CN103151223A - Adjustable-pressure microswitch - Google Patents
Adjustable-pressure microswitch Download PDFInfo
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- CN103151223A CN103151223A CN201310101941XA CN201310101941A CN103151223A CN 103151223 A CN103151223 A CN 103151223A CN 201310101941X A CN201310101941X A CN 201310101941XA CN 201310101941 A CN201310101941 A CN 201310101941A CN 103151223 A CN103151223 A CN 103151223A
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Abstract
The invention discloses an adjustable-pressure microswitch. The adjustable-pressure microswitch comprises a trigger component, an electrical component and a knob component, wherein the trigger component is controlled by medium pressure, the electrical component carries out opening and closing through being triggered by the trigger component and is in control connection with a pump, the knob component is mounted on the electrical component and is used for adjusting an opening/closing distance for the electrical component triggered by the trigger component, and then, the pressure value of the adjustable-pressure microswitch is adjusted. According to the adjustable-pressure microswitch, a push rod is driven to rotate in a manner that an adjusting knob is rotated by an adjusting handle, so that the distance from a push plate on the push rod to a moving contact piece is adjusted, and then, the off pressure value of the adjustable-pressure microswitch disclosed by the invention is adjusted. Furthermore, the adjusting handle can be pulled upwardly, a push rod is driven to move upwardly through the adjusting knob, and the moving contact piece is pulled up by the push rod, so that a moving contact of the moving contact piece is separated from a stationary contact of a stationary contact piece, and a normally-open state is formed; and otherwise, the adjusting handle is downwardly pressed, so that the moving contact of the moving contact piece and the stationary contact of the stationary contact piece can be enabled to be in contact again, and a normally-closed state is formed.
Description
Technical field
The present invention relates to the pressure regulating switch technical field, relate in particular to a kind of adjustable pressure microswitch.
Background technology
Be usually used in controlling pneumatic and pressure control switch water loop pressure have a lot of in, as using the pressure-regulating device in air compressor machine, in order to detect the gas pressure in gas receiver, during the gas pressure that pressurizes greater than pumping when the gas pressure in gas receiver, pressure-regulating device forces motor to shut down, pumping stops gas pressurized being sent into gas receiver, and the gas that makes backflow does not directly impact the pumping in running, and coordinates relief valve to reduce the gas pressure in gas receiver.
another Chinese patent 200520130399.1 discloses a kind of " pressure-regulating device of air compressor machine ", it has body, what body had that air reservoir with air compressor machine joins first takes over, and have and second taking over that air reservoir and pumping are joined, switch module is located at pressing in chamber and having permanent joint and elastomeric joint of body, permanent joint has contact, elastomeric joint has relative elastic conducting strip, elastic conducting strip and trace interfix and elastic conducting strip is arranged in and presses chamber, trace runs through the connection chamber and extends in the pressure release chamber, the opening of trace endcapped pressure release chamber, when the gas pressure of air reservoir is excessive, promoting the elastic conducting strip distortion makes elastic conducting strip separate to form with contact with the ejection driving lever to open circuit, pumping shuts down, the gas pressure that is refluxed with the pumping in avoiding turning round and damaging, drive simultaneously trace and move that the opening of pressure release chamber is opened, gas flows to reduce internal pressure by opening, and reach the pressure release effect, setting due to its structure, cause own vol larger, thereby its cost is higher.
Also have in conventional art, the pressure regulating mechanism more complicated of pressure rearrangeable switch, operating is not very convenient.
in order to solve the problems of the technologies described above, China Patent No. 200820055424.8 discloses a kind of novel pressure tunable switch apparatus, comprise pedestal and be compound in the vapour cup of pedestal bottom, pedestal and vapour cup define a chamber, top in pedestal is provided with a pressure regulation screwed hole, and the bottom is provided with shoulder hole, be provided with a working media entrance hole on the vapour cup, shoulder hole and a middle push rod guide bracket and the seal membrane of being provided with of vapour cup internal upper part at pedestal, seal membrane is positioned at the bottom of push rod guide bracket, push rod guide bracket and seal membrane are separated into the downforce chamber and the gas chamber that powers on chamber, have a push-rod hole in the middle of the push rod guide bracket, push-rod hole is laid a stairstepping push rod that extends upwardly into the gas chamber that powers on, be rotary with a screw press in the pressure regulation screwed hole, be provided with a pressure spring between screw press and stairstepping push rod upper end, be provided with in pedestal bottom one side fixed contact inserted sheet and the moving contact inserted sheet that ecto-entad inserts the gas chamber that powers on, moving, outside the fixed contact inserted sheet is positioned at pedestal, an end is welded with wire, be positioned at the fixed contact inserted sheet on an end of the gas chamber that powers on and be provided with fixed contact, an end that is positioned at the gas chamber that powers at the moving contact inserted sheet has the hole that a multidiameter that holds stairstepping push rod upper end passes and is fixed on the both sides, hole and to nose bar and the moving contact of downward-extension, on the multidiameter of stairstepping push rod upper end also cover have with the moving contact inserted sheet on the transition contacts conducting strip of nose bar conductive contact, be provided with on the transition contacts conducting strip with the fixed contact inserted sheet on fixed contact contact the transition contacts of conduction with moving contact on the moving contact inserted sheet.
But above-mentioned patent structure is still aobvious complicated, and cost is also higher, and the pressure tunable switch apparatus of this patent can't be realized the normal off operating state simultaneously.
Summary of the invention
Technical problem to be solved by this invention is to provide for the existing many technical problems of prior art that a kind of structure is compacter, cost is lower, can also realize the adjustable pressure microswitch of normal off operating state simultaneously.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
The adjustable pressure microswitch comprises:
The one shake-up parts that controlled by pressure medium;
One is touched parts touches the electric component of opening and closing, described electric component and described pumping control connection;
One knob parts, described knob parts are arranged on described electric component, touch the distance of opening and closing of described electric component in order to regulate described shake-up parts, and then the force value of regulating described adjustable pressure microswitch.
In a preferred embodiment of the invention, described shake-up parts comprise:
One chews with tank connected the connecing of gas storage, described connect to chew have a medium inlet port;
The pedestal that is connected is chewed with described connecing in one bottom, and the inside of described pedestal and the described common chamber that forms in the inside of chewing that connects are provided with first through hole that connects with described cavity at the top of described pedestal;
The piston of slide arrangement in described cavity, described piston is separated into upper spring chamber and downforce chamber with described chamber, and described downforce chamber and the described medium inlet port of chewing that connects connect; Be provided with a hollow push rod that extends up through described upper spring chamber and passed by described the first through hole at the top of described piston, have inner bolt hole in described hollow push rod;
One is enclosed within the back-moving spring on described hollow push rod, and the bottom of described back-moving spring contacts with the bottom surface of described piston, and the top of back-moving spring contacts with the end face of described chamber;
Described electric component comprises:
The one electric housing that is connected with the top of pedestal has an electric installation room in described electric housing, be fixed with a pair of lug plate on described electric housing, and the inner of a pair of lug plate extends in described electric installation room, and the outer end extends to outside described electric housing; The bottom of described electric housing has second through hole that is communicated with described the first through hole, and the top of described hollow push rod is passed the second through hole and entered in electric installation room; Be provided with a column casing that extends upward and be connected as a single entity with electric housing at the top of described electric housing, have a third through-hole coaxial with the second through hole in column casing, third through-hole connects in downward-extension and described electric installation room, is arranged at intervals with some annular ditch grooves on the outer surface of described column casing; One static contact is installed at the bottom of the chamber of described electric installation room, fixed contact is set on static contact, be provided with a moving contact bearing in described electric installation room, be provided with movable contact spring on described moving contact bearing, be provided with moving contact on movable contact spring, without under External Force Acting, described moving contact and fixed contact electrically contact; Movable contact spring is connected with static contact with a pair of lug plate conduction and is connected;
One is arranged on the push rod in described electric housing, the lower end of described push rod is inserted in the inner bolt hole of described hollow push rod and is threaded with described inner bolt hole, the upper end of described push rod is that non-cylindrical configuration is passed described movable contact spring and the moving contact bearing is inserted in described third through-hole, be provided with a push pedal in the centre position of described push rod, can promote described movable contact spring in described push pedal uphill process;
Described knob parts comprise:
One adjusting knob post, the lower end of described adjusting knob post are inserted in described third through-hole, are provided with a non-circular hole in the lower central of described adjusting knob post, and the non-cylindrical configuration of described push rod upper end is inserted in described non-circular hole;
One adjusting knob, the middle and lower part of described adjusting knob has snap fit and an outer snap fit of circle in a circle, wherein in the annular ditch groove of interior snap fit hook on the column casing of electric housing, adjusting knob is connected with the column casing of described electric housing, described adjusting knob post is connected with described adjusting knob;
One regulating handle, described regulating handle is connected with the top of described adjusting knob.
In a preferred embodiment of the invention, cover has a dust cover on described adjusting knob, and described dust cover also is connected with described regulating handle.
In a preferred embodiment of the invention, top at described electric housing also offers a tie rod hole, pass a pull bar in described tie rod hole, the lower end of described pull bar extends in described electric installation room and catches on described movable contact spring, and the upper end of this pull bar hooks on the outer snap fit of described adjusting knob.
Owing to having adopted technical scheme as above, characteristics of the present invention are: rotate adjusting knob by regulating handle, and the adjusting knob that rotates drives the rotation of adjusting knob post, the moving push rod of the adjusting knob cornice that rotates rotates, thereby the distance between the push pedal on regulating pushing rod and movable contact spring, and then regulate adjustable pressure microswitch pressure OFF value of the present invention, when the distance between push pedal and movable contact spring diminishes, pressure OFF value diminishes, when otherwise the distance between push pedal and movable contact spring became large, it is large that pressure OFF value becomes.Regulating handle in addition can also make progress, driving pull bar by adjusting knob moves upward, pull bar is with the movable contact spring pull-up, moving contact on movable contact spring is separated with fixed contact on static contact, become normal off and open state, otherwise press down regulating handle, the moving contact on movable contact spring is contacted with fixed contact on static contact, become normally off, so the existence of the pull bar function that makes adjustable pressure microswitch of the present invention have out and close.
Structure of the present invention is preferred, low cost of manufacture.
Description of drawings
Fig. 1 is the normally closed "on" position schematic diagram of the adjustable pressure microswitch of the embodiment of the present invention 1.
Fig. 2 is the adjustable pressure microswitch ventilation off-position schematic diagram of the embodiment of the present invention 1.
Fig. 3 is the adjustable pressure microswitch structural representation of the embodiment of the present invention 2.
Embodiment
Further describe the present invention below in conjunction with specification drawings and specific embodiments.
Embodiment 1
Referring to Fig. 1 and Fig. 2, the adjustable pressure microswitch that provides in figure comprises that one connects and chews 100, pedestals 200, an electric housing 300, an adjusting knob post 400, an adjusting knob 500, a regulating handle 600 and a dust cover 700.
Connecing and chew 100 and have a medium inlet port 110, to pass into medium for example gas or liquid, for the present embodiment, is to pass into air.
In the interior slide arrangement of cavity 800, one piston 210 is arranged, this piston 210 is separated into upper spring chamber 810 and downforce chamber 820 with chamber 800, and downforce chamber 820 is chewed 100 medium inlet port 110 and connected with connecing.Be provided with one extends up through upper spring chamber 810 and by the hollow push rod 221 that through hole 220 passes, has inner bolt hole 221a in hollow push rod 221 at the top of piston 210;
Cover has a back-moving spring 230 on hollow push rod 211, and the bottom of back-moving spring 230 contacts with the bottom surface of piston 210, and the top contacts with the end face of chamber 800.
Have a through hole 340 that is communicated with through hole 220 in the bottom of electric housing 300, the top of hollow push rod 221 is passed through hole 340 and is entered in electric installation room 310.Be provided with in addition a column casing 350 that extends upward and be connected as a single entity with electric housing 300 at the top of electric housing 300, have a through hole 351 coaxial with through hole 340 in column casing 350, through hole 351 is to downward-extension and the interior perforation of electric installation room 310, on the outer surface of column casing 350, be arranged at intervals with twice annular ditch groove 352,353 up and down.Certainly also be not limited to twice, can be three roads or four roads.
One static contact 360 is installed at the bottom of the chamber of electric installation room 310, fixed contact 361 is set on static contact 360, be provided with a moving contact bearing 370 in electric installation room 310, be provided with movable contact spring 380 on moving contact bearing 370, be provided with moving contact 381 on movable contact spring 380, without under External Force Acting, moving contact 381 electrically contacts with fixed contact 361.Movable contact spring 380 is electrically connected to lug plate 320, and static contact 360 is electrically connected to lug plate 330.
The push rod 240 that promotes movable contact spring 380 actions is positioned at electric housing, and its lower end is inserted in the inner bolt hole 221a of hollow push rod 221 and is threaded with inner bolt hole 221a; The upper end be non-cylindrical configuration for example for square, pass movable contact spring 380 and moving contact bearing 370 and be inserted in through hole 351.Be provided with a push pedal that is connected as a single entity with it 250 in the centre position of push rod 240, can promote movable contact spring 380 in push pedal 250 uphill process.
The lower end of adjusting knob post 400 is inserted in through hole 351, lower central at adjusting knob post 400 is provided with for example square hole of a non-circular hole 410, this non-circular hole 410 is complementary with the non-cylindrical configuration of push rod 240 upper ends, the non-cylindrical configuration of push rod 240 upper ends is inserted in described non-circular hole, rotation adjusting knob post 400 can drive push rod 240 rotations like this, thereby comes push pedal 250 and movable contact spring 380 distance before on regulating pushing rod 240.
For the convenient adjusting knob post 400 of regulating, one adjusting knob 500 is installed in the upper end of adjusting knob post 400, and a regulating handle 600 is installed on adjusting knob, rotates regulating handle 600 and can drive 400 rotations of adjusting knob post by adjusting knob 500.Snap fit 520 outside snap fit 510 and a circle in the middle and lower part of adjusting knob 500 is provided with a circle, in the annular ditch groove 352 that wherein interior snap fit 510 hooks on the column casing 350 of electric housing 300, adjusting knob 500 is connected with the column casing 350 of electric housing 300.
The present embodiment can also overlap on adjusting knob 500 dust cover 700, and dust cover 700 also is connected with regulating handle 600.
The adjustable pressure microswitch operation principle of the present embodiment is as follows: when pressure chamber 820 does not have pressure instantly, piston 210 moves downward in a state of nature under back-moving spring 230 effects, hollow push rod 221 on piston 210 drives push rod 240 and moves downward in a state of nature, at this moment the moving contact 381 on movable contact spring 380 contacts with fixed contact 361 on static contact 360, and whole adjustable pressure microswitch is in normally off.pumping work, inflate in air accumulator, simultaneously compressed air is chewed 100 medium inlet port 110 and is entered in downforce chamber 820 by connecing, when the pressure in air accumulator reaches the rated pressure value, along with the increased pressure in downforce chamber 820, after the pressure that increases surpasses the initial pressure value of back-moving spring 230, pushing piston 210 moves upward, piston 210 drives push rod 240 by hollow push rod 221 and moves upward, push pedal 250 on push rod 240 moves upward movable contact spring 380, moving contact 381 on movable contact spring 380 is separated with fixed contact 361 on static contact 360, whole adjustable pressure microswitch is in off-state, pumping quits work.While back-moving spring 230 compress energy storage.When the pressure in air accumulator continues to reduce, along with the pressure drop in downforce chamber 820, when the pressure in pressure chamber 820 is lower than the initial pressure value of back-moving spring 230 instantly, back-moving spring 230 pushing pistons 210 move downward, hollow push rod 221 drive push rods 240 on piston 210 move downward gets back to reset condition, at this moment the moving contact 381 on movable contact spring 380 contacts with fixed contact 361 on static contact 360, and whole adjustable pressure microswitch is in normally off.Pumping work is inflated in air accumulator.
The adjustable pressure microswitch pressure OFF control method of the present embodiment is as follows: rotate regulating handle 600 and can drive 400 rotations of adjusting knob post by adjusting knob 500, the rotation of adjusting knob post 400 can drive push rod 240 and rotate, thereby come push pedal 250 and movable contact spring 380 distance before on regulating pushing rod 240, and then regulate adjustable pressure microswitch pressure OFF value, when the distance between push pedal and movable contact spring diminishes, pressure OFF value diminishes, when otherwise the distance between push pedal and movable contact spring became large, it is large that pressure OFF value becomes.As: OFF:8bar, ON:6bar, as a rule, the pressure differential resetting of the adjustable pressure microswitch of the present embodiment is 2bar, the user can adjust to arbitrary value with the OFF force value between OFF:8bar to 2.1bar, as 7.9bar, 7.8bar, 5bar, 4bar, the ON force value is moved with the adjustment of OFF force value, is respectively 5.9bar, 5.8bar, 3bar, 2.1bar.
Embodiment 2
Referring to Fig. 3, the adjustable pressure microswitch structure that provides in figure is basically basic identical with embodiment 1 adjustable pressure microswitch structure, just increase a pull bar 900, and also offer a tie rod hole 390 at the top at electric housing 300, pull bar 900 passes tie rod hole 390, its lower end extends in electric installation room 310 and catches on movable contact spring 380, and the upper end hooks on the outer snap fit 530 of adjusting knob 500.After replenishing this structure, can make the adjustable pressure microswitch have ON, OFF function.Concrete grammar is: upwards promoting or transferring saves handle 600, driving pull bar 900 by the outer snap fit 530 on adjusting knob 500 moves upward, and the pull bar 900 that moves upward is with movable contact spring 380 pull-ups, moving contact 381 on movable contact spring 380 is separated with fixed contact 361 on static contact 360, thereby make the adjustable pressure microswitch become normal off and open state, namely have the OFF function.At this moment the interior snap fit 520 on adjusting knob 500 moves upward along the column casing 350 of electric housing 300, hooks in the annular ditch groove 353 on column casing 350.If press down regulating handle 600, driving pull bar 900 by the outer snap fit 530 on adjusting knob 500 moves downward, and the pull bar 900 that moves downward is thrown off pull-up with movable contact spring 380, movable contact spring 380 resets, moving contact 381 on movable contact spring 380 is contacted again with fixed contact 361 on static contact 360, thereby make the adjustable pressure microswitch get back to normally off, namely have the ON function.At this moment the interior snap fit 520 on adjusting knob 500 moves downward along the column casing 350 of electric housing 300, again hooks in the annular ditch groove 352 on column casing 350.
The adjustable pressure microswitch of the present embodiment also has the adjustable pressure microswitch all functions of embodiment 1 except having ON, OFF function.
Claims (4)
1. adjustable pressure microswitch comprises:
The one shake-up parts that controlled by pressure medium;
One is touched parts touches the electric component of opening and closing, described electric component and described pumping control connection;
One knob parts, described knob parts are arranged on described electric component, touch the distance of opening and closing of described electric component in order to regulate described shake-up parts, and then the force value of regulating described adjustable pressure microswitch.
2. adjustable pressure microswitch as claimed in claim 1, is characterized in that, described shake-up parts comprise:
One chews with tank connected the connecing of gas storage, described connect to chew have a medium inlet port;
The pedestal that is connected is chewed with described connecing in one bottom, and the inside of described pedestal and the described common chamber that forms in the inside of chewing that connects are provided with first through hole that connects with described cavity at the top of described pedestal;
The piston of slide arrangement in described cavity, described piston is separated into upper spring chamber and downforce chamber with described chamber, and described downforce chamber and the described medium inlet port of chewing that connects connect; Be provided with a hollow push rod that extends up through described upper spring chamber and passed by described the first through hole at the top of described piston, have inner bolt hole in described hollow push rod;
One is enclosed within the back-moving spring on described hollow push rod, and the bottom of described back-moving spring contacts with the bottom surface of described piston, and the top of back-moving spring contacts with the end face of described chamber;
Described electric component comprises:
The one electric housing that is connected with the top of pedestal has an electric installation room in described electric housing, be fixed with a pair of lug plate on described electric housing, and the inner of a pair of lug plate extends in described electric installation room, and the outer end extends to outside described electric housing; The bottom of described electric housing has second through hole that is communicated with described the first through hole, and the top of described hollow push rod is passed the second through hole and entered in electric installation room; Be provided with a column casing that extends upward and be connected as a single entity with electric housing at the top of described electric housing, have a third through-hole coaxial with the second through hole in column casing, third through-hole connects in downward-extension and described electric installation room, is arranged at intervals with some annular ditch grooves on the outer surface of described column casing; One static contact is installed at the bottom of the chamber of described electric installation room, fixed contact is set on static contact, be provided with a moving contact bearing in described electric installation room, be provided with movable contact spring on described moving contact bearing, be provided with moving contact on movable contact spring, without under External Force Acting, described moving contact and fixed contact electrically contact; Movable contact spring is connected with static contact with a pair of lug plate conduction and is connected;
One is arranged on the push rod in described electric housing, the lower end of described push rod is inserted in the inner bolt hole of described hollow push rod and is threaded with described inner bolt hole, the upper end of described push rod is that non-cylindrical configuration is passed described movable contact spring and the moving contact bearing is inserted in described third through-hole, be provided with a push pedal in the centre position of described push rod, can promote described movable contact spring in described push pedal uphill process;
Described knob parts comprise:
One adjusting knob post, the lower end of described adjusting knob post are inserted in described third through-hole, are provided with a non-circular hole in the lower central of described adjusting knob post, and the non-cylindrical configuration of described push rod upper end is inserted in described non-circular hole;
One adjusting knob, the middle and lower part of described adjusting knob has snap fit and an outer snap fit of circle in a circle, wherein in the annular ditch groove of interior snap fit hook on the column casing of electric housing, adjusting knob is connected with the column casing of described electric housing, described adjusting knob post is connected with described adjusting knob;
One regulating handle, described regulating handle is connected with the top of described adjusting knob.
3. adjustable pressure microswitch as claimed in claim 2, is characterized in that, cover has a dust cover on described adjusting knob, and described dust cover also is connected with described regulating handle.
4. adjustable pressure microswitch as claimed in claim 2 or claim 3, it is characterized in that, top at described electric housing also offers a tie rod hole, pass a pull bar in described tie rod hole, the lower end of described pull bar extends in described electric installation room and catches on described movable contact spring, and the upper end of this pull bar hooks on the outer snap fit of described adjusting knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101941.XA CN103151223B (en) | 2013-03-27 | 2013-03-27 | Adjustable-pressure microswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101941.XA CN103151223B (en) | 2013-03-27 | 2013-03-27 | Adjustable-pressure microswitch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103151223A true CN103151223A (en) | 2013-06-12 |
| CN103151223B CN103151223B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310101941.XA Active CN103151223B (en) | 2013-03-27 | 2013-03-27 | Adjustable-pressure microswitch |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183044A (en) * | 2016-12-08 | 2018-06-19 | 致伸科技股份有限公司 | Can adjustment strength level input unit |
| CN110735783A (en) * | 2019-08-28 | 2020-01-31 | 鹤壁职业技术学院 | switch with air release function |
| CN111446121A (en) * | 2020-05-07 | 2020-07-24 | 台州德基水泵科技有限公司 | Adjustable pressure switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212255A2 (en) * | 1985-08-16 | 1987-03-04 | Ranco Incorporated Of Delaware | Pressure control device |
| CN2447929Y (en) * | 2000-09-27 | 2001-09-12 | 钦瑞工业股份有限公司 | Pressure switch |
| CN101989512A (en) * | 2009-08-03 | 2011-03-23 | Smc株式会社 | Pressure switch |
| CN203150472U (en) * | 2013-03-27 | 2013-08-21 | 詹奇峰 | Adjustable pressure microswitch |
-
2013
- 2013-03-27 CN CN201310101941.XA patent/CN103151223B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212255A2 (en) * | 1985-08-16 | 1987-03-04 | Ranco Incorporated Of Delaware | Pressure control device |
| CN2447929Y (en) * | 2000-09-27 | 2001-09-12 | 钦瑞工业股份有限公司 | Pressure switch |
| CN101989512A (en) * | 2009-08-03 | 2011-03-23 | Smc株式会社 | Pressure switch |
| CN203150472U (en) * | 2013-03-27 | 2013-08-21 | 詹奇峰 | Adjustable pressure microswitch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183044A (en) * | 2016-12-08 | 2018-06-19 | 致伸科技股份有限公司 | Can adjustment strength level input unit |
| CN110735783A (en) * | 2019-08-28 | 2020-01-31 | 鹤壁职业技术学院 | switch with air release function |
| CN111446121A (en) * | 2020-05-07 | 2020-07-24 | 台州德基水泵科技有限公司 | Adjustable pressure switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103151223B (en) | 2015-04-22 |
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