CN103998898A - Non-contact rotation angle detection device, manufacturing method therefor and throttle valve control apparatus - Google Patents
Non-contact rotation angle detection device, manufacturing method therefor and throttle valve control apparatus Download PDFInfo
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- CN103998898A CN103998898A CN201280057781.7A CN201280057781A CN103998898A CN 103998898 A CN103998898 A CN 103998898A CN 201280057781 A CN201280057781 A CN 201280057781A CN 103998898 A CN103998898 A CN 103998898A
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- Prior art keywords
- rotational angle
- resin component
- space
- magnetic induction
- resin
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
- F02D11/106—Detection of demand or actuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/105—Details of the valve housing having a throttle position sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/107—Manufacturing or mounting details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1075—Materials, e.g. composites
- F02D9/108—Plastics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
In order to achieve small variations in detection accuracy among individual non-contact rotation angle detection devices even under a temperature environment near -40 degrees, provided are a non-contact rotation angle detection device, a manufacturing method therefor, and a throttle valve control apparatus using the same, the non-contact rotation angle detection device being provided with at least a stator (110), a Hall IC (120A) disposed in a cavity (110S) of the stator (110) and provided with a magneto-sensitive part, a circuit board (130) connected to the Hall IC (120A), a casing (140) provided with a holding part (140H) that holds the stator (110) and a housing part (140S) that communicates with the cavity (110S) and houses the circuit board (130), and a resin member (150A) filled into the cavity (110S) and into the housing part (140S) so as to surround the hall IC (120A); and the circuit board (130), the glass-transition temperature of a resin member (152A) that surrounds at least the magneto-sensitive part in the resin member (150A) being -40 degrees or lower.
Description
Technical field
The present invention relates to non-contact rotational angle pick-up unit and manufacture method thereof and airflow control.
Background technology
In the electronic control type airflow control of the air amount amount of control engine, be provided with the non-contact rotational angle pick-up unit (following, sometimes referred to as " rotational angle detecting sensor ") for detection of the anglec of rotation of throttling valve.In this rotational angle detecting sensor, it is (following that use has the magnetic induction part of magnet sensing part, sometimes referred to as " Hall IC "), and according to the magnetic field producing between pair of magnet, detect the anglec of rotation of the axle shape rotary body that makes throttling valve rotation, wherein, pair of magnet is with respect to the turning axle of this rotary body and be arranged on one end of this rotary body in the opposed mode of the turning axle across rotary body.
In addition, for above-mentioned rotational angle detecting sensor, the technology (with reference to patent documentation 3) of utilizing resin component to come package arrangements to have the technology (with reference to patent documentation 1,2) in the magnet sensing part of Hall IC or the space of Hall IC or encapsulating the terminal group of Hall IC by thermoset resin has been proposed.In the situation that adopt such structure; by the technology of recording in patent documentation 1; can protect magnet sensing part that dewfall and migration (migration) can not occur; and can reduce to put on the stress on magnet sensing part, can prevent or reduce thus the situation that causes sensor characteristic to reduce because of stress.
In addition, by the technology of recording in patent documentation 2, not only can suppress lubricating oil or foreign matter etc. be attached in Hall IC and the terminal of Hall IC between be short-circuited and prevent from causing that because of vibration Hall IC is rocked etc. outside, and, when the distortional stress of the resin producing because of thermal distortion during resin solidification acts in Hall IC, thereby Hall IC self can be out of shape and be absorbed this stress, can suppress thus Hall IC and misplace.
In addition, by the technology of recording in patent documentation 3, the linear expansion coefficient of the internal part encapsulating by thermoset resin can be moved and suppress for minimum, thereby can make Hall IC become stable with respect to the exporting change characteristic of the anglec of rotation of magnet, can suppress thus the accuracy of detection deviation between product.
[formerly technical literature]
[patent documentation]
Patent documentation 1: Japanese communique, No. 2005-106781, JP (the 0005th section, claim 1, instructions)
Patent documentation 2: Japanese communique, No. 4695929 (claim 1, instructions the 0015th, 0099-0101 section etc.) of special permission
Patent documentation 3: No. 2008-64737, Japanese communique, JP (claim 3,4, instructions the 0014th section etc.)
Summary of the invention
In addition, because above-mentioned non-contact rotational angle pick-up unit is required to use in the temperature range of-40 degree～120 degree, thereby the accuracy of detection deviation between each device is little ideal in the gamut of this temperature range.On the other hand, because the output of the Hall IC variation along with temperature changes, thereby carry out output calibration by forming the IC circuit of Hall IC.But resin at low temperatures, especially can be lost flexible and become stone below vitrification point at it.And, when the resin of encapsulation Hall IC or its magnet sensing part is lost flexibility, can apply very strong distortional stress to Hall IC or its magnet sensing part, thereby likely can cause accuracy of detection deviation to become large.And such accuracy of detection deviation is difficult to be inhibited by the output calibration of Hall IC self.In this situation, the yield rate in the time of can causing manufacturing non-contact rotational angle pick-up unit reduces.
The present invention In view of the foregoing completes, and its problem is, even if also little non-contact rotational angle pick-up unit and manufacture method and the airflow control of accuracy of detection deviation between individuality under a kind of temperature environment about-40 degree is provided.
Above-mentioned problem realizes by following the present invention.That is,
Non-contact rotational angle pick-up unit of the present invention is characterised in that at least possess: the stator that is provided with space; Magnetic induction part, it is configured in this space and has magnet sensing part, and for detection of the magnetic flux changing along with the rotation of rotary body; Circuit board, it is electrically connected to this magnetic induction part; Framework, it is provided with and keeps the maintaining part of stator and the incorporating section of taking in circuit board, and this incorporating section is communicated with the space that is maintained at the stator in this maintaining part; And resin component, it is filled in space and incorporating section in the mode that magnetic induction part and circuit board are encased, and in resin component, the vitrification point of the resin component encasing to major general's magnet sensing part is less than or equal to-40 degree.
In one embodiment of non-contact rotational angle pick-up unit of the present invention, preferably, in resin component, the resin component being at least filled in space in the mode that magnet sensing part is encased consists of urethane resin.
In other embodiments of non-contact rotational angle pick-up unit of the present invention, the resin component being preferably filled in space and incorporating section in the mode that magnetic induction part and circuit board are encased is used epoxy resin and urethane resin, and the resin component being at least filled in space in the mode that magnet sensing part is encased consists of urethane resin.
In other embodiments of non-contact rotational angle pick-up unit of the present invention, the resin component being preferably filled in space and incorporating section in the mode that magnetic induction part and circuit board are encased consists of urethane resin.
In other embodiments of non-contact rotational angle pick-up unit of the present invention; preferred magnetic induction part has magnet sensing part and sensor IC is the element body portion being integrally formed; and; in the mode so that magnetic induction part and circuit board are encased, be filled in the resin component in space and incorporating section, the vitrification point of the resin component encasing to major general's element body portion is less than or equal to-40 degree.
The manufacture method of the first non-contact rotational angle pick-up unit of the present invention is characterised in that, at least pass through uncured resin material filling work procedure, magnetic induction part arrangement step and curing process are manufactured non-contact rotational angle pick-up unit of the present invention, wherein, in uncured resin material filling work procedure, possessing the stator that is provided with space, the maintaining part that keeps this stator, and take at least space of framework of incorporating section of circuit board, the vitrification point of filling under solid state is less than or equal to-40 its uncured state resin materials of spending, wherein, this incorporating section is communicated with the space that is maintained at the stator in this maintaining part, in magnetic induction part arrangement step, to there is magnet sensing part and for detection of the magnetic induction part of the magnetic flux changing along with the rotation of rotary body, in the mode of utilizing its uncured state resin material to encase to major general's magnet sensing part, be configured in the space that is filled with its uncured state resin material, in curing process, its uncured state resin material is solidified.
The manufacture method of the second non-contact rotational angle pick-up unit of the present invention is characterised in that, at least through dipping process, magnetic induction part arrangement step and curing process, manufacture non-contact rotational angle pick-up unit of the present invention, wherein, in dipping process, utilize vitrification point under solid state to be less than or equal to its uncured state resin materials of-40 degree, will there is magnet sensing part and encase for detection of at least magnet sensing part of the magnetic induction part of the magnetic flux changing along with the rotation of rotary body; In magnetic induction part arrangement step, the magnetic induction part that magnet sensing part is encased by its uncured state resin material, be configured in possess be provided with space stator, keep the maintaining part of this stator and take at least space of framework of incorporating section of circuit board, wherein, this incorporating section is communicated with the space that is maintained at the stator in this maintaining part; In curing process, its uncured state resin material is solidified.
Airflow control of the present invention is characterised in that, is at least provided with throttle valve body and non-contact rotational angle pick-up unit of the present invention, and wherein, this throttle valve body at least possesses: air intake passage; The rotary body of axle shape, it is set to along radially laterally running through air intake passage; Throttling valve, it is fixed on this rotary body, and is arranged in air intake passage in the mode that can rotate; And pair of magnet, it is arranged on one end of rotary body in the opposed mode of the turning axle across rotary body, and non-contact rotational angle pick-up unit of the present invention is arranged on throttle valve body in the mode between pair of magnet with stator arrangement.
(invention effect)
According to the present invention, even if also little non-contact rotational angle pick-up unit and manufacture method and the airflow control of accuracy of detection deviation between individuality under a kind of temperature environment about-40 degree can be provided.
Accompanying drawing explanation
Fig. 1 means the approximate three-dimensional map of an example of the airflow control of present embodiment.
Fig. 2 means the mode sectional drawing of an example of the non-contact rotational angle pick-up unit of present embodiment.
Fig. 3 means the mode chart of an example of operable magnetic induction part (separate type Hall IC) in the non-contact rotational angle pick-up unit of present embodiment.
Fig. 4 means another routine mode sectional drawing of the non-contact rotational angle pick-up unit of present embodiment.
Fig. 5 is the mode sectional drawing describing for the uncured resin material filling work procedure in the manufacture method of the non-contact rotational angle pick-up unit of first embodiment, wherein, Fig. 5 (A) means the figure that uncured resin material is filled into the state in the space of stator, and Fig. 5 (B) means the figure that uncured resin material is filled in to the state in this space and incorporating section.
Fig. 6 is the mode sectional drawing describing for the magnetic induction part arrangement step in the manufacture method of the non-contact rotational angle pick-up unit of first embodiment, wherein, Fig. 6 (A) means that the major part of the element body portion of Hall element in the space of stator is embedded in the figure of the state in uncured resin material, and Fig. 6 (B) means that in this space and incorporating section Hall element and circuit board are embedded in the figure of the state in uncured resin material.
Fig. 7 is for the mode sectional drawing that the operation of enforcement describes of state shown in the Fig. 6 (A) in the manufacture method of the non-contact rotational angle pick-up unit of first embodiment later.
Fig. 8 is the mode sectional drawing describing for the dipping process in the manufacture method of the non-contact rotational angle pick-up unit of the second present embodiment.
(symbol description)
10 airflow controls
20 throttle valve bodys
22 air intake passages
24 throttle spindles (rotary body)
26 throttling valve
28 magnet
30 gears
100,100A, 100B rotational angle detecting sensor (non-contact rotational angle pick-up unit)
110 stators
110S space
120,120A, 120B Hall IC (magnetic induction part)
122 element body portions (magnet sensing part and sensor IC are the parts that are integrally formed)
124 terminals
126A magnet sensing part
126B sensor IC
126C connecting line
130 circuit boards
140 frameworks
140H maintaining part
140S incorporating section
150,150A, 150B resin component
1 52A, 152B resin component
154A, 154B resin component
200,200A, 200B uncured resin material (its uncured state resin material)
Embodiment
Fig. 1 means the approximate three-dimensional map of an example of the airflow control of present embodiment.In addition, Fig. 2 means the mode sectional drawing of an example of the non-contact rotational angle pick-up unit of present embodiment, the specifically enlarged diagram of the major part of the non-contact rotational angle pick-up unit in airflow control shown in presentation graphs 1.
Airflow control 10 shown in Fig. 1 possesses throttle valve body 20 and non-contact rotational angle pick-up unit (rotational angle detecting sensor 100A (100)).At this, throttle valve body 20 possesses: the air intake passage 22 of hollow cylindrical, be set to along the axle shape rotary body (throttle spindle 24) that radially laterally runs through air intake passage 22, be fixed on throttle spindle 24 and be arranged on the throttling valve 26 in air intake passage 22 and across the turning axle A of throttle spindle 24, in opposed mode, be arranged on pair of magnet 28 on one end of throttle spindle 24 etc. in the mode that can rotate.
In addition, rotational angle detecting sensor 100 is arranged on throttle valve body 20 in the mode that forms the stator 110 of rotational angle detecting sensor 100 and be configured between pair of magnet 28.In addition, in the example shown in Fig. 2, tabular gear 30 is installed on one end of throttle spindle 24, pair of magnet 28 is fixed on the face of opposition side this gear 30, be connected side with throttle spindle 24.
At this, the rotational angle detecting sensor 100A shown in Fig. 2 possesses: stator 110, magnetic induction part (Hall IC 120A (120)), the circuit board 130 being electrically connected to Hall IC 120A, framework 140 and the resin component 150A (150) etc. that are provided with space 110S.Wherein, Hall IC 120A (120) is configured in the 110S of space and has magnet sensing part and the magnetic flux changing for detection of the rotation along with throttle spindle 24; Framework 140 has the maintaining part 140H that keeps stator 110 and the incorporating section 140S that takes in circuit board 130, and this incorporating section 140S is communicated with the space 110S that remains on the stator 110 on maintaining part 140H; Resin component 150A (150) is filled in space 110S and incorporating section 140S in the mode that Hall IC 120 and circuit board 130 are encased.
In addition, framework 140 is by forming such as thermoplastic poly butylene terephthalate resin (PBT), thermoplasticity polyphenylene sulfide (PPS) etc.In addition, in rotational angle detecting sensor 100A, also metal magnetic isolation plate can be installed as required, to cover the surface of the resin component 150A being filled in the 140S of incorporating section.
At this, the Hall IC 120A shown in Fig. 2 has magnet sensing part and sensor IC is the integral type Hall IC of the element body portion 122 being integrally formed, and terminal 124 is installed in element body portion 122.And Hall IC 120A is electrically connected to circuit board 130 via terminal 124.In addition, the Hall IC 120 of using in the rotational angle detecting sensor 100 of present embodiment, also can use magnet sensing part 126A and sensor IC 126B as shown in Figure 3 to divide the separate type Hall IC 120B (120) being arranged, to replace the illustrated Hall IC 120A of Fig. 2.
Hall IC 120B shown in Fig. 3 possesses: magnet sensing part 126A, sensor IC 126B, connect the connecting line 126C of magnet sensing part 126A and sensor IC 126B and be connected to the terminal 124 on sensor IC.At this, the part that the magnet sensing part 126A shown in Fig. 3, sensor IC 126B and connecting line 126C form is the part with the function identical with the element body portion 122 of the Hall IC 120A shown in Fig. 2.
In the airflow control 10 shown in Fig. 1, control flow through air intake passage 22 air amount air capacity throttling valve 26 open or close as follows: first, the control signal being generated according to the amount of treading in of gas pedal (accelerator pedal) by not shown control parts such as control unit of engine is passed to the not shown motor being disposed in throttle valve body 20, thereby is controlled for the driving of motor.Then, via the Poewr transmission mechanism of gear 30 grades, the driving force of this motor is passed to throttle spindle 24, thereby throttling valve 26 is opened or closed.Now, by rotational angle detecting sensor 100, detect switch degree the anglec of rotation using it as throttle spindle 24 of throttling valve 26.
That is,, when pair of magnet 28 is rotated along with the rotation of throttle spindle 24, the direction in the magnetic field intersecting with element body portion 122 changes according to its anglec of rotation.Thus, the output signal of Hall IC 120A changes.And, output this output signal control part in, according to this output signal calculate throttle spindle 24 the anglec of rotation, be the aperture of throttling valve 26.Then, by control part, according to other detection signals such as above-mentioned such detected aperture and engine speed etc., carry out the Correction and Control of the aperture of throttling valve 26.
At this, in the rotational angle detecting sensor 100A shown in Fig. 2, resin component 152A in resin component 150A, that encase to major general's element body portion 122 is used vitrification point to be less than or equal to the resin component of-40 degree.In this situation, the magnet sensing part of a part for composed component main part 122 is less than or equal in fact-40 degree resin component by vitrification point encases.In addition; when replacing the illustrated integral type Hall IC of Fig. 2 120A with the illustrated separate type Hall IC of Fig. 3 120B; as shown in Figure 4, as long as the vitrification point of the resin component 152B encasing to major general's magnet sensing part 126A in resin component 150B (150) is less than or equal to-40 degree.
At this, compare with the rotational angle detecting sensor 100A shown in Fig. 2, except replacing integral type Hall IC 120A with the illustrated separate type Hall IC of Fig. 3 120B, the rotational angle detecting sensor 100B (100) shown in Fig. 4 has the structure identical in fact with the rotational angle detecting sensor 100A shown in Fig. 2.
In this situation, even in the degree left and right, lower limit-40 of the serviceability temperature scope of rotational angle detecting sensor 100, the resin component 152B that magnet sensing part 126A is encased shown in the resin component 152A that element body portion 122 is encased shown in Fig. 2 or Fig. 4 can not lose flexibility yet.Therefore, can to magnet sensing part, not be the element body portion 122 being integrally formed and apply distortional stress because resin component 152A loses flexible, thereby can suppress the accuracy of detection deviation between each individuality of rotational angle detecting sensor 100A.In addition, this point is also same for the rotational angle detecting sensor 100B shown in Fig. 4.And then, the resin component 152A being filled in the 110S of space due to element body portion 122 encases, the resin component 152B that magnet sensing part 126A is filled in the 110S of space encases, thereby can prevent that Hall IC 120A, 120B from misplacing, and can improve vibration resistance.
In addition, about resin component 152A, 152B, as long as vitrification point is less than or equal to-40 degree, just known resin component be can use, urethane resin, silicone resin, aqueous fluorine class elastic body etc. specifically can be enumerated.But, from viewpoints such as practicality or costs, in above-mentioned resin component, most preferably be urethane resin.In addition; as long as the vitrification point of resin component 152A, 152B is less than or equal to-40 degree; its lower limit is not particularly limited; but; from material, obtain the viewpoint that the viewpoint of the practical aspects such as easness or the serviceability temperature of inhibition high temperature side reduce, more than the vitrification point of resin component 152A, 152B is preferably-60 degree.
In addition, resin component 154A in resin component 150A, resin component 152A other parts in addition, both can have been used the resin component identical with resin component 152A, also can use different resin components.When resin component 154A is used the resin component identical with resin component 152A, the manufacturing process that can further simplify rotational angle detecting sensor 100A.On the other hand, when resin component 154A is used the resin component different from resin component 152A, preferably use the outstanding epoxy resin of performance such as hardness, moisture-proof, thermotolerance, resistance to chemical reagents.Thus, can guarantee more reliably that circuit board 130 or Hall IC 120A can not touch moisture, heat, lubricating oil or foreign matter etc., can be from rotational angle detecting sensor 100A outside to circuit board 130 or Hall IC 120A stress application etc. yet.
In addition, be suitable as the common moisture-proof of urethane resin that resin component 152A uses poor, thereby and there is stickability and easily adhere to foreign matter etc., and hardness is low, mechanical endurance is poor.Therefore, whole at resin component 150A, be resin component 152A and resin component 154B forms by urethane resin in the situation that, likely make moisture-proof, foreign matter adhere to or the performance deficiency of the aspect such as mechanical endurance.In addition, as resin component 150A, use two-solution curing type urethane resin, and under atmospheric pressure urethane resin is filled in to space 110S and incorporating section 140S in the situation that, easily residual bubble in urethane resin matrix, follows in this and also can on the surface of urethane resin matrix, produce bubble impression.Therefore, likely damage the outward appearance of rotational angle detecting sensor 100A.But, at resin component 152A, using urethane resin and resin component 154A use epoxy resin in the situation that, raised path between farm fields to suppress the accuracy of detection deviation between each individuality of rotational angle detecting sensor 100A when avoiding above-mentioned each problem.
In addition, content discussed above is also same for resin component 154B in resin component 150B, resin component 152B other parts in addition.In addition, the vitrification point of resin component 154A, 154B is not particularly limited.
At this, be suitable as resin component 152A, the urethane resin that 152B is used can be used commercially available product, for example can enumerate: MU-115A/MU-115B (PELNOX Co., Ltd. system, vitrification point :-50 degree), MU-102A/MU-102B (PELNOX Co., Ltd. system, vitrification point :-55 degree), UE-921A/UE-921B (SANYUREC Co., Ltd. system, vitrification point :-57 degree), SU-1727A/SU-1727B (SANYUREC Co., Ltd. system, vitrification point :-55 degree), UF-1113A/UF-1113B (SANYUREC Co., Ltd. system, vitrification point :-50 degree), SU-3600A/SU-3600B (SANYUREC Co., Ltd. system, vitrification point :-56 degree), SU-3001A/SU-3001B (SANYUREC Co., Ltd. system, vitrification point :-50 degree) etc.
In addition, in above-mentioned cited commercially available product, the moisture-proof of MU-115A/MU-115B etc. are also outstanding, therefore, be not only resin component 152A, 152B, and resin component 154A, 154B also can be used this resin.Therefore,, when resin component 152A, 152B and resin component 154A, 154B are all used the outstanding urethane resin such as above-mentioned moisture-proof, can further simplify manufacturing process.In addition, urethane resin is inferior to epoxy resin aspect hardness, but it is rich flexible.Therefore, even be exposed on that temperature variation significantly waits under environment and while causing framework 140 that thermal expansion/thermal shrinkage occurs at rotational angle detecting sensor 100, resin component 150A, 150B are also out of shape along with the thermal expansion/thermal shrinkage of framework 140, thereby can further be suppressed at reliably between resin component 150A, 150B and framework 140, produce gap.
Then, the manufacture method for the rotational angle detecting sensor 100 of present embodiment describes.Fig. 5～Fig. 7 is the mode sectional drawing that the manufacture method of the rotational angle detecting sensor 100 of first embodiment is described, the figure specifically describing for an example of the manufacture method of the rotational angle detecting sensor I00A shown in Fig. 2.
When manufacturing rotational angle detecting sensor I00A; first implement uncured resin material filling work procedure; in this uncured resin material filling work procedure, by dispenser (dispenser) etc., in the 110S of at least space of framework 140, fill its uncured state resin materials (uncured resin material 200A (200)) that vitrification point under solid state is less than or equal to-40 degree (Fig. 5).
In uncured resin material filling work procedure, both can as shown in Fig. 5 (A), only in the 110S of space, fill uncured resin material 200A, also can as Fig. 5 (B) all fill uncured resin material 200A in the space 110S that is shown in and incorporating section 140S.Before a kind of filling mode (separately filling mode) be suitable for the situation that resin component 152A and resin component 154A are different resin component, rear a kind of filling mode (while filling mode) is suitable for the situation that resin component 152A and resin component 154A are identical resin component.In addition, when uncured resin 200 is two-solution curing type resin material, after being mixed, two liquid fill.
Then, by Hall IC 120A to utilize uncured resin material 200A to be configured in (magnetic induction part arrangement step, Fig. 6) in the space 110S that is filled with uncured resin material 200A to the mode that the element body portion 122 of major general's Hall IC 120A encases.Now, so that separately filling mode is implemented uncured resin material filling work procedure in the situation that, when magnetic induction part arrangement step finishes, as shown in Fig. 6 (A), the major part of the element body portion 122 of Hall IC 120A is embedded in uncured resin material 200A.In addition, in the situation that implementing uncured resin material filling work procedure with while filling mode, when magnetic induction part arrangement step finishes, as shown in Fig. 6 (B), Hall IC 120A and circuit board 130 integral body are embedded in uncured resin material 200A.At this, the Hall IC 120A using in magnetic induction part arrangement step is conventionally preferably used the Hall IC of circuit board 130 is installed as shown in Figure 6 in advance on terminal 124.In this situation, when element body portion 122 is configured in the 110S of space, also circuit board 130 is configured in the 140S of incorporating section.
In addition, when with the rotational angle detecting sensor 100B shown in filling mode shop drawings 4 separately, in magnetic induction part arrangement step, as long as the mode that Hall IC 120B is encased by uncured resin material 200 with its magnet sensing part 126A is configured in the space 110S that is filled with uncured resin material 200A.
Then, implement to make the curing curing process of uncured resin material 200A.Curing now can suitably be selected according to the curing mechanism of used uncured resin material 200A.In curing process, for example when being used thermosetting resin material, implements uncured resin material 200A heat treated, when being used light-cured type resin material, implements uncured resin material 200A that UV irradiates etc.In addition, at uncured resin material 200A, be while answering by chemistry side the two-solution curing type uncured resin material that white hair is cured, as long as placed motionless until curing completing after magnetic induction part arrangement step finishes, also can implement heat treated and solidify accelerating.
At this, in the situation that implementing uncured resin material filling work procedure with while filling mode, after finishing, curing process just can obtain the rotational angle detecting sensor 100A shown in Fig. 2.In this situation, resin component 152A and resin component 154A consist of identical resin component.
On the other hand, so that separately filling mode is implemented uncured resin material filling work procedure in the situation that, after curing process finishes, be implemented in as shown in Figure 7 the material of the uncured resin for the second time filling work procedure of filling uncured resin material 200B (200) in the 140S of incorporating section, then implement the curing process for the second time that uncured resin material 200B is solidified.In addition, the curing of uncured resin material 200B can suitably be selected according to the curing mechanism of used uncured resin material 200B.
Or, also can after finishing, magnetic induction part arrangement step implement as shown in Figure 7 uncured resin material filling work procedure for the second time, then implement to make uncured resin material 200A, 200B curing curing process simultaneously.Thus, can obtain the illustrated rotational angle detecting sensor 100A of Fig. 2.In this situation, resin component 152A normally consists of different resin components from resin component 154A, but also can consist of identical resin component.
In addition, the in the situation that of implementing twice curing process in all process steps, the resin component in Fig. 7, element body portion 122 being encased is curing resin component 152A after having implemented for the first time curing process, the in the situation that of only implementing one-step solidification operation in all process steps, the resin component in Fig. 7, element body portion 122 being encased is uncured resin parts 200A.
Fig. 8 is the mode sectional drawing that the manufacture method for the rotational angle detecting sensor 100 of the second present embodiment describes, the figure specifically another example of the manufacture method of the rotational angle detecting sensor 100A shown in Fig. 2 being described.
When manufacturing rotational angle detecting sensor 100A, first implement dipping process, in this dipping process, by applying uncured resin material 200A in the element body portion 122 at Hall IC 120A or element body portion 122 being immersed in the groove that uncured resin material 200A is housed, thereby utilize uncured resin material 200A that element body portion 122 is encased to (Fig. 8).In addition, the Hall IC 120A using in this dipping process is preferably the Hall IC that circuit board 130 is installed as shown in Figure 8 in advance on terminal 124 conventionally.
Then the Hall IC 120A, element body portion 122 being encased by uncured resin material 200A is configured to (magnetic induction part arrangement step) in the 110S of space.Now, the circuit board 130 being arranged on terminal 124 is configured in the 140S of incorporating section, obtains thus and intermediate product identical shown in Fig. 6 (A).
Then, implement to make the curing curing process of uncured resin material 200A.Then, in the 140S of incorporating section, fill uncured resin material 200B, and then implement curing process for the second time, can obtain rotational angle detecting sensor 100A thus.Or, also can be after having implemented magnetic induction part arrangement step, in the 140S of incorporating section, fill uncured resin material 200B, then implement to make uncured resin material 200A, 200B curing curing process simultaneously, obtain thus rotational angle detecting sensor 100A.
In addition, when the rotational angle detecting sensor 100B shown in shop drawings 4, in dipping process, as long as utilize uncured resin material 200A to encase to the magnet sensing part 126A of major general's Hall IC 120B, the part integral body that also can utilize uncured resin material 200A that magnet sensing part 126A, sensor IC 126B and connecting line 126C are formed encases.During then, with manufacture rotational angle detecting sensor 100A, similarly implement dipping process operation afterwards.
Embodiment
Below, for embodiment and comparative example, the present invention being given the account in greater detail.
(embodiment 1)
Prepare 15 assess sample; these assess sample are the rotational angle detecting sensor 100A shown in Fig. 2; wherein; resin component 152A is used urethane resin (vitrification point :-50 degree, PELNOX Co., Ltd. system, MU-115A/MU-115B), and resin component 154A is used epoxy resin (vitrification point :-32 degree, PELNOX Co., Ltd. system, XM-2437/HY-690).
-evaluation of accuracy of detection deviation-
Then, for each assess sample, measure the output (mV) of Hall IC 120A under the temperature environments of 25 degree and-40 degree, and the relative output X (mV) at-40 degree temperature while obtaining the output of usining at 25 degree temperature as standard value (0mV).Then, obtain each assess sample at-40 degree the maximal value Xmax of relative output X at temperature and the absolute value delta X (mV) of the difference of minimum value Xmin, and using it accuracy of detection deviation as between each assess sample.Its result is shown in table 1.
-evaluation of mechanical endurance (hardness)-
About mechanical endurance, for directly evaluating with the hardness of the resin component 154A of extraneous contact side.Its result is shown in table 1.In addition, except following embodiment 3, hardness is all according to JIS K7215 the value of using A type duroscope to record.
-evaluation of moisture-proof-
About moisture-proof, for directly evaluating with the moisture-proof of the resin component 154A of extraneous contact side.Specifically according to following evaluation criterion for the resin mass identical with resin component 154A under hot and humid environment (temperature: 80 degree, humidity: the state of 95%) placing after 2 months is evaluated.Its result is shown in table 1.
A: with test before compare, outward appearance and hardness do not occur especially significantly to change.
B: with test before compare, there is a little variation in outward appearance and/or hardness.
C: with before test, compare, there is the obviously rotten or hardness of the outward appearance of flow deformation etc. and obviously reduce in resin mass surface.
(embodiment 2)
15 assess sample have been prepared; except resin component 150A (being resin component 152A and resin component 1 54A) is used urethane resin (vitrification point :-50 degree, PELNOX Co., Ltd. system, MU-115A/MU-115B), these assess sample are identical with the assess sample of using in embodiment 1.Then, similarly to Example 1 these assess sample are evaluated.Its result is shown in table 1.
(embodiment 3)
15 assess sample have been prepared; except resin component 150A (being resin component 152A and resin component 154A) is used fluororesin (vitrification point :-70 degree, Shin-Etsu Chemial Co., Ltd's system, SIFEL8370A/SIFEL8370B), these assess sample are identical with the assess sample of using in embodiment 1.Then, except hardness is evaluated, similarly to Example 1 these assess sample are evaluated.Its result is shown in table 1.In addition, about hardness, because resin component 154A is very soft and cannot measure similarly to Example 1 hardness, thereby evaluate according to pen..
(embodiment 4)
15 assess sample have been prepared; except resin component 150A (being resin component 152A and resin component 154A) is used epoxy resin (vitrification point :-67 degree, SANYUREC Co., Ltd. system, NR-200C), these assess sample are identical with the assess sample of using in embodiment 1.Then, similarly to Example 1 these assess sample are evaluated.Its result is shown in table 1.
(comparative example 1)
15 assess sample have been prepared; except resin component 150A (being resin component 152A and resin component 154A) is used epoxy resin (vitrification point :-32 degree, PELNOX Co., Ltd. system, XM-2437/HY-690), these assess sample are identical with the assess sample of using in embodiment 1.Then, similarly to Example 1 these assess sample are evaluated.Its result is shown in table 1.
(comparative example 2)
15 assess sample have been prepared; except resin component 150A (being resin component 152A and resin component 154A) is used urethane resin (vitrification point :-30 degree, PELNOX Co., Ltd. system, MU-204A/MU-204B), these assess sample are identical with the assess sample of using in embodiment 1.Then, except the evaluation of accuracy of detection deviation, similarly to Example 1 these assess sample are evaluated.Its result is shown in table 1.
[table 1]
Claims (8)
1. a non-contact rotational angle pick-up unit, is characterized in that, at least possesses:
Be provided with the stator in space;
Magnetic induction part, it is configured in described space and has magnet sensing part, and described magnetic induction part is for detection of the magnetic flux changing along with the rotation of rotary body;
Circuit board, it is electrically connected to described magnetic induction part;
Framework, it is provided with and keeps the maintaining part of described stator and the incorporating section of taking in described circuit board, and wherein, described incorporating section is communicated with the described space that is maintained at the described stator in described maintaining part; And
Resin component, it is filled in described space and described incorporating section in the mode that described magnetic induction part and described circuit board are encased,
In described resin component, the vitrification point of the resin component encasing to magnet sensing part described in major general is less than or equal to-40 degree.
2. non-contact rotational angle pick-up unit as claimed in claim 1, is characterized in that,
In described resin component, the resin component being at least filled in described space in the mode that described magnet sensing part is encased consists of urethane resin.
3. non-contact rotational angle pick-up unit as claimed in claim 1 or 2, is characterized in that,
The resin component being filled in described space and described incorporating section in the mode that described magnetic induction part and described circuit board are encased is used epoxy resin and urethane resin,
The resin component being at least filled in described space in the mode that described magnet sensing part is encased consists of described urethane resin.
4. non-contact rotational angle pick-up unit as claimed in claim 1 or 2, is characterized in that,
The resin component being filled in described space and described incorporating section in the mode that described magnetic induction part and described circuit board are encased consists of urethane resin.
5. the non-contact rotational angle pick-up unit as described in any one in claim 1～4, is characterized in that,
Described magnetic induction part has described magnet sensing part and sensor IC is the element body portion being integrally formed,
In the mode so that described magnetic induction part and described circuit board are encased, be filled in the resin component in described space and described incorporating section, be less than or equal to-40 degree to the vitrification point of the resin component that described in major general, element body portion encases.
6. a manufacture method for non-contact rotational angle pick-up unit, is characterized in that,
At least through uncured resin material filling work procedure, magnetic induction part arrangement step and curing process, manufacture the non-contact rotational angle pick-up unit described in any one in claim 1～5,
Described uncured resin material filling work procedure: possess be provided with space stator, keep the maintaining part of described stator and take at least described space of framework of incorporating section of circuit board, the vitrification point of filling under solid state is less than or equal to-40 its uncured state resin materials of spending, wherein, described incorporating section is communicated with the described space that is maintained at the described stator in described maintaining part;
Described magnetic induction part arrangement step: will there is magnet sensing part and for detection of the magnetic induction part of the magnetic flux changing along with the rotation of rotary body, in the mode of utilizing described its uncured state resin material to encase to magnet sensing part described in major general, be configured in the described space that is filled with described its uncured state resin material
Described curing process: described its uncured state resin material is solidified.
7. a manufacture method for non-contact rotational angle pick-up unit, is characterized in that,
At least through dipping process, magnetic induction part arrangement step and curing process, manufacture the non-contact rotational angle pick-up unit described in any one in claim 1～5,
Described dipping process: utilize vitrification point under solid state to be less than or equal to its uncured state resin materials of-40 degree, by have magnet sensing part and. at least described magnet sensing part for detection of the magnetic induction part of the magnetic flux changing along with the rotation of rotary body encases,
Described magnetic induction part arrangement step: the magnetic induction part that described magnet sensing part is encased by described its uncured state resin material, be configured in possess be provided with space stator, keep the maintaining part of described stator and take at least described space of framework of incorporating section of circuit board, wherein, described incorporating section is communicated with the described space that is maintained at the described stator in described maintaining part
Described curing process: described its uncured state resin material is solidified.
8. an airflow control, is characterized in that, is at least provided with the non-contact rotational angle pick-up unit described in any one in throttle valve body and claim 1～5,
Described throttle valve body at least possesses:
Air intake passage;
The rotary body of axle shape, it is set to along radially laterally running through described air intake passage;
Throttling valve, it is fixed on described rotary body, and is arranged in described air intake passage in the mode that can rotate; And
Pair of magnet, it is arranged on one end of described rotary body in the opposed mode of the turning axle across described rotary body,
Described non-contact rotational angle pick-up unit is arranged on described throttle valve body in the mode between described pair of magnet with described stator arrangement.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011265802A JP2013117477A (en) | 2011-12-05 | 2011-12-05 | Non-contact type rotation angle detection device, method for manufacturing the same and throttle valve control device |
| JP2011-265802 | 2011-12-05 | ||
| PCT/JP2012/081026 WO2013084802A1 (en) | 2011-12-05 | 2012-11-30 | Non-contact rotation angle detection device, manufacturing method therefor and throttle valve control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103998898A true CN103998898A (en) | 2014-08-20 |
Family
ID=48574171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280057781.7A Pending CN103998898A (en) | 2011-12-05 | 2012-11-30 | Non-contact rotation angle detection device, manufacturing method therefor and throttle valve control apparatus |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2013117477A (en) |
| CN (1) | CN103998898A (en) |
| MX (1) | MX2014006738A (en) |
| WO (1) | WO2013084802A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110665A (en) * | 2015-01-05 | 2017-08-29 | 松下知识产权经营株式会社 | Rotation angle detection apparatus and the rotation angle detecting unit using the rotation angle detection apparatus |
| CN112204356A (en) * | 2018-07-13 | 2021-01-08 | 株式会社三国 | Detection device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2953890A1 (en) * | 2014-07-30 | 2016-02-04 | Orscheln Products L.L.C. | Throttle pedal |
| IT201800006825A1 (en) * | 2018-06-29 | 2019-12-29 | ACTUATOR EQUIPPED WITH AN ELECTROMAGNETIC FIELD SHIELDING DEVICE FOR MAGNETIC OR MAGNETO-RESISTIVE POSITION SENSORS. |
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- 2012-11-30 MX MX2014006738A patent/MX2014006738A/en not_active Application Discontinuation
- 2012-11-30 WO PCT/JP2012/081026 patent/WO2013084802A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013084802A1 (en) | 2013-06-13 |
| JP2013117477A (en) | 2013-06-13 |
| MX2014006738A (en) | 2014-11-25 |
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