker switch and a trigger component, wherein the electromagnetic switch is provided with a first button and a second button, and the rocker switch is provided with a third button; and the trigger component comprises a connecting piece and an ejector pad. When the knob is in stop location, the connecting piece triggers the second button and releases the first button and the third button; when the knob is in positive rotating location, the connecting piece drives the ejector pad to ensure that the ejector pad triggers the first button, and releases the second button; and when the knob is in negative rotating location, the connecting piece triggers the third button and releases the second button, and the third button drives the ejector pad to ensure that the ejector triggers the first button. Therefore, the conventional connecting piece and the transition piece are simplified into the ejector in the trigger structure of the electromagnetic switch and the rocker switch, so when the main trigger piece triggers the rocker switch, the electromagnetic switch can be triggered through the rocker on the rocker switch to simplify structure and reduce cost.

Description

The switching mechanism of chipper

Affiliated technical field

The present invention relates to a kind of switching mechanism of chipper.

Background technology

Chipper comprises motor, transmission mechanism, cutter hub, charging aperture and switching mechanism.When machine works, the user puts into charging aperture with branch, through cutterhead with its broken cutting; In some cases; Because branch is more sturdy, the phenomenon of stall just might take place in motor, just needs this moment console switch mechanism to make the motor counter-rotating; Thereby branch is withdrawed from charging aperture, so that proceed broken cutting.In the chipper of on existing market, selling, be to adopt induction machine mostly, if therefore the moment counter-rotating can't cause damage to motor, but the cost of induction machine is higher, and institute takes up space bigger; And for the chipper that adopts series excited machine; Because the characteristic of motor; Might cause motor to damage like motor from just changeing state moment counter-rotating, generally be to protect motor through increasing circuit board in the existing chipper, can effectively realize the rotating of motor again; But so just increased cost, reduced the market competitiveness.Meanwhile; Be used for the switching mechanism on the chipper existing, it generally includes electromagnetic switch and rocker switch, and connects with circuit between the motor and trigger and discharge the different operating state that buttons different on it is controlled motor through electromagnetic switch and rocker switch; Yet; It triggers the structure more complicated, comprises the part that triggers part and a plurality of middle connection and transition, has increased cost virtually.

Summary of the invention

In order to overcome the deficiency of existing switching mechanism, the present invention provides a kind of switching mechanism of novel chipper, and it can effectively realize triggering function, and simple in structure.

The technical solution adopted for the present invention to solve the technical problems is: a kind of switching mechanism of chipper, and it comprises switch enclosure assembly and knob, said knob is provided with respect to said switch enclosure assembly just changes retaining, retaining catch and three gears of counter-rotating retaining.Said switch enclosure assembly comprises electromagnetic switch, rocker switch and triggering assembly, and said electromagnetic switch has first button and second button, and said rocker switch has the 3rd button.Said triggering assembly comprises connector and pushing block, and when said knob was in retaining catch, said connector triggered said second button, and discharges said first button and the 3rd button; Said knob is in said just the commentaries on classics when keeping off, and said connector drives said pushing block makes said pushing block trigger said first button, and discharges said second button; When said knob was in the counter-rotating retaining, said connector triggered said the 3rd button, and discharges said second button, and the said pushing block of said the 3rd button push makes said pushing block trigger said first button.

The invention has the beneficial effects as follows through in the triggering structure of electromagnetic switch and rocker switch, existing link and transition piece being reduced to a connector and pushing block; Make the winner trigger part when triggering rocker switch; Can trigger electromagnetic switch through the seesaw on the rocker switch; Simplify the structure, reduced cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is the schematic perspective view of chipper in the present embodiment.

Fig. 2 is the decomposing schematic representation of the switching mechanism of chipper among Fig. 1.

Fig. 3 is the sketch map of switching mechanism among Fig. 2.

Fig. 4 is the explosive view of switching mechanism among Fig. 3.

Fig. 5 is the decomposing schematic representation of the knob of switching mechanism among Fig. 2.

Fig. 6 is that the knob among Fig. 2 is in retaining catch, the vertical view when push button is in primary importance.

Fig. 7 is that the knob among Fig. 2 is in and just changes retaining, the vertical view when push button is in primary importance.

Fig. 8 is that the knob among Fig. 2 is in retaining catch, the vertical view when push button is in the second place.

Fig. 9 is that the knob among Fig. 2 is in counter-rotating retaining, the vertical view when push button is in the second place.

Figure 10 is the cutaway view of the A-A direction among Fig. 6.

Figure 11 is the cutaway view of the B-B direction of Fig. 8.

Figure 12 is the vertical view in the switch enclosure assembly among Fig. 6.

Figure 13 is the vertical view in the switch enclosure assembly among Fig. 7.

Figure 14 is the vertical view in the switch enclosure assembly among Fig. 9.

Figure 1. Switch mechanism 2. Knob 3. Panels 31. Through Hole 4. Stopper 5. Switch box assembly 6. Switch box cover 7. Power Connection Department 8. knob body 81. partition 82. chute 83 first stopper groove 84. connection hole 85. push button connection hole 86 second limit Slot 9. Push button 91. snaps 92. positioning column 10. slider 101. buckle hole 102. positioning hole 11. connections 111. cam block 112 tentacles 12 push block 121. storage tank 122. pushing the top 123. guide block 124. curved antennae 13 rocker switch 131. third button 132 Trigger end 133 since the reset terminal 14. solenoid switch 141. first button 142 second button 15. switch box under cover 151. guide groove 16. positive switch gear 17. reverse gear 18 Stop stop 19 first position 20 second position 21. overcurrent protector 22. was stopper 23 Trigger package

Embodiment

Referring to figs. 1 to Fig. 5, shown in the figure for the chipper of the pairing embodiment of the present invention with and switching mechanism.The switching mechanism 1 that it mainly includes drive motors, cutterhead and controls above-mentioned drive motors.Switching mechanism 1 comprises knob 2, switch enclosure assembly 5 and is arranged on the locating part 4 on the panel 3 that this locating part 4 is for projecting upwards the convex of extension from said panel 3.Knob 2 and switch enclosure assembly 5 lay respectively at panel 3 about, and the inside that can locating part 4 be contained knob 2.Be arranged on the inner connector 11 of switch enclosure and stretch out the through hole 31 that is positioned on the panel 3 and cooperate, thereby knob 2 is connected with switch enclosure assembly 5, so the rotation of the rotation of this knob 2 and connector 11 is synchronous with connecting hole 84 on being arranged on knob 2; The rotation of switching mechanism 1 through knob 2 trigger with release-push case assembly 5 in the different buttons of electromagnetic switch 14 and rocker switch 13 reaching the control motor circuit, thereby the rotating of realization motor.

With reference to figure 4 to Fig. 5, wherein knob 2 by knob main body 8, form for limited 22, said limited 22 comprises push button 9 and slide block 10.Knob main body 8 set inside have chute 82, and limited 22 can be slipped into this chute 82 fully, are provided with dividing plate 81 in the middle of the said chute 82, and push button 9 and slide block 10 lay respectively at the both sides of dividing plate 81.Dividing plate 81 is provided with push button connecting hole 85, and it can accommodate above-mentioned push button 9, and push button 9 can slide in this push button groove; Have a pair of block button hole 101 and a location hole 102 on the above-mentioned slide block 10.A pair of buckle 91 on the push button 9 passes above-mentioned push button connecting hole 85 and block button hole 102 buckle mutually, at this location hole 102 that reference column between buckle 91 92 inserts on the slide blocks 10 has been arrived location and purpose of connecting simultaneously.

In conjunction with foregoing and with reference to figure 6 to Figure 11, be depicted as each control position sketch map of the switching mechanism 1 of embodiments of the invention.Relative rotation between above-mentioned knob 2 and the panel is formed with three Different control positions, and being respectively just changes retaining 16, counter-rotating retaining 17 and retaining catch 18.Limited 22 on knob main body 8 slide relative also formed two relative positions, i.e. the primary importance 19 and the second place 20.The two ends of above-mentioned knob main body 8 also are provided with first stopper slot 83 and second stopper slot 86, and it is mainly used in accommodates above-mentioned locating part 4.

Further with reference to Figure 10 and Figure 11, when push button 9 slides, because the cooperation of reference column 92 and location hole 102 makes slide block 10 also slide with respect to knob main body 8 together.When push button 9 slid into above-mentioned primary importance, because the slip of slide block 10, it sealed first stopper slot 83 on the knob main body 8, thereby makes this first stopper slot 83 can not accommodate above-mentioned locating part 4; Second stopper slot 86 that is positioned at these first stopper slot, 83 rears simultaneously is not closed, and it can accommodate this locating part 4; Therefore this knob main body 8 can only be towards the direction knob that can accommodate locating part 4, and promptly rotating to is just changeing retaining 16, as shown in Figure 7.Accordingly, shown in figure 11, when push button 9 when the second place 20 is slided, what slide block 10 was also corresponding slides to second stopper slot 86, these second stopper slot, 86 sealings the most at last, meanwhile, above-mentioned first stopper slot 83 will be opened wide to accommodate locating part 4.Knob main body 8 also can only promptly rotate to counter-rotating retaining 17 towards the direction rotation that can accommodate locating part 4 at this moment.

Just change retaining 16 the time when knob main body 8 to just changeing retaining 16 rotations or being in, because second stopper slot 86 is being accommodated above-mentioned locating part 4, therefore limited 22 can not be slided to these second stopper slot, 86 places (being the second place).When knob main body 8 to 17 rotations of counter-rotating retaining or when being in counter-rotating retaining 17, first stopper slot 83 is being accommodated locating part 4, so limited 22 can not be slided to first stopper slot, 83 places (being primary importance 19).Therefore have only when knob main body 8 is in retaining catch 18, above-mentioned limited 22 could be free to slide between the primary importance 19 and the second place 20.

Referring to figs 12 to 14, when shown in the figure being the different control position of said switching mechanism 1, the sketch map that the electromagnetic switch 14 in the switch enclosure assembly 5 and rocker switch 13 are triggered and discharge.Above-mentioned switch enclosure assembly 5 mainly includes switch enclosure loam cake 6, switch enclosure lower cover 15, electromagnetic switch 14, rocker switch 13, triggers assembly 23 and overcurrent protector 21; Electromagnetic switch 14 is provided with first button 141 and second button 142; Rocker switch 13 is provided with the 3rd button 131; The 3rd button 131 is a seesaw that resets certainly, and the one of which end is that trigger end 132 is from reset terminal 133 with the other end.Trigger assembly 23 and comprise connector 11, pushing block 12.Above-mentioned connector 11 is provided with cam bit 111 and feeler 112, and cam bit 111 can trigger or discharge second button 142 of electromagnetic switch 14, and feeler 112 can contact with pushing block 12 with the 3rd button 131 of rocker switch 13.Pushing block 12 is installed between electromagnetic switch 14 and the rocker switch 13, and its upper and lower surface all is provided with guide pad 123, and it cooperatively interacts with the gathering sill 151 that is arranged on the switch enclosure, thereby can between electromagnetic switch 14 and rocker switch 13, slide each other.Also be provided with accepting groove 121, ejection part 122 and arc feeler 124 on the pushing block 12, this accepting groove 121 can be accommodated the feeler 112 of above-mentioned connector 11, and feeler 112 is along with the rotation of connector 11 can be slided in above-mentioned accepting groove 121; Ejection part 122 can be in contact with one another with first button 141 of electromagnetic switch 14, arc feeler 124 can with being in contact with one another of the 3rd button 131 from reset terminal 133.When knob main body 8 was positioned at retaining catch, corresponding to Figure 12, cam bit 111 triggered second button 142 of electromagnetic switch 14 at this moment, and discharges the 3rd button, and first button of electromagnetic switch also is in d/d state simultaneously.When the knob main body to just changeing 16 whens rotation of retaining, above-mentioned feeler 112 is positioned at accepting groove 121 and to ejection part 122 rotations, and drives ejection piece 12 first buttons and slide, finally through ejection part 122 with 141 triggerings of first button; In connector 11 rotations, its upper cam block 111 discharges second button 142 simultaneously, and knob 2 was in and just changeed retaining 16 this moment.When knob 2 keeps off 16 when counter-rotating retaining 17 rotates by just changeing, at first rotate to retaining catch 18 by just changeing retaining 16, connector 11 is in state shown in figure 12 with pushing block 12 at this moment; But when knob 2 needs to continue to 17 rotations of counter-rotating retaining because first stopper slot 83 on the knob main body 8 is in by the state of slide block 10 sealings, therefore can not accommodate be provided with panel 3 on locating part 4; So need earlier push button 9 to be slid into the second place 20, first stopper slot 83 of accommodating locating part 4 discharged and could knob 2 be rotated to counter-rotating retaining 17.Corresponding to aforesaid operations; Rotation along with knob 2; The connector 11 that is positioned at switch enclosure also rotates to counter-rotating retaining 17, and the trigger end 132 of feeler 112 and the 3rd button 131 contacts and the 3rd button 131 is triggered at this moment, and cam bit 111 discharges second button 142 of electromagnetic switch 14 simultaneously.Because the triggering of rocker switch 13 disconnected 132 is triggered, so its arc feeler 124 from reset terminal 133 and pushing block 12 is in contact with one another and this pushing block 12 is pushed up to electromagnetic switch 14,14 first button, 141 triggerings on the electromagnetic switch the most at last.

According to said structure, because above-mentioned knob 2 need make push button 9 between the primary importance 19 and the second place 20, slide in the position of retaining catch 18 just changeing when rotating between retaining 16 and the counter-rotating retaining 17.Therefore the time of certain buffering is provided for the rotating of motor, has protected motor thus.

Claims

1. the switching mechanism of a chipper (1); It mainly comprises switch enclosure assembly (5) and knob (2); Said knob (2) is provided with respect to said switch enclosure assembly (5) just changes retaining (16), retaining catch (18) and (17) three gears of counter-rotating retaining; Said switch enclosure assembly (5) comprises electromagnetic switch (14), rocker switch (13) and triggering assembly (23), and said electromagnetic switch (14) has first button (141) and second button (142), and said rocker switch (13) has the 3rd button (131); It is characterized in that: said triggering assembly (23) comprises connector (11) and pushing block (12); When said knob (2) was in retaining catch (17), said connector (11) triggered said second button (142), and discharges said first button (141) and the 3rd button (131); Said knob (2) is in said when just changeing retaining (17), and said connector (11) drives said pushing block (12) makes said pushing block trigger said first button (141), and discharges said second button (142); When said knob (2) was in counter-rotating retaining (17), said connector (11) triggered said the 3rd button (131), and discharges said second button (142), and said the 3rd button (131) promotes said pushing block (12) makes said pushing block trigger said first button (141); Said pushing block (12) both sides are respectively equipped with ejection part (122) and arc feeler (124), and said ejection part (123) can trigger said first button (141), and said arc feeler (124) can contact with said the 3rd button (131).

2. the switching mechanism of chipper according to claim 1 (1) is characterized in that: said knob (2) is arranged at said switch enclosure assembly (5) top, and interconnects with said connector (11).

3. the switching mechanism of chipper according to claim 1 (1); It is characterized in that: said connector (11) is provided with cam bit (111) and feeler (112); Said cam bit (111) can trigger said second button (142), and the said feeler (112) of connector (11) can trigger said the 3rd button (131).