CN220230785U - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
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- CN220230785U CN220230785U CN202321608456.7U CN202321608456U CN220230785U CN 220230785 U CN220230785 U CN 220230785U CN 202321608456 U CN202321608456 U CN 202321608456U CN 220230785 U CN220230785 U CN 220230785U
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- pressure
- pressure sensing
- pressing
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- 238000007789 sealing Methods 0.000 claims abstract description 35
- 238000003825 pressing Methods 0.000 claims description 60
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 12
- 239000004593 Epoxy Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a pressure sensor, which relates to the technical field of pressure sensing equipment, and comprises: the pressure sensing device comprises a first shell, a second shell and a pressure sensing core; the pressure sensing core body is arranged in the second shell, a cavity is formed in one side, close to the pressure sensing core body, of the second shell, the pressure sensing core body abuts against an opening of the cavity through the sealing ring, a first sliding groove and a second sliding groove are formed in one side, close to the first shell, of the second shell, and a second clamping support is arranged on the second shell; the utility model solves the technical problems that glue or epoxy and other modes are used for connection and sealing, the cost is high, and the disassembly and assembly are difficult in the prior art.
Description
Technical Field
The utility model relates to the technical field of pressure sensing equipment, in particular to a pressure sensor.
Background
The pressure sensor (Pressure Transducer) is a device or apparatus that senses a pressure signal and converts the pressure signal to a usable output electrical signal according to a certain law. However, environmental atmosphere moisture, oxygen, and various corrosive gases as well as shielding electromagnetic interference have a great influence on the accuracy of the pressure sensor, and therefore, the packaging and sealing of the pressure sensor is of great importance.
At present, the encapsulation and the sealing of the pressure sensor are mainly formed by adopting an integrated structure, a sensing core body is welded or glued in a shell, the shell is encapsulated and sealed in a welding, riveting or gluing mode and the like, and meanwhile, an O-shaped sealing ring is used for sealing and encapsulation between the sensing core body and a transmission pipeline in the shell; the other end of the transmission pipeline is connected with the boiler, the pressure vessel, the pressure pipeline and the like through one interface; the encapsulation of casing and the sealing of O type sealing washer all use glue or epoxy etc. to be connected and sealed, but this kind of connection packaging structure is with high costs, and the structure is complicated, and is bulky, in addition, adopts glue etc. to connect or seal to dismantle the equipment difficulty, is inconvenient for the maintenance.
Therefore, the existing pressure sensor is commonly connected and sealed by using glue or epoxy and the like, and has the technical problems of high cost and difficult disassembly and assembly.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a pressure sensor, which aims to solve the technical problems of high cost and difficult disassembly and assembly caused by connection and sealing in the prior art by using glue or epoxy and the like.
The present utility model provides a pressure sensor comprising:
the pressure sensing device comprises a first shell, a second shell and a pressure sensing core;
the pressure sensing core body is arranged in the second shell, a cavity is arranged on one side of the second shell, which is close to the pressure sensing core body, the pressure sensing core body abuts against an opening of the cavity through a sealing ring, and the pressure sensing core body is provided with a cavity
A first sliding groove and a second sliding groove are formed in one side, close to the first shell, of the second shell, and a second clamping support is arranged on the second shell;
the two ends of the first shell are respectively provided with a first clamping component and a second clamping component, the first clamping component comprises a first clamping piece and a first pressing piece connected with the first clamping piece, the second clamping component comprises a second clamping piece and a second pressing piece connected with the second clamping piece, and a first clamping support is arranged on one side, close to the second clamping support, of the first shell;
through will first joint piece slide in the first groove that slides, the second joint piece slide in the second groove that slides, until first card holds in the palm and supports and support in place the second card holds in the palm the back auto-lock, reaches first casing with the auto-lock of second casing, at this moment, first pressure piece with the second pressure piece supports the both sides of pressure sensing core, so that pressure sensing core compresses tightly the sealing washer realizes sealedly.
Compared with the prior art, the pressure sensor shown in the embodiment is adopted, and has the beneficial effects that: the pressure sensor provided by the utility model has the advantages of being sealed by mutually clamping structures, low in cost and simple in disassembly and assembly, and specifically comprises: the pressure sensing device comprises a first shell, a second shell and a pressure sensing core; the pressure sensing core body is arranged in the second shell, a cavity is formed in one side, close to the pressure sensing core body, of the second shell, the pressure sensing core body abuts against an opening of the cavity through the sealing ring, a first sliding groove and a second sliding groove are formed in one side, close to the first shell, of the second shell, and a second clamping support is arranged on the second shell; the two ends of the first shell are respectively provided with a first clamping assembly and a second clamping assembly, the first clamping assembly comprises a first clamping piece and a first pressing piece connected with the first clamping piece, the second clamping assembly comprises a second clamping piece and a second pressing piece connected with the second clamping piece, and the first shell is provided with a first clamping support; through sliding first joint spare in first sliding groove, second joint spare slides in the second sliding groove, until the first card holds in place the back auto-lock of holding in the palm by the second card, reach the auto-lock of first casing and second casing, at this moment, first pressure piece and second pressure piece are held in the palm the both sides of pressing pressure sensing core, so that pressure sensing core compresses tightly the sealing washer and realizes sealedly, need not to connect through other connected modes such as glue, welded structure, with high costs, can not dismantle, be inconvenient for the maintenance, thereby it connects and seals to use modes such as glue or epoxy in the prior art to have solved, with high costs, dismantle the technical problem of equipment difficulty.
According to an aspect of the foregoing technical solution, the first pressing member includes a first guiding portion, a first pressing portion connected to the first guiding portion, and a first limiting portion connected to the first pressing portion, where a thickness of the first guiding portion gradually increases from an end far from the first pressing portion to an end near the first pressing portion, so as to form a first inclined slope, and the second pressing member includes a second guiding portion, a second pressing portion connected to the second guiding portion, and a second limiting portion connected to the second pressing portion, and a thickness of the second guiding portion gradually increases from an end far from the second pressing portion to an end near the second pressing portion, so as to form a second inclined slope.
According to an aspect of the foregoing technical solution, the first pressing portion includes a first arc portion connected to the first guiding portion, and a first plane portion connected to the first arc portion, the first plane portion is connected to the first limiting portion, the second pressing portion includes a second arc portion connected to the second guiding portion, and a second plane portion connected to the second arc portion, and the second plane portion is connected to the second limiting portion.
According to an aspect of the above technical solution, the first limiting portion, the second limiting portion and the first housing surround to form a dovetail groove, the second housing is provided with a dovetail block on a side close to the dovetail groove, and the dovetail block is clamped into the dovetail groove, so that the second housing is clamped into the first housing.
According to the technical scheme, the second clamping support is arranged on the dovetail block, the thickness of the second clamping support gradually decreases from one side close to the pressure sensing core body to one side far away from the pressure sensing core body, and the thickness of the first clamping support gradually increases from one side close to the first guiding part to one side far away from the first guiding part, and the second clamping support moves to abut against the side wall of the second clamping support through the first clamping support so as to limit the first shell and the second shell.
According to an aspect of the above technical solution, the pressure sensing core includes a support plate, and a pressure chip and a circuit board disposed on the support plate, where the support plate abuts against the sealing ring at a side far away from the pressure chip, and the first abutting portion and the second abutting portion abut against two sides of the support plate respectively, so that the support plate compresses the sealing ring to realize sealing.
According to an aspect of the above technical solution, the circuit board includes a first circuit portion, and a second circuit portion connected to the first circuit portion, where the first circuit portion is attached to the support plate, the second circuit portion is disposed on the second housing, a limiting hole is formed in a middle portion of the first circuit portion in a penetrating manner, and the pressure chip passes through the limiting hole.
According to an aspect of the above technical solution, the second circuit portion is connected to the metal terminal at a side far away from the first circuit portion, the second housing is provided with a plurality of mounting holes at a side near to the metal terminal, and the metal terminal passes through the mounting holes to be electrically connected to an external device.
According to an aspect of the above technical solution, the cavity is connected to a transmission pipe at a side far away from the supporting plate, the transmission pipe is disposed in the second housing, and the transmission pipe is used for transmitting the medium to be measured.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a pressure sensor according to the present utility model;
FIG. 2 is a schematic view of the structure of the pressure sensor in the detached state of the present utility model;
FIG. 3 is a schematic view of a second housing and a pressure sensing core according to the present utility model;
FIG. 4 is a cross-sectional view of a pressure sensor in accordance with the present utility model;
description of the drawings element symbols:
the first housing 10, the first clamping member 11, the first pressing member 12, the second clamping member 13, the second pressing member 14, the first clamping support 15, the second housing 20, the first sliding groove 21, the second sliding groove 22, the dovetail block 23, the second clamping support 230, the mounting groove 24, the limit groove 25, the cavity 26, the transmission pipe 27, the pressure sensing core 30, the support plate 31, the pressure chip 32, the circuit board 33, the metal terminal 40, the seal ring 50, the first guide portion 120, the first pressing portion 121, the first limit portion 122, the second guide portion 130, the second pressing portion 131, the second limit portion 132, the annular groove 240, the first circuit portion 330, the second circuit portion 331, the first arc portion 1210, the first plane portion 1211, the second arc portion 1310, and the second plane portion 1311.
Detailed Description
In order to make the objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and the like are used herein for descriptive purposes only and not to indicate or imply that the apparatus or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-4, the present utility model provides a pressure sensor for converting a pressure signal into a usable output electrical signal, wherein the pressure sensor comprises a first housing 10, a second housing 20, and a pressure sensing core 30.
The first housing 10 is slidably clamped to the second housing 20 for self-locking, and is not required to be connected by other connection methods, such as glue, welding, and the like.
Specifically, two ends of the first housing 10 are respectively provided with a first clamping assembly and a second clamping assembly, the first clamping assembly comprises a first clamping piece 11, a first pressing piece 12 connected with the first clamping piece 11, and the second clamping assembly comprises a second clamping piece 13 and a second pressing piece 14 connected with the second clamping piece 13. The first housing 10 is respectively connected with the first pressing member 12 and the second pressing member 14, the first clamping member 11 is vertically connected with the first pressing member 12, the second clamping member 13 is vertically connected with the second pressing member 14, the first clamping member 11 slides in the first sliding groove 21, and the second clamping member 13 slides in the second sliding groove 22.
Further, the first clamping member 11 is disposed at a side away from the first pressing member 12 with an arc edge, and the second clamping member 13 is disposed at a side away from the second pressing member 14 with an inclined edge.
The first pressing member 12 includes a first guiding portion 120, a first pressing portion 121 connected to the first guiding portion 120, and a first limiting portion 122 connected to the first pressing portion 121, where a thickness of the first guiding portion 120 gradually increases from an end far from the first pressing portion 121 to an end near the first pressing portion 121 to form a first inclined slope, the second pressing member 14 includes a second guiding portion 130, a second pressing portion 131 connected to the second guiding portion 130, and a second limiting portion 132 connected to the second pressing portion 131, and a thickness of the second guiding portion 130 gradually increases from an end far from the second pressing portion 131 to an end near the second pressing portion 131 to form a second inclined slope.
Further, when the first housing 10 slides toward the second housing 20, the first guiding portion 120, the first pressing portion 121, and the first limiting portion 122 are sequentially drawn into the second housing 20.
It should be noted that, through the inclined arrangement of the first guiding portion 120 and the second guiding portion 130, on one hand, the first casing 10 slides in the second casing 20 conveniently to play a guiding role, and on the other hand, the thickness of the first guiding portion 120 and the second guiding portion 130 gradually becomes larger in the sliding process of the first casing 10 towards the second casing 20, so as to gradually apply pressure to the pressure sensing core 30 until the pressure sensing core 30 compresses the sealing ring 50, so as to play a sealing role, and avoid the first guiding portion 120 and the second guiding portion 130 directly applying a larger pressure, so that the pressure sensing core 30 is tilted or slid on one side, and the sealing performance between the pressure sensing core 30 and the sealing ring 50 is poor. The pressure sensing core 30 and the cavity 26 need to be sealed by a sealing ring 50 to prevent the medium to be measured in the cavity 26 from corroding the pressure chip 32, which results in the accuracy degradation of the pressure chip 32 and inaccurate measurement.
Further, the first pressing part 121 includes a first arc part 1210 connected to the first guide part 120, and a first plane part 1211 connected to the first arc part 1210, the first plane part 1211 is connected to the first limiting part 122, the second pressing part 131 includes a second arc part 1310 connected to the second guide part 130, and a second plane part 1311 connected to the second arc part 1310, and the second plane part 1311 is connected to the second limiting part 132. The first arc portion 1210 and the second arc portion 1310 are configured to adapt to the size of the second circuit portion 331, so that the second circuit portion 331 is prevented from being damaged due to the first arc portion 1210 and the second arc portion 1310 extruding the second circuit portion 331 during sliding.
In addition, the first limiting portion 122 is inclined towards the second limiting portion 132, and forms an acute inclination angle with the first housing 10, the second limiting portion 132 is inclined towards the first limiting portion 122, and forms an acute inclination angle with the first housing 10, wherein the first limiting portion 122, the second limiting portion 132 and the first housing 10 surround to form a dovetail groove, the second housing 20 is provided with a dovetail block 23 at one side close to the dovetail groove, and the dovetail block 23 is clamped into the dovetail groove, so that the second housing 20 is clamped into the first housing 10. Through the mutually supporting of dovetail groove and dovetail piece 23 to realize the mutual pressure-bearing of first casing 10 and second casing 20, play the effect of high pressure anticreep, increase the stability of first casing 10 and second casing 20 joint.
The first casing 10 is equipped with first card support 15 in the one side that is close to first spacing portion 122 and second spacing portion 132, is equipped with the second card support 230 on the forked tail piece 23, and the thickness that the second card supported 230 is from being close to one side of pressure sensing core 30 to being kept away from pressure sensing core 30 diminishes gradually, and the thickness that the first card supported 15 is from being close to one side of first guide 120 to being kept away from one side of first guide 120 grow gradually, moves to the lateral wall that supports against the second card support 230 through first card support 15, and the auto-lock is in place after, restricts the sliding of first casing 10, realizes the joint between first casing 10 and the second casing 20.
Wherein, the second shell 20 is provided with a first sliding groove 21 and a second sliding groove 22 at one side close to the first shell 10; the first sliding groove 21 is opened towards the direction of the second sliding groove 22, the second sliding groove 22 is opened towards the direction of the first sliding groove 21 so as to be suitable for the sizes of the first clamping piece 11 and the second clamping piece 13, and the opening directions of the first sliding groove 21 and the second sliding groove 22 are set so as to increase the stability of the clamping of the first shell 10 and the second shell 20 and prevent the falling off in the vertical direction.
Further, the second casing 20 is provided with a dovetail block 23 on a side close to the dovetail groove, the dovetail block 23 is arranged on a side wall of the second casing 20, the dovetail block 23 is in an inverted trapezoid shape, when the first guide part 120 and the second guide part 130 of the first casing 10 slide to abut against the side wall of the second casing 20, the dovetail block 23 is clamped into the dovetail groove, so that the second casing 20 is clamped into the first casing 10, the mutual fit bearing of the first casing 10 and the second casing 20 is realized, the stability is increased, and the high-pressure anti-drop effect is achieved.
The dovetail block 23 is provided with a second clamping support 230, the thickness of the second clamping support 230 gradually decreases from one side close to the pressure sensing core 30 to one side far away from the pressure sensing core 30, and when the first guiding portion 120 and the second guiding portion 130 of the first housing 10 slide to abut against the side wall of the second housing 20, the first clamping support 15 and the second clamping support 230 mutually limit, complete self-locking, limit sliding of the first housing 10, and realize clamping connection between the first housing 10 and the second housing 20. The first card support 15 and the second card support 230 are obliquely arranged, and the first card support 15 passes through the thinnest area of the second card support 230, so that the first card support 15 can slide from the outer side of the second shell 20 to the inner side of the second shell 20; until the position is reached, the thickest region of the first clamping support 15 abuts against the thickest region of the second clamping support 230, self-locking is completed, self-locking connection of the first shell 10 and the second shell 20 can be achieved without glue connection, and therefore the service life of the pressure sensing core 30 is prolonged.
Further, a mounting groove 24 is formed in the second housing 20, the pressure sensing core 30 is disposed in the mounting groove 24, a cavity 26 is formed in the side, close to the pressure sensing core 30, of the second housing 20, and the pressure sensing core 30 abuts against an opening of the cavity 26 through a sealing ring 50. The interface of the second housing 20 at the cavity 26 is provided with an annular groove 240, that is, the second housing 20 is provided with the annular groove 240 between the mounting groove 24 and the cavity 26, and the sealing ring 50 is clamped in the annular groove 240, and seals the pressure sensing core 30 by pressing, so as to prevent the medium to be measured in the cavity 26 from corroding the pressure chip 32, resulting in reduced accuracy of the pressure chip 32 and inaccurate measurement.
Further, the cavity 26 is connected to a transmission pipe 27 at a side far away from the supporting plate 31, the transmission pipe 27 is disposed in the second housing 20, and the transmission pipe 27 is used for transmitting the medium to be measured.
In addition, the second housing 20 is provided with a limiting groove 25 at a side close to the second circuit portion 331, the second housing 20 is provided with a mounting hole at a side wall close to the second circuit portion 331, one end of the metal terminal 40 is connected with the second circuit portion 331 through the limiting groove 25, and the other end of the metal terminal 40 is electrically connected with an external device through the mounting hole. Wherein the metal terminal 40 is L-shaped.
In addition, the pressure sensing core 30 includes a support plate 31, a pressure chip 32 and a circuit board 33 disposed on the support plate 31, where the support plate 31 abuts against the sealing ring 50 at a side far away from the pressure chip 32, and the first abutting part 121 and the second abutting part 14 abut against two sides of the support plate 31 respectively, so that the support plate 31 presses the sealing ring 50 to realize sealing, sealing can be realized without sticking the sealing ring 50 in the support plate 31 and the annular groove 240 through glue, cost is reduced, disassembly and assembly can be realized, and maintenance is convenient.
The circuit board 33 includes a first circuit portion 330, and a second circuit portion 331 connected to the first circuit portion 330, where the first circuit portion 330 is attached to the supporting plate 31, the second circuit portion 331 is disposed on the second housing 20, a limiting hole is formed in the middle of the first circuit portion 330, and the pressure chip 32 passes through the limiting hole.
Compared with the prior art, the pressure sensor that this embodiment provided, beneficial effect lies in: the pressure sensor provided by the utility model has the advantages of being sealed by mutually clamping structures, low in cost and simple in disassembly and assembly, and specifically comprises: the pressure sensing device comprises a first shell, a second shell and a pressure sensing core; the pressure sensing core body is arranged in the second shell, a cavity is formed in one side, close to the pressure sensing core body, of the second shell, the pressure sensing core body abuts against an opening of the cavity through the sealing ring, a first sliding groove and a second sliding groove are formed in one side, close to the first shell, of the second shell, and a second clamping support is arranged on the second shell; the two ends of the first shell are respectively provided with a first clamping assembly and a second clamping assembly, the first clamping assembly comprises a first clamping piece and a first pressing piece connected with the first clamping piece, the second clamping assembly comprises a second clamping piece and a second pressing piece connected with the second clamping piece, and the first shell is provided with a first clamping support; through sliding first joint spare in first sliding groove, second joint spare slides in the second sliding groove, until the first card holds in place the back auto-lock of holding in the palm by the second card, reach the auto-lock of first casing and second casing, at this moment, first pressure piece and second pressure piece are held in the palm the both sides of pressing pressure sensing core, so that pressure sensing core compresses tightly the sealing washer and realizes sealedly, need not to connect through other connected modes such as glue, welded structure, with high costs, can not dismantle, be inconvenient for the maintenance, thereby it connects and seals to use modes such as glue or epoxy in the prior art to have solved, with high costs, dismantle the technical problem of equipment difficulty.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the utility model, and are described in detail, but are not to be construed as limiting the scope of the utility model. It should be noted that it is possible for those skilled in the art to make several variations and modifications without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A pressure sensor, the pressure sensor comprising:
the pressure sensing device comprises a first shell, a second shell and a pressure sensing core;
the pressure sensing core body is arranged in the second shell, a cavity is formed in one side, close to the pressure sensing core body, of the second shell, the pressure sensing core body abuts against an opening of the cavity through the sealing ring, a first sliding groove and a second sliding groove are formed in one side, close to the first shell, of the second shell, and a second clamping support is arranged on the second shell;
the two ends of the first shell are respectively provided with a first clamping component and a second clamping component, the first clamping component comprises a first clamping piece and a first pressing piece connected with the first clamping piece, the second clamping component comprises a second clamping piece and a second pressing piece connected with the second clamping piece, and a first clamping support is arranged on one side, close to the second clamping support, of the first shell;
through will first joint piece slide in the first groove that slides, the second joint piece slide in the second groove that slides, until first card holds in the palm and supports and support in place the second card holds in the palm the back auto-lock, reaches first casing with the auto-lock of second casing, at this moment, first pressure piece with the second pressure piece supports the both sides of pressure sensing core, so that pressure sensing core compresses tightly the sealing washer realizes sealedly.
2. The pressure sensor of claim 1, wherein the first pressing member comprises a first guiding portion, a first pressing portion connected to the first guiding portion, and a first limiting portion connected to the first pressing portion, the thickness of the first guiding portion gradually increases from an end far from the first pressing portion to an end near the first pressing portion, a first inclined slope is formed, the second pressing member comprises a second guiding portion, a second pressing portion connected to the second guiding portion, and a second limiting portion connected to the second pressing portion, and the thickness of the second guiding portion gradually increases from an end far from the second pressing portion to an end near the second pressing portion, a second inclined slope is formed.
3. The pressure sensor of claim 2, wherein the first pressing portion includes a first arcuate portion connected to the first guide portion and a first planar portion connected to the first arcuate portion, the first planar portion being connected to the first stop portion, the second pressing portion includes a second arcuate portion connected to the second guide portion and a second planar portion connected to the second arcuate portion, the second planar portion being connected to the second stop portion.
4. The pressure sensor of claim 2, wherein the first and second limiting portions and the first housing are surrounded to form a dovetail groove, and the second housing is provided with a dovetail block on a side close to the dovetail groove, and the dovetail block is clamped into the dovetail groove, so that the second housing is clamped into the first housing.
5. The pressure sensor of claim 4, wherein the dovetail block is provided with the second clamping support, the thickness of the second clamping support gradually decreases from one side close to the pressure sensing core to one side far away from the pressure sensing core, and the thickness of the first clamping support gradually increases from one side close to the first guiding part to one side far away from the first guiding part, and the first clamping support moves to abut against the side wall of the second clamping support so as to limit the first shell and the second shell.
6. The pressure sensor of claim 2, wherein the pressure sensing core comprises a support plate, a pressure chip and a circuit board, wherein the pressure chip and the circuit board are arranged on the support plate, the support plate is abutted against the sealing ring at one side far away from the pressure chip, and the first abutting part and the second abutting part respectively abut against two sides of the support plate, so that the support plate is pressed against the sealing ring to realize sealing.
7. The pressure sensor of claim 6, wherein the circuit board comprises a first circuit portion and a second circuit portion connected with the first circuit portion, the first circuit portion is attached to the support plate, the second circuit portion is arranged on the second housing, a limiting hole is formed in the middle of the first circuit portion in a penetrating mode, and the pressure chip penetrates through the limiting hole.
8. The pressure sensor of claim 7, wherein the second circuit portion is connected to a metal terminal at a side far from the first circuit portion, and the second housing is provided with a plurality of mounting holes at a side near to the metal terminal, and the metal terminal passes through the mounting holes to be electrically connected to an external device.
9. The pressure sensor of claim 6, wherein the second housing has an annular groove at the interface of the cavity, and the seal ring is clamped in the annular groove and is sealed by compression of the support plate.
10. The pressure sensor of claim 6, wherein the cavity is connected to a transmission pipe on a side away from the support plate, the transmission pipe being disposed in the second housing, the transmission pipe being configured to transmit a medium to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321608456.7U CN220230785U (en) | 2023-06-21 | 2023-06-21 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321608456.7U CN220230785U (en) | 2023-06-21 | 2023-06-21 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220230785U true CN220230785U (en) | 2023-12-22 |
Family
ID=89174977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321608456.7U Active CN220230785U (en) | 2023-06-21 | 2023-06-21 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220230785U (en) |
-
2023
- 2023-06-21 CN CN202321608456.7U patent/CN220230785U/en active Active
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