Press pressure type elastic safety switch module
Technical field
The present invention relates to pressing pressure type elastic safety switch module in circuit controller.
Background technology
Switch is the device for control circuit power on/off, but due to switch in lie substantially in energising state (i.e.
Voltage is maintained on live wire), therefore when the switch not used time, the circuit in switch still leaves electricity, when liquid access switch, by
Voltage is still maintained on live wire, the moment that liquid enters makes the short circuit in switch, lead to electrical equipment or switch to burn, deposit
In higher safety issue.
Meanwhile, if switch is in the higher environment of steam for a long time, steam is aging by acceleration switch internal circuit
And oxidation, lead to on-off control failure.
The circuit in liquid or moisture switch therefore how is stoped to be a problem demanding prompt solution.
Content of the invention
The invention aims to provide pressing pressure type elastic safety switch module, waterproof and non-moisture-sensitive is aging, opening
The completely enclosed state that is in inside it is can ensure that, security performance is high when pass is not powered on.
In order to realize foregoing invention purpose, present invention employs technical scheme below:Press pressure type elastic safety switch module,
Including housing and shift knob;
Described shift knob includes movable contact, presses the silica gel leather cup that splenium and movable telescopic reset, and presses splenium and is located at
Outside housing, press splenium and move back and forth relative to housing, press and between splenium and housing, be provided with the elastic component making to press splenium elastic reset, institute
State silica gel leather cup and be located at the end relative with pressing splenium with movable contact;
Described housing is provided with the first cavity volume and the second cavity volume, is provided with the first wiring being parallelly mounted to housing side in housing
Terminal and the second binding post, the first binding post end is provided with the first contact site, and the first contact site is in the first cavity volume;The
Two binding post ends are provided with and are electrically connected second connecting portion with movable contact, and second connecting portion is located in the second cavity volume, and activity is touched
Head and silica gel leather cup are respectively positioned in the second cavity volume;
Silica gel leather cup includes the chassis portion of plate-like and the quarrel portion of tubulose, and the periphery in described chassis portion is solid with inner walls phase
Fixed, it is provided with the accommodating chamber accommodating movable contact in the middle part of described quarrel portion, quarrel portion is connected and synchronizing moving with pressing splenium, described
Chassis portion is provided with the junction in quarrel portion and pushes that silica gel leather cup can make accommodating chamber connect with the first cavity volume and silica gel leather cup is multiple
The breath oral area of accommodating chamber can be closed, described chassis portion, quarrel portion and breath oral area are integrally formed setting during position.;
It is additionally provided with the holding set increasing breath oral area close encapsulation for chassis portion when recovering, described holding in described housing
Set is fixed on enclosure interior, and described holding covers for annular external member, keeps set longitudinal section L-shaped, keeps set to include sleeve and guarantor
Hold base plate, described quarrel portion slip cap is in sleeve;When shift knob is not restored to the original state by external force, described breath oral area is in set
Cylinder and holding base plate intersection extrude and close accommodating chamber, and the thickness of described breath oral area is more than the wall thickness in quarrel portion;
When shift knob pushes on movable contact inwardly moves, press splenium and inwardly extrude silica gel leather cup, quarrel portion moves inward
And extrude chassis portion and deform laterally, breath oral area, with the outside side shifting in chassis portion, connects between accommodating chamber and the first cavity volume and makes
Movable contact passes through, and movable contact front end is pressed on the first contact site, and second connecting portion, movable contact and the first contact site are successively
It is electrically connected, switch is in connected state;
When shift knob is not subject to external force, under the chassis portion elastic recoil effect of silica gel leather cup, quarrel portion drives and lives
Moving contact is together displaced outwardly, movable contact and the first contact portion from;And cease oral area to be recovered in situ by outside, cease oral area
Extrude and close the passage between accommodating chamber and the first cavity volume, switch is off.
Preferably, it is additionally provided with the guiding conical plate for chassis portion movement and deformation laterally, described guide cone in described housing
Plate is tapered, and guiding conical plate is located between the first cavity volume and the second cavity volume, is provided with and passes through for movable contact in the middle part of guiding conical plate
Through hole, described through hole connects the first cavity volume and the second cavity volume.
Preferably, the angle of the cone angle of described guiding vertebral plate is 130 ° -160 °.
Preferably, described chassis portion and the junction of inner walls are provided with the fold that more large deformation amount occurs for chassis portion
Ring, described fold ring ringwise wavy, described fold ring and chassis portion are integrally formed setting.
Preferably, described movable contact includes contact end and conductive contact bar portion, offers in described rubber cup
Bar portion lock chamber and end lock chamber, described end lock chamber is located at the silica gel leather cup side pressing splenium place, and contact bar portion is solid
Fix intracavity due to bar portion, contact end is fixed on end fixes intracavity.
Preferably, the first contact site of described first binding post adopts memory alloy material, and the first contact site includes holding
Portion, for movable contact contact arc contact portion and heating make arc contact portion kink detached with movable contact;Described end
Portion is located at the two ends of the first contact site and is fixed with enclosure interior, and described bending part is between arc contact portion and end.
Preferably, described accommodating chamber is in elliposoidal.
Preferably, described movable contact is made of aluminum or copper.
Preferably, described sleeve and the holding perpendicular setting of base plate;The perpendicular setting in chassis portion and quarrel portion.
Compared with prior art, employ technique scheme presses pressure type elastic safety switch module, has and has as follows
Beneficial effect:
First, the periphery in the chassis portion of silica gel leather cup is connected with inner walls, can effectively by the first cavity volume of housing and
Second cavity volume is completely isolated, and steam only can enter in the second cavity volume it is impossible to enter first from the junction in housing and quarrel portion
Cavity volume, increases the protection to the first binding post (the first binding post is used for same live wire and connects).
2nd, because movable contact is fixed on inside silica gel leather cup, movable contact occurs slight crack in use unavoidably,
Steam enters with the gap of movable contact and the inwall in quarrel portion and accommodates intracavity, by setting up dynamic clamping head and quiet clamping head, shell pressing splenium
Internal portion sets up holding set.By dynamic clamping head and quiet clamping head, quarrel portion is pullled, make breath oral area by breath oral area during outer entrance sleeve to appearance
Chamber generation of receiving extrudes, and the accommodating chamber that movable contact is located completely closes, and makes the first appearance that accommodating chamber is located with the first contact site
Chamber completely cuts off completely, even if steam enters accommodating chamber and also can be stopped by breath oral area so that whole safety switch assembly is in disconnection
State.
3rd, wherein keep the cooperation of set and elastic component, during resilience, elastic component produces elasticity to silica gel leather cup and pulls power, makes
Breath oral area by keep base plate can produce when entering sleeve enough pull power, be allowed to be converted into the extruding to accommodating chamber for the breath oral area
Power, sealing is better, and obturation effect is higher.
Brief description
Fig. 1 presses the sectional view of pressure type elastic safety switch module embodiment (do not stress state) for the present invention;
Fig. 2 presses the sectional view of pressure type elastic safety switch module embodiment (pressing splenium stress) for the present invention;
Fig. 3 is the sectional view of silica gel leather cup in the present embodiment;
Fig. 4 is the sectional view of movable contact in the present embodiment;
Fig. 5 be the present embodiment in silica gel leather cup partly cut open structural representation;
Fig. 6 is the structural representation keeping in the present embodiment covering;
Fig. 7 is the connection diagram (normal condition) of the first contact site and movable contact in the present embodiment;
Fig. 8 is the connection diagram (overload) of the first contact site and movable contact in the present embodiment.
Reference:1st, housing;10th, the first binding post;100th, the first contact site;1000th, end;1001st, arc touches
Portion;1002nd, kink;11st, the second binding post;110th, second connecting portion;12nd, guiding conical plate;13rd, spacing barrel;2nd, keep
Set;20th, keep base plate;21st, sleeve;30th, silica gel leather cup;30a, chassis portion;30b, quarrel portion;300th, cease oral area;301st, fold
Ring;302nd, accommodating chamber;310th, bar portion lock chamber;311st, end lock chamber;313rd, rigid outer layer;32nd, movable contact;320th, contact
Bar portion;321st, contact end;33rd, press splenium;330th, press gland wall.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described further.
Press pressure type elastic safety switch module as shown in Fig. 1 is to 8, including housing and shift knob.
As shown in figure 1, shift knob includes movable contact 32, presses the silica gel leather cup that splenium 33 and movable telescopic reset
30, press splenium 33 and be located at outside housing, silica gel leather cup 30 is located at and presses the relative end of splenium 33 with movable contact 32.
Press splenium 33 and press button using plastics, middle part is provided with the elastic component 34 for pressing splenium 33 reset, presses pressure by pushing
Portion 33 can realize the dilatation of silica gel leather cup 30, in the presence of the elastic reset in elastic component 34 pulls power simultaneously, permissible
Allow rubber cup 30 Rapid reset, the elastic component 34 in the present embodiment adopts column spring.
The surface of housing is provided with spacing barrel 13, presses splenium 33 and includes pressing gland wall 330, by spacing barrel 13 with press pressure
The reciprocal telescopic of the two is realized in the spacing cooperation of tegmental wall 330, and ensures that pressing splenium 33 will not fall off.
It is provided with the first binding post 10 being parallelly mounted to housing side and the second binding post 11, housing includes in housing
First cavity volume and the second cavity volume, the first binding post 10 end is provided with the first contact site 100, and the first contact site 100 is located at first
In cavity volume;Second binding post 11 end is provided with second connecting portion 110, and second connecting portion 110 is electrically connected with movable contact 32, the
Two connecting portions 110, movable contact 32 and silica gel leather cup 30 are respectively positioned in the second cavity volume.
It is additionally provided with holding set 2 and guiding conical plate 12 in housing.Keep set 2 to be fixed on enclosure interior, keep set 2 to be annular sleeve
Part, keeps set 2 longitudinal sections L-shaped, keeps set 2 to include sleeve 21 and keep base plate 20, quarrel portion 30b is sheathed on sleeve 21
Interior, the thickness of breath oral area 300 is more than the inwall radius of sleeve 21;When shift knob is not restored to the original state by external force, cease oral area 300
Extrude and close accommodating chamber 302 in sleeve 21 and holding base plate 20 intersection.Increase breath oral area 300 when silica gel leather cup 30 recovers
Sealing to accommodating chamber 302.
As shown in figure 3, silica gel leather cup 30 includes chassis portion 30a and quarrel portion 30b, 30a is disc-shaped in chassis portion, quarrel portion
In a tubular form, quarrel portion 30b is vertically connected at chassis portion 30a to 30b, chassis portion 30a be located at guiding conical plate 12 and keep base plate 20 it
Between.
The periphery of chassis portion 30a is fixed with inner walls phase by fold ring 301, fold ring 301 be located at chassis portion 30a and
Between inner walls, fold ring 301 ringwise wavy, fold ring 301 and chassis portion 30a are integrally formed setting, fold ring
301 can be compressed to a greater extent and be stretched it is ensured that chassis portion 30a can occur to deform to a greater extent.
It is provided with the accommodating chamber 302 accommodating movable contact 32, the connection of chassis portion 30a and quarrel portion 30b in the middle part of quarrel portion 30b
Place is provided with breath oral area 300, and the wall thickness of breath oral area 300 is more than the wall thickness of quarrel portion 30b.
Guiding conical plate 12 can guide to the moving direction of chassis portion 30a, and guiding conical plate 12 is tapered, guiding conical plate
12 are located between the first cavity volume and the second cavity volume, are provided with the through hole passing through for movable contact 32 in the middle part of guiding conical plate 12, and through hole is even
Logical first cavity volume and the second cavity volume.
As shown in Fig. 2 pressing splenium 33 when being pushed to the left by right side, spring is compressed, press splenium 33 drive quarrel portion 30b to
Case inside move, quarrel portion 30b extruding breath oral area 300 enter guiding conical plate 12 and keep base plate 20 between, chassis portion 30a to
The periphery side shifting of the second cavity volume, chassis portion 30a is extruded and drives fold ring 301 to deform, and breath oral area 300 also moves to periphery
Dynamic, the accommodating chamber 302 at middle part is opened, and the contact bar portion 320 of movable contact 32 passes through the through hole and first of guiding conical plate 12
Contact site 100 contacts, and realizes the electric connection of second connecting portion 110, movable contact 32 and the first contact site 100, at switch module
In connected state.
As shown in figure 1, when pressing splenium 33 no longer stress, under the reset response of spring restoring force, to outside housing
Side will be pressed splenium 33 and be ejected, and quarrel portion 30b pulls to the right reset, and chassis portion 30a is replied from the two ends of the second cavity volume to middle part, live
Moving contact 32 is followed quarrel portion 30b and is moved to outside from enclosure interior, and breath oral area 300 also has outside to enter the sleeve keeping covering 2
In 21, due to sleeve 21 barrel internal diameter be less than breath oral area 300 thickness, breath oral area 300 in the presence of power pullled by spring in
Sleeve 21 and keep the junction of base plate 20 mutually to extrude, accommodating chamber 302 is closed, and disconnects accommodating chamber 302 and the first cavity volume
Connect, by the rigid sealing keeping set 2 to increased breath oral area 300.
The plastic material pressing splenium 33 using hard is as pressing button, and coordinates spacing barrel 13 and press gland wall 330, can
So that pressing splenium 33 there is certain anti-bending strength, even if press during pressure Impact direction producing crooked, also will not make to press pressure
Cannot stretch in portion 33.
Movable contact 32 is in T-shape, including contact end 321 and conductive contact bar portion 320, opens up in quarrel portion 30b
There are bar portion lock chamber 310 and end lock chamber 311, end lock chamber 311 is located at and presses the one of the corresponding silica gel leather cup 30 of splenium 33
Side, contact bar portion 320 is fixed in bar portion lock chamber 310, and contact end 321 is fixed in end lock chamber 311.
Bar portion lock chamber 310 and end lock chamber 311 effectively improve fixation in silica gel leather cup 30 for the movable contact 32, prevent
Stop skew and the dislocation abjection phenomenon that it produces in rubber cup 30 deformation and moving process.
First contact site 100 of the first binding post 10 adopts memory alloy material, and the first contact site 100 includes end
1000th, it is used for making arc contact portion 1001 detached with movable contact 32 curved with the arc contact portion 1001 of movable contact contact and heating
Folding part 1002;End 1000 is located at the two ends of the first contact site 100 and is fixed with enclosure interior, and kink 1002 is located at arc and touches
Between portion 1001 and end 1000.
The memory alloy material adopting in the present embodiment has a feature, that is, when the first contact site 100 temperature rises, curved
The bending angle of folding part 1002 can become big, and end 1000 is the fixation for the first contact site 100 two ends.
As shown in Figure 7 and Figure 8, when the power switching vigour part is excessive or transships, the electricity passing through in the first contact site 100
Stream is larger, and the heat of generation becomes many, and the first contact site 100 bulk temperature rises, because end 1000 two ends are fixing, therefore
Kink 1002 shrinks and close to two ends, and arc contact portion 1001 is overall to be offset to the left side, produces spacing simultaneously with movable contact 32
Disconnect with movable contact 32, now switch is off, it is to avoid electrical appliance overload is it is ensured that safety.
The above makes the preferred embodiment of the present invention, for the person of ordinary skill of the art without departing from this
On the premise of bright principle, some modifications and improvement can also be made, these also should be regarded as protection scope of the present invention.