WO1997033146A1 - Module capteur de pression - Google Patents
Module capteur de pression Download PDFInfo
- Publication number
- WO1997033146A1 WO1997033146A1 PCT/JP1997/000717 JP9700717W WO9733146A1 WO 1997033146 A1 WO1997033146 A1 WO 1997033146A1 JP 9700717 W JP9700717 W JP 9700717W WO 9733146 A1 WO9733146 A1 WO 9733146A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- annular
- housing
- connector
- annular support
- Prior art date
Links
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims description 42
- 230000002093 peripheral effect Effects 0.000 claims description 31
- 238000012856 packing Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 20
- 230000013011 mating Effects 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 10
- 229920003002 synthetic resin Polymers 0.000 claims description 10
- 239000000057 synthetic resin Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 230000003811 curling process Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009963 fulling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/04—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
- G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
- G01L9/0075—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance using a ceramic diaphragm, e.g. alumina, fused quartz, glass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
Definitions
- the present invention relates to a pressure sensor module including a capacitance type pressure sensing element.
- a pressure sensor module used for a gas pressure detecting device or the like
- a pressure sensor module having a structure in which a pressure sensing element, a circuit board, a part of a connector, and the like are housed in a housing
- the pressure sensing element is a sensor element composed of a capacitance type sensor element.
- opposing electrodes are arranged on opposing surfaces of a body (a diaphragm substrate and a base substrate) such as a pair of ceramic plates, at least one of which is movable or flexible with respect to an applied pressure. It has a structure to detect a change in pressure from a change in capacitance between the opposing electrodes.
- the connector has a structure in which a metal terminal member is fixed to a connector main body formed of an insulating material made of synthetic resin.
- a flange is integrally formed at the lower end of the connector body. I have. Then, with the flange portion laminated on the pressure sensing element via the support ring, the flange portion of the connector body is housed in a housing, and curling processing is performed so that the end portion of the housing wraps the flange portion of the connector body ( Caulking).
- the insulating material forming the flange has a low withstand voltage ⁇ ⁇ Jg.
- the overall thickness or height is increased by the thickness of the support base, and the pressure sensor module is compact. Can not be planned. If the support base is made of metal, static electricity charged to the outside of the module through the support base will enter the circuit board through the support base and generate noise, or in the worst case, destroy the electronic element. In particular, in the latter technique, if the processing accuracy of the supporting base, particularly the processing accuracy of the contact surface with the pressure sensing element, is poor, a point contact or partial contact occurs and a local force is applied to the pressure sensing element. The sensing element may be destroyed.
- An object of the present invention is to provide a pressure sensor module which can suppress a large force or a force applied to a connector, and can reduce the size in the height or thickness direction to achieve compactness. Is to do.
- Another object of the present invention is to provide a pressure sensor module that can suppress a large force from being applied to a connector and that can suppress static electricity from entering a circuit board.
- Still another object of the present invention is to prevent a large force from being applied to the connector and to prevent the pressure sensing element from being broken by applying a local force to the pressure sensing element. It is to provide a pressure sensor module.
- Another object of the present invention is to provide a pressure sensor module that can reduce the possibility of damaging the surface of the joint 1 by curling of the joint.
- Still another object of the present invention is to provide a pressure sensor module that can prevent a crack force from being generated inside a flange portion of a connector body.
- Still another object of the present invention is to provide a pressure sensor module that can easily prevent water from entering the inside of a pressure sensor module from a gap between a coupling portion of a housing and a connector body. is there.
- Another object of the present invention is to provide a pressure sensor module having higher reliability than before. Disclosure of the invention
- a pressure sensor module includes a pressure sensing element, a connector, and a metal housing. And a housing.
- the pressure sensing element is configured such that opposing electrodes are disposed on opposing surfaces of an insulating substrate (diaphragm substrate) on the pressure sensing side and an insulating substrate (base substrate) on the non-pressure sensing side which are arranged to face each other.
- This is a pressure sensing element with a capacitance M that detects changes in pressure from changes in position.
- the connector has a plurality of terminal members to which the terminals of the mating connector are connected, and a connector main body made of an insulating material formed on a base portion of the base for storing the circuit board.
- the present invention in particular, it is formed of a material that is generally higher than the connector main body, and is fitted to the outside of the base of the connector main body so that one end face is outside the base of the connector main body and is on the non-pressure sensing side.
- An annular support that comes into contact with the insulating substrate is used.
- the housing communicates with the pressure sensing element, the base of the connector main body and the annular support, and a housing for communicating a fluid to be measured for applying pressure to the pressure sensing surface of the insulating body on the pressure sensing side.
- the structure shall be provided with a member that engages with the pressure fluid supply path and the annular support ⁇ .
- the end surface surrounding the opening of the substrate storage recess formed in the base of the connector body is brought into contact with the insulating substrate on the non-pressure sensing side.
- the first engagement structure that prevents the connector body from coming out of the connector body in the direction away from the non-pressure sensing side insulator and the first engagement structure that prevents the annular support ⁇ from separating from the non-pressure sensing side insulator ttS body
- the base of the connector body, the annular support: and the engaging portion of the housing are formed so as to form the engaging structure of 2.
- the base of the connector main body is brought into contact with the pressure sensing element to maintain the structure in which the circuit board is surrounded by the board housing recess of the connector.
- an annular support formed of a material that is less likely to deform at a higher pressure than the connector main body is fitted to the connector main body, and one end face of the annular support is brought into contact with the non-pressure sensing side insulating base.
- the connector is fixed to the housing by engaging the annular support ⁇ with the engaging portion of the housing.
- the thickness or height of the entire pressure sensor module can be reduced by the amount of time t which does not use a metal supporting base between the pressure sensing element and the connector as in the related art.
- the annular support ⁇ contacts the pressure sensing element at a distance from the conductive part of the pressure sensing element and the circuit board, It is possible to solve the problem that the static electricity enters the circuit board through the supporting base as in the conventional case.
- the pressure sensing element is supported by the support, it is better to support only the outer peripheral portion of the pressure sensing element with the annular support than to support the non-pressure sensing side insulating base of the pressure sensing element as a whole.
- FIG. 1 is a sectional view showing the structure of a pressure sensor module according to one embodiment of the present invention.
- FIG. 2 is a sectional view of a pressure sensing element used in the pressure sensor module of the embodiment shown in FIG.
- FIG. 3 is an exploded sectional view of the pressure sensor module of the embodiment shown in FIG.
- FIG. 4 is a sectional view showing the structure of another embodiment of the pressure sensor module of the present invention.
- FIG. 5 is a sectional view showing the structure of still another embodiment of the pressure sensor module of the present invention.
- FIG. 6 is a sectional view showing the structure of a pressure sensor module according to still another embodiment of the present invention.
- FIG. 7 is a partially enlarged view of the pressure sensor module shown in FIG.
- FIG. 8 is a sectional view showing the structure of a pressure sensor module according to still another embodiment of the present invention.
- FIG. 9 is a partially enlarged view of the pressure sensor module shown in FIG.
- FIG. 10 is a partially enlarged sectional view of a pressure sensor module according to still another embodiment of the present invention.
- BEST MODE FOR CARRYING OUT THE INVENTION hereinafter, the first example of the present invention will be described in detail with reference to the drawings.
- FIG. 1 is a sectional view of a pressure sensor module according to a first embodiment of the present invention. As shown in FIG. 1, this pressure sensor module has a structure in which a connector assembly 1 is fixed to a pressure sensor assembly 2.
- the connector assembly 1 has a structure in which an annular support 4 is fitted to a connector 3.
- the pressure sensor assembly 2 includes a pressure sensing element 5, a circuit board 6, and a housing 7.
- the connector 3 has a structure in which three terminal members 3b (the other one is not shown) are formed on the connector body 3a.
- the connector main body 3a is composed of a cylindrical body 3c and a terminal member fixing portion 3d to which the terminal members 3b are fixed, and has a higher pressure than the material (aluminum alloy, iron) of the housing 7 described later. It is integrally molded from a synthetic resin (insulating resin material) such as PBT (polybutylene terephthalate), which is easily deformed, and PPS (polyphenylene sulfide). Base of cylinder 3c
- (Housing 7 side part) 3d is formed with a board storage recess 3e surrounding the circuit board 6.
- the end surface 3 f of the connector body 3 a surrounding the opening of the substrate housing recess 3 e is in contact with the surface of the non-pressure sensing side insulating body of the pressure sensing element 5.
- an annular ⁇ portion, ie, a flange portion 3g protruding radially outward is provided on the body.
- One end of each of the terminal members 3b is electrically connected to the circuit board 6, and the other end is connected to a terminal of a mating connector (not shown).
- the annular support 4 has one end face 4a located on the pressure sensing element 5 side and the connector body.
- the annular support 4 is made of a metal material such as an aluminum alloy or an iron alloy that is less likely to deform at a high pressure than the material (PBT) of the connector body 3a. End of annular support 4
- annular support 4 is attached to the connector body 3a by the engagement (first engagement structure) formed by the engagement between the engagement annular recess 4b and the flange 3g.
- Annular support ⁇ : 4 is secured. In this way, it is possible to prevent slipping by engaging only by fitting , So ⁇ becomes easier.
- the ⁇ portion is constituted by the flange portion 3 g, but a plurality of ⁇ portions may project radially.
- the pressure sensing element 5 of the pressure sensor assembly 2 is a known pressure sensing element.
- the base substrate made of a ceramic substrate, that is, the non-pressure sensing side insulation ⁇ ⁇ S body 5a and the pressure sensing side made of a ceramic substrate constituting a flexible diaphragm substrate It has a structure in which it is sealed with an insulating substrate 5b via an annular glass layer 5c.
- Opposing electrodes 5d and 56 are formed on the opposing surfaces of the non-pressure sensing side insulating base 5a and the pressure sensing side insulating base 5b, respectively. These counter electrodes 5 d and 5 e are connected to the circuit pattern of the circuit board 6 by conductive connection means (not shown).
- the pressure sensing element 5 detects a change in pressure from a change in capacitance between the counter electrodes 5 d and 5 e.
- the counter electrode provided on the non-pressure sensing insulating substrate 5a may be composed of two electrodes, a main capacitance electrode and a reference capacitance electrode.
- the counter electrode provided on the pressure sensing side insulating base 5b may be two electrodes opposing the two electrodes of the main capacitance electrode and the reference capacitance electrode. It may be a single electrode facing the electrode.
- the circuit board 6 is disposed on the insulation ttS body 5a on the non-pressure sensing side of the pressure sensing element 5, and the signal conversion circuit 6b and the three connection portions 6 "are mounted on the circuit board, that is, the insulating base 6a.
- the connection portions 6 c have a female terminal structure into which the negative end of the terminal member 3 b of the connector 3 is fitted.
- a circuit pattern may be formed on the outer surface of the functional substrate 5a to perform the same function as the circuit board 6. In this case, a flexible substrate is used to form the non-pressure sensing side insulating base 5a.
- the circuit pattern formed on the outer surface and the terminal members 3b of the connector 3 can be electrically connected.
- the housing 7 has a structure integrally formed with the housing body 7a and the high-pressure fluid supply cylinder 7b, and the housing 7 is formed of a metal such as an aluminum alloy or an iron alloy. I have.
- the outer surface of the housing body 7a is provided with a sticking force.
- the housing body 7a has a substantially cylindrical shape having a bottom wall portion 7a1 and a peripheral wall portion 7a2, and has a storage chamber 7c formed therein.
- the storage chamber 7 c includes a pressure sensing element storage section 7 ⁇ ⁇ ⁇ in which the pressure sensing element 5 is stored, and the pressure sensing element storage section. It has an annular support 4 continuous with 7d, a support housing 7e for housing the base of the circuit board 6 and the connector body 3a.
- the annular support 4 is provided between the pressure sensing element housing 7 d and the support housing 7 e.
- a supporting step 7 f supporting the outer edge of one end face 4 a is formed.
- a rubber O-ring 8a is provided between the insulating body 5b on the pressure sensing side of the pressure sensing element 5 and the bottom surface (bottom wall 7a1) of the pressure sensing element housing 7d.
- a backup ring 8b concentrically arranged outside the O-ring 8a. This backup ring 8b is formed from Teflon (trademark).
- An annular groove for accommodating the O-ring 8a and the backup ring 8b is formed on the JgM portion 7a1 of the housing body 7a. Due to the presence of the O-ring 8a and the backup ring 8b, a chamber force for applying pressure to the pressure sensing side insulating base 5b is formed.
- the wall 7g which forms a part of the peripheral wall 7a2 of the housing body 7a surrounding the support housing 7e extends beyond the end face 4c of the annular support 4 housed in the support housing 7e.
- the extended portion forms a cylindrical member 7 gl.
- the cylindrical engagement ⁇ 57gl is curled so as to wrap the outer edge of the end face 4c of the annular support ⁇ : 4.
- the curled engagement ⁇ 7gl and the end face 4c of the annular support ⁇ 4 The connector assembly 1 is attached to the pressure sensor assembly 2 by the engagement with the second (the second engagement structure), and the annular support ⁇ 4 is prevented from falling out of the housing.
- the high-pressure fluid supply cylinder 7b has a cylindrical shape with a smaller diameter than the housing body 7a, and has a screw portion 7h formed on the outer periphery.
- a high-pressure fluid supply passage 7i is formed inside the high-pressure fluid supply cylinder 7b.
- the high-pressure fluid supply passage 7i is formed so as to communicate with the storage chamber 7c, and is a fluid to be measured composed of a high-pressure fluid that applies pressure to the insulating body 5b on the pressure sensing side of the pressure sensing element 5. Supply.
- the annular support ⁇ 4 formed of a material which is harder to deform at a higher pressure than the connector main body 3a is engaged with the connector main body 3a by the first engagement structure so as to prevent the annular support and the housing from coming off. 7 is engaged with the housing 7 by the second engagement structure, so that the high pressure flow through the high pressure fluid supply path 7 i
- a high pressure is applied to the pressure sensing element 5 by the body, the pressure is transmitted to the annular support 4, and the force is finally received by the engagement ⁇ 7 gl between the end face 4 c of the annular support 4 and the housing 7.
- the force transmitted to the connector body 3a is also received at the end face 4c and the engagement portion 7gl, so that a large force is not applied to the engagement portion between the annular support ⁇ : 4 and the connector body 3a. Absent. For this reason, it is possible to prevent the connector 3 from being disengaged or the connector 3 from being damaged by high pressure, as in the related art.
- the thickness or height of the entire pressure sensor module can be reduced by the amount that the metal support base is not disposed between the connector 3 and the pressure sensing element 5. Moreover, since the base 3 cl of the connector body 3 a surrounds the periphery of the circuit board 6, static electricity does not enter the circuit board 6 through the annular support 4. Further, since the annular support 4 contacts the outer edge of the pressure sensing element 5 and does not contact the center of the pressure sensing element 5, the annular support 4 warps the pressure sensing element 5 (particularly, the non-pressure sensing side insulating base 5a). Even if there is, the pressure sensing element 5 (especially the non-pressure sensing side insulating substrate 5a) is not locally concentrated. Therefore, even if the processing accuracy of the pressure sensing element 5, particularly the insulating base 5 a on the non-pressure sensing side is somewhat poor, the pressure sensing element 5 can be prevented from being damaged.
- the pressure sensor module was assembled as follows. First, as shown in the exploded cross-sectional view of FIG. 3, the annular support ⁇ 4 is engaged with the connector body 3a so that the flange 3g of the connector 3 is engaged with the engagement annular recess 4b of the annular support ⁇ : 4. Make connector assembly 1 by mating. Next, the connector assembly 1 is housed in the housing 7 of the pressure sensor assembly 2 in the direction indicated by arrow A in FIG.
- the one end face 4a of the annular support ⁇ : 4 and the end face 3f of the base 3cl of the connector body 3a abut on the non-pressure sensing side insulation 5a of the pressure sensing element 5 and the connection of the circuit board 6
- the parts 6c and the terminal members 3b of the connector 3 are fitted.
- the engaging portion 7gl of the housing 7 is caulked or curled in the direction shown by the arrow B so as to cover the outer edge of the other end surface 4c of the annular support 4, and the connector assembly 1 is pressure sensor assembly 2 To complete the assembly.
- FIG. 4 is a sectional view showing the structure of another embodiment of the pressure sensor module of the present invention.
- This embodiment is different from the embodiment shown in FIGS. 1 to 3 in that a screw base constitutes a second engagement structure (an engagement structure between the annular support 14 and the housing 17).
- the other points are almost the same as the previous example. Therefore, the same parts as those constituting the example shown in FIGS. 1 to 3 are denoted by reference numerals obtained by adding 10 to the reference numerals shown in FIGS. Omitted.
- a female screw portion 17 j is formed on the inner periphery of the support housing 17 e (peripheral wall portion 17 a 2) of the housing 1 ⁇ , and a male screw is formed on the outer periphery of the annular support ⁇ : 14.
- a screw part 14 e is formed.
- a second engagement structure is formed by screwing the female screw portion 17 j and the male screw portion 14 e, and the connector assembly 11 is attached to the pressure sensor assembly 12.
- the tapered portion 14d has a conical surface shape with its head pressed so that the diameter increases as it goes toward the end surface 14a.
- a conical tapered portion 15 h whose diameter dimension increases toward the pressure sensing side insulating base 15 b are formed.
- Annular support ⁇ When the tapered portion 14 d of 14 and the tapered portion 15 h of the pressure sensing element 15 are aligned and brought into contact, the contact area between the annular support ⁇ 4 and the pressure sensing element 15 is reduced. Since the pressure increases, the stress generated in the pressure sensing element 15 can be reduced.
- the force applied per unit area decreases when the force applied to the pressure sensing element 15 is supported by the annular support iWl4, and the pressure resistance increases.
- the force applied from the pressure sensing element 15 to the annular support ⁇ : 14 acts in a direction perpendicular to the inclined surface of the tapered portion, and this force is applied to the force toward the connector 13 and the annular support ⁇ 14. It is a component of the pushing force.
- the force for shearing the screw portion decreases, and the pressure resistance ⁇ J ⁇ of the screw 15 increases.
- FIG. 5 is a sectional view showing the structure of still another embodiment of the pressure sensor module of the present invention.
- This example differs from the examples shown in FIGS. 1 to 3 in the configuration of the first engagement structure (engagement structure for preventing the connector main body 23a from coming off). The points are almost the same as the previous example. Therefore, in the embodiment shown in FIG. 5, the same parts as those in the examples in FIGS. 1 to 3 are denoted by the same reference numerals as those in FIGS. The description is omitted.
- the mating part of the mating connector of the connector main body 23a (the mating connector mating part) is based on the external dimensions of 23h and the base is 23i.
- the other end face of the annular separation 24 has a force that allows the mating connector fitting portion 23 h to pass through, and the base portion 23 i and the mating connector fitting portion 23
- An engaging portion 24d for engaging with a boundary portion 23j formed between them is provided integrally.
- the connector main body 23 a was fitted into the annular support 24 and the annular support ⁇ 3 ⁇ 4 ⁇ 24 was attached to the connector 23 so as to prevent the connector from coming off by the first engagement structure.
- the outer dimensions of the end of the connector 23 can be reduced. Therefore, the contact area between the annular support 24 and the pressure sensing element 25 can be increased, and the force applied to the connector 23 can be reduced.
- connection between the terminal member of the connector and the connection portion of the circuit board can be performed by various methods.
- the connection portion of the circuit board is formed into a shape having a female terminal structure into which one end of the terminal member is fitted, and the female terminal structure and the terminal member are fitted together to form a terminal member of the connector.
- the connection with the connection portion of the circuit board may be made.
- the connector is brought into contact with the pressure sensing element, the structure surrounding the circuit board with the connector is maintained, and the annular support formed of a material that is harder to generate at a higher pressure than the connector main body is engaged with the connector main body.
- the first engagement structure for preventing the connector from coming off is constituted by the engagement between the connector body and the annular support.
- the first engagement structure is not limited to the structure shown in the above embodiment.
- FIG. 6 is a cross-sectional view of an embodiment using a different configuration as the first engagement structure.
- the same parts as those in the example of H3 ⁇ 4 shown in FIGS. 1 to 3 are denoted by reference numerals obtained by adding 30 to the reference numerals shown in FIG. 1 to FIG. Omitted.
- the difference between this embodiment and the embodiment shown in FIGS. 1 to 3 and the embodiment shown in FIG. 6 is that the base part 37 g 1 provided on the housing and the base part 33 a of the connector main body 33 cl are provided.
- the first engagement structure is constituted by engaging the annular flange portion 33g provided in the first embodiment.
- annular protrusion or flange portion 33 g protruding outward in the radial direction is provided at-" ⁇ .
- annular protrusion or flange portion 33 g protruding outward in the radial direction is provided at-" ⁇ .
- FIG. 3 g is formed so that its thickness becomes thinner toward the outside (as it moves away from the base 33 cl), and is formed on the side not facing the annular support 34 (on the side opposite to the end face 33 f).
- the connector body 3 has an outer end surface 3 3 gl and a frusto-conical tapered surface 3 3 g 2 on the side facing the annular support 3 4, and a cylindrical end surface 3 that shares the center line with the center line of the cylindrical body 3 3 c.
- the flange portion 33g By forming the flange portion 33g in this manner, the mechanical strength of the base portion of the flange portion 33g with respect to the connector body 33a can be increased.
- the flange 3 Even if force is applied to the root of the main body 33a, it is possible to prevent cracks from forming at the root, and the flange 33b of the base 33d of the cylindrical body 33c.
- the lower part of the cylinder is also formed with a cylindrical outer peripheral surface 33 that shares the center line with the center line of the cylindrical body 33 c. In the state, the connector body 3
- the connector body 33a can be firmly fixed in the housing 37 when the curling process is performed, even if the processing accuracy slightly varies.
- the annular support ⁇ * 34 includes a base 33c of the connector body 33a such that one end face 34a is in contact with the pressure sensing element 35 outside the base 33cl of the connector body 33a. 1 are arranged so as to surround the outer peripheral portion.
- an annular fitting recess or annular step portion 34 b into which the flange 33 g of the connector 33 is fitted is formed in the opening on the other end surface 34 c side of the annular support 34.
- an annular fitting recess or annular step portion 34 b into which the flange 33 g of the connector 33 is fitted is formed in the opening on the other end surface 34 c side of the annular support 34.
- an annular fitting recess or annular step portion 34 b into which the flange 33 g of the connector 33 is fitted is formed in the opening on the other end surface 34 c side of the annular support 34.
- the annular step 34b is formed so that a gap K is formed between the annular step 34b and the flange 33g
- the gap K has a shape and dimensions that allow deformation of the flange portion 33 g when a curling force described later is applied by the housing 37.
- the lower part of the annular step 34b of the annular support 34 is opposed to the outer peripheral surface 33h of the cylindrical body 33c.
- a cylindrical inner peripheral surface 34d is formed.
- the cylindrical surface of the flange portion 33 g-between the end surface 33 g3 and the cylindrical end surface 34 b2 of the annular step portion 34 b and the cylindrical surface 33 h of the connector body 33 a and the inner peripheral surface 34 d of the annular support ⁇ 34 It was designed so that the gap between them was 0.1 mm. Also, the angle 01 between the outer peripheral surface 33 h of the connector body 33 a and the tapered surface 33 g2 is set to 150 degrees, and the angle 02 between the inner peripheral surface 34 d of the annular support ⁇ 34 and the tapered surface 34 b 1 is 135 degrees. And the gap K was formed. Further, in this example, the sealing layer 39 is formed by using a sealing agent such as urethane resin or epoxy resin so as to extend from the connection 37 gl to the connector main body 33 a.
- a sealing agent such as urethane resin or epoxy resin
- the engaging portion 37 gl of the housing 37 is engaged with the connector main body 33 a to prevent the connector main body 33 a from coming off
- the engaging portion 37 to be curled is used.
- a flange 33g is provided on the outer periphery of the base 33cl of the connector body 33a, and the engaging portion 37gl of the housing 37 is curled so as to wrap the outer edge of the outer end surface 33gl of the flange 33g. Therefore, the length of the engaging portion 37 gl can be reduced by the extent that the flange portion 33 g projects outside the base portion 33 cl of the connector body 33 a. Therefore, the surface of the engagement portion 37 gl is less likely to be damaged by the curling process. This effect is remarkable especially when the surface of the engaging portion 37 gl is applied with a strong force.
- the connector body 33a is in force contact with the pressure sensing element 35, and the engaging portion 37gl of the housing 37 is also curled on the connector body 33a.
- both the annular support 34 and the connector body 33a share and receive the pressure, and the force and the engaging portion 37gl of the housing 37 are also annularly supported.
- ⁇ * 34 and the connector body 33a are in contact with each other, so the connector body 33a is not subjected to a large force enough to damage the connector body. Therefore, it is possible to prevent the connector 33a from being detached by force or the connector 33a from being damaged by high pressure. This point will be explained in more detail.
- the engagement part 37 gl of the housing 37 is the outer edge of the annular support ⁇ 34 In the connector body 33a, the outer edge of the flange portion 33g is merely wrapped by the engagement portion 37g.1. Therefore, when a high pressure is applied to the pressure sensing element 35, the force applied to the engagement portion 37gl is shared between the annular support ⁇ 34 and the flange portion 33g of the connector body 33a. Not much force is applied to 33 g of the flange. In addition, since the annular support ⁇ : 34 is in contact with the pressure sensing element 35 outside the base 33 cl of the connector body 33 a, the force applied from the pressure sensing element 35 is equal to that of the annular support 34. Since the contact is received by both the connector body 33a and the contact area between the annular support body 34 and the pressure sensing element 35 is increased to some extent, the force applied to the connector body 33a can be reduced. It is.
- a gap K is formed between the annular stepped portion 34b provided on the annular support 34 and the annular flanged portion 33g provided on the connector body 33a.
- a so-called “escape” is provided so that even if force is applied to 3 g, the flange portion is not compressed by 3 g force.
- the gap K is formed to allow deformation of the annular flange portion 33 g when the curling force is applied. Even if a gap K is formed between the flange portion 33g and the annular step portion 34b, there is a possibility that both may partially contact each other due to processing accuracy.
- FIG. 8 is a sectional view showing a structure of still another embodiment of the present invention capable of solving such a problem
- FIG. 9 is an enlarged view of a main part thereof. 8 and 9, the same parts as those in the embodiment shown in FIGS. 6 and 7 are denoted by the same reference numerals as those shown in FIGS. And the description is omitted.
- an annular protrusion or shoulder 43g that surrounds the outer periphery of the base 43cl of the cylindrical body 43c of the connector body 43a and protrudes radially outward is provided on the body. ing. As shown in detail in FIG.
- the shoulder 43 g has a lower end force ⁇ the base 43 of the connector body 43 a so as to come into contact with the non-pressure sensing side insulating base 45 a. It has a shape extending to the lower part of cl, and has an annular outer end face 43 gl on the opposite side to the tip face 43 f. The outer end surface 43gl of the shoulder 43g of the connector main body 43a protrudes beyond the other end surface 44c of the annular support 44 before the curling processing is performed.
- An annular tapered surface 44 b whose diameter increases with distance from the pressure sensing element 45 is formed on the inner peripheral side edge of the other end surface 44 c of the annular support 44. .
- an annular concave portion 44d continuous in the circumferential direction is formed on the outer peripheral surface of the annular support member 44 on the side near the non-pressure sensing side insulating base member 45a.
- the ring-shaped packing 50 is arranged so as to contact the outer surface 43 g 2 of the base (outer surface of the shoulder) and the inner surface 47 g 2 of the engaging portion 47 gl of the housing 47.
- the ring-shaped packing 50 is formed of nitrile rubber, and seals a gap formed between the engagement portion 47gl of the housing 47 and the base of the connector body 43a.
- an auxiliary ring-shaped packing 51 is fitted into the annular recess 44 d of the annular support 44.
- the auxiliary ring-shaped packing 51 is also made of nitrile rubber like the ring-shaped packing 50. This auxiliary ring shape.
- the tucking 51 is disposed between the outer peripheral surface of the annular support 44 and the wall 47 e surrounding the support accommodating portion 47 e of the housing 47, and is not hindered by the ring-shaped packing 50.
- the ring-shaped packing 50 when assembling the pressure sensor module, is made up of the tapered surface 44 b of the annular separation 44 and the outer surface of the base of the connector body 43 a (outer surface of the shoulder) 43 g 2 And the inner surface 47 g 2 of the engaging portion 47 gl of the housing 47 presses and compresses.
- the sealing layer 49 is formed by filling a urethane resin or an epoxy resin across the connector body 43 a and the engaging portion 47 gl of the housing 47. As described above, if the seal layer 49 is formed over the connector body 43 a and the engagement 47 47 of the housing 47, the engagement portion of the housing 47 and the base of the connector body 43 a can be formed. It is possible to more effectively prevent water from entering the pressure sensor module from the gap between them, and to obtain high L and reliability.
- the annular support ⁇ the tapered surface 44 of the 4 4 b, the outer surface of the base of the connector body 43 a (the outer surface of the shoulder) 43 g 2 and the inner surface 4 of the engagement 47 of the housing 47 Ring packing 50 was placed in contact with 7 g 2.
- the seal by the ring-shaped packing may be any as long as it seals a gap formed between the engagement portion 47 gl of the housing 47 and the base of the connector body 43 a. Therefore, for example, a ring-shaped packing may be arranged between the base of the connector main body 43a and the engaging portion 47gl of the housing 47. In this case, an annular concave portion for arranging the ring-shaped packing may be formed at the base of the connector body 43a or the engaging portion 47gl of the housing 47.
- FIG. 10 is a partially enlarged view showing an engagement portion between a connector main body and a housing of a pressure sensor module according to another embodiment of the present invention, which is a modification of the example of FIGS. 8 and 9.
- the same parts as those in the embodiment shown in FIGS. 8 and 9 are denoted by the same reference numerals as those in FIGS. 8 and 9 plus 100. is there.
- the gap formed between the base of the connector main body 144 a and the annular support 144 is sealed by the first ring-shaped packing 150.
- annular flange portion 144 g is formed at the base of the connector body 144 a, and is circumferentially continuous between the annular support ⁇ : 144 and the flange portion 144 g.
- Annular packing fitting space S To form an annular step 144b.
- the first ring-shaped packing 150 is fitted in the packing fitting space S.
- an auxiliary ring-shaped packing 151 which constitutes a second ring-shaped packing, is fitted into the annular recessed portion 144d which is continuous in the circumferential direction of the outer peripheral surface of the annular support ⁇ 144.
- the positioning force of the first ring-shaped packing 150 is easy.
- first ring-shaped packing 150 can be strongly sandwiched between the flange portion 144 and the step portion 144b, there is an advantage that the sealability is enhanced. Unlike the case of forming a seal layer of a synthetic resin, it is not necessary to consider the application work and the curing time, as in the case of forming a seal layer of a synthetic resin. Since the first ring-shaped packing 150 can be strongly sandwiched between 3 g and the step portion 144 b, there is an advantage that the sealing property is improved. Further, a seal portion for preventing water from entering the inside of the pressure sensor module from the gap between the engagement of the housing 147 and the base of the connector body 144a can be easily formed.
- the thickness dimension or height dimension of the whole pressure sensor module can be reduced by L which does not arrange
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/945,847 US5932808A (en) | 1996-03-07 | 1997-03-07 | Pressure sensor module having dual insulating substrates on the pressure sensing and non-pressure sensing sides |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8/50052 | 1996-03-07 | ||
JP5005296A JPH09243493A (ja) | 1996-03-07 | 1996-03-07 | 圧力センサモジュール |
JP31222296A JPH10153512A (ja) | 1996-11-22 | 1996-11-22 | 圧力センサモジュール |
JP8/312222 | 1996-11-22 | ||
JP34755296A JPH10185734A (ja) | 1996-12-26 | 1996-12-26 | 圧力センサモジュール |
JP8/347552 | 1996-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997033146A1 true WO1997033146A1 (fr) | 1997-09-12 |
Family
ID=27293822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/000717 WO1997033146A1 (fr) | 1996-03-07 | 1997-03-07 | Module capteur de pression |
Country Status (3)
Country | Link |
---|---|
US (1) | US5932808A (ja) |
KR (1) | KR19990008150A (ja) |
WO (1) | WO1997033146A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10033997B4 (de) * | 1999-07-16 | 2011-01-27 | DENSO CORPORATION, Kariya-shi | Druckerfassungsvorrichtung und Herstellungsverfahren dafür |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4389326B2 (ja) * | 1999-05-06 | 2009-12-24 | 株式会社デンソー | 圧力センサ |
JP3627589B2 (ja) * | 1999-09-27 | 2005-03-09 | 豊田工機株式会社 | 圧力計 |
JP3873792B2 (ja) * | 2002-03-29 | 2007-01-24 | 株式会社デンソー | 圧力センサ |
FR2867054B1 (fr) | 2004-03-04 | 2006-09-15 | Future Medical System | Systeme d'endoscopie et connecteur a detecteur de pression destine a un tel systeme |
JP2006300774A (ja) * | 2005-04-21 | 2006-11-02 | Denso Corp | ダイヤフラム型圧力検出装置 |
KR101025534B1 (ko) * | 2009-07-08 | 2011-04-04 | 인지컨트롤스 주식회사 | 내연기관용 엔진오일 감지기 |
KR101600089B1 (ko) | 2009-10-14 | 2016-03-07 | 타이코에이엠피 주식회사 | 수직형 압력 센서 |
JP5725353B2 (ja) * | 2011-08-11 | 2015-05-27 | 住友電装株式会社 | コンデンサ付きコネクタ |
KR102000294B1 (ko) * | 2012-09-28 | 2019-07-15 | 타이코에이엠피 주식회사 | 압력센서 |
US9772242B2 (en) * | 2013-12-06 | 2017-09-26 | Nagano Keiki Co., Ltd. | Physical quantity measuring sensor including an O-ring between a cylindrical portion and a cylindrical projection |
JP2015184100A (ja) * | 2014-03-24 | 2015-10-22 | セイコーエプソン株式会社 | 物理量センサー、物理量センサーの製造方法、圧力センサー、高度計、電子機器および移動体 |
JP6283307B2 (ja) * | 2014-12-24 | 2018-02-21 | 長野計器株式会社 | 物理量測定装置 |
US20160209285A1 (en) * | 2015-01-20 | 2016-07-21 | Seiko Epson Corporation | Pressure sensor, method of manufacturing pressure sensor, altimeter, electronic apparatus, and moving object |
JP6299649B2 (ja) * | 2015-03-31 | 2018-03-28 | 住友電装株式会社 | コネクタ |
CN106404271A (zh) * | 2015-08-10 | 2017-02-15 | 浙江三花制冷集团有限公司 | 压力传感器 |
US11153985B2 (en) * | 2017-06-29 | 2021-10-19 | Rosemount Inc. | Modular hybrid circuit packaging |
KR102193669B1 (ko) * | 2018-06-07 | 2020-12-22 | 세메스 주식회사 | 압력 측정 유닛 및 이를 가지는 기판 처리 장치 |
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JPS59500987A (ja) * | 1982-06-03 | 1984-05-31 | カヴリコ コ−ポレ−シヨン | 液体容量型圧力変換器 |
JPS62294930A (ja) * | 1986-06-13 | 1987-12-22 | Nippon Soken Inc | 圧力検出器 |
JPS63113331A (ja) * | 1986-10-31 | 1988-05-18 | Saginomiya Seisakusho Inc | 圧力センサ |
JPH04134044U (ja) * | 1991-05-29 | 1992-12-14 | 株式会社不二工機製作所 | 圧力センサ |
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US5343757A (en) * | 1992-05-21 | 1994-09-06 | Fuji Koki Manufacturing Co., Ltd. | Pressure sensor |
US5329819A (en) * | 1993-05-06 | 1994-07-19 | Kavlico Corporation | Ultra-high pressure transducer |
-
1996
- 1996-03-07 KR KR1019970707675A patent/KR19990008150A/ko not_active Application Discontinuation
-
1997
- 1997-03-07 WO PCT/JP1997/000717 patent/WO1997033146A1/ja not_active Application Discontinuation
- 1997-03-07 US US08/945,847 patent/US5932808A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59500987A (ja) * | 1982-06-03 | 1984-05-31 | カヴリコ コ−ポレ−シヨン | 液体容量型圧力変換器 |
JPS62294930A (ja) * | 1986-06-13 | 1987-12-22 | Nippon Soken Inc | 圧力検出器 |
JPS63113331A (ja) * | 1986-10-31 | 1988-05-18 | Saginomiya Seisakusho Inc | 圧力センサ |
JPH04134044U (ja) * | 1991-05-29 | 1992-12-14 | 株式会社不二工機製作所 | 圧力センサ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10033997B4 (de) * | 1999-07-16 | 2011-01-27 | DENSO CORPORATION, Kariya-shi | Druckerfassungsvorrichtung und Herstellungsverfahren dafür |
Also Published As
Publication number | Publication date |
---|---|
KR19990008150A (ko) | 1999-01-25 |
US5932808A (en) | 1999-08-03 |
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