CN220253122U - Miniature pressure switch - Google Patents
Miniature pressure switch Download PDFInfo
- Publication number
- CN220253122U CN220253122U CN202321822523.5U CN202321822523U CN220253122U CN 220253122 U CN220253122 U CN 220253122U CN 202321822523 U CN202321822523 U CN 202321822523U CN 220253122 U CN220253122 U CN 220253122U
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- Prior art keywords
- spring piece
- pressure switch
- cavity
- spring
- wear
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- 230000035772 mutation Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000003068 static effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a miniature pressure switch, which belongs to the field of switches and comprises a pressure switch body, a push rod, a spring piece and a wear-resistant gasket, wherein the push rod is arranged on the pressure switch body; the inner side of the pressure switch body is provided with a cavity, the spring piece is positioned at the inner side of the cavity, and the wear-resistant gasket is arranged between the lower part of the outer edge of the spring piece and the bottom wall of the cavity; the upper end of the ejector rod extends into the cavity and passes through the wear-resistant gasket to extend to the lower side of the central position of the spring piece. The critical force required can be obtained in the switch according to the setting of the protruding degree of the spring piece, and the larger the protruding degree is, the larger the critical force is, and the smaller the contrary is. Under the condition that the protruding degree of the spring pieces is unchanged in the switch, the required critical force can be obtained according to the number of the spring pieces, and the critical force is larger as the number of the spring pieces is larger, or smaller as the number of the spring pieces is larger.
Description
Technical Field
The present utility model relates to the field of switches, and more particularly to miniature pressure switches.
Background
The utility model is CN208596642U discloses a pressure switch, including shell and switch support, the shell includes upper casing and lower casing, be equipped with static plug sheet and movable plug sheet on the switch support, the switch support sets up on the lower casing, and static plug sheet and movable plug sheet wear out from the one end that the upper casing was kept away from to the lower casing respectively, be equipped with the static contact on the static plug sheet, be equipped with the elastic movable contact on the movable plug sheet, the elastic movable contact is located the one side that the static contact kept away from the upper casing, and the elastic movable contact touches with the static contact when not receiving external force, slidable is provided with the ejector pin on the lower casing, and the tip of ejector pin corresponds the elastic movable contact setting, and the lower casing is equipped with the snap spring that arches upward casing direction in the one end that is close to the upper casing, and the snap spring is kept away from the one end interference fit of elastic movable contact with the ejector pin, be equipped with the water inlet on the upper casing, its characterized in that: the upper shell and the lower shell are matched in a screwed mode through threads, the upper shell is matched with the lower shell in a sealing mode through a diaphragm, a containing cavity communicated with the water inlet is formed in the upper shell, the diaphragm is arranged in the containing cavity, the lower shell can press the diaphragm on the bottom face of the containing cavity, the diaphragm can press the snap spring through compression deformation, and the snap spring can drive the ejector rod to move to one side close to the elastic moving contact.
When the existing miniature pressure switch is used, due to the fact that the water flow force of the trigger spring piece is different, when the water flow force is large, the trigger is sensitive, when the water flow force is small, the trigger is not sensitive enough, and errors are easy to occur.
Disclosure of Invention
In view of the problems in the prior art, it is an object of the present utility model to provide a miniature pressure switch.
In order to solve the problems, the utility model adopts the following technical scheme.
The miniature pressure switch comprises a pressure switch body, a push rod, a spring piece and a wear-resistant gasket; the inner side of the pressure switch body is provided with a cavity, the spring piece is positioned at the inner side of the cavity, and the wear-resistant gasket is arranged between the lower part of the outer edge of the spring piece and the bottom wall of the cavity; the upper end of the ejector rod extends into the cavity and passes through the wear-resistant gasket to extend to the lower side of the central position of the spring piece.
The wear-resistant gasket is provided with at least one; at least one spring piece is arranged.
The middle part of the spring piece is provided with a deformation region R, and in a natural state, the deformation region R is of a convex structure protruding towards the direction away from the ejector rod.
The spring piece has the mutation point, and when external force acts downwards, and reaches certain deformation dynamics, the deformation region R of spring piece evagination transiently changes into the indent state, and the critical point of instantaneous transition is the mutation point, and the minimum external force that the required at mutation point is critical force Fmin.
When the spring piece is one, the protruding degree of the spring piece deformation region R can be set according to the required critical force Fmin, and the larger the protruding degree is, the larger the critical force Fmin is, and otherwise, the smaller the critical force Fmin is; or under the condition that the protruding degree of the spring piece is not changed, the other spring piece is additionally arranged on the upper side of the spring piece, and meanwhile, the number of the spring pieces is set according to the required critical force Fmin, so that more than two spring pieces are arranged.
Further, the deformation region R has a circular structure in plan view.
Further, the deformation region R occupies 70-100% of the leaf spring area.
Further, the inner bottom wall of the cavity is arranged to be far away from the concave structure of the spring piece.
Further, the concave structure is positioned at the inner side of a perforation arranged at the middle part of the wear-resistant gasket.
Compared with the prior art, the utility model has the advantages that:
1. according to the miniature pressure switch, the protruding degree of the spring piece can be set according to the water flow triggering force in the switch, so that the required critical force is obtained, the larger the protruding degree is, the larger the critical force is, and the smaller the critical force is, so that the sensitivity of water flow triggering is kept.
2. According to the miniature pressure switch, under the condition that the protruding degree of the spring pieces is unchanged in the switch, the required critical force can be obtained according to the arrangement of the number of the spring pieces, and the larger the number of the spring pieces is, the larger the critical force is, and the smaller the critical force is, otherwise.
3. The miniature pressure switch of this scheme sets up to indent structure at the cavity inner bottom wall for after the spring leaf changed to indent state, compare in the inner bottom wall of current horizontality, the spring leaf bottom can be more close the ejector pin, triggers more sensitively.
Drawings
FIG. 1 is a schematic diagram of the front structure of the present utility model;
FIG. 2 is a schematic view of the structure of the spring plate of the present utility model;
FIG. 3 is a schematic diagram of Fmin structure of the present utility model;
FIG. 4 is a schematic view of the structure of the deformation region R according to the present utility model;
fig. 5 is a schematic view of the structure of the concave structure of the present utility model.
The reference numerals in the figures illustrate:
the pressure switch comprises a pressure switch body, a 2 ejector rod, a 3 spring piece and a 4 wear-resistant washer;
a cavity and an R deformation area.
Detailed Description
Example 1:
referring to fig. 1-5, the miniature pressure switch comprises a pressure switch body 1, a push rod 2, a spring piece 3 and a wear-resistant washer 4; the inner side of the pressure switch body 1 is provided with a cavity a, the spring piece 3 is positioned at the inner side of the cavity a, and the wear-resistant gasket 4 is arranged between the lower part of the outer edge of the spring piece 3 and the bottom wall of the cavity a; the upper end of the ejector rod 2 extends into the cavity a and passes through the wear-resistant washer 4 to extend to the lower side of the central position of the spring piece 3. The wear-resistant gasket 4 is provided with at least one; at least one spring piece 3 is arranged, and more than two spring pieces 3 and wear-resistant washers 4 can be arranged.
Referring to fig. 4, a deformation region R is disposed in the middle of the spring plate 3, and in a natural state, the deformation region R is a convex structure protruding toward a direction away from the ejector rod 2. The deformation region R has a circular structure in plan view. The deformation region R accounts for 70-100% of the area of the spring piece 3.
Referring to fig. 3, the spring plate 3 has a mutation point, when an external force acts downward and reaches a certain deformation force, the convex deformation region R of the spring plate 3 is instantaneously transformed into a concave state, the critical point of the instantaneous transformation is the mutation point, and the minimum external force required at the mutation point is the critical force Fmin.
When the spring piece 3 is one, the protruding degree of the deformation region R of the spring piece 3 can be set according to the required critical force Fmin, and the larger the protruding degree is, the larger the critical force Fmin is, and the smaller the critical force Fmin is, so that the sensitivity of water flow triggering is kept; or, referring to fig. 2, under the condition of not changing the protruding degree of the spring piece 3, another spring piece 3 is added on the upper side of the spring piece 3, and meanwhile, the number of the spring pieces 3 is set according to the required critical force Fmin, so that more than two spring pieces 3 are arranged.
Referring to fig. 5, the bottom wall in the cavity a is arranged to be far away from the concave structure of the spring plate 3, and compared with the existing horizontal inner bottom wall, the bottom of the spring plate 3 can be closer to the ejector rod 2, so that the triggering is more sensitive. The concave structure is positioned at the inner side of the perforation arranged at the middle part of the wear-resistant gasket 4, so that the wear-resistant gasket 4 has enough contact area with the inner bottom wall of the cavity a, and the wear-resistant gasket 4 is stably placed.
Claims (5)
1. The miniature pressure switch comprises a pressure switch body (1), an ejector rod (2), a spring piece (3) and a wear-resistant gasket (4); the pressure switch is characterized in that a cavity (a) is formed in the inner side of the pressure switch body (1), the spring piece (3) is positioned in the inner side of the cavity (a), and the wear-resistant gasket (4) is arranged between the lower part of the outer edge of the spring piece (3) and the bottom wall of the cavity (a); the upper end of the ejector rod (2) extends into the cavity (a) and passes through the wear-resistant gasket (4) to extend to the lower side of the central position of the spring piece (3); the method is characterized in that:
the wear-resistant gasket (4) is provided with at least one; the spring piece (3) is at least provided with one;
the middle part of the spring piece (3) is provided with a deformation area R, and in a natural state, the deformation area R is of a convex structure protruding towards the direction away from the ejector rod (2);
the spring piece (3) is provided with a mutation point, when an external force acts downwards and reaches deformation force, the convex deformation region R of the spring piece (3) is instantaneously converted into a concave state, the critical point of the instantaneous conversion is the mutation point, and the minimum external force required at the mutation point is critical force Fmin;
when the spring piece (3) is one, the protruding degree of the deformation region R of the spring piece (3) can be set according to the required critical force Fmin, and the larger the protruding degree is, the larger the critical force Fmin is, and the smaller the critical force Fmin is, otherwise; or, under the condition that the protruding degree of the spring piece (3) is not changed, the other spring piece (3) is additionally arranged on the upper side of the spring piece (3), and meanwhile, the number of the spring pieces (3) is set according to the required critical force Fmin, so that more than two spring pieces (3) are arranged.
2. The micro pressure switch of claim 1, wherein: the deformation region R is in a circular structure in overlooking.
3. The micro pressure switch of claim 1, wherein: the deformation region R accounts for 70-100% of the area of the spring piece (3).
4. The micro pressure switch of claim 1, wherein: the inner bottom wall of the cavity (a) is arranged to be far away from the concave structure of the spring piece (3).
5. The micro pressure switch of claim 4, wherein: the concave structure is positioned at the inner side of a perforation arranged in the middle of the wear-resistant gasket (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822523.5U CN220253122U (en) | 2023-07-11 | 2023-07-11 | Miniature pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822523.5U CN220253122U (en) | 2023-07-11 | 2023-07-11 | Miniature pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220253122U true CN220253122U (en) | 2023-12-26 |
Family
ID=89266779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321822523.5U Active CN220253122U (en) | 2023-07-11 | 2023-07-11 | Miniature pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220253122U (en) |
-
2023
- 2023-07-11 CN CN202321822523.5U patent/CN220253122U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |