JP2018077142A - Dew condensation measure structure in sensor - Google Patents

Dew condensation measure structure in sensor Download PDF

Info

Publication number
JP2018077142A
JP2018077142A JP2016219232A JP2016219232A JP2018077142A JP 2018077142 A JP2018077142 A JP 2018077142A JP 2016219232 A JP2016219232 A JP 2016219232A JP 2016219232 A JP2016219232 A JP 2016219232A JP 2018077142 A JP2018077142 A JP 2018077142A
Authority
JP
Japan
Prior art keywords
terminals
terminal
exposed
sensor
dew condensation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2016219232A
Other languages
Japanese (ja)
Other versions
JP6758763B2 (en
Inventor
祐輔 佐藤
Yusuke Sato
祐輔 佐藤
伸文 山根
Nobufumi Yamane
伸文 山根
石井 繁
Shigeru Ishii
繁 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JATCO Ltd
Original Assignee
JATCO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JATCO Ltd filed Critical JATCO Ltd
Priority to JP2016219232A priority Critical patent/JP6758763B2/en
Priority to KR1020170140839A priority patent/KR20180052087A/en
Priority to CN201711068994.0A priority patent/CN108062967B/en
Publication of JP2018077142A publication Critical patent/JP2018077142A/en
Application granted granted Critical
Publication of JP6758763B2 publication Critical patent/JP6758763B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00Details of instruments
    • G01P1/02Housings
    • G01P1/026Housings for speed measuring devices, e.g. pulse generator
    • GPHYSICS
    • G12INSTRUMENT DETAILS
    • G12BCONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B9/00Housing or supporting of instruments or other apparatus
    • G12B9/02Casings; Housings; Cabinets
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42Devices characterised by the use of electric or magnetic means
    • G01P3/44Devices characterised by the use of electric or magnetic means for measuring angular speed

Abstract

PROBLEM TO BE SOLVED: To prevent short circuit between terminals due to dew condensation.SOLUTION: There is provided a dew condensation measure structure for a rotation sensor 1 comprising: a main body part 3 including a housing space S for a sensor element 2; a plurality of metallic terminals 7 (7a-7c) including a region between one end part 71 and the other end part 72, embedded in the main body part 3; and a connector part 55 formed by exposing the one end part 71 of each of the terminals 7 (7a-7c) to the outside. An exposure hole 531 for exposing the terminals 7 (7a 7c) in the housing space S is provided in a region of a support part 53 of the main body part 3 where each of the terminals 7 (7a-7c) is embedded. At least one terminal 7a of the plurality of terminals 7 (7a-7c) is exposed through the exposure hole 531, and the other terminals 7b, 7c adjacent to the exposed terminal 7a are coated by a waterproof coating film.SELECTED DRAWING: Figure 1

Description

本発明は、センサにおける結露対策構造に関する。   The present invention relates to a dew condensation countermeasure structure in a sensor.

特許文献1には、回転速度の検出に用いられる電磁センサが開示されている。   Patent Document 1 discloses an electromagnetic sensor used for detecting a rotational speed.

特開平08−334524号公報JP 08-334524 A

図3は、従来例に係る回転センサ100を説明する図であり、(a)は、回転センサ100を端子140aに沿って切断した断面図であり、(b)は、(a)におけるA-A断面図であり、(c)は、(b)におけるB−B断面図である。   3A and 3B are diagrams for explaining a rotation sensor 100 according to a conventional example. FIG. 3A is a cross-sectional view of the rotation sensor 100 cut along a terminal 140a. FIG. It is A sectional drawing, (c) is BB sectional drawing in (b).

図3に示すように、例えば車両用の自動変速機に用いられるセンサには、ギヤなどの回転を検出する回転センサ100がある。
この回転センサ100の本体部110は、有底筒状のケース部120と、ケース部120の開口を封止するカバー部130と、を組み付けて形成されており、本体部110の内部に、センサ素子2の収容空間Sが形成されている。
As shown in FIG. 3, for example, a sensor used in an automatic transmission for a vehicle includes a rotation sensor 100 that detects rotation of a gear or the like.
A main body 110 of the rotation sensor 100 is formed by assembling a bottomed cylindrical case part 120 and a cover part 130 that seals an opening of the case part 120. A housing space S for the element 2 is formed.

この回転センサ100のカバー部130は、外部のハーネス(図示せず)が接続されるコネクタ部135と、このコネクタ部135を支持する基部131と、ケース部120の開口120aに挿入される挿入部132を有しており、この挿入部132の先端に、基板6の支持部133が設けられている。   The cover part 130 of the rotation sensor 100 includes a connector part 135 to which an external harness (not shown) is connected, a base part 131 that supports the connector part 135, and an insertion part that is inserted into the opening 120a of the case part 120. 132, and a support portion 133 of the substrate 6 is provided at the distal end of the insertion portion 132.

カバー部130には、金属製の端子140(140a〜140c)が埋め込まれており、これら端子140(140a〜140c)の一端部141と他端部142は、コネクタ部135内と、ケース部120の収容空間S内で、それぞれ露出している。
そして、収容空間S内において、各端子140(140a〜140c)の他端部142は、支持部133に付設された基板6に半田付けされている。
Metal terminals 140 (140a to 140c) are embedded in the cover part 130, and one end part 141 and the other end part 142 of these terminals 140 (140a to 140c) are provided in the connector part 135 and the case part 120. Each of the housing spaces S is exposed.
In the accommodation space S, the other end 142 of each terminal 140 (140a to 140c) is soldered to the substrate 6 attached to the support 133.

ここで、端子140(140a〜140c)の一端部141は、変速機ケース90の外部に位置しており、変速機ケース90の外部環境の温度が低い場合には、コネクタ部135側の一端部141が、熱伝導により冷やされて低温になることがある。
そうすると、変速機ケース90内に位置する他端部142まで熱が伝わって、端子140(140a〜140c)の他端部142側もまた低温になる場合がある。
Here, the one end portion 141 of the terminal 140 (140a to 140c) is located outside the transmission case 90, and when the temperature of the external environment of the transmission case 90 is low, one end portion on the connector portion 135 side. 141 may be cooled by heat conduction to become a low temperature.
If it does so, heat will be transmitted to the other end part 142 located in the transmission case 90, and the other end part 142 side of the terminal 140 (140a-140c) may also become low temperature.

ここで、端子140(140a〜140c)の一端部141と他端部142の間の領域の総てが、カバー部130の内部に埋め込まれていると、端子140(140a〜140c)の他端部142が、一端部141側から伝わった熱で冷やされてしまう。
そうすると、ケース部120の収容空間S内の空気が、低温になった他端部142と、基板6との接続部に結露Wが生じてしまう。
Here, if the entire region between the one end portion 141 and the other end portion 142 of the terminal 140 (140a to 140c) is embedded in the cover portion 130, the other end of the terminal 140 (140a to 140c). The portion 142 is cooled by the heat transmitted from the one end portion 141 side.
If it does so, dew W will arise in the connection part of the other end part 142 where the air in the storage space S of the case part 120 became low temperature, and the board | substrate 6. FIG.

そのため、従来の回転センサ100では、端子140(140a〜140c)を、収容空間S内に露出させる露出穴134が支持部133に設けられており、基板6ではなく露出穴134内で結露Wを生じさせるようにしたものがある。   Therefore, in the conventional rotation sensor 100, the support part 133 is provided with an exposure hole 134 that exposes the terminals 140 (140 a to 140 c) in the accommodation space S, and condensation W is generated not in the substrate 6 but in the exposure hole 134. There is something to be generated.

しかし、1つの露出穴134に複数の端子140(140a〜140c)が露出していると、端子140(140a〜140c)同士が結露Wを介して短絡して、端子140(140a〜140c)に電蝕が生じることがあり、電蝕の対策が求められている。   However, if a plurality of terminals 140 (140a to 140c) are exposed in one exposure hole 134, the terminals 140 (140a to 140c) are short-circuited through the dew condensation W, and are connected to the terminals 140 (140a to 140c). Electric corrosion may occur, and countermeasures against electric corrosion are required.

本発明は、
センサ素子の収容空間を内部に有する本体部と、
一端部と他端部との間の領域が前記本体部に埋め込まれた複数の端子と、
前記端子各々の一端部を外部に向けて露出させたコネクタ部と、を有し、
前記本体部における前記端子の各々が埋め込まれた領域に、前記端子を前記収容空間に露出させる露出穴が設けられたセンサにおける結露対策構造であって、
前記複数の端子のうちの少なくとも一つを、前記露出穴で露出させると共に、露出させた端子に隣接する他の端子を防水被膜で被覆した構成とした。
The present invention
A main body having a housing space for the sensor element therein;
A plurality of terminals in which a region between one end and the other end is embedded in the main body;
A connector part that exposes one end part of each of the terminals toward the outside, and
In the region where each of the terminals in the main body is embedded, a dew condensation countermeasure structure in a sensor provided with an exposure hole that exposes the terminal to the accommodation space,
At least one of the plurality of terminals is exposed through the exposed hole, and another terminal adjacent to the exposed terminal is covered with a waterproof coating.

本発明によれば、結露による端子同士の短絡が阻止されて、端子の電蝕が防止される。   According to the present invention, short-circuiting between terminals due to condensation is prevented, and electrolytic corrosion of the terminals is prevented.

実施の形態にかかる回転センサを説明する図である。It is a figure explaining the rotation sensor concerning an embodiment. 実施の形態にかかる回転センサを説明する図である。It is a figure explaining the rotation sensor concerning an embodiment. 従来例にかかる回転センサを説明する図である。It is a figure explaining the rotation sensor concerning a prior art example.

以下、本発明の実施の形態を、自動変速機の変速機ケース90に取り付けられてギヤGの回転を検出する回転センサ1の場合を例に挙げて説明する。
図1は、回転センサ1を説明する断面図であり、(a)は、端子7aに沿って回転センサ1を切断した断面図であり、(b)は、(a)におけるA−A断面図であり、(c)は、(a)におけるB−B断面図である。なお、図1の(a)、(b)では、ギヤGを仮想線で示している。
図2は、回転センサ1の要部を説明する図であり、(a)は、露出穴531周りの拡大図であり、(b)は、(a)におけるA−A断面図であり、(c)、(d)は、変形例にかかる結露対策構造を説明する図である。
なお、図2の(a)では、端子7aにおける露出領域73の部分に、端子7aを示すハッチングとは異なるハッチングを付している。
Hereinafter, an embodiment of the present invention will be described by taking as an example the case of a rotation sensor 1 that is attached to a transmission case 90 of an automatic transmission and detects the rotation of a gear G.
1A and 1B are cross-sectional views illustrating the rotation sensor 1, wherein FIG. 1A is a cross-sectional view of the rotation sensor 1 cut along a terminal 7a, and FIG. 1B is a cross-sectional view taken along line AA in FIG. (C) is a BB sectional view in (a). In FIGS. 1A and 1B, the gear G is indicated by a virtual line.
2A and 2B are views for explaining a main part of the rotation sensor 1. FIG. 2A is an enlarged view around the exposure hole 531. FIG. 2B is a cross-sectional view taken along line AA in FIG. (c), (d) is a figure explaining the dew condensation countermeasure structure concerning a modification.
In FIG. 2A, the exposed region 73 in the terminal 7a is hatched differently from the hatching that indicates the terminal 7a.

回転センサ1は、センサ素子2の収容空間Sが内部に形成された本体部3を有しており、この本体部3は、有底円筒形状のケース部4と、ケース部4の開口41aを封止するカバー部5とを組み付けて形成される。   The rotation sensor 1 has a main body portion 3 in which a housing space S for the sensor element 2 is formed. The main body portion 3 includes a bottomed cylindrical case portion 4 and an opening 41 a of the case portion 4. It is formed by assembling the cover portion 5 to be sealed.

ケース部4は、筒状の周壁部41と、周壁部41の一端を封止する底壁部42と、を有しており、周壁部41と底壁部42は、樹脂材料(例えば、ナイロン)で一体に形成されている。   The case part 4 has a cylindrical peripheral wall part 41 and a bottom wall part 42 that seals one end of the peripheral wall part 41. The peripheral wall part 41 and the bottom wall part 42 are made of a resin material (for example, nylon). ).

ケース部4の底壁部42側は、回転センサ1を変速機ケース90に取り付ける際に、変速機ケース90の挿入孔91に挿入される。そして、回転センサ1が変速機ケース90に取り付けられると、ケース部4の底壁部42が、回転の検出対象物であるギヤGの近傍で、ギヤGに対向配置される。   The bottom wall portion 42 side of the case portion 4 is inserted into the insertion hole 91 of the transmission case 90 when the rotation sensor 1 is attached to the transmission case 90. When the rotation sensor 1 is attached to the transmission case 90, the bottom wall portion 42 of the case portion 4 is disposed opposite to the gear G in the vicinity of the gear G that is a rotation detection target.

また、周壁部41の開口41a側の外周には、シールリング45が外嵌して取り付けられており、このシールリング45は、回転センサ1を変速機ケース90に取り付けた際に、挿入孔91の内周に圧接して、周壁部41の外周と挿入孔91の内周との隙間を封止するようになっている。   Further, a seal ring 45 is fitted on the outer periphery of the peripheral wall 41 on the opening 41a side, and the seal ring 45 is inserted into the insertion hole 91 when the rotation sensor 1 is attached to the transmission case 90. The gap between the outer periphery of the peripheral wall portion 41 and the inner periphery of the insertion hole 91 is sealed.

ケース部4の開口41aには、カバー部5の基部51から延びる嵌合部52が内嵌しており、ケース部4の開口41aが嵌合部52により封止されている。
ケース部4では、この嵌合部52と、底壁部42と、周壁部41で囲まれた空間が、センサ素子2の収容空間Sとなっており、この収容空間Sでは、センサ素子2が搭載された基板6が、嵌合部52に付設された支持部53で支持されている。
A fitting portion 52 extending from the base portion 51 of the cover portion 5 is fitted into the opening 41 a of the case portion 4, and the opening 41 a of the case portion 4 is sealed by the fitting portion 52.
In the case portion 4, a space surrounded by the fitting portion 52, the bottom wall portion 42, and the peripheral wall portion 41 is a housing space S for the sensor element 2, and in the housing space S, the sensor element 2 is The mounted substrate 6 is supported by a support portion 53 attached to the fitting portion 52.

嵌合部52における支持部53の反対側には、変速機ケース90の挿入孔91よりも外径が大きい基部51が位置しており、この基部51には、連結部54とコネクタ部55とが設けられている。   A base portion 51 having an outer diameter larger than the insertion hole 91 of the transmission case 90 is located on the opposite side of the support portion 53 in the fitting portion 52, and the base portion 51 includes a connecting portion 54, a connector portion 55, and the like. Is provided.

実施の形態では、ケース部4を構成する基部51と、嵌合部52と、支持部53と、連結部54と、コネクタ部55とが、樹脂材料(例えば、ナイロン)で一体に形成されている。   In the embodiment, the base portion 51, the fitting portion 52, the support portion 53, the connecting portion 54, and the connector portion 55 constituting the case portion 4 are integrally formed of a resin material (for example, nylon). Yes.

連結部54は、基部51の外周から外方に延出して設けられており、この連結部54の先端側には、ボルトBを挿通させる挿通孔541が、連結部54を厚み方向に貫通して設けられている。
変速機ケース90では、挿通孔541に対向する位置にボルト孔92が設けられており、挿通孔541を挿通させたボルトBを、ボルト孔92に螺入することで、回転センサ1が変速機ケース90に固定されている。
The connecting portion 54 extends outward from the outer periphery of the base portion 51, and an insertion hole 541 through which the bolt B is inserted penetrates the connecting portion 54 in the thickness direction at the distal end side of the connecting portion 54. Is provided.
In the transmission case 90, a bolt hole 92 is provided at a position facing the insertion hole 541, and the bolt B inserted through the insertion hole 541 is screwed into the bolt hole 92, so that the rotation sensor 1 is connected to the transmission. It is fixed to the case 90.

コネクタ部55は、基部51の外周から外方に延出して設けられており、図1の(a)の場合には、連結部54から離れる方向に延出している。
このコネクタ部55では、外部に開口する周壁部551の内側で、複数の金属製の端子7(7a〜7c)の一端部71が、外部に向けて露出している。
The connector portion 55 is provided to extend outward from the outer periphery of the base portion 51, and extends in a direction away from the connecting portion 54 in the case of FIG.
In the connector portion 55, one end portions 71 of the plurality of metal terminals 7 (7a to 7c) are exposed to the outside inside the peripheral wall portion 551 that opens to the outside.

これら複数の端子7(7a〜7c)は、カバー部5の基部51内で屈曲したのち、嵌合部52と支持部53の内部を、前記した収容空間Sに向けて直線状に延びている。
端子7(7a〜7c)の他端部72側は、嵌合部52の先の支持部53で再び屈曲して、他端部72を、支持部53における基板6との対向面から突出させている。
The plurality of terminals 7 (7a to 7c) are bent in the base portion 51 of the cover portion 5, and then extend linearly inside the fitting portion 52 and the support portion 53 toward the accommodation space S described above. .
The other end portion 72 side of the terminal 7 (7a to 7c) is bent again at the support portion 53 at the end of the fitting portion 52 so that the other end portion 72 protrudes from the surface of the support portion 53 facing the substrate 6. ing.

支持部53から突出する端子7(7a〜7c)の他端部72は、基板6を貫通して、基板6の裏面に半田付けされている。
この状態で、基板6は、支持部53で支持されていると共に、センサ素子2を、底壁部42の近傍に位置させている。
The other end 72 of the terminal 7 (7a to 7c) protruding from the support portion 53 penetrates the substrate 6 and is soldered to the back surface of the substrate 6.
In this state, the substrate 6 is supported by the support portion 53 and the sensor element 2 is positioned in the vicinity of the bottom wall portion 42.

端子7(7a〜7c)は、一端部71と他端部72の間の領域が、カバー部5内に埋め込まれており、これら端子7(7a〜7c)は、カバー部5を樹脂成型する際に、インサート成型によりカバー部5と一体に形成されるようになっている。   As for the terminal 7 (7a-7c), the area | region between the one end part 71 and the other end part 72 is embedded in the cover part 5, and these terminals 7 (7a-7c) resin-mold the cover part 5. At this time, it is formed integrally with the cover portion 5 by insert molding.

支持部53には、端子7aを収容空間Sに露出させるための露出穴531が設けられている。
実施の形態では、合計3本の端子7(グランド端子、電源端子、出力端子)が、カバー部5に埋め込まれている。そして、これら3本の端子のうちのグランド端子(端子7a)のみが収容空間Sに露出すると共に、残りの端子(端子7b、7c)が樹脂材料で被覆されたままとなるように、露出穴531の位置と大きさが決定されている(図2の(a)参照)。
The support portion 53 is provided with an exposure hole 531 for exposing the terminal 7a to the accommodation space S.
In the embodiment, a total of three terminals 7 (a ground terminal, a power supply terminal, and an output terminal) are embedded in the cover portion 5. Of these three terminals, only the ground terminal (terminal 7a) is exposed in the accommodation space S, and the remaining terminals (terminals 7b and 7c) are still covered with the resin material. The position and size of 531 are determined (see FIG. 2A).

そのため、他の端子7b、7c(電源端子、出力端子)は、他端部72のみが収容空間Sに露出しており、一端部71と他端部72との間の領域は、収容空間Sに露出しないようになっている。   For this reason, the other terminals 7b and 7c (power supply terminals and output terminals) have only the other end 72 exposed in the accommodation space S, and the area between the one end 71 and the other end 72 is the accommodation space S. It is designed not to be exposed.

かかる構成の回転センサ1での作用を説明する。
端子7(7a〜7c)の一端部71は、変速機ケース90の外部に位置しており、他端部72は、ケース部4の収容空間S内に位置している。
収容空間Sが内部に形成されたケース部4は、変速機ケース90の内部に位置しており、変速機ケース90の外部よりも温度が高い環境下に位置している。
The operation of the rotation sensor 1 having such a configuration will be described.
One end 71 of the terminal 7 (7 a to 7 c) is located outside the transmission case 90, and the other end 72 is located in the accommodation space S of the case portion 4.
The case portion 4 in which the accommodation space S is formed is located inside the transmission case 90 and is located in an environment where the temperature is higher than the outside of the transmission case 90.

ここで、変速機ケース90の外部環境の温度が低いために、端子7の一端部71が冷やされた場合には、端子7の他端部72のほうが一端部71よりも温度が高いので、熱が一端部71側から他端部72側に伝わって、他端部72もまた冷やされることになる。   Here, since the temperature of the external environment of the transmission case 90 is low, when the one end portion 71 of the terminal 7 is cooled, the other end portion 72 of the terminal 7 is higher in temperature than the one end portion 71. Heat is transferred from the one end portion 71 side to the other end portion 72 side, and the other end portion 72 is also cooled.

ここで、一端部71を外部に露出させた端子7a(グランド端子)は、収容空間Sに露出させた他端部72よりも一端部71側の領域(露出領域73)が、露出穴531を介して収容空間Sに露出している。
そのため、外気で冷やされた一端部71から他端部72に向けて熱が伝わる過程で、他端部72よりも先に露出穴531内に位置する露出領域73が冷やされることになる。
Here, the terminal 7a (ground terminal) with the one end portion 71 exposed to the outside has a region (exposed region 73) closer to the one end portion 71 than the other end portion 72 exposed to the accommodation space S. Through the housing space S.
Therefore, in the process in which heat is transferred from the one end portion 71 cooled by the outside air toward the other end portion 72, the exposed region 73 positioned in the exposure hole 531 is cooled before the other end portion 72.

この露出領域73は、露出穴531を介して収容空間Sに露出しており、収容空間S内の空気(変速機ケース90の外部に比べて暖かい空気)に含まれる水分が、この露出穴531内に露出する露出領域73に触れて冷やされることで、露出穴531内に結露Wが発生することになる(図2の(b)参照)。
そのため、端子7aの他端部72と基板6との接続部よりも先に、露出穴531内で結露Wが生じることで、接続部での結露を防ぐことができるようになっている。
The exposed region 73 is exposed to the accommodation space S through the exposure hole 531, and moisture contained in the air in the accommodation space S (air warmer than the outside of the transmission case 90) is exposed to the exposure hole 531. Condensation W is generated in the exposed hole 531 by being cooled by touching the exposed region 73 exposed inside (see FIG. 2B).
Therefore, dew condensation W occurs in the exposure hole 531 before the connection portion between the other end portion 72 of the terminal 7a and the substrate 6 so that dew condensation at the connection portion can be prevented.

さらに、端子7aに隣接する他の端子7b、7cは、カバー部5を構成する樹脂材料(例えば、ナイロン)で覆われており、この樹脂材料の被膜は防水被膜として機能する。
そのため、露出穴531内で露出する端子7aの領域(露出領域73)に生じた結露Wを介して、端子7aが他の端子7b、7cと短絡することがない。よって、短絡に起因する電蝕を好適に防止できる。
Further, the other terminals 7b and 7c adjacent to the terminal 7a are covered with a resin material (for example, nylon) constituting the cover portion 5, and the coating of the resin material functions as a waterproof coating.
Therefore, the terminal 7a does not short-circuit with the other terminals 7b and 7c through the condensation W generated in the region of the terminal 7a exposed in the exposure hole 531 (exposed region 73). Therefore, the electric corrosion resulting from a short circuit can be prevented suitably.

これに対して、図3の(c)に示すように、端子140a〜140cの総てが、露出穴134で露出している従来例にかかるセンサの場合には、一つの端子に生じた結露Wと、他の端子に生じた結露Wとが接することで、端子同士が短絡してしまうので(図3の(c)参照)、短絡に起因する電蝕を防止できないようになっている。   On the other hand, as shown in FIG. 3C, in the case of the sensor according to the conventional example in which all of the terminals 140a to 140c are exposed through the exposure holes 134, the dew condensation generated in one terminal. Since W and dew condensation W generated on other terminals come into contact with each other, the terminals are short-circuited (see (c) in FIG. 3), so that it is not possible to prevent electric corrosion caused by the short-circuit.

実施の形態では、本体部3の支持部53における端子7(7a〜7c)の各々が埋め込まれた領域に設けた露出穴531と、一端部71と他端部72の間の領域がカバー部5内に埋め込まれた他の端子7a、7b、7cと、露出穴531を介して収容空間Sに露出する端子7aの露出領域73と、から発明における結露対策構造10を構成している。   In the embodiment, the exposure hole 531 provided in the region where each of the terminals 7 (7a to 7c) in the support portion 53 of the main body portion 3 is embedded, and the region between the one end portion 71 and the other end portion 72 are the cover portion. The other terminal 7a, 7b, 7c embedded in 5 and the exposed region 73 of the terminal 7a exposed to the accommodation space S through the exposed hole 531 constitute the dew condensation countermeasure structure 10 in the present invention.

以上の通り、実施の形態では
(1)センサ素子2の収容空間Sを内部に有する本体部3と、
一端部71と他端部72との間の領域が本体部3に埋め込まれた複数の金属製の端子7(7a〜7c)と、
端子7(7a〜7c)各々の一端部71を外部に向けて露出させたコネクタ部55と、を有し、
本体部3の支持部53における端子7(7a〜7c)の各々が埋め込まれた領域に、端子7(7a〜7c)を収容空間Sに露出させる露出穴531が設けられた回転センサ1における結露対策構造10において、
複数の端子7(7a〜7c)のうちの少なくとも一つの端子7aを、露出穴531で露出させると共に、露出させた端子7aに隣接する他の端子7b、7cを防水被膜で被覆した構成とした。
As described above, in the embodiment (1) the main body 3 having the housing space S for the sensor element 2 therein,
A plurality of metal terminals 7 (7a to 7c) in which the region between the one end portion 71 and the other end portion 72 is embedded in the main body portion 3;
A connector portion 55 having one end 71 of each of the terminals 7 (7a to 7c) exposed to the outside, and
Condensation in the rotation sensor 1 in which an exposure hole 531 for exposing the terminal 7 (7a to 7c) to the accommodation space S is provided in a region where each of the terminal 7 (7a to 7c) is embedded in the support portion 53 of the main body 3. In the countermeasure structure 10,
At least one terminal 7a of the plurality of terminals 7 (7a to 7c) is exposed through the exposure hole 531, and the other terminals 7b and 7c adjacent to the exposed terminal 7a are covered with a waterproof coating. .

このように構成すると、一端部71を外部に露出させた端子7aは、収容空間Sに露出させた他端部72よりも一端部71側の領域(露出領域73)が、露出穴531を介して収容空間Sに露出している。
そのため、外気で冷やされた一端部71から、冷やされてない他端部72に向けて熱が伝わる過程で、他端部72よりも先に露出穴531内に位置する露出領域73が冷やされることになる。
With this configuration, the terminal 7 a having the one end 71 exposed to the outside has a region (exposed region 73) closer to the one end 71 than the other end 72 exposed to the accommodation space S through the exposure hole 531. And exposed to the accommodation space S.
Therefore, in the process in which heat is transferred from the one end portion 71 cooled by the outside air toward the other end portion 72 that is not cooled, the exposed region 73 located in the exposure hole 531 is cooled before the other end portion 72. It will be.

この露出領域73は、露出穴531を介して収容空間Sに露出しており、収容空間S内の空気に含まれる水分が、この露出穴531内に露出する露出領域73で冷やされて、露出穴531内に結露することになる。
すなわち、端子7aでは、露出領域73と、他端部72(基板6との接続部)との温度差によって、露出領域73に優先的に結露Wを生じさせて、他端部72(基板6との接続部)での結露を防ぐことができる。
The exposed area 73 is exposed to the accommodation space S through the exposure hole 531, and moisture contained in the air in the accommodation space S is cooled by the exposed area 73 exposed in the exposure hole 531 and exposed. Condensation will occur in the hole 531.
That is, in the terminal 7a, due to a temperature difference between the exposed region 73 and the other end portion 72 (connecting portion with the substrate 6), condensation W is preferentially generated in the exposed region 73 and the other end portion 72 (substrate 6). Condensation at the connection part) can be prevented.

また、支持部53における露出穴531が設けられた領域では、端子7aのみが露出しており、他の端子7b、7cは、カバー部5を構成する樹脂材料で被覆されている。
そのため、端子7aのみに優先的に結露Wを生じさせることができると共に、端子7aの露出領域73に生じた結露Wを介して、端子7aが他の端子7b、7cと短絡することがないので、短絡に起因する端子の電蝕を好適に防止できる。
これにより、回転センサ1が出力するパルス信号に、電蝕に起因する抜け(パルス信号の抜け)が発生することを防止できるので、ギヤG(回転体)の回転を適切に検出できる。
Further, in the region of the support portion 53 where the exposure hole 531 is provided, only the terminal 7 a is exposed, and the other terminals 7 b and 7 c are covered with a resin material constituting the cover portion 5.
Therefore, condensation W can be preferentially generated only in the terminal 7a, and the terminal 7a is not short-circuited with the other terminals 7b and 7c through the condensation W generated in the exposed region 73 of the terminal 7a. In addition, it is possible to suitably prevent the electric corrosion of the terminal due to the short circuit.
Thereby, since it is possible to prevent the pulse signal output from the rotation sensor 1 from being lost due to electric corrosion (missing pulse signal), it is possible to appropriately detect the rotation of the gear G (rotating body).

(2)防水被膜は、カバー部5を構成する樹脂材料からなる絶縁被膜(樹脂製の絶縁被膜)である構成とした。 (2) The waterproof coating is configured to be an insulating coating (resin insulating coating) made of a resin material constituting the cover portion 5.

このように構成すると、支持部53における露出穴531が設けられた領域では、結露Wを生じさせる端子7aを除いた他の端子7b、7cが絶縁被膜で覆われる。
これにより、端子7aの露出領域73に生じた結露Wを介して、端子7aが他の端子7b、7cと短絡することがなく、短絡に起因する端子の電蝕を好適に防止できる。
If comprised in this way, in the area | region in which the exposure hole 531 in the support part 53 was provided, the other terminals 7b and 7c except the terminal 7a which produces dew condensation W are covered with an insulating film.
Thereby, the terminal 7a is not short-circuited with the other terminals 7b and 7c through the dew condensation W generated in the exposed region 73 of the terminal 7a, and the electric corrosion of the terminal due to the short circuit can be suitably prevented.

(3)各端子7(7a〜7c)の他端部72は、収容空間S内で、センサ素子2が設けられた基板6に接続されている構成とした。 (3) The other end 72 of each terminal 7 (7a to 7c) is connected to the substrate 6 provided with the sensor element 2 in the accommodation space S.

このように構成すると、露出穴531内に位置する端子7aの露出領域73に結露Wを生じさせて、各端子7(7a〜7c)の他端部72と基板6との接続部での結露を防ぐことができるので、基板6や、基板6に搭載されたセンサ素子2などの電子部品に結露の影響が及ぶことを好適に防止できる。   With this configuration, condensation W is generated in the exposed region 73 of the terminal 7 a located in the exposure hole 531, and condensation occurs at the connection portion between the other end 72 of each terminal 7 (7 a to 7 c) and the substrate 6. Therefore, it is possible to suitably prevent the influence of condensation on the board 6 and the electronic components such as the sensor element 2 mounted on the board 6.

(4)露出穴531で露出させた端子7aは、グランド端子である構成とした。 (4) The terminal 7a exposed through the exposure hole 531 is a ground terminal.

このように構成すると、グランド端子は、回転センサ1の信号の出力に直接関与しない端子であるので、回転センサ1での回転体の回転の検出に及ぶ影響を抑制できる。   If comprised in this way, since a ground terminal is a terminal which is not directly concerned with the output of the signal of the rotation sensor 1, the influence which it has on the detection of rotation of the rotary body in the rotation sensor 1 can be suppressed.

(5)センサは、回転体の回転を検出する回転センサである構成とした。 (5) The sensor is configured to be a rotation sensor that detects the rotation of the rotating body.

このように構成すると、各端子7(7a〜7c)の他端部72と基板6との接続部での結露を防ぐことができるので、基板6に搭載されたセンサ素子2からの出力信号を適切に取り出すことができ、回転体の回転を適切に検出できる。   With this configuration, it is possible to prevent dew condensation at the connection portion between the other end portion 72 of each terminal 7 (7a to 7c) and the substrate 6, so that an output signal from the sensor element 2 mounted on the substrate 6 can be obtained. It can be taken out properly and the rotation of the rotating body can be detected appropriately.

(6)回転センサ1では、露出穴531を有する支持部53のほうが、コネクタ部55が配置される変速機ケース90の外部よりも高い温度の環境下に配置される構成とした。 (6) The rotation sensor 1 is configured such that the support portion 53 having the exposed hole 531 is disposed in an environment having a higher temperature than the outside of the transmission case 90 where the connector portion 55 is disposed.

このように構成すると、各端子7(7a〜7c)は、温度が高い環境下にある支持部53内に位置する領域のほうが、コネクタ部55内に位置する領域よりも、結露が生じやすい。そのため、支持部53に露出穴531を設けて、端子7における露出穴531に露出する露出領域73に結露Wを生じさせるようにすることで、端子7の他端部72と基板6との接続部に結露が生じることを好適に防止できる。   If comprised in this way, as for each terminal 7 (7a-7c), the area | region located in the support part 53 in the environment where temperature is high tends to produce dew condensation rather than the area | region located in the connector part 55. FIG. Therefore, by providing an exposure hole 531 in the support portion 53 to cause condensation W in the exposed region 73 exposed in the exposure hole 531 in the terminal 7, the connection between the other end portion 72 of the terminal 7 and the substrate 6 is achieved. It can prevent suitably that dew condensation arises in a part.

前記した実施の形態では、カバー部5内に合計3本の端子(グランド端子、電源端子、出力端子)が設けられており、これら3本の端子のうちのグランド端子が、露出穴531を介して収容空間Sに露出している場合を例示した。
本願発明は、この態様に限定されるものではなく、電源端子や出力端子が、露出穴531を介して収容空間Sに露出している構成としても良い。
In the above-described embodiment, a total of three terminals (a ground terminal, a power supply terminal, and an output terminal) are provided in the cover portion 5, and the ground terminal of these three terminals is connected via the exposure hole 531. The case where it is exposed to the accommodation space S is illustrated.
The present invention is not limited to this mode, and the power terminal and the output terminal may be exposed to the accommodation space S through the exposure hole 531.

さらに、収容空間Sに露出させる端子の数は、1本に限定されるものではなく、図2の(c)に示すように、二つの端子を収容空間Sに露出させた構成としても良い。
この場合には、収容空間Sに露出させた端子7a、7cに隣接する他の端子7bが、樹脂被膜で覆われるようにすることで、端子同士の短絡と、電蝕を好適に防止できる。
Furthermore, the number of terminals exposed to the accommodation space S is not limited to one, and a configuration in which two terminals are exposed to the accommodation space S may be employed as shown in FIG.
In this case, the other terminals 7b adjacent to the terminals 7a and 7c exposed in the accommodation space S are covered with the resin film, so that short-circuiting between terminals and electric corrosion can be suitably prevented.

また、前記した実施の形態では、カバー部5の支持部53内で並んだ3つの端子7a、7b、7cのうち、端に位置する端子7aを収容空間Sに露出させた構成としたが、図2の(d)に示すように、真ん中に位置する端子7bを、収容空間Sに露出させる構成としても良い。   In the embodiment described above, the terminal 7a located at the end of the three terminals 7a, 7b, 7c arranged in the support part 53 of the cover part 5 is exposed to the accommodation space S. As shown in FIG. 2D, the terminal 7b located in the middle may be exposed to the accommodation space S.

さらに、実施の形態では、カバー部5内に埋め込まれた端子の総数が3本である場合を例示したが、端子の総数は、必ずしも3本である必要は無い。
センサの仕様などに応じて、適宜増減可能である。この場合には、収容空間Sに露出させた端子に近接、隣接する他の端子を樹脂材料で被覆することで、収容空間Sに露出させた端子に生じた結露を介して、端子同士が短絡して、電蝕することを好適に防止できる。
Furthermore, in the embodiment, the case where the total number of terminals embedded in the cover unit 5 is three is illustrated, but the total number of terminals is not necessarily three.
The number can be appropriately increased or decreased according to the sensor specifications. In this case, the other terminals adjacent to and adjacent to the terminals exposed in the accommodation space S are covered with a resin material, so that the terminals are short-circuited through condensation formed on the terminals exposed in the accommodation space S. Thus, it is possible to suitably prevent electrolytic corrosion.

実施の形態では、本発明に係る結露対策構造を、回転センサに適用した場合を例示した。本願発明は、この態様に限定されるものではなく、端子の長手方向の一端部と他端部との間で温度差が生じる環境下で使用される他のセンサにも適用可能である。   In the embodiment, the case where the dew condensation countermeasure structure according to the present invention is applied to a rotation sensor is illustrated. The present invention is not limited to this mode, and can be applied to other sensors used in an environment where a temperature difference occurs between one end and the other end in the longitudinal direction of the terminal.

1 回転センサ
2 センサ素子
3 本体部
4 ケース部
41 周壁部
41a 開口
42 底壁部
45 シールリング
5 カバー部
51 基部
52 嵌合部
53 支持部
531 露出穴
54 連結部
541 挿通孔
55 コネクタ部
551 周壁部
6 基板
7(7a〜7c)端子
71 一端部
72 他端部
73 露出領域
90 変速機ケース
91 挿入孔
92 ボルト孔
10 結露対策構造
B ボルト
G ギヤ
S 収容空間
W 結露
DESCRIPTION OF SYMBOLS 1 Rotation sensor 2 Sensor element 3 Main-body part 4 Case part 41 Perimeter wall part 41a Opening 42 Bottom wall part 45 Seal ring 5 Cover part 51 Base part 52 Fit part 53 Support part 531 Exposed hole 54 Connection part 541 Insertion hole 55 Connector part 551 Perimeter wall Part 6 Substrate 7 (7a-7c) Terminal 71 One end 72 Other end 73 Exposed area 90 Transmission case 91 Insert hole 92 Bolt hole 10 Condensation countermeasure structure B Bolt G Gear S Housing space W Condensation

Claims (5)

センサ素子の収容空間を内部に有する本体部と、
一端部と他端部との間の領域が前記本体部に埋め込まれた複数の端子と、
前記端子各々の一端部を外部に向けて露出させたコネクタ部と、を有し、
前記本体部における前記端子の各々が埋め込まれた領域に、前記端子を前記収容空間に露出させる露出穴が設けられたセンサであって、
前記複数の端子のうちの少なくとも一つを、前記露出穴で露出させると共に、露出させた端子に隣接する他の端子を防水被膜で被覆したことを特徴とするセンサにおける結露対策構造。
A main body having a housing space for the sensor element therein;
A plurality of terminals in which a region between one end and the other end is embedded in the main body;
A connector part that exposes one end part of each of the terminals toward the outside, and
In the area where each of the terminals in the main body is embedded, an exposure hole for exposing the terminal to the accommodation space is provided,
At least one of the plurality of terminals is exposed through the exposed hole, and another terminal adjacent to the exposed terminal is covered with a waterproof coating.
前記防水被膜は、樹脂被膜であることを特徴とする請求項1に記載のセンサにおける結露対策構造。   The dew condensation countermeasure structure for a sensor according to claim 1, wherein the waterproof coating is a resin coating. 前記端子各々の他端部は、前記収容空間内で、前記センサ素子が設けられた基板に接続されていることを特徴とする請求項1または請求項2に記載のセンサにおける結露対策構造。   3. The dew condensation countermeasure structure for a sensor according to claim 1, wherein the other end of each of the terminals is connected to a substrate on which the sensor element is provided in the accommodation space. 前記露出穴で露出させた端子は、グランド端子であることを特徴とする請求項1から請求項3の何れか一項に記載のセンサにおける結露対策構造。   4. The dew condensation countermeasure structure for a sensor according to claim 1, wherein the terminal exposed in the exposure hole is a ground terminal. 5. 前記センサは、回転体の回転を検出する回転センサであることを特徴とする請求項1から請求項4の何れか一項に記載のセンサにおける結露対策構造。   The said sensor is a rotation sensor which detects rotation of a rotary body, The dew condensation countermeasure structure in the sensor as described in any one of Claims 1-4 characterized by the above-mentioned.
JP2016219232A 2016-11-09 2016-11-09 Condensation countermeasure structure in the sensor Active JP6758763B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2016219232A JP6758763B2 (en) 2016-11-09 2016-11-09 Condensation countermeasure structure in the sensor
KR1020170140839A KR20180052087A (en) 2016-11-09 2017-10-27 Dew Condensation countermeasure structure in sensor
CN201711068994.0A CN108062967B (en) 2016-11-09 2017-11-03 Condensation-preventing structure of sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016219232A JP6758763B2 (en) 2016-11-09 2016-11-09 Condensation countermeasure structure in the sensor

Publications (2)

Publication Number Publication Date
JP2018077142A true JP2018077142A (en) 2018-05-17
JP6758763B2 JP6758763B2 (en) 2020-09-23

Family

ID=62134862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016219232A Active JP6758763B2 (en) 2016-11-09 2016-11-09 Condensation countermeasure structure in the sensor

Country Status (3)

Country Link
JP (1) JP6758763B2 (en)
KR (1) KR20180052087A (en)
CN (1) CN108062967B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020085649A (en) * 2018-11-26 2020-06-04 日本精機株式会社 Mobile body detector and method for manufacturing mobile body detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020048615A (en) * 2018-09-21 2020-04-02 日立グローバルライフソリューションズ株式会社 Washing and drying machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0979864A (en) * 1995-09-08 1997-03-28 Hitachi Ltd Rotational position detecting device
JPH1031028A (en) * 1996-07-15 1998-02-03 Mitsubishi Electric Corp Airtight assembly of electronic part, and its manufacture
US5719334A (en) * 1996-07-11 1998-02-17 Ford Motor Company Hermetically protected sensor assembly
JP2007132816A (en) * 2005-11-10 2007-05-31 Yazaki Corp Waterproof structure of sensor
WO2008108431A1 (en) * 2007-03-07 2008-09-12 Mitsuba Corporation Brushless motor
JP2011012967A (en) * 2009-06-30 2011-01-20 Nippon Seiki Co Ltd Moving object detection device
JP2013206969A (en) * 2012-03-27 2013-10-07 Keihin Corp Electronic apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08334524A (en) * 1995-06-05 1996-12-17 Honda Lock Mfg Co Ltd Electromagnetic sensor
JP3445975B2 (en) * 2001-03-30 2003-09-16 三相電機株式会社 Pump for hot water circulation by direct drive of brushless DC motor
JP3711951B2 (en) * 2002-02-28 2005-11-02 株式会社デンソー Sensor structure and sensor manufacturing method
CN104215382B (en) * 2014-09-05 2016-04-06 沈阳市传感技术研究所 The film isolated form gauge pressure transducer of external balance chamber
CN105319002A (en) * 2015-11-27 2016-02-10 上海立格仪表有限公司 Natural ventilation pressure measuring instrument

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0979864A (en) * 1995-09-08 1997-03-28 Hitachi Ltd Rotational position detecting device
US5719334A (en) * 1996-07-11 1998-02-17 Ford Motor Company Hermetically protected sensor assembly
JPH1031028A (en) * 1996-07-15 1998-02-03 Mitsubishi Electric Corp Airtight assembly of electronic part, and its manufacture
JP2007132816A (en) * 2005-11-10 2007-05-31 Yazaki Corp Waterproof structure of sensor
WO2008108431A1 (en) * 2007-03-07 2008-09-12 Mitsuba Corporation Brushless motor
JP2011012967A (en) * 2009-06-30 2011-01-20 Nippon Seiki Co Ltd Moving object detection device
JP2013206969A (en) * 2012-03-27 2013-10-07 Keihin Corp Electronic apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020085649A (en) * 2018-11-26 2020-06-04 日本精機株式会社 Mobile body detector and method for manufacturing mobile body detector

Also Published As

Publication number Publication date
CN108062967A (en) 2018-05-22
CN108062967B (en) 2021-06-08
KR20180052087A (en) 2018-05-17
JP6758763B2 (en) 2020-09-23

Similar Documents

Publication Publication Date Title
JP5157967B2 (en) Sensor device and its mounting structure
US20050268732A1 (en) Rotational sensor
JP5756015B2 (en) Temperature sensor, manufacturing method and mounting method thereof
JP6520033B2 (en) motor
JP6972482B2 (en) Electronics
JP2017139830A (en) Driving device
US9429587B2 (en) Sensor with laser welded cover
JP2018077142A (en) Dew condensation measure structure in sensor
JP6575347B2 (en) Electronic equipment
US20160141775A1 (en) Plug assembly
JP2008139032A (en) Mobile body detection device
JPWO2016017050A1 (en) Temperature sensor
US7157903B2 (en) Inductive sensor and rotary encoder provided with an inductive sensor
JP2018082090A (en) Electronic device
JP2011117853A (en) Current detector
JP2008065404A (en) Fire sensor
JP4688660B2 (en) Rotation detector
JP4759972B2 (en) Bearing device with sensor
JP2007132816A (en) Waterproof structure of sensor
JP2006109666A (en) Motor
JP2006189101A (en) Bearing device with sensor
US20190348893A1 (en) Motor for vehicle transmission pump having a sensor and a magnet separated by a non-magnetic barrier
JP2004184145A (en) Gas and temperature detector, and method of manufacturing gas and temperature detector
WO2021065452A1 (en) Motor unit
JP4501585B2 (en) Electrical circuit parts and housing with waterproof structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20190607

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20200520

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200623

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200820

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20200901

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20200901

R150 Certificate of patent or registration of utility model

Ref document number: 6758763

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150