CN216773133U - Small-sized pressure switch - Google Patents
Small-sized pressure switch Download PDFInfo
- Publication number
- CN216773133U CN216773133U CN202220244845.5U CN202220244845U CN216773133U CN 216773133 U CN216773133 U CN 216773133U CN 202220244845 U CN202220244845 U CN 202220244845U CN 216773133 U CN216773133 U CN 216773133U
- Authority
- CN
- China
- Prior art keywords
- cavity
- connector
- chamber
- ejector rod
- pressure sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a small pressure switch, which comprises a connector, a connector and a shell, wherein the center of the connector is provided with a pressure sensing channel, a pressure sensing cavity communicated with the pressure sensing channel is formed between the connector and the connector, a top buckle is arranged in the pressure sensing cavity, the top buckle is connected with a top rod, a first cavity and a second cavity are respectively formed in the shell, the first chamber is positioned below the second chamber, the upper part of the mandril penetrates the first chamber upwards and then extends into the second chamber, the upper end of the ejector rod is matched with the position of a switch contact of a microswitch arranged in the second chamber, the first cavity is internally provided with a mounting seat and a fixed seat, the mounting seat is fixedly connected with the lower part of the ejector rod, the fixed seat is sleeved on the upper part of the ejector rod in a sliding manner, and a compression spring is abutted between the mounting seat and the fixed seat. The volume is small, the assembly is convenient, and the volume requirement under special environment can be met; the production cost is low.
Description
Technical Field
The utility model relates to the technical field of pressure switches, in particular to a small pressure switch.
Background
The WDM pressure switch is widely applied to various industrial automatic control environments, and relates to pressure control of petroleum pipelines, water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, military industry, petrifaction, oil wells, electric power, ships, machine tools, pipeline air supply, boiler negative pressure, machinery, refrigeration equipment and water pumps, low-water-level protection pressure control, and gas, steam, water, oil and other industrial equipment in industries such as power plants, cement, food, ships and the like and other industrial equipment for pressure monitoring, alarming and interlocking protection on an actuating mechanism matching sleeve.
However, the traditional pressure switch has a complex structure, a large volume and high manufacturing cost, and cannot meet the volume requirement under special environment; and because the structure influences, the working stability is poor, the device can not be used at higher temperature, and the applicable working condition is limited.
Disclosure of Invention
In view of the shortcomings of the prior art, the utility model aims to provide a small pressure switch which is simple in structure, small in size, low in manufacturing cost and high in working stability.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a small-sized pressure switch is characterized in that: comprises a connector, a connector and a shell which are sequentially connected from bottom to top, wherein the center of the connector is provided with a pressure sensing channel, a pressure sensing cavity communicated with the pressure sensing channel is formed between the connector and the connector, a top buckle is arranged in the pressure sensing cavity, the top buckle is connected with a top rod, a first cavity and a second cavity are respectively formed in the shell, the first chamber is positioned below the second chamber, the upper part of the mandril penetrates the first chamber upwards and then extends into the second chamber, the upper end of the ejector rod is matched with the position of a switch contact of a microswitch arranged in the second chamber, the first cavity is internally provided with a mounting seat and a fixed seat, the mounting seat is fixedly connected with the lower part of the ejector rod, the fixed seat is sleeved on the upper part of the ejector rod in a sliding manner, and a compression spring is abutted between the mounting seat and the fixed seat.
Furthermore, a Husky connector is connected to the top of the shell, and the terminal of the microswitch is electrically connected with the Husky connector through an electric wire.
Furthermore, the micro switch is provided with three wiring ends, namely a C end, an NC end and an NO end, wherein the C end is a public end, a circuit of the C-NC end is in a normally closed state, and a circuit of the C-NO end is in a normally open state.
Furthermore, the micro switch is fixedly connected with the shell through an insulating cushion block.
Furthermore, an adjusting screw is arranged on the ejector rod between the first cavity and the second cavity, and the lower end of the adjusting screw is abutted to the upper end of the fixed seat.
Furthermore, the lower part of adjusting screw is equipped with the holding chamber, the top of fixing base seted up with the boss that the holding chamber suits.
The utility model has the remarkable effects that:
the structure is simple and compact, the volume is small, the assembly is convenient, and the volume requirement under special environment can be met; low production cost, high working stability, wide application range and capability of being used in high-temperature environment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partially enlarged schematic view of a in fig. 1.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a small-sized pressure switch comprises a connector 1, a connector 2 and a housing 9 which are sequentially connected from bottom to top, wherein a pressure sensing channel 14 is formed in the center of the connector 1, a pressure sensing cavity 15 communicated with the pressure sensing channel 14 is formed between the connector 1 and the connector 2, a top buckle 3 is arranged in the pressure sensing cavity 15, the top buckle 3 is connected with a top rod 5, a first cavity 16 and a second cavity 17 are respectively formed in the housing 9, the first cavity 16 is positioned below the second cavity 17, the upper part of the top rod 5 upwards penetrates through the first cavity 16 and then extends into the second cavity 17, the upper end of the top rod 5 is adapted to the switch contact position of a micro switch 10 installed in the second cavity 17, the micro switch 10 is fixedly connected with the housing 9 through an insulating cushion block 12, a mounting seat 4 and a fixing seat 6 are further arranged in the first cavity 16, the mounting seat 4 is fixedly connected with the lower part of the ejector rod 5, the fixed seat 6 is sleeved on the upper part of the ejector rod 5 in a sliding manner, and a compression spring 11 is abutted between the mounting seat 4 and the fixed seat 6.
In actual application: when the equipment pressurizes to the pressure sensing cavity 15 along the pressure sensing channel 14, if the pressure applied to the top buckle 3 is greater than the elastic force of the compression spring 11, the top buckle 3 will push the top rod 5 upwards to move, the top end of the top rod 5 will touch the switch contact of the micro switch 10, and at this time, the switch state of the pressure switch will change. When the pressure of the equipment is reduced, the mandril 5 moves downwards under the action of the elastic restoring force of the compression spring 11, and simultaneously the switch contact of the micro switch 10 is released, and the switch is reset at the moment.
Further, a heusman connector 8 is connected to the top of the housing 9, the terminal of the microswitch 10 is electrically connected to the heusman connector 8 through an electric wire 13, and communication between the microswitch 10 and the controller can be realized through the heusman connector 8.
In this example, the micro switch 10 has three terminals, which are a C terminal, an NC terminal and an NO terminal, respectively, the C terminal is a common terminal, a circuit of the C-NC terminal is in a normally closed state, and a circuit of the C-NO terminal is in a normally open state, so that a wiring state can be selected according to a use condition.
As shown in fig. 2, an adjusting screw 7 is disposed on the top rod 5 between the first chamber 16 and the second chamber 17, the adjusting screw 7 is slid on the top rod 5, an outer wall of the adjusting screw 7 is in threaded connection with the housing 9, a lower end of the adjusting screw 7 abuts against an upper end of the fixing seat 6, specifically: the lower part of adjusting screw 7 is equipped with holding chamber 71, the top of fixing base 6 seted up with the boss 61 that holding chamber 71 suits, through the cooperation of holding chamber 71 and boss 61, can be so that between adjusting screw 7 and the fixing base 6 the cooperation inseparabler.
When the top buckle 3 senses the internal pressurization of the equipment and the pressure is greater than the elastic force of the compression spring 11, the top buckle 3 can push the ejector rod 5 upwards to move, the top end of the ejector rod 5 touches the switch contact of the micro switch 10, and the switch state is changed at the moment. When the top buckle 3 senses that the pressure of the equipment is reduced, the mandril 5 moves downwards under the action of the elastic restoring force of the compression spring 11, and simultaneously releases the switch contact of the micro switch 10, and the switch is reset. The main effect of adjusting screw 7 is adjusting pressure's size, and adjusting screw 7 is rotatory down, and compression spring 11 power value can grow, also needs bigger pressure to promote top knot 3 and ejector pin 5 simultaneously, lets micro-gap switch 10 move. Conversely, less pressure is required to actuate the switch.
The technical solution provided by the present invention is described in detail above. The principles and embodiments of the present invention have been described herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A miniature pressure switch, characterized by: comprises a connector, a connector and a shell which are sequentially connected from bottom to top, wherein the center of the connector is provided with a pressure sensing channel, a pressure sensing cavity communicated with the pressure sensing channel is formed between the connector and the connector, a top buckle is arranged in the pressure sensing cavity, the top buckle is connected with a top rod, a first cavity and a second cavity are respectively formed in the shell, the first chamber is positioned below the second chamber, the upper part of the ejector rod upwards penetrates through the first chamber and then extends into the second chamber, the upper end of the ejector rod is matched with the position of a switch contact of a microswitch arranged in the second chamber, the first cavity is internally provided with a mounting seat and a fixed seat, the mounting seat is fixedly connected with the lower part of the ejector rod, the fixed seat is sleeved on the upper part of the ejector rod in a sliding manner, and a compression spring is abutted between the mounting seat and the fixed seat.
2. The miniature pressure switch of claim 1, wherein: and a Husky man connector is also connected to the top of the shell, and the terminal of the microswitch is electrically connected with the Husky man connector through an electric wire.
3. The miniature pressure switch of claim 1 or 2, wherein: the microswitch is provided with three wiring ends, namely a C end, an NC end and an NO end, wherein the C end is a public end, a circuit of the C-NC end is in a normally closed state, and a circuit of the C-NO end is in a normally open state.
4. The miniature pressure switch of claim 3, wherein: the micro switch is fixedly connected with the shell through an insulating cushion block.
5. The miniature pressure switch of claim 1, wherein: and an adjusting screw is arranged on the ejector rod between the first cavity and the second cavity, and the lower end of the adjusting screw is abutted to the upper end of the fixed seat.
6. The miniature pressure switch of claim 5, wherein: the lower part of the adjusting screw is provided with an accommodating cavity, and the top of the fixing seat is provided with a boss matched with the accommodating cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220244845.5U CN216773133U (en) | 2022-01-29 | 2022-01-29 | Small-sized pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220244845.5U CN216773133U (en) | 2022-01-29 | 2022-01-29 | Small-sized pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216773133U true CN216773133U (en) | 2022-06-17 |
Family
ID=81956393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220244845.5U Active CN216773133U (en) | 2022-01-29 | 2022-01-29 | Small-sized pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216773133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116164142A (en) * | 2022-12-01 | 2023-05-26 | 浙江力夫自控技术股份有限公司 | Pressure-resistant pressure switch |
-
2022
- 2022-01-29 CN CN202220244845.5U patent/CN216773133U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116164142A (en) * | 2022-12-01 | 2023-05-26 | 浙江力夫自控技术股份有限公司 | Pressure-resistant pressure switch |
| CN116164142B (en) * | 2022-12-01 | 2023-11-14 | 浙江力夫自控技术股份有限公司 | Pressure-resistant pressure switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216773133U (en) | Small-sized pressure switch | |
| CN204029677U (en) | The sensitive switch of long stroke | |
| CN210837592U (en) | Vacuum switch | |
| CN111446119A (en) | Maintenance-free gas density relay and calibration method thereof | |
| CN212136343U (en) | Maintenance-free gas density relay and gas density monitoring device | |
| CN217788273U (en) | High-precision small pressure switch | |
| CN215220599U (en) | Integrated pressure switch | |
| CN202992340U (en) | Two-position two-way electromagnetic valve without spring structure | |
| CN205984799U (en) | Pressure control low pressure switch structure | |
| CN212209344U (en) | Quick response small-size large-current temperature controller | |
| CN111952105B (en) | Full-range high-precision remote transmission type sulfur hexafluoride gas density relay | |
| CN217485354U (en) | Independent adjustable double-switch type pressure switch | |
| CN203850214U (en) | Electromagnetic power switch | |
| CN108305814B (en) | Pressure signal device capable of bearing ultrahigh overload for long time | |
| CN207425661U (en) | A kind of pressing plate that status monitoring is provided | |
| CN202309660U (en) | Switch device for electric tool | |
| CN216112372U (en) | Pressure-adjustable pressure switch device | |
| CN206546786U (en) | A kind of life staying idle at home switching device | |
| CN112863148A (en) | Overload protection and reminding device for electrical equipment | |
| CN207765371U (en) | It is a kind of that there is the novel pressure signalling means for bearing superelevation overload for a long time | |
| CN216928411U (en) | Contactor with signal leading-out terminal | |
| CN220121746U (en) | Magnetic latching relay anti-interference device | |
| CN212209342U (en) | High-power small-size temperature controller | |
| CN202282295U (en) | Micro-pressure differential pressure switch | |
| CN218549889U (en) | Contactless explosion-proof hall type temperature control switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |