The juice extractor that a kind of safety switch is waterproof
Technical field
The present invention relates to juice extractor, it is the juice extractor that a kind of safety switch is waterproof.
Background technology
Juice extractor is a kind of machine that fruit and vegerable can quickly be squeezed into fruit and vegetable juice.
Existing juice extractor includes base, motor and jar, and motor is arranged in base, the opening of base
The base of place and jar cooperates, and when jar is positioned over the opening part of base, arranges at base openings
Having safety switch, when jar presses pressure downwards, safety switch is connected, in motor could drive jar
Fruit and vegerable are smashed by agitating device.
But juice extractor is in use, how in jar, to add drinking water and to be neutralized, therefore safety open
Close water inlet the most in operation, cause safety switch malfunctioning, there is hidden danger.
Summary of the invention
The goal of the invention of the present invention is to invade asking of circuit in safety switch to solve liquid or steam
Topic, it is provided that the juice extractor that a kind of safety switch is waterproof, jar do not put into and under press time, safety switch can
Effectively to completely cut off liquid, protection switch internal circuit, increase the service life.
In order to realize foregoing invention purpose, present invention employs techniques below scheme: a kind of safety switch is waterproof
Juice extractor, including base, motor, safety switch and jar, described motor is positioned at base, stirring
Being provided with sleeve bottom Bei, base is provided with the slot coordinated with sleeve, and described slot is provided with groove, safety switch
Be positioned at groove, sleeve be externally provided with for depressing time can promote the projection of safety switch, safety switch and motor
It is connected;Described safety switch includes housing, shift knob, automatically isolation door and for shift knob
Main spring;Described shift knob includes pressing splenium and movable contact, presses splenium and is positioned at outside housing, movable tactile
Head sets rear end has protuberance, main spring to be sheathed on movable contact side surface, presses splenium and matches with projection;Described
Housing is provided with the first cavity volume and the second cavity volume, is provided with the first terminals being parallelly mounted to housing side in housing
Son and the second binding post, the first binding post end is provided with the first contact site, and the first contact site is in first
In cavity volume, the second binding post end is provided with the second contact site can being conductively connected, the second contact site with protuberance
Being positioned at the inwall of the second cavity volume, movable contact, protuberance and main spring are respectively positioned in the second cavity volume;Described automatically
Isolation door includes line traffic control, assembly pulley and the open and close door of band resetting-mechanism, movable contact by assembly pulley and
The cooperation of line traffic control is connected with open and close door indexing, and described open and close door is between the first inner chamber and the second inner chamber;Live
Moving contact controls the keying of open and close door by pullling line traffic control;
When shift knob pushes on movable contact moves forward and promotes main spring to compress, movable contact is drawn by line traffic control
Opening described open and close door, movable contact front end is pressed on the first contact site, and the protuberance on movable contact compresses contact
Second contact site of the second binding post, the second contact site, protuberance, the front end of movable contact contact with first
Portion is sequentially communicated;
When shift knob resets, the protuberance on described movable contact leaves the second of described second binding post
Contact site, open and close door resets and closes, and switching off.
Preferably, the first contact site of described first binding post uses memory alloy material, the first contact site
Arc contact portion including end, for the contact of same movable contact makes arc contact portion separate with movable contact with heating
Kink;Described end is positioned at the two ends of the first contact site and fixes with enclosure interior, described bending part
Between arc contact portion and end.
Preferably, the chute for open and close door telescopic slide, the resetting-mechanism bag of open and close door it are provided with in described housing
Including back-moving spring, back-moving spring is positioned at chute and presses on one end of open and close door.
Preferably, described second contact site is provided with the inclined-plane of movable contact rear end.
Preferably, described second contact site is the becket on band inclined-plane, and the inclined-plane of becket is towards movable contact
Rear end.
Preferably, described shift knob direction is horizontally disposed with.
Preferably, it is provided with two in described housing altogether and automatically completely cuts off door about shift knob center specular
Structure.
Preferably, the side that said two open and close door is relative is equipped with sealing strip.
Preferably, described open and close door bottom is provided with spacing base plate, sets between described spacing base plate and chute diapire
There is sealing ring.
Preferably, the splenium of pressing of described projection and shift knob is equipped with inclined-plane.
Compared with prior art, have employed the juice extractor that the safety switch of technique scheme is waterproof, have as
Lower beneficial effect:
One, use the waterproof juice extractor of safety switch of the present invention, have and if only if projection on jar sleeve
Time in groove in press-in base slot, safety switch could start smoothly, it is achieved the rotation of motor, therefore
Safety switch ensure that the installation site of jar has put in place in use, and using method is correct.
Two, safety switch is positioned at the groove of base slot, and protuberance is positioned at the bottom of jar sleeve, because of
This only has jar to press completely when being pressed onto the end can to open, and safety switch is difficult to by user foreign object
Stirring, safety is high.
Three, the safety switch in juice extractor, can effectively barrier liquid and water by automatically isolation door
Vapour invades in juice extractor circuit, when shift knob is ejected by shift knob main spring in the case of not stressing,
Open and close door is ejected by the effect of resetting-mechanism, the first cavity volume and the second cavity volume is completely cut off and comes, effectively stops
Steam or liquid enter in the first binding post and its first contact site, make the circuit in safety switch completely every
Come absolutely, it is ensured that shift knob press lower before, on-off circuit is in absolute off-state, at the first contact site
In completely enclosed state, whole socket is in cold state, also will not safety open even if there being liquid to enter
Close damage, it is to avoid short circuit and burn.
When the pressing portion of inclined-plane or cambered surface pull switch button is pressed and pass through down to the projection of jar, shift knob
During pressurized reach, main spring is compressed, and movable contact is followed shift knob and together advanced and pass through line traffic control and cunning
Wheels drive open and close door to open, and open and close door compressing resetting-mechanism is also opened, and enables movable contact to contact first
First contact site of binding post, simultaneously the second contact site of protrusions contact second binding post of movable contact,
First binding post and the second binding post are real by the effect of the first contact site-movable contact the-the second contact site
Existing electric connection, makes electrical power rotate, and juice extractor is started working operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the waterproof juice extractor of safety switch of the present invention;
Fig. 2 is the structural representation of the waterproof juice extractor of safety switch of the present invention;
Fig. 3 is the structural representation of the waterproof juice extractor of safety switch of the present invention;
Fig. 4 is the partial enlarged drawing in Fig. 2 at A;
Fig. 5 is the partial enlarged drawing in Fig. 3 at B;
Fig. 6 is the sectional view (safety switch is off) of safety switch in embodiment 1;
Fig. 7 is the sectional view (safety switch is in closure state) of safety switch in embodiment 1;
Fig. 8 is the sectional view (safety switch is off) automatically completely cutting off door in embodiment 1;
Fig. 9 is the sectional view (safety switch is in closure state) automatically completely cutting off door in embodiment 1;
Figure 10 is the first contact site and the connection diagram (normal condition) of movable contact in embodiment 1;
Figure 11 is the first contact site and the connection diagram (overload) of movable contact in embodiment 1;
Figure 12 is the sectional view (safety switch is in closure state) of safety switch in embodiment 2;
Figure 13 is the structural representation of the second contact site in embodiment 2.
Reference: 1, safety switch;10, the first binding post;100, the first contact site;1000、
End;1001, arc contact portion;1002, kink;11, the second binding post;110, the second contact site;
20, line traffic control;21, open and close door;210, back-moving spring;211, chute;212, spacing base plate;213、
Sealing ring;214, sealing ring;215, sealing strip;22, assembly pulley;3, shift knob;30, main spring;
31, movable contact;310, protuberance;4, base;40, slot;41, groove;5, jar;50、
Sleeve;51, projection.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described further.
Embodiment 1:
Juice extractor as waterproof in Fig. 1 to a kind of safety switch shown in 11, including base 4, motor, safety
Switch and jar 5, motor is positioned at base 4, is provided with sleeve 50 bottom jar 5, and base 4 is provided with
The slot 40 coordinated with sleeve 50, slot 40 is provided with groove 41, and safety switch is positioned at groove 41, inserts
Set 50 be externally provided with for depressing time can promote the projection 51 of safety switch, safety switch is connected with motor.
The position of safety switch is in the groove 41 of base 4 slot 40, and safety switch is difficult to by finger or rod
Shape thing extrudes, and staff keeps away to touch and causes motor to open the threat brought, and improves safety greatly.
Secondly as safety switch is located in groove 41, have and if only if projection on jar 5 sleeve 50
Time in groove 41 on 51 press-in base 4 slots 40, safety switch could start smoothly, it is achieved motor
Rotating, therefore safety switch ensure that the installation site of jar has put in place in use, using method
Correctly.
Safety switch in the present embodiment includes that housing 1, shift knob 3, two are to isolation door and use automatically
In the main spring 30 of shift knob, isolation door is about shift knob 3 center specular automatically.
Shift knob 3 includes pressing splenium and movable contact 31, presses splenium and is positioned at outside housing 1, movable contact 31
If rear end has protuberance 310, main spring 30 to be sheathed on movable contact 31 side surface.
Housing 1 is provided with the first cavity volume and the second cavity volume, is provided with and is parallelly mounted to the of housing side in housing 1
One binding post 10 and the second binding post 11, the first binding post 10 end is provided with the first contact site 100,
First contact site 100 is positioned at the first cavity volume, and the second binding post 11 end is provided with and can conduct electricity with protuberance 310
The second contact site 110 connected, the second contact site 110 is positioned at the inwall of the second cavity volume, movable contact 31,
Protuberance 310 and main spring 30 are respectively positioned in the second cavity volume.
Automatically isolation door includes the open and close door 21 of line traffic control 20, assembly pulley 22 and band resetting-mechanism, movable
Contact 31 is connected with open and close door 21 indexing by the cooperation of assembly pulley 22 and line traffic control 20, and open and close door 21 is positioned at
Between first inner chamber and the second inner chamber;Movable contact 31 controls the keying of open and close door by pullling line traffic control 20.
Being provided with the chute 211 for open and close door 21 telescopic slide in housing, the resetting-mechanism of open and close door 21 includes multiple
Position spring 210, back-moving spring 210 is positioned at chute and presses on one end of open and close door 21, and open and close door 21 can
To reciprocatingly slide in chute 211, being similar to gate or push, back-moving spring 210 carries for open and close door 21
For the elastic force resetted.
As shown in Figure 6 and Figure 8, when shift knob 3 in the case of not stressing main spring 30 by shift knob
30 eject, and open and close door 21 is ejected by the effect of back-moving spring 210, and the open and close door of both sides all closes to middle part
And compress, the first cavity volume and the second cavity volume are completely cut off and comes, effectively stop steam or liquid to enter first and connect
In line terminals 10 and its first contact site 100, make the circuit in switch completely cut off completely and come, it is ensured that at switch
Before button presses 3 times, on-off circuit is in absolute off-state, and the first contact site 100 is in completely enclosed shape
State.
Projection 51 extruding switch as shown in figures 7 and 9, when jar 5 is pressed downward against, on jar 5
Button 3 press splenium, during the reach of shift knob 3 pressurized, main spring 30 is compressed, movable contact 31 with
Together advance with shift knob 3 and pass through line traffic control 20 and assembly pulley 22 drives open and close door 21 to open, open and close door
21 compressing back-moving springs 210 are also opened to both sides, and middle part forms a passage passed through for movable contact 31,
Make movable contact 31 can contact the first contact site 100, simultaneously movable contact 31 of the first binding post 10
Protuberance 310 contact the second contact site 110 of the second binding post 11, the first binding post 10 and second connects
Line terminals 10 realizes electric connection by the effect of first contact site 100-movable contact 31-the second contact site 110,
Electric machine rotation, it is achieved the juice-extracting process of jar.
Second contact site 110 is provided with the inclined-plane of movable contact 31 rear end, and the second contact site 110 can increase
Add the contact area of itself and protuberance 310, effectively avoid contact with bad phenomenon, improve safety.
Switch upward, then, when there being liquid to come in, can directly be passed through by action of gravity in shift knob 3 direction
The gap of button 3 and the second cavity volume enters in the second cavity volume, and then enters into the cunning automatically completely cutting off door
In the space of wheels 22 and line traffic control 20, and threaten the first contact site 100 in the first cavity volume.
Therefore, shift knob 3 direction is horizontally disposed with, and liquid can be made to be not easy directly and entered by action of gravity
Enter in the second cavity volume.
The side that two open and close doors 21 are relative is equipped with sealing strip 215.When open and close door closes, sealing strip 215
Can effectively improve the seal of open and close door, prevent liquid and steam from being entered in the first cavity volume by the second cavity volume.
Open and close door 21 bottom is provided with spacing base plate 212, is provided with between spacing base plate 212 and chute 211 diapire
Sealing ring 213, the pressure applied spacing base plate 212 by back-moving spring 210, spacing base plate 212 compresses
Sealing ring 213, improves air-tightness and water proofing property.
The line traffic control 20 in the present embodiment exit in the second cavity volume is positioned at protuberance 310 position, is therefore going out
Sealing ring 214 it is provided with at Kou, when movable contact 31 resets under the effect of main spring 30 elastic force, protuberance
310 are pressed in sealing ring 214, and the steam being prevented effectively from the second cavity volume enters assembly pulley 22 and line traffic control 20 institute
Cavity in.
At above three, sealing member (sealing strip 215, sealing ring 213 and sealing ring 214) is all at shift knob
3 are in the state of not stressing, and the elastic force effect of main spring 30 and back-moving spring 210 makes sealing member be compressed, from
And play sealing effectiveness.
First contact site 100 of the first binding post 10 uses memory alloy material, and the first contact site 100 wraps
Include end 1000, make for the arc contact portion 1001 of same movable contact contact and heating arc contact portion 1001 with
The kink 1002 that movable contact 31 separates;End 1000 is positioned at two ends and and the shell of the first contact site 100
Body 1 is internal fixing, and kink 1002 is between arc contact portion 1001 and end 1000.
The memory alloy material used in the present embodiment has a feature, i.e. in the first contact site 100 temperature
When rising, the bending angle of kink 1002 can become big, and end 1000 is for the first contact site 100 two ends
Fixing, when short circuit occurs in motor internal fault, the circuital current in safety switch increases suddenly, and first
Contact site 100 temperature rapid increase, therefore arranges memorial alloy and can be prevented effectively from short circuit to motor, safety
Switch and complete machine affect.
As shown in Figure 10 and Figure 11, when the power switching vigour part is excessive or transships, the first contact site 100
The electric current inside passed through is relatively big, and the heat of generation becomes many, and the first contact site 100 bulk temperature rises, due to end
Two ends, portion 1000 are fixing, and therefore kink 1002 shrinks and close to two ends, and arc contact portion 1001 is whole
Body offsets to the left side, produces spacing with movable contact 31 and disconnects with movable contact 31, and now switch is in
Off-state, it is to avoid transship with juice extractor, it is ensured that safety.
Embodiment 2:
As shown in Figure 12 and Figure 13, the present embodiment is relative to the difference of embodiment 1: the second contact site 110
In the becket on band inclined-plane, the inclined-plane of becket is towards movable contact 31 rear end, and protuberance 310 ringwise, is lived
Moving contact 30 is round table-like.
The effect of its correspondence is as follows: first, and the annular chamfer of becket constitutes a conical surface, the second contact site
110 contacts area that can increase itself and protuberance 310, effectively avoid contact with bad phenomenon, improve safety
Property.
Secondly, the cone match annular protrusion 310 of becket, protuberance 310 can be made concentric with becket, protect
Demonstrate,prove the concentric rate of the two, make the top of contact can be directed at the arc contact portion of the first contact site 100 accurately
1001, it is to avoid the loose contact produced during misalignment.
It is above the preferred embodiment of the present invention, for the person of ordinary skill of the art without departing from this
On the premise of inventive principle, it is also possible to make some modification and improvement, these also should be regarded as the protection of the present invention
Scope.