CN103776583B - Housing and there is the pressure sensing cell of this housing - Google Patents
Housing and there is the pressure sensing cell of this housing Download PDFInfo
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- CN103776583B CN103776583B CN201310511417.XA CN201310511417A CN103776583B CN 103776583 B CN103776583 B CN 103776583B CN 201310511417 A CN201310511417 A CN 201310511417A CN 103776583 B CN103776583 B CN 103776583B
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- 239000007767 bonding agent Substances 0.000 claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000004593 Epoxy Substances 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000004078 waterproofing Methods 0.000 abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 30
- 230000002093 peripheral effect Effects 0.000 description 15
- 239000012530 fluid Substances 0.000 description 12
- 239000000758 substrate Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229920006380 polyphenylene oxide Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Abstract
The invention provides the housing that can improve water proofing property and the pressure sensing cell with this housing.In the container (10) of pressure sensing cell (1), connector portions (30) is formed with the material different from bearing part (12), this connector portions (30) is higher with the water tolerance at the interface of the second bonding agent (52) than bearing part (12) with the water tolerance at the interface of the second bonding agent (52), and the second bonding agent (52) is to cover the outside surface entirety of bearing part (12) and arranging with the mode of the outside surface adjoining position of bearing part (12) of connector portions (30).
Description
Technical field
The present invention relates to housing and there is the pressure sensing cell of this housing, particularly relate to the housing and pressure sensing cell that require water proofing property.
Background technology
In the past, as pressure sensing cell, such as, there is the unit disclosed in patent documentation 1.The pressure transducer 800 as pressure sensing cell recorded in patent documentation 1 possesses as illustrated in fig. 3 as lower house, and this housing has: the bearing part 802 being formed as circular stainless steel; Be formed as roughly cylindric and accommodate the plastic cover 860 of bearing part 802 in the mode blocking one end; Be embedded in the opening 802b of the inner side of bearing part 802 and the fluid inflow pipe 811 fixing by soldering; And to carrying out the bonding agent 872 of bonding silicone-based or polyurethane series between bearing part 802 with cover 860.
In this pressure transducer 800, bonding agent 872 is filled to gap between them in the mode of fixing bearing part 802 and cover 860, make bearing part 802 and cover 860 mutually bonding.In addition, this bonding agent 872 is set to and bearing part 802 close contact, prevents moisture from immersing enclosure interior from the interface of bonding agent 872 and bearing part 802, thus ensure that water proofing property.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2012-68105 publication
But, for such pressure transducer 800, because bearing part 802 is stainless steels, so there is moisture gently immerses above-mentioned interface situation from the end of the bonding agent 872 of the outside surface of bearing part 802, therefore, with regard to water proofing property, also leave some room for improvement.
In addition, except such pressure transducer 800, for require water proofing property and have following form housing for, also identical with above-mentioned pressure transducer 800, exist water proofing property also need improve situation, this housing have this housing certain Part I, adjoin with this Part I setting Part II and contact the bonding agent arranged with Part I.
Summary of the invention
Therefore, the object of the invention is to solve above-mentioned problem.That is, the object of the present invention is to provide the housing that can improve water proofing property and the pressure sensing cell with this housing.
To achieve these goals, invention described in scheme 1 provides as lower house, it has Part I, the Part II of setting is adjoined with this Part I, and to contact with above-mentioned Part I bonding agent is set, the feature of this housing is, above-mentioned Part II is formed with the material different from above-mentioned Part I, the water tolerance at this Part II and the interface of above-mentioned bonding agent is higher than the water tolerance at the interface of above-mentioned Part I and above-mentioned bonding agent, above-mentioned bonding agent is at least to cover the outside surface entirety of above-mentioned Part I and arranging with the mode of the outside surface adjoining position of above-mentioned Part I of above-mentioned Part II.
On the basis of the invention described in scheme 1, the feature of the invention described in scheme 2 is, the material forming above-mentioned Part I is stainless steel or aluminium.
On the basis of the invention described in scheme 1 or 2, the feature of the invention described in scheme 3 is, the material forming above-mentioned Part II is synthetic resin, copper or aldary.
On the basis of invention described any one of scheme 1 ~ 3, the feature of the invention described in scheme 4 is, above-mentioned bonding agent is epoxy bonding agent, urethane adhesive or silicone-based bonding agent.
To achieve these goals, invention described in scheme 5 provides pressure sensing cell, it has container, this container has stream tube-connecting part, adjoins the stream duct member of setting and contact with above-mentioned stream tube-connecting part the bonding agent arranged with above-mentioned stream tube-connecting part, the feature of this pressure sensing cell is, possesses housing according to any one of scheme 1 ~ 4 as said vesse, wherein, above-mentioned stream tube-connecting part is equivalent to above-mentioned Part I, and above-mentioned stream duct member is equivalent to above-mentioned Part II.
Effect of the present invention is as follows.
According to the present invention, Part II is formed with the material different from Part I, the water tolerance at this Part II and the interface of bonding agent is higher than the water tolerance at the interface of Part I and bonding agent, arranging with the mode of the outside surface adjoining position of Part I of bonding agent overall and Part II with the outside surface at least covering Part I.Therefore, the interface of Part I and bonding agent (border) is not made to expose, and the interface of Part II and bonding agent is exposed, and, the water tolerance at these Part II exposed and the interface of bonding agent is higher than the water tolerance at the interface of Part I and bonding agent, thereby, it is possible to improve the water tolerance at the interface of exposing of each parts and bonding agent thus improve water proofing property.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the pressure sensing cell of an embodiment of the invention.
Fig. 2 is the longitudinal section of the structure of the variation of the pressure sensing cell representing Fig. 1.
Fig. 3 is the longitudinal section of pressure sensing cell in the past.
In figure: 1-pressure sensing cell, 10-container (housing), 11-pedestal, 12-bearing part (stream tube-connecting part, Part I), 13-diaphragm, 14-pressure detecting element, 17-pressurized space, 18-pressurization space, 20-electrical connection section, 21-substrate, 22-terminal pin, 23-connector, 24-lead-in wire, 30-connector portions (stream duct member, Part II), 35-fluid ingress pipe (stream duct member, Part II), 40-cover, 47-the first space, 48-second space, 51-the first bonding agent, 52-the second bonding agent (bonding agent).
Embodiment
(the first embodiment)
Below, be described with reference to the pressure sensing cell of Fig. 1 to the first embodiment of the present invention.
Fig. 1 is the longitudinal section of the pressure sensing cell of an embodiment of the invention.In addition, the concept of " up and down " in the following description and corresponding up and down in Fig. 1, it represents the relative position relationship of each parts, does not represent absolute position relationship.
Pressure sensing cell (in figure, being represented by symbol 1) shown in Fig. 1 possesses pedestal 11, bearing part 12, diaphragm 13, pressure detecting element 14, electrical connection section 20, connector portions 30, cover the 40, first bonding agent 51 and the second bonding agent 52.In addition, the container 10 as the profile of pressure sensing cell 1 is formed by bearing part 12, connector portions 30, cover 40 and the second bonding agent 52.
Pedestal 11 is formed as the lid of the convex edge 11b possessing discoideus Base body 11a and vertically erect setting from the circumferential edges of Base body 11a towards Figure below.
At Base body 11a, be formed with the oily filler opening 11c for enclosing oil to pressurized space 17 described later in the mode of this Base body 11a through.This oily filler opening 11c is sealed by spheroid 15 after having filled oil.In addition, at Base body 11a, be formed with the terminal pin extraction hole 11d supplying the terminal pin 22 of electrical connection section 20 described later to pass through in the mode of this Base body 11a through.
Bearing part 12 is formed as having discoideus bearing part main body 12a and erects the disk like of convex edge 12b of setting in the circumferential edges of bearing part main body 12a in the mode left from its center towards oblique upper in figure.The front end of convex edge 12b is formed as the flat condition almost parallel with bearing part main body 12a.Opening 12c is formed at the core of bearing part main body 12a.Pedestal 11 and bearing part 12 are configured to, and the front end of the front end of the convex edge 11b of pedestal 11 and the convex edge 12b of bearing part 12 clips diaphragm 13 described later and overlapping.
Diaphragm 13 is formed as circular film-form, and its peripheral edge portion 13a configures in the mode clamped by the front end of the convex edge 12b of the front end of the convex edge 11b of pedestal 11 and bearing part 12.
For the front end of the convex edge 11b of pedestal 11, the front end of the convex edge 12b of bearing part 12 and the peripheral edge portion 13a of diaphragm 13, their bonding station S is welded to each other by laser bonding etc., thus is mutually in this bonding station S-phase and is integrated and links fixing hermetically.Thus, between pedestal 11 and diaphragm 13, be formed with the pressurized space 17 of enclosing oil, between bearing part 12 and diaphragm 13, be formed with pressurization space 18.
Pedestal 11, bearing part 12 and diaphragm 13 are preferred is that material is formed with stainless steel.Or they part or all also can with such as aluminium (comprising aluminium alloy) for material be formed.
Pressure detecting element 14 is integrated as lower component by semiconductor circuit integrated technology: the diaphragm portion (silicon diaphragm) that (a) back side central portion to silicon substrate etches and formed; (b) electronic circuit portion, this electronic circuit portion has and comprises multiple detecting element portion (pressure drag component) and be formed at the bridge diagram of diaphragm portion, the amplifying circuit processing the output signal of this bridge diagram, straight line correction circuit, temperature adjustmemt circuit and revise data holding circuit etc.The metal terminal portion (pad) of pressure detecting element 14 is connected with terminal pin 22 described later by wire-bonded in pressurized space 17.Pressure detecting element 14 exports the pressure signal corresponding with the compression zone 14a applied pressure formed diaphragm portion.
Pressure detecting element 14 is installed on pedestal 11 with the state be configured in pressurized space 17.Pressure detecting element 14 is electrically connected with substrate 21 by the terminal pin 22 of electrical connection section 20, the terminal pin extraction hole 11d that this terminal pin 22 is formed by the Base body 11a of through pedestal 11 and extending.The terminal pin extraction hole 11d of pedestal 11 is sealed by seal 16, and oil can not be revealed.
Electrical connection section 20 is configured in cover 40 described later, the lead-in wire 24 having substrate 21, electrical connection substrate 21 and the terminal pin 22 of pressure detecting element 14, the connector 23 be connected with substrate 21 and be connected with connector 23.Thus, the pressure signal exported from pressure detecting element 14 passes through terminal pin 22, substrate 21 and connector 23, and exports outside to from lead-in wire 24.
Terminal pin 22 and lead-in wire 24 are in staggered configuration on the direction (in figure left and right directions) that the lead direction (in figure above-below direction) with them is intersected, and the connection of terminal pin 22 and lead-in wire 24 is undertaken by substrate 21.
Connector portions 30 is that material is formed with copper.Or connector portions 30 also can be formed for material with the aldarys such as brass, the synthetic resin identical with cover 40 described later etc.Connector portions 30 is in roughly tubular, and the end being formed as top in its figure periodically undergauge is stepped.Inserted the opening 12c of bearing part 12 by the front end 30a of the end by connector portions 30, the fluid of the inner side of connector portions 30 imports path 32 and is communicated with pressurization space 18.In addition, by the circumferential edges of the front end 30a of the end by the connector portions 30 and opening 12c of bearing part 12 to carry out soldering to the mode sealed between them, and connector portions 30 is fixedly installed in bearing part 12.Connector portions 30 is located at this bearing part 12 in outside surface (surface portion toward the outer side) the outstanding mode from bearing part 12.
Inside the other end of connector portions 30, be provided with and carve female combination threaded portion 31, can be screwed with not shown fluid ingress pipe and be connected.In other words, connector portions 30 forms stream duct member, and bearing part 12 forms the stream tube-connecting part of the connector portions 30 connected as stream duct member.
If the combination of connector portions 30 threaded portion 31 is connected with fluid ingress pipe, then the pressure of fluid imports path 32 by the fluid of connector portions 30, is directed into pressurization space 18 and is passed to diaphragm 13.Diaphragm 13 is very thin, thus can carry out pressure transmission in the mode not producing the pressure loss.The compression zone 14a of pressure detecting element 14 is subject to this pressure, and the electric signal obtained detecting this pressure by pressure drag component in electronic circuit portion processes, and exports to terminal pin 22 as pressure signal.
Cover 40 is such as that material is formed with synthetic resin such as polyphenylene oxide (PPE).Or cover 40 also can with copper or aldary (brass etc.) for material and being formed.With regard to cover 40, in the figure of the connector 23 of collecting electrical connection section 20, the end of top is to surround the mode undergauge of lead-in wire 24, and being formed as path end 41, the end of the Figure below of collecting pedestal 11 and bearing part 12 is formed as internal diameter and increases and the bigger diameter end portion 42 extended with sheath skirt shape.
At the inner peripheral surface of path end 41, be formed throughout the outstanding teat 41a of its complete cycle.This teat 41a plays the function preventing first bonding agent 51 in the first space 47 described later be filled in cover 40 from deviating from.
In the inner circumferential side in bigger diameter end portion 42, be formed with the annular stepped portion 42a of diameter almost identical with the external diameter of pedestal 11.Pedestal 11 is placed in this annular stepped portion 42a, and pedestal 11 is fitted together at the ring-type bight 11e as its external diameter bight and is seated at this annular stepped portion 42a.Thus, the bearing part 12 fixing with pedestal 11 one is configured in the mode of the opening blocking the Figure below in bigger diameter end portion 42.Under this state, cover 40 adjoins with the mode and this bearing part 12 of surrounding the surrounding of bearing part 12 and arranges.In addition, connector portions 30 is fixed on the opening 12c of the middle body being located at bearing part 12 with the state that one end is inserted, and in other words, connector portions 30 is arranged to adjoin across the mode of bearing part 12 and bearing part 12 between cover 40.
Annular stepped portion 42a in the inner circumferential side than bigger diameter end portion 42, closer to the position of the opening of Figure below, is provided with the tubular inner peripheral surface 42b that internal diameter is larger than the external diameter of pedestal 11.Between the outer peripheral face 11f of convex edge 11b and the side face 12d of the convex edge 12b of bearing part 12 of this tubular inner peripheral surface 42b and pedestal 11, throughout complete cycle formed useful in the annular gap 45 of filling for bonding agent described later.Annular gap 45, near the opening of the Figure below in bigger diameter end portion 42, is connected with open space 46 described later, and forms second space 48.
The pedestal 11 that the inner side of cover 40 is accommodated in cover 40 divides, and is formed with the first space 47 from the Base body 11a of pedestal 11 to side, path end 41.In this first space 47, containing electrical connection section 20(is specifically substrate 21, terminal pin 22, connector 23 and lead-in wire 24).
In the first space 47, fill the first bonding agent 51 and make it solidification.First bonding agent 51 use with cover 40, go between 24 the high and such as epoxy bonding agent that elasticity is high of cementability.
First bonding agent 51 is filled in the first space 47 and solidifies, and makes substrate 21, terminal pin 22, connector 23 and lead-in wire 24 become the state of burying underground, thus is sealed in cover 40 by these parts.
Path end 41 is by being formed from bigger diameter end portion 42 undergauge, and path end 41 is formed with teat 41a outstanding in the first space 47 in inner circumferential, plays anticreep effect relative to the first bonding agent 51 as the filling material in the first space 47.Thus, prevent the first bonding agent 51 to peel off from the first space 47 and the situation of deviating to the outside of cover 40, thus lead-in wire 24 can be realized relative to the fixing reliably of cover 40 and further bubble-tightly to guarantee.In addition, at the chimeric annular stepped portion 42a having the bigger diameter end portion 42 of the cover 40 of pedestal 11, if the structure of the bonding pedestal 11 of the first bonding agent 51 and cover 40, then can improve the constant intensity of pedestal 11 further, can impermeability be improved and also can improve the sealing effectiveness that the liquid from outside is immersed.
Near the opening of the Figure below in the bigger diameter end portion 42 of cover 40, be formed with second space 48.This second space 48 comprises annular gap 45 and open space 46 and forms.
Annular gap 45 is the narrower and small annuluses of width, this annular gap 45 as described above the convex edge 11b of pedestal 11 outer peripheral face 11f and be welded in pedestal 11 bearing part 12 convex edge 12b side face 12d and be opposite to these outer peripheral faces 11f and side face 12d bigger diameter end portion 42 tubular inner peripheral surface 42b between formed.
Open space 46 is the spaces be connected with annular gap 45, is the space impaled by following each face: the ring-type lower surface 12e be connected with the side face 12d of the convex edge 12b of bearing part 12; The outside taper side face 12f be connected with this ring-type lower surface 12e; The ring-type lower surface 12g of the bearing part main body 12a of the bearing part 12 be connected with taper side face 12f outside this; The open end side part of the tubular inner peripheral surface 42b in bigger diameter end portion 42 and coupled inclined end face 42c; And the end face 30b of an end of connector portions 30.
The second bonding agent 52 is filled at second space 48.That is, the space being filled with the second bonding agent 52 in Fig. 1 is second space 48.This second bonding agent 52 uses and epoxy bonding agent that elasticity high high with the cementability of the pedestal 11 of stainless steel, bearing part 12, connector portions made of copper 30 and plastic cover 40.In addition, the second bonding agent 52 also can use urethane adhesive or silicone-based bonding agent.
Because connector portions 30 is formed for material with copper (or aldary, synthetic resin), (specifically, moisture immerse to this interface difficulty) is higher so the water tolerance at connector portions 30 and the interface of the second bonding agent 52 of epoxy bonding agent, urethane adhesive or silicone-based bonding agent.In addition, because bearing part 12 is formed for material with stainless steel (or aluminium), so the water tolerance at the interface of bearing part 12 and the second bonding agent 52 is lower than the water tolerance at the interface of connector portions 30 made of copper and the second bonding agent 52.
Second bonding agent 52 is filled in second space 48, thus using across each and cover this mode of each and arrange as follows: (1) side face 12d, ring-type lower surface 12e as the convex edge 12b of the outside surface entirety of the bearing part 12 and ring-type lower surface 12g of outside taper side face 12f and bearing part main body 12a; (2) cover 40 with the outside surface adjoining position of bearing part 12 that is the tubular inner peripheral surface 42b in bigger diameter end portion 42 and inclined end face 42c; (3) connector portions 30 with the outside surface adjoining position of bearing part 12 that is the end face 30b of one end.In other words, the second bonding agent 52 is at least to cover the outside surface entirety of (coated) bearing part 12 and arranging with the mode of the outside surface adjoining position of bearing part 12 of connector portions 30.
And, second bonding agent 52 is filled to second space 48 and solidifies, thus be bonding with the mode sealed between the outer peripheral face 11f of pedestal 11 and the side face 12d of bearing part 12 with the tubular inner peripheral surface 42b in the bigger diameter end portion 42 to cover 40, therefore, it is possible to improve pedestal 11 and bearing part 12 further and cover the constant intensity of 40, the sealing between them.
In addition, because the second bonding agent 52 is overall with the outside surface across bearing part 12, the mode that they cover being arranged with bearing part 12 adjoining position of cover 40 and connector portions 30, so the bearing part 12 of stainless steel and the interface (border) of the second bonding agent 52 can not be exposed, and the interface of the interface of plastic cover 40 and the second bonding agent 52 and connector portions made of copper 30 and the second bonding agent 52 is exposed.Thus, the situation that moisture directly contacts the bearing part 12 of stainless steel and the interface of the second bonding agent 52 is not had.In other words, for the container 10 of pressure sensing cell 1, can't help the water tolerance at the bearing part 12 of stainless steel and the interface of the second bonding agent 52, but decide the water proofing property of its entirety by the water tolerance at the interface of connector portions 30 made of copper and the second bonding agent 52.
Above, as illustrated, the container 10 of the pressure sensing cell 1 of present embodiment has as the bearing part 12 of stream tube-connecting part, to adjoin the connector portions 30 as stream duct member that arranges and contact the second bonding agent 52 arranged with bearing part 12 with bearing part 12.And, connector portions 30 is formed with the material different from bearing part 12, to make the water tolerance at the interface of this connector portions 30 and the second bonding agent 52 higher than the water tolerance at the interface of bearing part 12 and the second bonding agent 52, arranging with the mode of the outside surface adjoining position of bearing part 12 of the second bonding agent 52 overall and connector portions 30 with the outside surface covering bearing part 12.
In addition, the material forming bearing part 12 is stainless steel.
In addition, the material forming connector portions 30 is copper.
In addition, the second bonding agent 5 is epoxy bonding agents.
In addition, the pressure sensing cell 1 of present embodiment possesses above-mentioned container 10.
According to the present embodiment, connector portions 30 is formed with the material different from bearing part 12, to make the water tolerance at the interface of this connector portions 30 and the second bonding agent 52 higher than the water tolerance at the interface of bearing part 12 and the second bonding agent 52, the second bonding agent 52 is arranged in the mode covered the outside surface of bearing part 12 outside surface adjoining position that is overall and connector portions 30 and bearing part 12.Therefore, the interface (border) of bearing part 12 and the second bonding agent 52 is not exposed, and the interface of connector portions 30 and the second bonding agent 52 is exposed, and, the water tolerance at the connector portions 30 that this exposes and the interface of the second bonding agent 52 is higher than the water tolerance at the interface of bearing part 12 and the second bonding agent 52, thereby, it is possible to improve the water tolerance at the interface of exposing of each parts and bonding agent and improve water proofing property.
Above, for the present invention, to be preferred embodiment illustrated, but housing of the present invention and pressure sensing cell are not limited to the structure of above-mentioned embodiment.
Such as, in above-mentioned embodiment, it is the structure that container 10 comprises the connector portions 30 being connected with not shown fluid ingress pipe, but be not limited thereto, such as, also can be as shown in Figure 2, the pressure sensing cell 1A of following structure, that is, replace connector portions 30, using the fluid ingress pipe 35 made as the stream synthetic resin of duct member, copper or aldary (brass etc.) directly welded and installed in the bearing part 12 as stream tube-connecting part.Fig. 2 is the longitudinal section of the structure of the variation of the pressure sensing cell representing Fig. 1.
When this structure, the second bonding agent 52 is using across each and cover this mode of each and arrange as follows: (1) side face 12d, ring-type lower surface 12e as the convex edge 12b of the outside surface entirety of bearing part 12, the ring-type lower surface 12g of outside taper side face 12f and bearing part main body 12a; (2) cover 40 with the outside surface adjoining position of bearing part 12 that is the tubular inner peripheral surface 42b in bigger diameter end portion 42 and inclined end face 42c; (3) fluid ingress pipe 35 with the outside surface adjoining position of bearing part 12 that is the flange shape outer peripheral face 35a of one end.In other words, the second bonding agent 52 is at least to cover the outside surface entirety of (coated) bearing part 12 and arranging with the mode of the outside surface adjoining position of bearing part 12 of fluid ingress pipe 35.Thus, the interface (border) of bearing part 12 and the second bonding agent 52 is not exposed, and the interface of fluid ingress pipe 35 and the second bonding agent 52 is exposed, the effect identical with above-mentioned embodiment can be played.
In addition, in above-mentioned embodiment, be the structure that the structure that is made up of pedestal 11, bearing part 12 and diaphragm 13 and electrical connection section 20 are contained in cover 40, but be not limited thereto.Such as, also can not possess cover 40, and cover above described structure and electrical connection section 20 with single bonding agent.In this situation, with the above described structure (being equivalent to Part I) at least covering the pedestal 11 of each stainless steel, bearing part 12 and diaphragm 13 and formed, overall and connector portions 30(is equivalent to Part II to above-mentioned bonding agent) arrange with the mode of above described structure (specifically for bearing part 12) adjoining position.Certainly electrical connection section 20 is also needed to implement certain waterproof countermeasure.Thus, the above described structure of stainless steel is not exposed with the interface (border) of the above-mentioned bonding agent covering this structure, connector portions 30 is exposed with the interface of above-mentioned bonding agent, thus the effect identical with above-mentioned embodiment can be played.
In addition, in above-mentioned embodiment, the pressure sensing cell 1 that can be applied to pressure transducer, pressure switch etc. is illustrated, but the present invention is not limited to this, also can be used in the device beyond pressure sensing cell.In other words, for the present invention, if there is Part I, adjoin the Part II of setting with this Part I and contact the housing of the bonding agent arranged with Part I and there is the device of this housing, as long as without prejudice to object of the present invention, then can apply.
In addition, above-mentioned embodiment only represents representational mode of the present invention, and the present invention is not limited to above-mentioned embodiment.That is, those skilled in the art are according to existing known knowledge, can implement various distortion without departing from the spirit and scope of the invention.As long as such distortion possesses the structure of housing of the present invention and pressure sensing cell, be certainly also included within scope of the present invention.
Claims (6)
1. a housing, it has: Part I; The Part II of setting is adjoined with this Part I; Cover, to adjoin with above-mentioned Part I in the mode around above-mentioned Part I of surrounding and arranges, and be formed with the first space and second space; Be filled in the first bonding agent in above-mentioned first space; And to be filled in above-mentioned second space and to contact the second bonding agent arranged with above-mentioned Part I, the feature of this housing is,
Above-mentioned Part II is formed with the material different from above-mentioned Part I, and the water tolerance at this Part II and the interface of above-mentioned second bonding agent is higher than the water tolerance at the interface of above-mentioned Part I and above-mentioned second bonding agent,
Above-mentioned second bonding agent is at least to cover the outside surface entirety of above-mentioned Part I and arranging with the mode of the outside surface adjoining position of above-mentioned Part I of above-mentioned Part II.
2. housing according to claim 1, is characterized in that,
The material forming above-mentioned Part I is stainless steel or aluminium.
3. housing according to claim 1 and 2, is characterized in that,
The material forming above-mentioned Part II is synthetic resin, copper or aldary.
4. housing according to claim 1 and 2, is characterized in that,
Above-mentioned first bonding agent and above-mentioned second bonding agent are epoxy bonding agent, urethane adhesive or silicone-based bonding agent.
5. housing according to claim 3, is characterized in that,
Above-mentioned first bonding agent and above-mentioned second bonding agent are epoxy bonding agent, urethane adhesive or silicone-based bonding agent.
6. a pressure sensing cell, it has container, and this container has stream tube-connecting part and adjoins the stream duct member of setting with above-mentioned stream tube-connecting part, and the feature of this pressure sensing cell is,
Possess housing according to any one of Claims 1 to 5 as said vesse, wherein, above-mentioned stream tube-connecting part is equivalent to above-mentioned Part I, and above-mentioned stream duct member is equivalent to above-mentioned Part II.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012235429A JP5651670B2 (en) | 2012-10-25 | 2012-10-25 | Pressure detection unit |
| JP2012-235429 | 2012-10-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103776583A CN103776583A (en) | 2014-05-07 |
| CN103776583B true CN103776583B (en) | 2016-02-10 |
Family
ID=50569092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310511417.XA Active CN103776583B (en) | 2012-10-25 | 2013-10-25 | Housing and there is the pressure sensing cell of this housing |
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| JP6389698B2 (en) * | 2014-08-26 | 2018-09-12 | 株式会社不二工機 | Pressure sensor |
| CN106404271A (en) * | 2015-08-10 | 2017-02-15 | 浙江三花制冷集团有限公司 | Pressure sensor |
| CN106124116A (en) * | 2016-07-27 | 2016-11-16 | 安费诺(常州)连接系统有限公司 | For detecting pressure transducer and the method for opposing liquid freezing and expansion pressure thereof of hydraulic pressure |
| JP6480969B2 (en) * | 2017-03-17 | 2019-03-13 | 株式会社鷺宮製作所 | Pressure sensor |
| JP6527193B2 (en) * | 2017-04-07 | 2019-06-05 | 株式会社鷺宮製作所 | Pressure sensor |
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| CN1185207A (en) * | 1996-04-01 | 1998-06-17 | 罗伯特·博施有限公司 | Pressure sensor and method for producing same |
| CN1284163A (en) * | 1997-12-22 | 2001-02-14 | 罗斯蒙特航空航天公司 | Madia compatible packages for pressure sensing devices |
| JP2008241489A (en) * | 2007-03-28 | 2008-10-09 | Nidec Copal Electronics Corp | Diaphragm type pressure sensor |
| EP1691182B1 (en) * | 2005-02-08 | 2010-06-23 | Jtekt Corporation | Pressure sensor and manufacturing method therefor |
| CN102124313A (en) * | 2008-06-19 | 2011-07-13 | 埃尔特克有限公司 | Pressure sensor device |
| JP2012068105A (en) * | 2010-09-22 | 2012-04-05 | Fuji Koki Corp | Pressure sensor |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185207A (en) * | 1996-04-01 | 1998-06-17 | 罗伯特·博施有限公司 | Pressure sensor and method for producing same |
| CN1284163A (en) * | 1997-12-22 | 2001-02-14 | 罗斯蒙特航空航天公司 | Madia compatible packages for pressure sensing devices |
| EP1691182B1 (en) * | 2005-02-08 | 2010-06-23 | Jtekt Corporation | Pressure sensor and manufacturing method therefor |
| JP2008241489A (en) * | 2007-03-28 | 2008-10-09 | Nidec Copal Electronics Corp | Diaphragm type pressure sensor |
| CN102124313A (en) * | 2008-06-19 | 2011-07-13 | 埃尔特克有限公司 | Pressure sensor device |
| JP2012068105A (en) * | 2010-09-22 | 2012-04-05 | Fuji Koki Corp | Pressure sensor |
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| CN103776583A (en) | 2014-05-07 |
| JP5651670B2 (en) | 2015-01-14 |
| JP2014085266A (en) | 2014-05-12 |
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