CN207482265U - A kind of vacuum sealer for improving negative pressure sensing device - Google Patents
A kind of vacuum sealer for improving negative pressure sensing device Download PDFInfo
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- CN207482265U CN207482265U CN201721170283.XU CN201721170283U CN207482265U CN 207482265 U CN207482265 U CN 207482265U CN 201721170283 U CN201721170283 U CN 201721170283U CN 207482265 U CN207482265 U CN 207482265U
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- negative pressure
- pressure sensing
- vacuum
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Abstract
The utility model discloses a kind of vacuum sealers for improving negative pressure sensing device, housing is equipped with negative pressure sensing main body and inductive switch, first side of negative pressure sensing main body is provided with negative pressure sensing interface, the first end connection vacuum degree induction cavity of negative pressure sensing interface, the second end connection vacuum lead of negative pressure sensing interface vacuumizes chamber, the second side of negative pressure sensing main body has a switch mating surface, switch mating surface changes with the vacuum degree of vacuum lead and generates corresponding displacement, and switch mating surface coordinates with inductive switch triggering.The utility model is simple in structure, and negative pressure sensing is accurate sensitive, and simplified control circuit further reduces production cost.
Description
Technical field
The utility model is related to vacuum sealer technical field, more particularly, to a kind of vacuum for improving negative pressure sensing device
Sealing machine.
Background technology
Vacuum sealer is equipped with vacuum pump, negative pressure inductor and control circuit, vacuum pump connection vacuum lead, control
Circuit is electrically connected vacuum pump, for the power supply of vacuum pump to be powered and controlled to vacuum pump.Wherein, negative pressure inductor is special
In the sensing element of sensing negative pressure, negative pressure inductor is internally provided with pressure sensitive chip, pressure is provided with outside negative pressure inductor
Power senses interface and pressure signal output interface, pressure sensitive interface connection vacuum lead, and pressure signal output interface is electrically connected
Connection control circuit, the signal of pressure signal output interface output is pressure value, and control circuit needs to be provided with corresponding A/D conversions
The functional chips such as chip identify and judge the signal of negative pressure inductor, then the power supply of vacuum pump is controlled by control circuit, increase
Add the complexity of control circuit, the cost of negative pressure inductor and control circuit is also higher, it is therefore necessary to be improved.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of the true of improvement negative pressure sensing device
Empty sealing machine, simple in structure, negative pressure sensing is accurate sensitive, and simplified control circuit further reduces production cost.
To achieve these goals, technical solution is used by the utility model：A kind of improvement negative pressure sensing device
Vacuum sealer including housing, control circuit, negative pressure sensing main body and at least one is used to that the sensing of the power supply of vacuum pump to be controlled to open
It closes, housing is equipped with vacuum pump and vacuumizes chamber, and vacuum pump vacuumizes chamber, negative pressure sensing master by vacuum lead connection
Body and inductive switch are individually fixed in housing, inductive switch connection control circuit, and inductive switch is arranged on negative pressure sensing main body
Side, the inside setting vacuum degree induction cavity of negative pressure sensing main body, the first side of negative pressure sensing main body are provided with negative pressure sensing and connect
Mouthful, negative pressure sensing interface first end connection vacuum degree induction cavity, negative pressure sensing interface second end connection vacuum lead or
Chamber is vacuumized, the second side of negative pressure sensing main body has a switch mating surface, switchs vacuum of the mating surface with vacuum lead
Degree changes and generates corresponding displacement, and switch mating surface coordinates with inductive switch triggering.
In further technical solution, the variation tendency of the volume of the vacuum degree induction cavity is, with vacuum lead
Negative pressure value gradual increase and gradually taper up and become smaller；The process to become smaller is gradually tapered up in the volume of vacuum degree induction cavity, it is described
Switch mating surface is increasingly towards the side deformation or mobile of relative induction switch；Negative pressure sensing interface is fixed on housing, in negative pressure
Act on lower switch mating surface negative relative sensing joint displacement；Inductive switch is with the vacuum pump electrical series in control circuit
In.
In further technical solution, the inductive switch selects mechanical touch switch, and mechanical touch switch have elasticity
Contact and contact, in the initial state, switch mating surface compress elastic contact blade, and elastic contact blade touches contact, and inductive switch is in
Conducting state；After the vacuum degree of vacuum lead reaches setting value, switch mating surface becomes towards the opposite direction of elastic contact blade
Shape is moved to setting position, and switch mating surface is detached from elastic contact blade, and elastic contact blade does not touch contact, and inductive switch, which is in, to be disconnected
State.
In further technical solution, spring is provided in the vacuum degree induction cavity, spring one end is resisted against switch and matches
Conjunction face, the other end are resisted against the wall surface for being located at switch mating surface opposite side in vacuum degree induction cavity.
In further technical solution, the negative pressure sensing main body includes an extension airbag, and extension airbag is along its length
If being provided with dry elasticity gauffer, as the vacuum degree induction cavity, the first end face of extension airbag is set for the inner cavity of extension airbag
There are negative pressure sensing interface, second end face to be provided with the switch mating surface, extension airbag is along length side under suction function
To flexible, switch mating surface displacement along its length.
In further technical solution, the negative pressure sensing main body includes an elasticity drum body, the inner cavity conduct of elasticity drum body
The vacuum degree induction cavity, the wherein end face of elasticity drum body are provided with the negative pressure sensing interface, and the side of elasticity drum body is set
It is equipped with elastic eardrum, elastic eardrum is as the switch mating surface, the elastic eardrum radially interior concave change under suction function
Shape or evagination deformation.
In further technical solution, the negative pressure sensing main body includes an elasticity drum body, the inner cavity conduct of elasticity drum body
The vacuum degree induction cavity, the wherein end face of elasticity drum body are provided with the negative pressure sensing interface, the other end of elasticity drum body
Face sets flexible eardrum, and elastic eardrum is as the switch mating surface, in suction function lower switch mating surface in axial direction
Displacement, Inward deflection or evagination deformation.
In further technical solution, the pressure sensitivity answers main body to include a fixed cylinder and movable cylinder, fixed cylinder
Outer end is provided with the negative pressure sensing interface, and the outer end of movable cylinder is provided with the switch mating surface, movable cylinder
Inner end is movably set in the inner end of fixed cylinder, and cooperation, fixed cylinder and work are sealed between fixed cylinder and movable cylinder
Dynamic cylinder closes the inner cavity to be formed as the vacuum degree induction cavity, and the spring is provided in vacuum degree induction cavity, spring
One end is resisted against the end face of fixed cylinder, the other end is resisted against the end face of movable cylinder.
In further technical solution, the pressure sensitivity answers main body to include a fixed cylinder and an end cap, and the one of fixed cylinder
End set has the negative pressure sensing interface, the other end to be fixed with the end cap, and the end face of end cap is provided with an elastic surface, Gu
Safety barrel body and end cap seal cooperation, fixed cylinder and end cap close the inner cavity to be formed as the vacuum degree induction cavity, elastic surface
Surrounding outer rim be provided at least one elastic concave ring, bulge loop or concave-convex ring, elastic surface is as the switch mating surface, vacuum degree sense
It answers and the spring is provided in chamber, the one end of spring is resisted against the end face of fixed cylinder, the other end is resisted against elastic surface.
In further technical solution, the pressure sensitivity answers main body to include a fixed cylinder and movable cylinder, fixed cylinder
Outer end is provided with the negative pressure sensing interface, and the outer end of movable cylinder is provided with the switch mating surface, movable cylinder
Inner end activity is inserted in the inner cavity of fixed cylinder, and cooperation, fixed cylinder are sealed between the inner cavity of fixed cylinder and movable cylinder
The inner cavity of formation is closed between body and movable cylinder as the vacuum degree induction cavity, the bullet is provided in vacuum degree induction cavity
Spring, the one end of spring is resisted against the end face of fixed cylinder, the other end is resisted against the inner face of movable cylinder.
With the above structure, the utility model is compared to the prior art advantageously：The utility model structure
Simply, negative pressure sensing is accurate sensitive, and simplified control circuit further reduces production cost.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the structure diagram of the utility model embodiment one.
Fig. 2 is the structure diagram of the negative pressure sensing device of the utility model embodiment one.
Fig. 3 is the inductive switch of the utility model embodiment one and the structure diagram of switch mating surface triggering cooperation.
Fig. 4 is the structure diagram of the negative pressure sensing device of the utility model embodiment two.
Fig. 5 is the inductive switch of the utility model embodiment two and the structure diagram of switch mating surface triggering cooperation.
Fig. 6 is the structure diagram of the negative pressure sensing device of the utility model embodiment three.
Fig. 7 is the inductive switch of the utility model embodiment three and the structure diagram of switch mating surface triggering cooperation.
Fig. 8 is the structure diagram of the negative pressure sensing device of the utility model embodiment four.
Fig. 9 is the inductive switch of the utility model embodiment four and the structure diagram of switch mating surface triggering cooperation.
Figure 10 is the structure diagram of the negative pressure sensing device of the utility model embodiment five.
Figure 11 is the inductive switch of the utility model embodiment five and the structure diagram of switch mating surface triggering cooperation.
Figure 12 is the structure diagram of the negative pressure sensing device of the utility model embodiment six.
In figure：1st, housing；
2nd, vacuum pump 20, vacuum lead；
3rd, negative pressure sensing main body 301, spring 302, elastic gauffer 303, elasticity drum body 304, fixed cylinder 305, movable cylinder
Body 306, end cap 307, the movable cylinder of elastic concave ring 308；
31st, vacuum degree induction cavity；
32nd, mating surface is switched；
33rd, negative pressure sensing interface；
34th, inductive switch 341, elastic contact blade.
Specific embodiment
It is only the preferred embodiment of the utility model below, does not therefore limit the scope of protection of the utility model.
Embodiment one
A kind of vacuum sealer for improving negative pressure sensing device, shown in Fig. 1 to 3, including housing 1, control circuit, negative pressure sense
Answering main body 3 and at least one, housing 1 is equipped with vacuum pump 2 and vacuumizes chamber for controlling the inductive switch 34 of the power supply of vacuum pump 2
Room, vacuum pump 2 vacuumize chamber by the connection of vacuum lead 20, and negative pressure sensing main body 3 and inductive switch 34 are individually fixed in
Housing 1, inductive switch 34 connect control circuit, and inductive switch 34 is arranged on the side of negative pressure sensing main body 3, negative pressure sensing main body
3 inside setting vacuum degree induction cavity 31, the first side of negative pressure sensing main body 3 are provided with negative pressure sensing interface 33, negative pressure sensing
The first end connection vacuum degree induction cavity 31 of interface 33, the second end connection vacuum lead 20 or pumping of negative pressure sensing interface 33 are true
Plenum chamber, for sensing vacuum lead 20 or vacuumizing the vacuum degree of chamber, i.e. vacuum magnitude.Housing 1 is provided with control
Switch, control switch, inductive switch 34 and 2 electrical series of vacuum pump are in control circuit, under original state at inductive switch 34
In conducting state, when user is vacuumized, operation-control switch and it is made to be switched to conducting state, vacuum pump 2 is connected
Power supply, vacuum pump 2 are started to work, and when negative pressure value reaches setting value, inductive switch 34 disconnects, and vacuum pump 2 is stopped, and passes through
Control switch and the combination of inductive switch 34 can direct on or off vacuum pump 2 power supply, do not need to conversion circuit or chip
Control, it is not required that complicated circuit, circuit is simpler reliable, and cost is lower.
The second side of negative pressure sensing main body 3 has a switch mating surface 32, and switch mating surface 32 is with vacuum lead 20
Vacuum degree changes and generates corresponding displacement, and switch mating surface 32 coordinates with the triggering of inductive switch 34.Vacuum degree induction cavity 31
The variation tendency of volume be to gradually taper up and become smaller with the gradual increase of the negative pressure value of vacuum lead 20；In vacuum degree
The volume of induction cavity 31 gradually tapers up the process to become smaller, and switch mating surface 32 is increasingly towards the side deformation of relative induction switch 34
It is or mobile.
Inductive switch 34 can select the touch switch of contact or contactless inductive switch, such as actuating type
Switch can select contact switches, point driving switch and all kinds of stroke inductive switches etc., and inductive switch can select infrared induction
Switch, laser-correlation inductive switch or microwave inductive switch etc..
In preferred embodiment, inductive switch 34 selects mechanical touch switch, i.e. contact switches, mechanical touch switch have
Elastic contact blade 341 and contact, in the initial state, switch mating surface 32 compress elastic contact blade 341, and elastic contact blade 341, which touches, to be touched
Point, inductive switch 34 are in the conduction state；After the vacuum degree of vacuum lead 20 reaches setting value, 32 direction of mating surface is switched
The opposite Direction distortion of elastic contact blade 341 is moved to setting position, and switch mating surface 32 is detached from elastic contact blade 341, and elasticity is touched
Piece 341 does not touch contact, and inductive switch 34 is off.
Negative pressure sensing main body 3 includes an extension airbag, if extension airbag is provided with dry elasticity gauffer 302 along its length,
The inner cavity of extension airbag is provided with negative pressure sensing interface 33, second as vacuum degree induction cavity 31, the first end face of extension airbag
End face is provided with switch mating surface 32, and extension airbag stretches, switchs mating surface 32 along length along its length under suction function
Direction displacement.Negative pressure sensing interface 33 is fixed on housing, senses interface 33 in 32 negative relative of suction function lower switch mating surface
Displacement.
In preferable embodiment, spring 301 is provided in vacuum degree induction cavity 31,301 one end of spring is resisted against switch
Mating surface 32, the other end are resisted against the wall surface for being located at switch mating surface 32 opposite side in vacuum degree induction cavity 31, for providing and
Appropriate elastic force is supplemented, the addition of spring 301 makes to vacuumize the displacement of the size and switch mating surface 32 of the vacuum degree of chamber
Between variation relation be to change linearly, be more prone to adjust and control the vacuum degree that vacuumizes chamber.
Embodiment two
A kind of vacuum sealer for improving negative pressure sensing device, shown in Figure 4 and 5, the primary structure of the present embodiment and implementation
Example one is identical, and which is not described herein again, the difference is that, negative pressure sensing main body 3 includes an elasticity drum body 303, elasticity drum body
303 inner cavity is provided with negative pressure sensing interface 33, elasticity as vacuum degree induction cavity 31, the wherein end face of elasticity drum body 303
The side of drum body 303 sets flexible eardrum, and elastic eardrum is as switch mating surface 32, under suction function, elasticity drum body 303
Radially Inward deflection or the evagination deformation of the elastic eardrum of side, reaches setting value in the negative pressure value of vacuum degree induction cavity 31
When, switch mating surface 32 is detached from elastic contact blade 341, vacuum pump 2 is controlled to be stopped by control circuit.
Embodiment three
A kind of vacuum sealer for improving negative pressure sensing device, shown in Fig. 6 and 7, the primary structure of the present embodiment and implementation
Example one is identical, and which is not described herein again, the difference is that, negative pressure sensing main body 3 includes an elasticity drum body 303, elasticity drum body
303 inner cavity is provided with negative pressure sensing interface 33, elasticity as vacuum degree induction cavity 31, the wherein end face of elasticity drum body 303
The other end of drum body 303 sets flexible eardrum, and elastic eardrum coordinates as switch mating surface 32 in suction function lower switch
The in axial direction displacement of face 32 or suction function lower switch mating surface 32 in axial direction Inward deflection or evagination deformation,
Elasticity drum body 303 is in axial direction shunk under suction function, and since the negative pressure sensing interface 33 of left end is fixed, switch is matched
Conjunction face 32 is moved towards negative pressure sensing interface 3, when the negative pressure value of vacuum degree induction cavity 31 reaches setting value, switchs mating surface 32
Elastic contact blade 341 is detached from, vacuum pump 2 is controlled to be stopped by control circuit.
Example IV
A kind of vacuum sealer for improving negative pressure sensing device, shown in Fig. 8 and 9, the primary structure of the present embodiment and implementation
Example one is identical, and which is not described herein again, the difference is that, negative pressure sensing main body 3 includes a fixed cylinder 304 and an end cap
306, the one end of fixed cylinder 304 is provided with negative pressure sensing interface 33, the other end is fixed with end cap 306, the end of end cap 306
Face is provided with an elastic surface, fixed cylinder 304 and the sealing cooperation of end cap 306, what fixed cylinder 304 and the closing of end cap 306 were formed
Inner cavity is provided at least one elastic concave ring 307, bulge loop or concave-convex ring as vacuum degree induction cavity 31, the surrounding outer rim of elastic surface,
Elastic surface is provided with spring 301 as mating surface 32 is switched in vacuum degree induction cavity 31, the one end of spring 301 is resisted against admittedly
End face, the other end of safety barrel body 304 are resisted against elastic surface.Matched by elastic concave ring 307 (bulge loop or concave-convex ring) regulating switch
The deflection in conjunction face 32 (elastic surface) and the proportionate relationship of vacuum magnitude, in suction function lower switch mating surface 32 towards fixed cylinder
304 side Inward deflection of body, when the negative pressure value of vacuum degree induction cavity 31 reaches setting value, switch mating surface 32 is detached from elasticity and touches
Piece 341, controls vacuum pump 2 to be stopped by control circuit, and mating surface 32 is switched after negative pressure is released and is resetted, switchs mating surface
32 support shake-up elastic contact blade 341 again, are returned to original state.
Embodiment five
A kind of vacuum sealer for improving negative pressure sensing device, shown in Figure 10 and 11, the primary structure and reality of the present embodiment
Apply that example one is identical, and which is not described herein again, the difference is that, negative pressure sensing main body 3 includes a fixed cylinder 304 and portable pillar
Body 308, the outer end of fixed cylinder 304 are provided with negative pressure sensing interface 33, and the outer end of movable cylinder 305 is provided with switch and matches
Conjunction face 32, the inner end activity of movable cylinder 308 are inserted in the inner cavity of fixed cylinder 304, the inner cavity of fixed cylinder 304 and work
Cooperation is sealed between dynamic cylinder 308, the inner cavity of formation is closed as vacuum degree sense between fixed cylinder 304 and movable cylinder 308
Answer chamber 31, be provided with spring 301 in vacuum degree induction cavity 31, the one end of spring 301 be resisted against the end face of fixed cylinder 304,
The other end is resisted against the inner face of movable cylinder 308.Displacement and vacuum magnitude by 301 adjusting activity cylinder 308 of spring
Proportionate relationship, movable cylinder 308 is in axial direction moved towards 304 side of fixed cylinder under suction function, and portable pillar
The displacement of body 308 is directly proportional to the vacuum magnitude of vacuum degree induction cavity 31, and movable cylinder 308 is in axial direction after negative pressure elimination
It returns and resets.
Embodiment six
A kind of vacuum sealer for improving negative pressure sensing device, shown in Figure 12, the primary structure and embodiment of the present embodiment
One is identical, and which is not described herein again, the difference is that, negative pressure sensing main body 3 includes a fixed cylinder 304 and movable cylinder
305, the outer end of fixed cylinder 304 is provided with negative pressure sensing interface 33, and the outer end of movable cylinder 305 is provided with switch cooperation
Face 32, the inner end of movable cylinder 305 are movably set in the inner end of fixed cylinder 304, fixed cylinder 304 and movable cylinder
Cooperation is sealed between 305, the inner cavity of formation is closed between fixed cylinder 304 and movable cylinder 305 as vacuum degree induction cavity 31,
Spring 301 is provided in vacuum degree induction cavity 31, the one end of spring 301 is resisted against the end face of fixed cylinder 304, the other end
It is resisted against the end face of movable cylinder 305, by the displacement of 301 adjusting activity cylinder 305 of spring and the proportionate relationship of vacuum magnitude,
Movable cylinder 305 is in axial direction moved towards 304 side of fixed cylinder under suction function, and the displacement of movable cylinder 305
Directly proportional to the vacuum magnitude of vacuum degree induction cavity 31, movable cylinder 305 in axial direction returns to reset after negative pressure elimination.
More than content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With novel thought, there will be changes, the content of the present specification should not be construed as in specific embodiments and applications
Limitation to the utility model.
Claims (10)
1. a kind of vacuum sealer for improving negative pressure sensing device, including housing (1) and control circuit, housing (1) is equipped with very
Sky pumps (2) and vacuumizes chamber, and vacuum pump (2) vacuumizes chamber by vacuum lead (20) connection, it is characterised in that：Also wrap
Negative pressure sensing main body (3) and at least one is included for controlling the inductive switch (34) of the power supply of vacuum pump (2),
Negative pressure sensing main body (3) and inductive switch (34) are individually fixed in housing (1), and inductive switch (34) connects control circuit,
Inductive switch (34) is arranged on the side of negative pressure sensing main body (3),
Negative pressure sensing main body (3) inside setting vacuum degree induction cavity (31), negative pressure sensing main body (3) the first side be provided with it is negative
Pressure sensitivity answers interface (33), the first end connection vacuum degree induction cavity (31) of negative pressure sensing interface (33), negative pressure sensing interface (33)
Second end connection vacuum lead (20) or vacuumize chamber,
The second side of negative pressure sensing main body (3) has a switch mating surface (32), and switch mating surface (32) is with vacuum lead
(20) vacuum degree changes and generates corresponding displacement, and switch mating surface (32) coordinates with inductive switch (34) triggering.
2. a kind of vacuum sealer for improving negative pressure sensing device according to claim 1, it is characterised in that：The vacuum
The variation tendency of the volume of degree induction cavity (31) is gradually tapered up with the gradual increase of the negative pressure value of vacuum lead (20)
Become smaller；
The process to become smaller is gradually tapered up in the volume of vacuum degree induction cavity (31), the switch mating surface (32) is increasingly towards relatively
The side deformation or mobile of inductive switch (34)；
Negative pressure sensing interface (33) is fixed on housing, in suction function lower switch mating surface (32) negative relative sensing interface (33)
Displacement；
Inductive switch (34) is with the vacuum pump (2) electrical series in control circuit.
3. a kind of vacuum sealer for improving negative pressure sensing device according to claim 1, it is characterised in that：The sensing
It switching (34) and selects mechanical touch switch, mechanical touch switch have elastic contact blade (341) and contact,
In the initial state, switch mating surface (32) compresses elastic contact blade (341), and elastic contact blade (341) touches contact, and sensing is opened
It is in the conduction state to close (34)；
After the vacuum degree of vacuum lead (20) reaches setting value, switch mating surface (32) is opposite towards elastic contact blade (341)
Direction distortion or be moved to setting position, switch mating surface (32) is detached from elastic contact blade (341), and elastic contact blade (341) do not touch
Movable contact, inductive switch (34) are off.
4. a kind of vacuum sealer for improving negative pressure sensing device according to claim 3, it is characterised in that：The vacuum
Spring (301) is provided in degree induction cavity (31), spring (301) one end is resisted against switch mating surface (32), the other end is resisted against
It is located at the wall surface of switch mating surface (32) opposite side in vacuum degree induction cavity (31).
5. a kind of vacuum sealer of improvement negative pressure sensing device according to one of Claims 1-4, it is characterised in that：
The negative pressure sensing main body (3) includes an extension airbag, if extension airbag is provided with dry elasticity gauffer (302) along its length,
The inner cavity of extension airbag is provided with the negative pressure sensing and connects as the vacuum degree induction cavity (31), the first end face of extension airbag
Mouth (33), second end face are provided with the switch mating surface (32), and extension airbag is stretched, opened along its length under suction function
Close mating surface (32) displacement along its length.
6. a kind of vacuum sealer of improvement negative pressure sensing device according to one of Claims 1-4, it is characterised in that：
The negative pressure sensing main body (3) includes an elasticity drum body (303), and the inner cavity of elasticity drum body (303) senses as the vacuum degree
Chamber (31), the wherein end face of elasticity drum body (303) are provided with the negative pressure sensing interface (33), the side of elasticity drum body (303)
Face sets flexible eardrum, and elastic eardrum is as the switch mating surface (32), and elastic eardrum is radially square under suction function
Concave deformation or evagination deformation.
7. a kind of vacuum sealer of improvement negative pressure sensing device according to one of Claims 1-4, it is characterised in that：
The negative pressure sensing main body (3) includes an elasticity drum body (303), and the inner cavity of elasticity drum body (303) senses as the vacuum degree
Chamber (31), the wherein end face of elasticity drum body (303) are provided with the negative pressure sensing interface (33), and elasticity rouses the another of body (303)
End face sets flexible eardrum, and elastic eardrum is as the switch mating surface (32), in suction function lower switch mating surface
(32) in axial direction displacement, Inward deflection or evagination deformation.
8. a kind of vacuum sealer of improvement negative pressure sensing device according to one of Claims 1-4, it is characterised in that：
The pressure sensitivity answers main body to include a fixed cylinder (304) and movable cylinder (305), and the outer end of fixed cylinder (304) is provided with
The negative pressure sensing interface (33), the outer end of movable cylinder (305) are provided with the switch mating surface (32), movable cylinder
(305) inner end is movably set in the inner end of fixed cylinder (304), between fixed cylinder (304) and movable cylinder (305)
Sealing cooperation, fixed cylinder (304) and movable cylinder (305) close the inner cavity of formation as the vacuum degree induction cavity (31),
Be provided with spring (301) in vacuum degree induction cavity (31), the one end of spring (301) be resisted against the end face of fixed cylinder (304),
The other end is resisted against the end face of movable cylinder (305).
9. a kind of vacuum sealer of improvement negative pressure sensing device according to one of Claims 1-4, it is characterised in that：
The pressure sensitivity answers main body to include a fixed cylinder (304) and an end cap (306), and the one end setting of fixed cylinder (304) is
State negative pressure sensing interface (33), the other end be fixed with the end cap (306), the end face of end cap (306) is provided with an elastic surface,
The inner cavity that fixed cylinder (304) and end cap (306) sealing cooperation, fixed cylinder (304) and end cap (306) closing are formed is as institute
Vacuum degree induction cavity (31) is stated, the surrounding outer rim of elastic surface is provided at least one elastic concave ring (307), bulge loop or concave-convex ring, bullet
Property face as the switch mating surface (32), be provided with spring (301), one end of spring (301) in vacuum degree induction cavity (31)
Portion is resisted against the end face of fixed cylinder (304), the other end is resisted against elastic surface.
10. a kind of vacuum sealer of improvement negative pressure sensing device according to one of Claims 1-4, it is characterised in that：
The pressure sensitivity answers main body to include a fixed cylinder (304) and movable cylinder (308), and the outer end of fixed cylinder (304) is provided with
The negative pressure sensing interface (33), the outer end of movable cylinder (305) are provided with the switch mating surface (32), movable cylinder
(308) inner end activity is inserted in the inner cavity of fixed cylinder (304), the inner cavity of fixed cylinder (304) and movable cylinder
(308) cooperation is sealed between, the inner cavity of formation is closed as the vacuum between fixed cylinder (304) and movable cylinder (308)
Induction cavity (31) is spent, is provided with spring (301) in vacuum degree induction cavity (31), the one end of spring (301) is resisted against fixed cylinder
End face, the other end of body (304) are resisted against the inner face of movable cylinder (308).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721170283.XU CN207482265U (en) | 2017-09-13 | 2017-09-13 | A kind of vacuum sealer for improving negative pressure sensing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721170283.XU CN207482265U (en) | 2017-09-13 | 2017-09-13 | A kind of vacuum sealer for improving negative pressure sensing device |
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| CN207482265U true CN207482265U (en) | 2018-06-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107521749A (en) * | 2017-09-13 | 2017-12-29 | 东莞市微然机电科技有限公司 | A kind of vacuum sealer for improving negative pressure induction installation |
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2017
- 2017-09-13 CN CN201721170283.XU patent/CN207482265U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107521749A (en) * | 2017-09-13 | 2017-12-29 | 东莞市微然机电科技有限公司 | A kind of vacuum sealer for improving negative pressure induction installation |
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