CN201558726U

CN201558726U - Safety switch mechanism of branch shredder

Info

Publication number: CN201558726U
Application number: CN2009200493107U
Authority: CN
Inventors: 桑树华; 朱艳玲
Original assignee: Suzhou Cleva Electric Appliance Co Ltd
Current assignee: Suzhou Cleva Electric Appliance Co Ltd
Priority date: 2009-10-10
Filing date: 2009-10-10
Publication date: 2010-08-25
Anticipated expiration: 2019-10-10

Abstract

A safety switch mechanism of branch shredder comprises a safety switch which is connected with a main power switch of the branch shredder in serial and has two working states of on and off. The safety switch mechanism also comprises a poke rod, a first trigger assembly connected to a hopper of the branch shredder and a second trigger assembly connected to the blade base and end cover of the branch shredder. The first trigger assembly and the second trigger assembly can be respectively fitted with the poke rod. When the first trigger assembly and the second trigger assembly are fitted with the poke rod simultaneously, the poke rod may trigger the safety switch to turn on the same; when the first trigger assembly or the second trigger assembly are separated from the poke rod, the poke is correspondingly separated from the safety switch to turn off the same. Thus, if both or one of the hopper and the end cover are/is not properly mounted, the poke rod can not turn on the safety switch thereby guaranteeing the safety of user from multiple aspects.

Description

The safety switching mechanism of chipper

Affiliated technical field

The utility model relates to a kind of safety switching mechanism of chipper.

Background technology

Chipper is generally used for the branch in the gardens, branch etc. are shredded so that branch, branch after the chopping are collected and cleared up.This chipper generally comprises main part and is positioned at the hopper of main part below.The top of main part is provided with charging aperture, and portion is equipped with motor, transmission device and cutting tool within it, and wherein cutting tool is installed in the tool rest, and main part is provided with the end cap that covers on the tool rest, and this end cap is dismountable to be covered on the tool rest.Like this; in use need cutting tool is safeguarded or when changing; thereby end cap can be disassembled from tool rest and expose cutting tool to safeguard easily or to change; this just need be provided with a kind of safety guard, thereby prevents that accident from turning on the power switch when exposing cutting tool and make the cutting tool rotation bring personal injury to the operator when end cap disassembles.Prior art provides a kind of like this safety guard; generally be that a microswitch that is in series with power main switch is set; and on end cap, be provided with the trigger unit that triggers microswitch; when end cap is not in place; trigger unit can not trigger microswitch; make power main switch always be in the state of disconnection, machine can not start, and has guaranteed user's personal safety.In addition, treat that broken branch, branch shred by the inboard that charging aperture enters into main part, the branch that has shredded then, branch drop on the ground by the hopper of main part below.In the prior art, the hopper that has is one-body molded with main part, and the hopper that also has is to separate moulding with main part, by securing members such as bolts hopper is fixed on the below of main part then.Like this; when hopper when main part disassembles or be not in place; just can touch cutting tool unexpectedly from the below of main part; thereby there is certain potential safety hazard; so the chipper for this hopper can be dismantled from main part need provide a kind of improved safety switching mechanism; it can not only not provide safeguard protection to the user when end cap is in place, and should be able to not provide safeguard protection to the user when hopper is in place yet.

The utility model content

Deficiency for the safeguard protection that overcomes existing chipper; the utility model provides a kind of safety switching mechanism of the chipper that has improved; it can not only not provide safeguard protection to the user when end cap is in place, and can not provide safeguard protection to the user when hopper is in place again yet.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of safety switching mechanism of chipper, described chipper comprises main part and removably is mounted to hopper on the described main part, described main part comprises tool rest and dismountable end cap that is installed on the described tool rest, described safety switching mechanism comprises the safety switch that is arranged in the described main part, described safety switch is connected in series mutually with the power main switch of described chipper and has and disconnects and closed two states, it is characterized in that: described safety switching mechanism also comprises driving lever, be connected first on the described hopper and trigger assembly, and be connected second on described tool rest and the described end cap and trigger assembly, the described first triggering assembly and described second triggers assembly can be matched with described driving lever respectively, trigger assembly and described second and trigger assembly simultaneously with described driving lever when matched when described first, described driving lever triggers described safety switch makes described safety switch be in closed state; When described first triggered assembly or described second and trigger assembly and described driving lever and be separated, described driving lever and described safety switch were separated and make described safety switch be in the state of disconnection.

Wherein said driving lever can be rotatably set in the side of described safety switch.

Wherein said switch enclosure is fixedly installed in the described main part.

Wherein said switch enclosure is outward extended with first hollow posts and second hollow posts triggers the assembly and the second triggering assembly partly to accommodate described first respectively.

The beneficial effects of the utility model are, by the first triggering assembly being set on the hopper and on tool rest and end cap, being provided with the second triggering assembly, only make under the situation that hopper and end cap all are in place, the first triggering assembly and second triggers assembly could promote driving lever simultaneously, make it to trigger safety switch, make safety switch be in closed state; And when whole in hopper and the end cap or any are not in place, driving lever is not enough to trigger safety switch makes safety switch be in the state of disconnection, thereby safety switching mechanism of the present utility model guaranteed user's personal safety from many aspects, stopped potential safety hazard.Simultaneously, such safety switching mechanism relatively simple for structure reduced manufacturing cost.

Description of drawings

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

Fig. 1 is the assembling stereogram corresponding to the chipper of most preferred embodiment of the present utility model, and safety switching mechanism wherein is broken away.

Fig. 2 is the three-dimensional exploded view of Fig. 1, and wherein the main part of chipper is by biopsy cavity marker devices.

Fig. 3 is the three-dimensional exploded view corresponding to the microswitch box of the chipper of Fig. 2.。

Fig. 4 is the box-packed three-dimensional view that is assigned to main part of the microswitch of Fig. 3.

Fig. 5 is first the partial view of main part when triggering assembly and second and triggering assembly and all do not install of the chipper of Fig. 1.

Fig. 6 has only first to trigger that assembly is in place and second the three-dimensional view when triggering assembly and not being in place.

Fig. 7 has only second to trigger assembly and first the three-dimensional view when triggering assembly and not being in place.

The specific embodiment

Seeing figures.1.and.2, is a kind of chipper corresponding to most preferred embodiment of the present utility model, and chipper is generally used for the gardens branch, and branch etc. shred, the hopper 3 that it mainly comprises main part 1 and is removably mounted on the bottom of main part 1.In addition, this chipper also comprises a frame that has a roller (figure does not show) so that pushing away chipper and move ahead on the ground.

Aforementioned body portion 1 comprises top board 12, offers charging aperture 14 and the power main switch 16 that is arranged on charging aperture 14 sides on top board 12.In main part 1, be provided with motor (figure do not show) and by cutter plate (figure does not show) that motor drove with the tool rest 18 of cutter plate support fixation in the main part 1.For the ease of cutter plate being safeguarded or being changed, on main part 1, also be provided with dismountable drive end bearing bracket 11, make and to open this drive end bearing bracket 11, just can expose tool rest 18 and safeguard or change.

With further reference to Fig. 3 to Fig. 5, above-mentioned chipper also is provided with a kind of safety switching mechanism 2, and described safety switching mechanism 2 comprises tool rest 18 sides that are arranged in the described main part 1 other safety switch 20, driving lever 22, be connected first on the described hopper 3 triggers assembly 24 and be connected second on described tool rest 18 and the described end cap 11 and trigger assembly 26.

Above-mentioned safety switch 20 is a microswitch, the two states that it is connected in series mutually and has out and close with the power main switch 16 of described chipper.Described safety switch 20 and above-mentioned driving lever 22 all are arranged in the switch enclosure 28, described switch enclosure 28 roughly is made of double structure, be provided with outward extending a pair of latch 30 in it with in a pair of jack 32 that inserts safety switch 20, thereby safety switch 20 is fixed in the switch enclosure 28.At the side of latch 30, the locating slot 34 of a waist shape is set also.In the inboard, edge of switch enclosure 28, to be meshed switch enclosure 28 assemblings of double structure are finished with pair of bolts 38 thereby also be provided with pair of bolts hole 36.In addition, also be outward extended with one first hollow posts 40 and one second hollow posts 42 respectively in the two sides of switch enclosure 28.This first hollow posts 40 can be housed in the through hole 17 that is arranged on the lower cover 13.In addition, on the end face of switch enclosure 28, be extended with convex 44, and on convex 44, offer through hole 46, thereby screw 48 is passed through hole 46 then and the switch enclosure 28 that will be connected to after will assembling on the lower cover 13 is fixed on the lower cover 13 of main part 1.

The both sides of the first end 21 of above-mentioned driving lever 22 extend outward a pair of reference column 23, and this is contained in the corresponding locating slot 34 of above-mentioned switch enclosure 28 movably to reference column 23.In addition, first end 21 also is provided with contact salient point 25.Driving lever 22 has certain arcuation with respect to the second end 27 of first end 21, and is provided with contacting surface 29.In addition, driving lever 22 also has the ejection face 224 with respect to contacting surface 29, the contact 202 that this ejection face 224 can ejection safety switch 20, thus make the state that safety switch 20 is in out.

As shown in Figure 6, the above-mentioned first triggering assembly 24 comprises first push rod 31 that is fixedly connected on the described hopper 3.When hopper 3 was mounted to the lower cover 13 of described main part 1, this first push rod 31 can pass first hollow posts 40 of the through hole 17 (Fig. 5) that is arranged on the lower cover 13 and switch enclosure 28 and be matched and can promote driving lever 22 and move with the contacting surface 29 of above-mentioned driving lever 22.

As shown in Figure 7, above-mentioned tool rest 18 is provided with the accepting hole 182 of lengthwise type to accommodate the above-mentioned second triggering assembly 26.This second triggers assembly 26 and mainly comprises second push rod 33 that is provided with in the described tool rest 18 and described end cap 11 is connected to bolt 35 on the described tool rest 18.When described bolt 35 was connected to described end cap 11 on the described tool rest 18 fully, described bolt 35 can promote described second push rod 33, made that described second push rod 33 and described driving lever 22 are matched.In addition, described second triggers assembly 26 also comprises lining 37, and described lining 37 is housed in the accepting hole 182 of described tool rest 18, and described second push rod 33 partly is housed in the described lining 37.Also be provided with flexible member 39 in the described lining, this flexible member is a stage clip, it is arranged between the end 332 of the bottom surface of described lining 37 and described second push rod 33, thereby and lining 37 is stretched out in the other end 334 of this second push rod 33 and second hollow posts 42 of passing the switch enclosure 28 that is positioned at accepting hole 182 contacts with the contact salient point 25 of above-mentioned driving lever 22.Like this, after above-mentioned tool rest 18 is fixed to aforementioned body portion 1 by bolt (figure does not show), end cap 11 covers the front end face 182 of tool rest 18 then, by bolt 35 end cap 11 is fixed on the described tool rest 18 again, at this moment, bolt 35 passes the bolt hole 112 of end cap 11 and enters in the accepting hole 182 of tool rest 18, and promote to be positioned at the lining 37 of accepting hole 182, thereby thereby the contact salient point 25 that promotes the second end 334 promotion driving levers 22 of second push rod 33 in the lining 37 so that second push rod 33 makes driving lever 22 move.

By the way, first trigger assembly 24 and second and trigger assembly 26 and all can promote driving lever 22 respectively and move.Yet, as shown in Figure 6, when having only the first triggering assembly 24 to be in place, it is hopper 3 is mounted to main part 1 suitably by screw 39 bottom, and second trigger assembly 26 and be not in place, and also is that end cap 11 is not installed under the situation of front end face 182 of the tool rest 18 in the main part 1 by bolt 35 appropriate covering, and has only first to trigger assembly 24 and promote driving levers 22, driving lever 22 is not enough to depress the contact 202 of safety switch 20, thereby makes safety switch 20 keep the state that disconnects; Similarly, as shown in Figure 7, when having only the second triggering assembly 26 to be in place, it is end cap 11 is installed on the tool rest 18 in the main part 1 by bolt 35 appropriate covering front end face 182, and under the situation that the first triggering assembly 24 is not in place, also be hopper 3 is not mounted to main part 1 suitably by screw 41 bottom, have only second to trigger assembly 26 promotion driving levers 22, driving lever 22 is not enough to depress the contact 202 of safety switch 20, thereby makes safety switch 20 keep the state that disconnects.Have only when first and trigger assembly 24 and second and trigger under the situation that assembly 26 all is in place, make a concerted effort to promote driving lever 22 together by them, driving lever 22 just can be depressed the contact 202 of safety switch 20, make safety switch 20 be in closed state, thereby the feasible power supply main line ability closure that is in series with safety switch 20, realize the running of the cutting tool of chipper of the present utility model, as shown in Figure 1.Thereby, setting by safety switching mechanism of the present utility model, avoided at end cap 11 or/and starter motor and drive the working at high speed of cutting tool under the situation that hopper 3 appropriately is not in place, guaranteed user's handling safety, and, such safety switching mechanism relatively simple for structure, with low cost.

Claims

1. the safety switching mechanism of a chipper, described chipper comprises main part and removably is mounted to hopper on the described main part, described main part comprises tool rest and dismountable end cap that is installed on the described tool rest, described safety switching mechanism comprises the safety switch that is arranged in the described main part, described safety switch is connected in series mutually with the power main switch of described chipper and has and disconnects and closed two states, it is characterized in that: described safety switching mechanism also comprises driving lever, be connected first on the described hopper and trigger assembly, and be connected second on described tool rest and the described end cap and trigger assembly, the described first triggering assembly and described second triggers assembly can be matched with described driving lever respectively, trigger assembly and described second and trigger assembly simultaneously with described driving lever when matched when described first, described driving lever triggers described safety switch makes described safety switch be in closed state; When described first triggered assembly or described second and trigger assembly and described driving lever and be separated, described driving lever and described safety switch were separated and make described safety switch be in the state of disconnection.

2. the safety switching mechanism of chipper as claimed in claim 1, it is characterized in that: described first triggers assembly comprises first push rod that is arranged on the described hopper, when described hopper was mounted to the below of described main part, described first push rod and described driving lever were matched.

3. the safety switching mechanism of chipper as claimed in claim 1, it is characterized in that: described second triggers assembly comprises second push rod that is arranged in the described tool rest and described end cap is connected to bolt on the described tool rest, when described bolt is connected to described end cap on the described tool rest fully, described bolt can promote described second push rod, makes that described second push rod and described driving lever are matched.

4. the safety switching mechanism of chipper as claimed in claim 3, it is characterized in that: described second triggers assembly also comprises lining, described lining is housed in the described tool rest, and described second push rod partly is housed in the described lining, and described bolt can promote described lining.

5. the safety switching mechanism of chipper as claimed in claim 4, it is characterized in that: be provided with flexible member in the described lining, described flexible member is connected between the bottom surface and described second push rod of described lining.

6. the safety switching mechanism of chipper as claimed in claim 1, it is characterized in that: described driving lever can be rotatably set in the side of described safety switch.

7. the safety switching mechanism of chipper as claimed in claim 6, it is characterized in that: described driving lever and described safety switch all are arranged in the switch enclosure, and described switch enclosure is fixedly installed in the described main part.

8. the safety switching mechanism of chipper as claimed in claim 7 is characterized in that: described switch enclosure is outward extended with first hollow posts and second hollow posts and triggers assembly and second and trigger assembly partly to accommodate described first respectively.

9. as the safety switching mechanism of any one described chipper in the claim 1 to 8, it is characterized in that: described safety switch is a microswitch.