CN216791497U - Negative pressure induction device - Google Patents
Negative pressure induction device Download PDFInfo
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- CN216791497U CN216791497U CN202122635772.0U CN202122635772U CN216791497U CN 216791497 U CN216791497 U CN 216791497U CN 202122635772 U CN202122635772 U CN 202122635772U CN 216791497 U CN216791497 U CN 216791497U
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- sealing cover
- negative pressure
- elastic sealing
- induction device
- pressure induction
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Abstract
The utility model belongs to the technical field of pressure sensing devices, and particularly relates to a negative pressure sensing device which comprises a main body and an outer shell, wherein a switch is arranged at the top of the main body, a connecting contact is arranged at the bottom of the switch, a containing cavity is concavely arranged at the bottom of the main body, an elastic sealing cover is arranged in the containing cavity, an elastic corrugated block is integrally arranged on the elastic sealing cover, a sensing through hole is formed in the bottom of the outer shell, a push plate is arranged in the elastic sealing cover, a spring is arranged between the push plate and the sensing through hole, a convex block is upwards protruded at the top of the elastic sealing cover, and the convex block is abutted to the connecting contact. The utility model has novel structure and ingenious design, when the lug is abutted against the connecting contact, an external working circuit can be opened or disconnected, when the device is used, the sensing through hole is communicated with an external detection area, pressure difference is formed between the inside of the accommodating cavity and the detection area, the push plate pushes the spring to contract, the elastic corrugated block is folded, so that the lug is not abutted against the connecting contact any more, and at the moment, the switch opens or disconnects the external working circuit.
Description
Technical Field
The utility model belongs to the technical field of pressure sensing devices, and particularly relates to a negative pressure sensing device.
Background
Sensors are increasingly applied to various devices, the sensors can convert external physical information into usable output electric signals according to a certain rule, and pressure sensors can convert pressure signals into electric signals. The negative pressure inductor on the market has the advantages of complex structure, long assembly time, large volume, difficulty in production, low induction sensitivity, difficulty in controlling the quality of finished products, high maintenance cost, no automatic pressure maintaining according to the pressure and low automation degree, and some negative pressure induction devices set the working interval time to achieve the automatic pressure maintaining effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a negative pressure induction device aiming at the problems in the prior art, which has the advantages of simple structure, small volume and high sensitivity.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a negative pressure induction system, includes main part and shell body, the top of main part is provided with the switch, the bottom of switch is provided with the connection contact, the concave holding chamber that is equipped with in bottom of main part, the holding intracavity is provided with the elastic sealing cover, the elastic sealing cover integral type is provided with the elasticity ripple piece, the response through-hole has been seted up to the bottom of shell body, the elastic sealing cover set up in the periphery of response through-hole, be provided with the push pedal in the elastic sealing cover, the push pedal with be provided with the spring between the response through-hole, the elastic sealing cover with the inseparable laminating of shell body, the top of elastic sealing cover is upwards protruding formation lug, the lug with the connection contact butt.
The bottom of the elastic sealing cover is bent outwards to form a bent portion, the bent portion wraps the side wall of the accommodating cavity, and the bottom of the outer shell is tightly attached to the bent portion.
Wherein, the bottom outer wall of main part is fitted with a contraceptive ring and is equipped with the joint groove, the portion of bending is fitted with a contraceptive ring and is equipped with the joint piece, the joint piece with joint groove joint.
The bottom ring of shell body is equipped with the recess, be equipped with the sealing washer in the recess, the elastic seal cover and the sealing washer all adopts the silica gel material, the sealing washer with the laminating of the portion of bending.
The outer wall of the main body is provided with external threads, the inner wall of the outer shell is provided with internal threads, and the external threads correspond to the internal threads.
Wherein, be provided with many antiskid groove on the shell body.
The elastic sealing cover is detachably arranged in the accommodating cavity.
The bottom inner side of the shell body is convexly provided with an annular positioning block, the positioning block is arranged on the periphery of the induction through hole, and the bottom of the spring is sleeved on the positioning block.
The positioning groove is formed in the edge of the bottom of the push plate in a surrounding mode, and the top of the spring extends into the positioning groove.
The utility model has the beneficial effects that: the utility model has novel structure and ingenious design, when the lug is abutted with the connecting contact, an external working circuit can be opened or disconnected, when the device is used, the sensing through hole is communicated with an external detection area, when the detection area is vacuumized, pressure difference is formed between the interior of the containing cavity and the detection area, the elastic sealing cover deforms, the push plate pushes the spring to contract, the elastic corrugated block is folded, so that the lug is not abutted with the connecting contact any more, at the moment, the switch opens or disconnects the external working circuit, and the original shape is restored when the vacuum degree is released, thereby realizing sensing work.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
The reference numerals are respectively: 1. the main part, 2, the shell body, 3, the switch, 4, the connection contact, 5, the holding chamber, 6, the elasticity sealed cowling, 7, elasticity ripple piece, 8, response through-hole, 9, the lug, 10, the portion of bending, 11, joint groove, 12, joint piece, 13, the sealing washer, 14, the external screw thread, 15, internal thread, 16, antiskid groove, 17, the push pedal, 18, the spring, 19, the locating piece, 20, the constant head tank.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.
The utility model provides a negative pressure induction device, as shown in fig. 1-2, includes main part 1 and shell body 2, the top of main part 1 is provided with switch 3, switch 3's bottom is provided with connecting contact 4, the concave holding chamber 5 that is equipped with in bottom of main part 1, be provided with elastic sealing cover 6 in the holding chamber 5, elastic sealing cover 6 integral type is provided with elastic ripple piece 7, response through-hole 8 has been seted up to the bottom of shell body 2, elastic sealing cover 6 set up in the periphery of response through-hole 8, be provided with push pedal 17 in the elastic sealing cover 6, push pedal 17 with be provided with spring 18 between the response through-hole 8, elastic sealing cover 6 with the inseparable laminating of shell body 2, the top of elastic sealing cover 6 upwards protruding formation lug 9, lug 9 with connecting contact 4 butt. Specifically, the utility model has novel structure and ingenious design, when the bump 9 is abutted to the connecting contact 4, an external working circuit can be opened or disconnected, when the device is used, the sensing through hole 8 is communicated with an external detection area, when the detection area is vacuumized, pressure difference is formed between the inside of the accommodating cavity 5 and the detection area, the elastic sealing cover 6 is deformed, the push plate 17 pushes the spring 18 to contract, the elastic corrugated block 7 is folded, so that the bump 9 is not abutted to the connecting contact 4, and at the moment, the switch 3 opens or disconnects the external working circuit.
This example negative pressure induction system, the bottom of elastic sealing cover 6 all bends to the outside and forms the portion of bending 10, the portion of bending 10 wraps up the lateral wall in holding chamber 5, the bottom of shell body 2 with the portion of bending 10 closely laminates. Specifically, the bent portion 10 wraps the side wall of the accommodating cavity 5, so that gas is effectively prevented from entering from the side wall of the accommodating cavity 5.
This example a negative pressure induction system, the bottom outer wall of main part 1 is fitted with a contraceptive ring and is equipped with joint groove 11, the portion of bending 10 is fitted with a contraceptive ring and is equipped with joint piece 12, joint piece 12 with 11 joints in joint groove. In particular, the above arrangement provides a stable connection of the elastic sealing cap 6 to the body 1.
This example a negative pressure induction system, the bottom ring of shell body 2 is equipped with the recess, be equipped with sealing washer 13 in the recess, elastic seal cover 6 and sealing washer 13 all adopts the silica gel material, sealing washer 13 with the laminating of portion 10 of bending. Specifically, the elastic sealing cover 6 is tightly attached to the sealing ring 13, so that gas is effectively prevented from entering.
This example negative pressure induction system, be provided with external screw thread 14 on the outer wall of main part 1, the inner wall of shell body 2 is equipped with internal thread 15, external screw thread 14 with internal thread 15 corresponds the setting.
In the negative pressure sensing device of this embodiment, the outer casing 2 is provided with a plurality of anti-slip grooves 16. Specifically, the above arrangement makes it easier to assemble the main body 1 with the outer case 2.
In the negative pressure sensing device of the present embodiment, the elastic sealing cover 6 is detachably disposed in the accommodating cavity 5. Specifically, the elastic sealing cap 6 can be replaced after the sealing performance is reduced after a period of use.
In the negative pressure sensing device of this embodiment, an annular positioning block 19 is convexly disposed on the inner side of the bottom of the outer shell 2, the positioning block 19 is disposed on the periphery of the sensing through hole 8, and the bottom of the spring 18 is sleeved on the positioning block 19.
In the negative pressure sensing device of this embodiment, the bottom edge of the push plate 17 is provided with a positioning groove 20 in a circular manner, and the top of the spring 18 extends into the positioning groove 20.
Specifically, the spring 18 is positioned by the positioning block 19 and the positioning groove 20, so that the spring 18 is not easy to shake and fall off at will, and the push plate 17 is stable when pushing the spring 18 to contract.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (9)
1. A negative pressure induction device is characterized in that: including main part and shell body, the top of main part is provided with the switch, the bottom of switch is provided with the connection contact, the concave holding chamber that is equipped with in bottom of main part, the holding intracavity is provided with the elastic sealing cover, the elastic sealing cover integral type is provided with the elastic corrugation piece, the response through-hole has been seted up to the bottom of shell body, the elastic sealing cover set up in the periphery of response through-hole, be provided with the push pedal in the elastic sealing cover, the push pedal with be provided with the spring between the response through-hole, the elastic sealing cover with the inseparable laminating of shell body, the top of elastic sealing cover is upwards protruding to form the lug, the lug with the connection contact butt.
2. The negative pressure induction device according to claim 1, wherein: the bottom of the elastic sealing cover is bent outwards to form a bent portion, the bent portion wraps the side wall of the accommodating cavity, and the bottom of the outer shell is tightly attached to the bent portion.
3. The negative pressure induction device according to claim 2, wherein: the bottom outer wall of main part is fitted with a contraceptive ring and is equipped with the joint groove, the portion of bending is fitted with a contraceptive ring and is equipped with the joint piece, the joint piece with joint groove joint.
4. The negative pressure induction device according to claim 2, wherein: the bottom ring of shell body is equipped with the recess, be equipped with the sealing washer in the recess, the elastic seal cover and the sealing washer all adopts the silica gel material, the sealing washer with the laminating of portion of bending.
5. The negative pressure induction device according to claim 1, wherein: the outer wall of the main body is provided with external threads, the inner wall of the outer shell is provided with internal threads, and the external threads correspond to the internal threads.
6. The negative pressure induction device according to claim 1, wherein: the shell body is provided with a plurality of anti-slip grooves.
7. The negative pressure induction device according to claim 1, wherein: the elastic sealing cover is detachably arranged in the accommodating cavity.
8. The negative pressure induction device according to claim 1, wherein: the bottom of shell body inboard protruding be equipped with annular locating piece, the locating piece set up in the periphery of response through-hole, the bottom cover of spring is located on the locating piece.
9. The negative pressure induction device according to claim 1, wherein: the bottom edge of the push plate is annularly provided with a positioning groove, and the top of the spring extends into the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122635772.0U CN216791497U (en) | 2021-10-29 | 2021-10-29 | Negative pressure induction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122635772.0U CN216791497U (en) | 2021-10-29 | 2021-10-29 | Negative pressure induction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216791497U true CN216791497U (en) | 2022-06-21 |
Family
ID=82003301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122635772.0U Active CN216791497U (en) | 2021-10-29 | 2021-10-29 | Negative pressure induction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216791497U (en) |
-
2021
- 2021-10-29 CN CN202122635772.0U patent/CN216791497U/en active Active
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