CN219321250U - Air-tight pneumatic switch - Google Patents
Air-tight pneumatic switch Download PDFInfo
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- CN219321250U CN219321250U CN202320244529.2U CN202320244529U CN219321250U CN 219321250 U CN219321250 U CN 219321250U CN 202320244529 U CN202320244529 U CN 202320244529U CN 219321250 U CN219321250 U CN 219321250U
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Abstract
The utility model discloses an airtight pneumatic switch, which comprises a switch integral part and a shell for covering part of the switch integral part, wherein the switch integral part comprises a pneumatic component, a push rod component and two groups of combined contacts with the same specification, the push rod component is arranged on the pneumatic component, the pneumatic component comprises a base with a through hole in the axis, a concave is arranged in the middle of one end of the base, a movable corrugated body, an adjusting screw plug, a second sealing gasket and a screw plug are sequentially arranged on the inner bottom surface of the concave from inside to outside, the push rod component comprises a push rod, a first supporting plate arranged at one end of the push rod, a first movable contact component and a second movable contact component which are symmetrical at one end of the push rod and have the same specification by taking the axis of the push rod as a base line, the first movable contact component comprises a third insulating sleeve and a fourth insulating sleeve which are nested and spliced through a first rivet, and a first movable contact close to the fourth insulating sleeve is arranged on the first rivet. The switch has long service life, high temperature resistance, convenient assembly and debugging, small volume, portability and good circuit connection performance.
Description
Technical Field
The utility model relates to a switch with an airtight structure for realizing an airtight function and a switch contact action, in particular to an airtight pneumatic switch.
Background
A mechanical travel switch refers to a device that causes one or more electrical circuits to be turned on or off with travel control. The general travel switch provides mechanical pressure/travel as input under the premise of external mechanical pressure, so as to promote the motion contact to generate displacement and realize circuit conversion. Because the travel switch depends on mechanical action, only waterproof level is provided on the tightness, and the airtight level can be rarely achieved; there are few transfer switches using high pressure gas as a power source. Because the sealing of the waterproof travel switch mainly depends on the rubber sealing ring, the sealing grade is low, and the dynamic sealing grade is lower. Because the rubber sealing ring acts together with the switch button, the rebound reaction force of the travel switch is large, the rebound is slow, the conversion is lagged, and the control precision and the signal feedback speed of model equipment are affected. Under the working environment of high-pressure gas, the mechanical action pressure is very difficult to provide for the non-sealing mechanical travel switch, and the usability is poor.
Disclosure of Invention
The utility model aims at overcoming the defects in the prior art and provides an airtight pneumatic switch. The switch has long service life, high temperature resistance, convenient assembly and debugging, small volume, light weight and good circuit connection performance.
The technical scheme for realizing the aim of the utility model is as follows:
an airtight pneumatic switch comprises a switch integral part and a shell for covering part of the switch integral part, a first sealing gasket is arranged between the switch integral part and the shell,
the whole switch comprises a pneumatic component, a push rod component arranged on the pneumatic component and two groups of combined contacts with the same specification,
the pneumatic assembly comprises a base with a through hole at the axis, a dent is arranged in the middle of one end of the base, a movable corrugated body, an adjusting screw plug, a second sealing gasket and a screw plug are sequentially arranged on the inner bottom surface of the dent from inside to outside, a fastening screw plug is also arranged at the end part of the adjusting screw plug facing outwards, the fastening screw plug and the adjusting screw plug are adjusted and fixed through a fastener and a spring gasket,
the push rod component comprises a push rod, a first supporting piece arranged at one end of the push rod, a first movable contact component and a second movable contact component which are symmetrical at one end of the push rod and have the same specification by taking the axial lead of the push rod as a base line, wherein the first movable contact component comprises a third insulating sleeve and a fourth insulating sleeve which are arranged on the first supporting piece and are nested and overlapped through a first rivet, the first rivet is provided with a first movable contact close to the fourth insulating sleeve, the first movable contact component also comprises a first insulating sleeve and a second insulating sleeve which are nested and overlapped through the supporting sleeve, a first spring piece is arranged between the joint of the third insulating sleeve and the fourth insulating sleeve and the joint of the first insulating sleeve and the supporting sleeve, a second spring piece is arranged between the joint of the fourth insulating sleeve and the first rivet and the joint of the first insulating sleeve, a gasket is arranged at the joint of the second insulating sleeve and the supporting sleeve, the middle part of the push rod plug is arranged at the first movable contact component and the second contact component, the supporting sleeve and the base seat are connected through a fastener, the push rod component is prevented from generating tilting action when the push rod component is tilted due to the tilting action,
the group of combined contacts comprises a third spring piece and a second supporting piece which are overlapped, the center points of the third spring piece and the second supporting piece are positioned on the same straight line, a second rivet is arranged at the center part of the second supporting piece and the third spring piece, a static contact is arranged at the end part of the second rivet close to the second supporting piece, a fifth insulating sleeve and a sixth insulating sleeve which are overlapped are arranged at the same end part of the second supporting piece and the third spring piece, a seventh insulating sleeve and an eighth insulating sleeve which are overlapped are arranged at the other end of the second supporting piece and the third spring piece, wherein the end parts of the two ends of the second supporting piece and the third spring piece are respectively positioned at the joint of the fifth insulating sleeve and the sixth insulating sleeve and the joint of the seventh insulating sleeve and the eighth insulating sleeve, the two groups of combined contacts are horizontally and parallelly spaced and are positioned above a push rod component, the static contacts of the two groups of combined contacts are respectively opposite to the first movable contact of the first movable contact component and the second movable contact of the second movable contact component in the push rod component, a gap is arranged between the two static contacts and the first movable contact and the second movable contact component respectively, the seventh insulating sleeve and the eighth insulating sleeve in the two groups of combined contacts are connected with a screw through an insulating fastener,
the shell is provided with a socket which is partially embedded into the inner cavity of the shell, the socket end part of the inner cavity of the shell is provided with a group of cable wires with a clamp, the other end of the socket is a plug which penetrates out of the shell, and the cable wires are respectively connected with the two ends of the second spring piece and the third spring piece of the first movable contact assembly and the second movable contact assembly.
The corrugated body comprises a sphere and a first flat section, a first corrugated section, a second corrugated section, a third corrugated section, a fourth corrugated section, a fifth corrugated section and a second flat section which are scattered outwards by taking the sphere as the center, wherein the directions of the corrugations of the adjacent corrugated sections with the same specification of the first corrugated section, the second corrugated section, the third corrugated section, the fourth corrugated section and the fifth corrugated section are opposite, the joints of the sphere and the first flat section, the joints of the first flat section and the first corrugated section, and the joints of the fifth corrugated section and the second flat section are provided with chamfer angles.
The lowest point of the sphere is lower than the bottom surface of the first flat section and the lowest point of the first corrugated section, the bottom surface of the first flat section is higher than the lowest point of the first corrugated section, the highest point of the first flat section is lower than the highest point of the first corrugated section, and the lowest point of the second flat section is higher than the highest point of the first corrugated section.
The second sealing gasket is a metal sealing gasket, the second sealing gasket and the adjusting screw plug form a sealing ring for the corrugated body, the second sealing gasket is made of 20Cr13 material, and the periphery of the corrugated body is mechanically sealed, so that gas leakage is prevented.
A gap is arranged between the corrugated body and the adjusting screw plug.
The supporting sleeve is a metal supporting sleeve and plays a role in guiding.
The first to eighth insulating sleeves are ceramic insulating sleeves to ensure the insulating properties of the first, second and third spring pieces.
The socket is a four-core J599 microminiature connector.
The first sealing gasket is a nonmetallic sealing gasket.
The first spring piece to the third spring piece are made of beryllium bronze, the elastic deformation strength of the spring pieces determines the action displacement of the push rod assembly, and the better the elasticity is, the better the reliable deformation generated by repeated actions is.
The first movable contact, the second movable contact and the two fixed contacts are made of silver tin oxide materials with good electric conductivity.
The base is made of 15-5PH stainless steel, and the gap between the corrugated body and the adjusting screw plug is ensured during assembly and adjustment.
The corrugated body is made of Mn steel strips, the action pressure and the action travel are calculated, the action service life of the switch is guaranteed, and the reasonable deformation size of the corrugated body is determined and heat treatment is carried out to ensure the elastic performance and the fatigue strength of the corrugated body.
The position and the size of the fastening screw plug and the screw plug are very important in assembly and debugging, so that the installation requirement of the screw rod is ensured, and the position relation between the fastening screw plug and the screw plug is ensured.
The socket is fixedly connected with the shell through the fastener, the fastener is fixedly connected with the socket through the screw thread adhesive, the cable clamp is used for fixing the four-core wire on the fastener, damage of excessive vibration to a cable wire during switch application is prevented, the wire is well welded with the two fixed contacts, and corresponding contacts in the socket are determined according to circuit contacts and are firmly welded.
The application method of the airtight pneumatic switch comprises the following steps:
1) Assembling all parts of the airtight pneumatic switch, wherein at the moment, two groups of combined contacts and the push rod assembly form two groups of normally open circuits, and the corrugated body is in a free state;
2) Connecting a high-pressure gas pipeline to the non-concave end part of the base, so that the high-pressure gas pipeline is communicated with the through hole of the base;
3) Inputting high-pressure gas, compressing the corrugated body by the high-pressure gas, pushing the push rod assembly by the compressed corrugated body, enabling the first movable contact and the second movable contact to be respectively communicated with the two stationary contacts, and enabling two groups of circuits to be communicated, wherein the corrugated body converts a pressure signal of the high-pressure gas into a mechanical displacement signal, and the communicated circuits convert the mechanical signal into an electric signal;
4) The two groups of connected circuits transmit electric signals to the plug output of the socket through the cable, if the input high-pressure gas is reduced to a specified value, the first spring piece and the second spring piece of the first movable contact assembly and the second movable contact assembly in the corrugated body and the push rod assembly rebound, the first movable contact and the second movable contact are respectively disconnected with the two static contacts, and the two groups of circuits are restored to an initial disconnection state.
The airtight pneumatic switch of this technical scheme's advantage is: 1. the sealing structure is designed integrally, and the limit pressure can reach 26.08MPa; 2. the corrugated body acts accurately, is fatigue-resistant, and has a mechanical life as long as fifteen years; 3. the combination of the contact and the spring piece is adopted to realize the line contact of the fixed contact and the movable contact, and the contact is reliable; 4. the ceramic insulator is adopted, so that the high temperature resistance of the switch can be greatly improved; 5. a J599 socket interface is provided, so that connection of a circuit is facilitated; 6. the whole switch is convenient to connect with the shell assembly, and convenient to debug; 7. the volume is smaller, the weight is lighter, and the screw thread installation is adopted.
The switch has long service life, high temperature resistance, convenient assembly and debugging, small volume, light weight and good circuit connection performance.
Drawings
FIG. 1 is a general assembly view of an embodiment;
FIG. 2 is a block diagram of the switch block in an embodiment;
FIG. 3 is a block diagram of a pushrod assembly according to an embodiment;
FIG. 4 is a block diagram of a combined contact in an embodiment;
FIG. 5 is a block diagram of a pneumatic assembly in an embodiment;
FIG. 6 is a block diagram of the housing in an embodiment;
fig. 7 is a structural diagram of the ripple body in the embodiment.
In the figure, 1, switch unit 2, housing 201, receptacle 202, cable clamp 203, cable 3, first sealing washer 4, pneumatic assembly 401, base 4011, through hole 402, bellows body 4021, ball 4022, first flat 4023, first corrugated 4024, second corrugated 4025, third corrugated 4026, fourth corrugated 4027, fifth corrugated 4028, second flat 403, adjustment plug 404, second sealing washer 405, plug 406, fastening plug 407, spring washer 5, push rod assembly 501, push rod 502, first support piece 503, first rivet 504, third insulation sleeve 505, fourth insulation sleeve 506, first movable contact 5061, second movable contact 507, support sleeve 508, first insulation sleeve 509, second insulation sleeve 5010, first spring piece 5011, second spring piece 5012, gasket 6, combined contact 601, third spring piece 602, second support piece 603, static contact 605, fifth insulation sleeve 606, eighth insulation sleeve 608.
Detailed Description
The following describes the utility model in further detail with reference to examples, but is not intended to limit the utility model.
Examples
Referring to fig. 1, the airtight pneumatic switch comprises a switch unit 1 and a housing 2 covering a part of the switch unit, a first sealing gasket 3 is provided between the switch unit 1 and the housing 2,
as shown in fig. 2, the switch assembly 1 comprises a pneumatic assembly 4, a push rod assembly 5 mounted on the pneumatic assembly 4, and two sets of combined contacts 6 with the same specification, wherein in fig. 2, (a) is a front view of the push rod assembly in the direction, (b) is a front view of the combined contacts in the direction, (c) is a top view of the push rod assembly in the direction (b),
as shown in fig. 5, the pneumatic assembly 4 comprises a base 401 with a through hole 4011 on the axis, a concave is arranged in the middle of one end of the base 401, a movable corrugated body 402, an adjusting screw plug 403, a second sealing washer 404 and a screw plug 405 are sequentially arranged on the inner bottom surface of the concave from inside to outside, a fastening screw plug 406 is further arranged on the outward end of the adjusting screw plug 403, the fastening screw plug 406 and the adjusting screw plug 403 are adjusted and fixed through a fastening piece and a spring washer 407,
as shown in fig. 3, the push rod assembly 5 includes a push rod 501, a first supporting plate 502 disposed at one end of the push rod 501, and a first movable contact assembly and a second movable contact assembly which are symmetrical and have the same specification and use the axial lead of the push rod as a base line, the first movable contact assembly includes a third insulating sleeve 504 and a fourth insulating sleeve 505 which are disposed on the first supporting plate 502 and are nested and overlapped by the first rivet 503, a first movable contact 506 which is disposed on the first rivet 503 and is close to the fourth insulating sleeve 505, the first movable contact assembly further includes a first insulating sleeve 508 and a second insulating sleeve 509 which are nested and overlapped by the supporting sleeve 507, a first spring piece 5010 is disposed between the junction of the third insulating sleeve 504 and the fourth insulating sleeve 505 and the junction of the first insulating sleeve 508 and the supporting sleeve 507, a second 5011 is disposed between the junction of the fourth insulating sleeve 505 and the first insulating sleeve 508 and the junction of the second insulating sleeve 509, a spacer 5012 is disposed on the second insulating sleeve and the supporting sleeve 509, the spacer 507 is sleeved on the middle portion of the second insulating sleeve and the supporting sleeve 403, the first contact assembly is connected with the first contact assembly 401 and the base seat assembly by the adjusting member 401,
as shown in fig. 4, the set of combined contacts 6 includes a third spring piece 601 and a second supporting piece 602 which are stacked, the center points of the third spring piece 601 and the second supporting piece 602 are on the same straight line, a second rivet 603 is arranged at the center parts of the second supporting piece 602 and the third spring piece 601, a static contact 604 is arranged at the end part of the second rivet 603 close to the second supporting piece 602, a fifth insulating sleeve 605 and a sixth insulating sleeve 606 which are stacked are arranged at the same end parts of the second supporting piece 602 and the third spring piece 601, a seventh insulating sleeve 607 and an eighth insulating sleeve 608 which are stacked are arranged at the other end, wherein the two end parts of the second supporting plate 602 and the third spring plate 601 are respectively positioned at the connection part of the fifth insulating sleeve 605 and the sixth insulating sleeve 606 and the connection part of the seventh insulating sleeve 607 and the eighth insulating sleeve 608, the two groups of combined contacts 6 are horizontally and parallelly spaced above the push rod assembly 5, the fixed contacts 604 of the two groups of combined contacts 6 are respectively opposite to the first movable contact 506 of the first movable contact assembly and the second movable contact 5061 of the second movable contact assembly in the push rod assembly 5, gaps are respectively arranged between the two fixed contacts 604 and the first movable contact 506 and the second movable contact 5061, the sixth insulating sleeve 606 and the eighth insulating sleeve 608 in the two groups of combined contacts 6 are connected with the screw plug 405 through fasteners,
as shown in fig. 6, the housing 2 is provided with a socket 201 partially embedded in the cavity of the housing 2, a group of cable 203 with a clamp 202 is provided at the end of the socket 201 in the cavity of the housing 2, the other end of the socket 201 is a plug penetrating out of the housing, and the cable 203 is respectively connected with two ends of the second spring piece 5011 of the first movable contact assembly and the second movable contact assembly and the third spring piece 601 of the two groups of combined contacts 6.
As shown in fig. 7, the corrugated body 402 includes a ball 4021, and a first flat section 4022, a first corrugated section 4023, a second corrugated section 4024, a third corrugated section 4025, a fourth corrugated section 4026, a fifth corrugated section 4027, and a second flat section 4028, where the directions of the corrugations of the adjacent corrugated sections with the same specifications of the first corrugated section 4023, the second corrugated section 4024, the third corrugated section 4025, the fourth corrugated section 4026, and the fifth corrugated section 4027 are opposite and the connection is tangent, the connection between the ball 4021 and the first flat section 4022, the connection between the first flat section 4022 and the first corrugated section 4023, and the connection between the fifth corrugated section 4027 and the second flat section 4028 are provided with rounded corners, in this example, the ball 1, the first flat section 4022, the first corrugated section 3, the second corrugated section 4024, the third corrugated section 5, the fourth corrugated section 6, the fifth corrugated section 4027, and the corrugated section 8 are integrally formed into a basin-shaped body 402, the diameter of the ball 402 is 26.3 mm, and the diameter of the ball 402 is 0.3mm, and the diameter of the ball is 0.3mm, and the diameter of the average diameter of the ball is 0.3mm.
The lowest point of the ball 4021 is lower than the bottom surface of the first flat segment 4022 and the lowest point of the first corrugated segment 4023, the bottom surface of the first flat segment 4022 is higher than the lowest point of the first corrugated segment 4023, the highest point of the first flat segment 4022 is lower than the highest point of the first corrugated segment 4023, and the lowest point of the second flat segment 4028 is higher than the highest point of the first corrugated segment 4023.
The second sealing washer 404 is a metal sealing washer, and the second sealing washer 404 and the adjusting screw plug 403 form a sealing ring against the corrugated body 402.
A gap is provided between the bellows 402 and the adjusting screw 403.
The supporting sleeve 507 is a metal supporting sleeve.
The first insulating sleeve 508 to the eighth insulating sleeve 608 are all ceramic insulating sleeves.
The receptacle 201 is a four-core J599 subminiature connector.
The first sealing gasket 3 is a non-metallic sealing gasket.
The materials of the first spring piece 5010 to the third spring piece 601 are beryllium bronze.
The first movable contact 506, the second movable contact 5061 and the two stationary contacts 604 are made of silver tin oxide materials with good electric conductivity.
The material of the base 401 is 15-5PH stainless steel.
The corrugated body 402 is made of Mn steel strip.
The application method of the airtight pneumatic switch comprises the following steps:
1) Assembling all parts of the airtight pneumatic switch, wherein two groups of combined contacts 6 and a push rod assembly 5 form two groups of normally open circuits, and the corrugated body 402 is in a free state;
2) Connecting a high-pressure gas pipe at the non-recessed end of the base 401 such that the high-pressure gas pipe communicates with the through-hole 4011 of the base 401;
3) Inputting high-pressure gas, compressing the corrugated body 402 by the high-pressure gas, pushing the push rod 501 of the push rod assembly 5 by the compressed corrugated body 402, enabling the first movable contact 506 and the second movable contact 5061 to be respectively communicated with the two fixed contacts 604 by the action of the push rod 501, enabling two groups of circuits to be communicated, at the moment, converting a pressure signal of the high-pressure gas into a mechanical displacement signal by the corrugated body 402, and converting the mechanical signal into an electric signal by the communicated circuits;
4) The two groups of connected circuits transmit electric signals to the plug output of the socket 201 through the cable 203, if the input high-pressure gas is reduced to a specified value, the first spring piece 5010 and the second spring piece 5011 of the first movable contact assembly and the second movable contact assembly in the corrugated body 402 and the push rod assembly 5 rebound, the first movable contact 506 and the second movable contact 5061 are respectively disconnected from the two fixed contacts 604, and the two groups of circuits are restored to an initial disconnection state.
Through theoretical design calculation, analysis and simulation, the long-term working air pressure of the airtight pneumatic switch reaches 2.5MPa, the limit air pressure reaches 26.08MPa, and the airtight pneumatic switch meets most industrial application environments.
Claims (7)
1. The airtight pneumatic switch is characterized by comprising a switch integral part and a shell for covering part of the switch integral part, a first sealing gasket is arranged between the switch integral part and the shell,
the whole switch comprises a pneumatic component, a push rod component arranged on the pneumatic component and two groups of combined contacts with the same specification,
the pneumatic assembly comprises a base with a through hole at the axis, a dent is arranged in the middle of one end of the base, a movable corrugated body, an adjusting screw plug, a second sealing gasket and a screw plug are sequentially arranged on the inner bottom surface of the dent from inside to outside, a fastening screw plug is also arranged at the end part of the adjusting screw plug facing outwards, the fastening screw plug and the adjusting screw plug are adjusted and fixed through a fastener and a spring gasket,
the push rod component comprises a push rod, a first supporting sheet arranged at one end of the push rod, a first movable contact component and a second movable contact component which are symmetrical at one end of the push rod and have the same specification by taking the axial lead of the push rod as a base line, wherein the first movable contact component comprises a third insulating sleeve and a fourth insulating sleeve which are arranged on the first supporting sheet and are nested and overlapped through a first rivet, a first movable contact close to the fourth insulating sleeve is arranged on the first rivet, the first movable contact component also comprises a first insulating sleeve and a second insulating sleeve which are nested and overlapped through the supporting sleeve, a first spring piece is arranged between the joint of the third insulating sleeve and the fourth insulating sleeve and the joint of the first insulating sleeve and the supporting sleeve, a second spring piece is arranged between the joint of the fourth insulating sleeve and the first rivet and the joint of the first insulating sleeve, a gasket is arranged at the joint of the second insulating sleeve and the supporting sleeve, the push rod is arranged at the middle part of the adjusting screw plug, the supporting sleeve of the first movable contact component and the second contact component is connected with a base through a fastener,
the combined contact comprises a third spring piece and a second supporting piece which are overlapped, the center points of the third spring piece and the second supporting piece are positioned on the same straight line, a second rivet is arranged at the center part of the second supporting piece and the third spring piece, a static contact is arranged at the end part of the second rivet close to the second supporting piece, a fifth insulating sleeve and a sixth insulating sleeve which are overlapped are arranged at the same end part of the second supporting piece and the third spring piece, a seventh insulating sleeve and an eighth insulating sleeve which are overlapped are arranged at the other end of the second supporting piece and the third spring piece, wherein the end parts of the two ends of the second supporting piece and the third spring piece are respectively positioned at the joint of the fifth insulating sleeve and the sixth insulating sleeve and the joint of the seventh insulating sleeve and the eighth insulating sleeve, the two groups of combined contacts are horizontally and parallelly spaced and positioned above a push rod component, the static contacts of the two groups of combined contacts are respectively opposite to the first movable contact of the first movable contact component and the second movable contact of the second movable contact component in the push rod component, a gap is arranged between the two static contacts and the first movable contact and the second movable contact component, the eighth insulating sleeve and the eighth insulating sleeve are respectively connected with a screw fastener,
the shell is provided with a socket which is partially embedded into the inner cavity of the shell, the socket end part of the inner cavity of the shell is provided with a group of cable wires with a clamp, the other end of the socket is a plug which penetrates out of the shell, and the cable wires are respectively connected with the two ends of the second spring piece of the first movable contact assembly and the second movable contact assembly and the third spring piece of the two groups of combined contacts.
2. The hermetically sealed pneumatic switch of claim 1 wherein the bellows comprises a sphere and a first flat section, a first bellows section, a second bellows section, a third bellows section, a fourth bellows section, a fifth bellows section, and a second flat section that scatter outward about the sphere, wherein the first bellows section, the second bellows section, the third bellows section, the fourth bellows section, and the fifth bellows section have the same dimensions as the adjacent bellows sections and are oriented opposite and have a junction tangent to each other, and the junction of the sphere and the first flat section, and the first bellows section, and the fifth bellows section, and the second flat section are chamfered.
3. The hermetically sealed pneumatic switch of claim 2 wherein the lowest point of the sphere is below the bottom surface of the first flat section and the lowest point of the first corrugated section, the bottom surface of the first flat section is above the lowest point of the first corrugated section, the highest point of the first flat section is below the highest point of the first corrugated section, and the lowest point of the second flat section is above the highest point of the first corrugated section.
4. The hermetically sealed pneumatic switch of claim 1 wherein the second sealing washer is a metal sealing washer and the second sealing washer forms a seal with the adjusting screw plug against the corrugation.
5. The hermetically sealed pneumatic switch of claim 1 wherein a gap is provided between the bellows and the adjustment screw.
6. The hermetically sealed pneumatic switch of claim 1 wherein the support sleeve is a metal support sleeve.
7. The hermetically sealed pneumatic switch of claim 1 wherein the first to eighth insulating sleeves are ceramic insulating sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320244529.2U CN219321250U (en) | 2023-02-17 | 2023-02-17 | Air-tight pneumatic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320244529.2U CN219321250U (en) | 2023-02-17 | 2023-02-17 | Air-tight pneumatic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219321250U true CN219321250U (en) | 2023-07-07 |
Family
ID=87033760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320244529.2U Active CN219321250U (en) | 2023-02-17 | 2023-02-17 | Air-tight pneumatic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219321250U (en) |
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2023
- 2023-02-17 CN CN202320244529.2U patent/CN219321250U/en active Active
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