JP3749599B2 - Electronic component mounting structure - Google Patents

Electronic component mounting structure Download PDF

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Publication number
JP3749599B2
JP3749599B2 JP23812397A JP23812397A JP3749599B2 JP 3749599 B2 JP3749599 B2 JP 3749599B2 JP 23812397 A JP23812397 A JP 23812397A JP 23812397 A JP23812397 A JP 23812397A JP 3749599 B2 JP3749599 B2 JP 3749599B2
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JP
Japan
Prior art keywords
thermistor
mounting plate
electronic component
notch
mounting
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.)
Expired - Fee Related
Application number
JP23812397A
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Japanese (ja)
Other versions
JPH1183307A (en
Inventor
優 広沢
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.)
Hoshizaki Electric Co Ltd
Original Assignee
Hoshizaki Electric Co 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 Hoshizaki Electric Co Ltd filed Critical Hoshizaki Electric Co Ltd
Priority to JP23812397A priority Critical patent/JP3749599B2/en
Publication of JPH1183307A publication Critical patent/JPH1183307A/en
Application granted granted Critical
Publication of JP3749599B2 publication Critical patent/JP3749599B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Details Of Resistors (AREA)
  • Thermistors And Varistors (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、電子部品を最適位置へ取り付けるための構造に関し、取付作業が簡単で、取付状態を均一にできる手段の提供を目的とするものである。
【0002】
【従来の技術】
図7に示す冷蔵庫Rは、側方の機械室m内に設けた冷却ユニットUで冷気を生成し、これを冷風ファンf及び案内板tで矢印に示す如く庫内nを循環させるよう構成されている。冷却ユニットUは、図8に示すように、冷却器31,凝縮器33,凝縮ファン34,凝縮器モーター35,圧縮器37,これらを制御する電装ボックス32等がベース36上に組み付けられて成り、冷却器カバー38の表面に冷風ファンfが取り付けられている。また、庫内温度を一定に保つため、庫内温度検出用のサーミスタ10と過冷却防止用のガラス管ヒーターHとが設けられ、サーミスタ10は、ガラス管ヒーターHのカバー39表面に固定した取付板40により取り付けられる。
【0003】
図9に、サーミスタ10の取付状況を拡大して示す。サーミスタ10は、リード線12の先端に、感温素子を封入した本体部11を設けたものである。取付板40は、ヒーターカバー39へネジ50等により固定され、切欠部42と、その両側の貫通孔41,43とが形成されている。サーミスタ10は、本体部11が切欠部42に臨むよう配置されると共に、貫通孔41,43の位置で固定バンド20,20により、サーミスタ本体部11の先端とリード線12とが取付板40に締結されている。
【0004】
【発明が解決しようとする課題】
サーミスタ10の本体部11の内部構造は、例えば図10のように、ダイオード13やサーミスタ電極14,14等の感温素子を、軟質塩化ビニール等の合成樹脂材料15に封入して成形したものである。従って、サーミスタ10を取付板40へ取り付ける際には、ガラス部分を有するダイオード13が、切欠部42のなるべく中央となるように位置させなくてはならない。しかしながら、作業者の熟練度その他の条件によって、サーミスタ10の取付位置が図11のようになるおそれがある。同図のように、サーミスタ本体部11の中央域を固定バンド20で締結した場合、本体部11内のダイオード13が圧迫されて損傷を受け又は破壊され、サーミスタ10の動作不良をきたす可能性がある。そこで、ダイオード13に損傷を与えないよう、固定バンド20の締結力を弱くすることが考えられるが、この場合は、冷却器の振動等によりサーミスタ10の位置ずれや脱落を招くおそれがある。
【0005】
【課題を解決するための手段】
本発明は、サーミスタ等の電子部品を、最適な位置へ簡単な作業で確実に取り付けることができる手段を提供するものであって、その特徴とするところは、リード線の端部に合成樹脂材料で素子を封入して成形した本体部が設けられてなる電子部品が取り付けられる取付板に切欠部を形成し、この切欠部の近傍においてリード線を取付板に固定し、上記切欠部を横断するように電子部品の本体部を配置すると共に、当該本体部を弾性変形させて基端部を取付板の一方の面に先端部を取付板の他方の面にそれぞれ弾性的に当接させ、前記切欠部における前記電子部品の先端部を当接させる側に切欠部内方へ突出する係止突部とその奥側の装着凹部とを形成し、前記電子部品の先端付近を前記装着凹部に嵌合させたことである。
【0006】
【発明の実施の形態】
本発明の実施形態を、電子部品がサーミスタであり、これを冷蔵庫の冷却ユニットへ取り付ける場合を例にして説明する。なおサーミスタは、リード線の先端に、感温素子を軟質塩化ビニール等の合成樹脂材料に封入して成形した本体部を設けて成るものであり、その取付位置は前記従来例と同様に、ヒーターカバーの表面等でよい。
【0007】
図1に、本発明の実施に供する取付板1の一例を示す。同取付板1は、ヒーターカバー等へ固定される固定部2と、サーミスタ10が装着される保持部3とから成り、保持部3は、切欠部4と、その一側方に形成した2個の貫通孔5,6とを有している。本実施形態の切欠部4は、貫通孔5,6とは反対側の部位に、切欠部4内方へ突出する係止突部4aが形成され、該係止突部4aの奥側に装着凹部4bと、切欠部4の奥行き寸法を漸減させる斜辺部4cとが形成されている。なお、前記貫通孔5,6近くの保持部3の端縁には、後述する固定バンド20を係合させるための凹部7が設けられている。
【0008】
サーミスタ10は、このように製作された取付板1へ、図2の如く取り付けられるが、その手順を図3を参照して説明する。まず図3(A)のように、サーミスタ10の本体部11を、取付板1における保持部3の裏面3b側から切欠部4に近い方の貫通孔5へ挿通し、保持部3の表面3a側へ引っ張りだす。次いで同図(B)のように、もう一方の貫通孔6に固定バンド20を挿通し、本体部11近くのリード線12を保持部3に締結する。このとき、サーミスタ本体部11の基端部分11bが2〜3mm程度、保持部表面3aに当接するよう設定することが望ましい。引き続き、サーミスタ本体部11を弾性変形させて先端部分11aを前記係止突部4aをくぐらせ、保持部裏面3bに当接させる。サーミスタ10は、本体部11近くのリード線12が取付板1に締結されているから、サーミスタ本体部11が若干弾性変形した状態で切欠部4を横断するように配置される。それ故、先端部分11aが保持部裏面3bに、基端部分11bが保持部表面3aにそれぞれ弾性的に当接する装着状態が得られる。また、サーミスタ本体部11の先端付近が、切欠部4の係止突部4aと斜辺部4cとに挟まれた装着凹部4bに嵌合するから、サーミスタ10の取付状態が安定し、機械の振動によって位置ずれを起こしたり容易に脱落したりすることがない。さらに斜辺部4cにより、本体部11の先端部分11aが装着凹部4bへ導かれるので、適正な取付位置が保証される。
【0009】
本発明の実施形態は、適宜変更することが可能である。例えば取付板1の切欠部4については、図4又は図5のような形状とすることが可能である。また図6に示すように、切欠部4に形成する係止突部4aを裏面3b側へやや折曲することもできる。かかる構成により、サーミスタ本体部11の脱落防止がより確実になる。さらに本発明の適用対象は、サーミスタに限らず他の電子部品でもよく、その取付箇所についても、冷蔵庫以外のさまざまな箇所を取り付け対象とすることができるものである。
【0010】
【発明の効果】
本発明によれば、サーミスタ等の電子部品を取り付けるに際し、作業者の熟練度に係わらず常に適正な取付状態を確実に得ることができるから、電子部品に損傷を与えて動作不良を招くおそれがなくなり、正常な動作が保証される。また、作業工数が減るので、取付作業の能率が向上する。取付板については形状の簡単な変更を加えるだけでよく、固定バンドの使用数を減少できるため、コストダウンがもたらされる。
【図面の簡単な説明】
【図1】本発明の実施に供する取付板の一例を示す正面図である。
【図2】本発明に係る取付構造の一実施形態を示すものであって、サーミスタの取付状況を示す正面図である。
【図3】サーミスタの取付板への取付手順を説明するものであって、底面側から見た図面である。
【図4】本発明の実施に供する取付板の他の例を示す正面図である。
【図5】本発明の実施に供する取付板のさらに他の例を示す正面図である。
【図6】本発明に係る取付構造の他の実施形態を示す底面図である。
【図7】従来の冷蔵庫を示すものであって、図(A)は斜視図、図(B)は正面断面図である。
【図8】従来の冷蔵庫の冷却ユニットを取り出して示す斜視図である。
【図9】従来のサーミスタの取付構造を示すものであって、図(A)は正面図、図(B)は左側面図である。
【図10】サーミスタの内部構造を概略的に示す断面図である。
【図11】従来のサーミスタの取付構造において起こり得る欠点を説明する正面図である。
【符号の説明】
1…取付板、2…固定部、3…保持部、4…切欠部、5,6…貫通孔、10…サーミスタ、11…サーミスタ本体部、12…リード線、20…固定バンド
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for attaching an electronic component to an optimum position, and an object thereof is to provide a means capable of making the attachment state uniform with a simple attachment operation.
[0002]
[Prior art]
The refrigerator R shown in FIG. 7 is configured to generate cold air with a cooling unit U provided in a side machine room m, and to circulate this through a n chamber as indicated by an arrow with a cold air fan f and a guide plate t. ing. As shown in FIG. 8, the cooling unit U includes a cooler 31, a condenser 33, a condensing fan 34, a condenser motor 35, a compressor 37, an electric box 32 that controls these, and the like mounted on a base 36. A cool air fan f is attached to the surface of the cooler cover 38. Further, in order to keep the inside temperature constant, a thermistor 10 for detecting the inside temperature and a glass tube heater H for preventing overcooling are provided. The thermistor 10 is fixed to the surface of the cover 39 of the glass tube heater H. It is attached by a plate 40.
[0003]
FIG. 9 shows an enlarged view of the mounting state of the thermistor 10. The thermistor 10 is provided with a main body 11 enclosing a temperature sensitive element at the tip of a lead wire 12. The mounting plate 40 is fixed to the heater cover 39 with screws 50 or the like, and a notch 42 and through holes 41 and 43 on both sides thereof are formed. The thermistor 10 is arranged so that the main body 11 faces the notch 42, and the tip of the thermistor main body 11 and the lead wire 12 are attached to the mounting plate 40 by the fixing bands 20, 20 at the positions of the through holes 41, 43. It is concluded.
[0004]
[Problems to be solved by the invention]
The internal structure of the main body 11 of the thermistor 10 is formed by encapsulating a temperature sensitive element such as a diode 13 and the thermistor electrodes 14 and 14 in a synthetic resin material 15 such as soft vinyl chloride as shown in FIG. is there. Therefore, when the thermistor 10 is attached to the attachment plate 40, the diode 13 having the glass portion must be positioned so as to be as central as possible in the cutout portion 42. However, the attachment position of the thermistor 10 may be as shown in FIG. 11 depending on the skill level of the operator and other conditions. If the central region of the thermistor main body 11 is fastened with the fixed band 20 as shown in the figure, the diode 13 in the main body 11 may be compressed and damaged or destroyed, and the thermistor 10 may malfunction. is there. Therefore, it is conceivable to weaken the fastening force of the fixing band 20 so as not to damage the diode 13, but in this case, the thermistor 10 may be displaced or dropped due to vibration of the cooler or the like.
[0005]
[Means for Solving the Problems]
The present invention provides a means for securely attaching an electronic component such as a thermistor to an optimum position by a simple operation, and the feature thereof is that a synthetic resin material is provided at the end of a lead wire. A notch is formed in a mounting plate to which an electronic component formed by encapsulating the element and provided with an electronic component is mounted, and a lead wire is fixed to the mounting plate in the vicinity of the notch, and the notch is traversed. with arranging the main body of the electronic components as, the main body portion respectively to elastically abut the distal portion of the proximal end portion is elastically deformed to one side of the mounting plate to the other side of the mounting plate, the A locking protrusion protruding inwardly of the notch and a mounting recess on the back side thereof are formed on the side where the tip of the electronic component contacts the notch, and the vicinity of the tip of the electronic component is fitted into the mounting recess. It was made to .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described by taking as an example a case where an electronic component is a thermistor and is attached to a cooling unit of a refrigerator. The thermistor is provided with a main body portion formed by encapsulating a thermosensitive element in a synthetic resin material such as soft vinyl chloride at the tip of a lead wire, and its mounting position is the same as in the conventional example. It may be the surface of the cover.
[0007]
FIG. 1 shows an example of a mounting plate 1 used for carrying out the present invention. The mounting plate 1 includes a fixing portion 2 fixed to a heater cover and the like, and a holding portion 3 to which the thermistor 10 is attached. The holding portion 3 includes a notch portion 4 and two pieces formed on one side thereof. Through-holes 5 and 6. The notch 4 of the present embodiment is formed with a locking projection 4a projecting inwardly of the notch 4 at a portion opposite to the through holes 5 and 6, and is mounted on the back side of the locking projection 4a. A recess 4b and a hypotenuse 4c that gradually reduces the depth dimension of the notch 4 are formed. In addition, the recessed part 7 for engaging the fixing band 20 mentioned later is provided in the edge of the holding | maintenance part 3 near the said through-holes 5 and 6. As shown in FIG.
[0008]
The thermistor 10 is attached to the mounting plate 1 manufactured as described above as shown in FIG. 2, and the procedure will be described with reference to FIG. First, as shown in FIG. 3A, the body portion 11 of the thermistor 10 is inserted from the back surface 3b side of the holding portion 3 in the mounting plate 1 into the through hole 5 closer to the notch portion 4, and the surface 3a of the holding portion 3 is inserted. Pull to the side. Next, as shown in FIG. 5B, the fixing band 20 is inserted into the other through hole 6, and the lead wire 12 near the main body portion 11 is fastened to the holding portion 3. At this time, it is desirable that the base end portion 11b of the thermistor main body 11 is set to contact the holding portion surface 3a by about 2 to 3 mm. Subsequently, the thermistor body 11 is elastically deformed so that the tip portion 11a passes through the locking projection 4a and abuts against the holding portion back surface 3b. The thermistor 10 is disposed so as to cross the notch 4 with the thermistor main body 11 slightly elastically deformed because the lead wire 12 near the main body 11 is fastened to the mounting plate 1. Therefore, it is possible to obtain a mounting state in which the distal end portion 11a elastically contacts the holding portion back surface 3b and the base end portion 11b elastically contacts the holding portion surface 3a. Further, since the vicinity of the tip of the thermistor body 11 is fitted into the mounting recess 4b sandwiched between the locking protrusion 4a and the oblique side 4c of the notch 4, the thermistor 10 is stably attached, and the vibration of the machine Does not cause misalignment or fall off easily. Furthermore, since the tip end portion 11a of the main body 11 is guided to the mounting recess 4b by the oblique side portion 4c, an appropriate mounting position is ensured.
[0009]
Embodiments of the present invention can be modified as appropriate. For example, the cutout 4 of the mounting plate 1 can be shaped as shown in FIG. 4 or FIG. Moreover, as shown in FIG. 6, the latching protrusion part 4a formed in the notch part 4 can also be bent a little to the back surface 3b side. With this configuration, the thermistor body 11 can be more reliably prevented from falling off. Furthermore, the application target of the present invention is not limited to the thermistor, and may be other electronic components, and various attachment points other than the refrigerator can be set as attachment targets.
[0010]
【The invention's effect】
According to the present invention, when an electronic component such as a thermistor is attached, an appropriate attachment state can always be reliably obtained regardless of the skill level of the operator, and thus there is a risk of causing damage to the electronic component and causing a malfunction. And normal operation is guaranteed. Further, since the number of work steps is reduced, the efficiency of the mounting work is improved. It is only necessary to make a simple change in the shape of the mounting plate, and the number of fixed bands used can be reduced, resulting in cost reduction.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a mounting plate used for carrying out the present invention.
FIG. 2 is a front view showing a mounting state of the thermistor according to one embodiment of the mounting structure according to the present invention.
FIG. 3 is a view illustrating a procedure for mounting the thermistor on the mounting plate, as viewed from the bottom surface side.
FIG. 4 is a front view showing another example of a mounting plate for carrying out the present invention.
FIG. 5 is a front view showing still another example of a mounting plate used for carrying out the present invention.
FIG. 6 is a bottom view showing another embodiment of the mounting structure according to the present invention.
FIG. 7 shows a conventional refrigerator, in which FIG. (A) is a perspective view and FIG. (B) is a front sectional view.
FIG. 8 is a perspective view showing a cooling unit of a conventional refrigerator taken out.
FIG. 9 shows a conventional thermistor mounting structure, in which FIG. (A) is a front view and FIG. (B) is a left side view.
FIG. 10 is a cross-sectional view schematically showing the internal structure of the thermistor.
FIG. 11 is a front view for explaining a possible defect in a conventional thermistor mounting structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mounting plate, 2 ... Fixing part, 3 ... Holding part, 4 ... Notch part, 5, 6 ... Through-hole, 10 ... Thermistor, 11 ... Thermistor main-body part, 12 ... Lead wire, 20 ... Fixing band

Claims (1)

リード線の端部に合成樹脂材料で素子を封入して成形した本体部が設けられてなる電子部品を取付板により取り付けるための構造であって、前記取付板に切欠部が形成され、この切欠部の近傍においてリード線が取付板に固定され、上記切欠部を横断するように電子部品の本体部が配置されると共に、当該本体部を弾性変形させて基端部を取付板の一方の面に先端部を取付板の他方の面にそれぞれ弾性的に当接させ、前記切欠部における前記電子部品の先端部を当接させる側に切欠部内方へ突出する係止突部とその奥側の装着凹部とが形成され、前記電子部品の先端付近を前記装着凹部に嵌合させたことを特徴とする電子部品の取付構造。A structure for attaching an electronic component having a body portion formed by encapsulating an element with a synthetic resin material at an end portion of a lead wire by a mounting plate, wherein the notch portion is formed in the mounting plate. The lead wire is fixed to the mounting plate in the vicinity of the portion, and the main body portion of the electronic component is disposed so as to cross the notch portion, and the main body portion is elastically deformed so that the base end portion is one surface of the mounting plate. The front end of each of the mounting plate is elastically contacted to the other surface of the mounting plate, and the locking protrusion protruding inwardly of the notch to the side where the front end of the electronic component contacts the notch and the back side thereof A mounting structure for an electronic component , wherein a mounting recess is formed, and the vicinity of the tip of the electronic component is fitted into the mounting recess .
JP23812397A 1997-09-03 1997-09-03 Electronic component mounting structure Expired - Fee Related JP3749599B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23812397A JP3749599B2 (en) 1997-09-03 1997-09-03 Electronic component mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23812397A JP3749599B2 (en) 1997-09-03 1997-09-03 Electronic component mounting structure

Publications (2)

Publication Number Publication Date
JPH1183307A JPH1183307A (en) 1999-03-26
JP3749599B2 true JP3749599B2 (en) 2006-03-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP23812397A Expired - Fee Related JP3749599B2 (en) 1997-09-03 1997-09-03 Electronic component mounting structure

Country Status (1)

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