JP3328453B2 - Structure of stator coil of electric expansion valve - Google Patents
Structure of stator coil of electric expansion valveInfo
- Publication number
- JP3328453B2 JP3328453B2 JP30312394A JP30312394A JP3328453B2 JP 3328453 B2 JP3328453 B2 JP 3328453B2 JP 30312394 A JP30312394 A JP 30312394A JP 30312394 A JP30312394 A JP 30312394A JP 3328453 B2 JP3328453 B2 JP 3328453B2
- Authority
- JP
- Japan
- Prior art keywords
- stator coil
- coil
- stator
- expansion valve
- molding material
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、弁本体に固定子コイル
をワンタッチで脱着できるようにした電動膨張弁の固定
子コイルの構造に係り、特に固定子コイルに設けたワン
タッチ装着のための係合突部の強度を著しく向上させた
電動膨張弁の固定子コイルの構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a stator coil of an electric expansion valve in which a stator coil can be attached to and detached from a valve body with one touch, and more particularly to a structure for one-touch mounting provided on a stator coil. The present invention relates to a structure of a stator coil of an electric expansion valve in which the strength of a collision portion is significantly improved.
【０００２】[0002]
【従来の技術】従来のこの種の電動膨張弁としては、本
願出願人による実開平５−２５０８３号公報に電動弁の
構造が開示されている。この電動弁を図５と図６により
説明すると、弁軸３ａと回転子４は一体的に成形されて
おり、弁本体１の弁座２に接離する針状弁３は、ステッ
ピングモータの永久磁石からなる回転子４の動作により
軸方向に作動するようになっている。また、固定子コイ
ル７は、コイル５とコイル５を包むステータカバー６を
内蔵しており、該固定子コイル７の下面には、弁本体１
の六角材平坦部８ａを当接させる当たり面９ａを備える
と共に後述するフック１０を係止させる溝９ｂを備えた
係合突部９ｃ、９ｄを例えばエポキシなどの樹脂モール
ド材１１で固定子コイル７全体と一体的に設けられてい
る。2. Description of the Related Art As a conventional motor-operated expansion valve of this type, the structure of a motor-operated valve is disclosed in Japanese Utility Model Laid-Open No. 5-25083 by the present applicant. 5 and 6, the valve shaft 3a and the rotor 4 are integrally formed, and the needle valve 3 which comes into contact with and separates from the valve seat 2 of the valve body 1 is a permanent valve of the stepping motor. It operates in the axial direction by the operation of the rotor 4 composed of a magnet. The stator coil 7 has a built-in coil 5 and a stator cover 6 surrounding the coil 5, and the lower surface of the stator coil 7 has a valve body 1.
The engaging protrusions 9c and 9d having a contact surface 9a for contacting the hexagonal material flat portion 8a and having a groove 9b for locking a hook 10 described later are fixed to the stator coil 7 by a resin molding material 11 such as epoxy. It is provided integrally with the whole.
【０００３】そして、図６に示すように、前記溝９ｂに
は半円形状に形成した２個の係合部１２を備えた弾性体
からなるフック１０が着脱自在に固定され、一方、前記
固定子コイル７の穴１３に挿入されるボディ８は、その
円筒面にリング状の凹溝８ｂが設けられていて、前記フ
ック１０と弁本体１とが着脱自在に軸方向に固定される
と共に、ボディ８の六角材平坦部８ａと少なくとも一方
の係合突部９ｃの当たり面９ａとが当接して弁本体１が
周方向に動かないように固定されてる。As shown in FIG. 6, a hook 10 made of an elastic body having two engaging portions 12 formed in a semicircular shape is detachably fixed to the groove 9b. The body 8 inserted into the hole 13 of the slave coil 7 is provided with a ring-shaped concave groove 8b on its cylindrical surface, and the hook 10 and the valve body 1 are detachably fixed in the axial direction. The hexagonal material flat portion 8a of the body 8 and the contact surface 9a of at least one of the engaging projections 9c abut against each other, and the valve body 1 is fixed so as not to move in the circumferential direction.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来の構造で
は、係合突部９ｃ、９ｄが前記樹脂モールド材１１で形
成されるために強度があまり強くなく、弁本体１と固定
子コイル７の着脱時に過大な力を受けたり、あるいは、
輸送時に外部から大きな衝撃を受けたり無理な取扱いを
行うと係合突部９ｃ、９ｄの根元にひびが入ったり一部
が欠損するという問題があった。However, in the conventional structure, since the engaging projections 9c and 9d are formed by the resin molding material 11, the strength is not so strong. Receiving excessive force when attaching or detaching, or
If a large shock is applied from outside or excessive handling is performed during transportation, there is a problem that the roots of the engaging projections 9c and 9d are cracked or partially lost.
【０００５】本発明は、前記のような問題点を解消する
ためになされたもので、係合突部の強度をアップし、性
能試験時や量産組立時などの弁本体と固定子コイルの着
脱時の信頼性の向上を図るものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it has been proposed to increase the strength of an engagement projection and to attach / detach a stator coil to / from a valve body during a performance test or mass production assembly. It is intended to improve the reliability at the time.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明の電動
膨張弁の固定子コイルの構造は、コイル５を内蔵する固
定子コイル７に、係合突部９ｃ、９ｄを樹脂モールド材
１１で固定子コイル７全体と一体的に形成し、弁本体１
の六角材平坦部８ａを当接させる当たり面９ａを備える
と共にフック１０を係止させる溝９ｂを備えた係合突部
９ｄ、９ｄを樹脂モールド材１１と一体的に設け、前記
フック１０を弁本体１の円筒部に形成されたリング状の
凹溝８ｂに嵌め込むことにより弁本体１と固定子コイル
７を着脱自在に固定できるようにした電動膨張弁におい
て、前記係合突部９ｃ、９ｄ、９ｄに位置する部分にお
けるコイル５を包む金属製のステータカバー６を切り起
こして爪１４を立設すると共に、該爪１４の周囲を樹脂
モールド材１１で覆うようにしたことを特徴とするもの
である。That is, the structure of the stator coil of the electric expansion valve according to the present invention is such that the engaging projections 9c and 9d are fixed to the stator coil 7 containing the coil 5 with the resin molding material 11. The valve body 1 is formed integrally with the whole child coil 7 and
Engaging projections 9d, 9d having a contact surface 9a for contacting the hexagonal material flat portion 8a and a groove 9b for locking the hook 10 are provided integrally with the resin molding material 11, and the hook 10 is provided with a valve. In the electric expansion valve in which the valve main body 1 and the stator coil 7 can be detachably fixed by being fitted into a ring-shaped concave groove 8b formed in a cylindrical portion of the main body 1, the engagement protrusions 9c and 9d are provided. , 9d, the metal stator cover 6 wrapping the coil 5 is cut and raised to erect the claws 14, and the periphery of the claws 14 is covered with a resin molding material 11. It is.
【０００７】[0007]
【実施例】以下、本発明の実施例を図１と図２に基づい
て説明する。図１は、本発明に係る電動膨張弁の固定子
コイル７の構造を示す縦断面図であり、図２はステータ
ーカバーの斜視図である。本発明の固定子コイル７は、
コイル５を包む金属製のステータカバー６下面におい
て、係合突部９ｃ、９ｄがモールド成形される部分のス
テータカバー６を切り起こして爪１４を形成し、該爪１
４の周囲を樹脂モールド材１１で覆うようになってい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view showing a structure of a stator coil 7 of an electric expansion valve according to the present invention, and FIG. 2 is a perspective view of a stator cover. The stator coil 7 of the present invention includes:
On the lower surface of the metallic stator cover 6 enclosing the coil 5, a portion of the stator cover 6 where the engaging projections 9 c and 9 d are molded is cut and raised to form claws 14.
4 is covered with a resin molding material 11.
【０００８】なお、前記したステーターカバーに設けた
爪１４を除き、固定子７に形成された係合突部９ｃ、９
ｄの外側構造および弁本体１の全構造は前記した従来と
同様な構造であり説明を省略する。Except for the claws 14 provided on the stator cover, the engaging projections 9c, 9c formed on the stator 7 are provided.
The outer structure of d and the entire structure of the valve body 1 are the same as those of the above-described conventional structure, and a description thereof will be omitted.
【０００９】[0009]
【作用】次に、本発明の作用を図３および図４に基づい
て説明する。本発明に係る固定子コイル７の係合突部９
ｃ、９ｄに作用する基本的な力として、弁本体１の脱着
時には図３に示すような軸方向の引張力ｆ1 が作用し、
弁本体１の回転に対してはボディ８の六角材平坦部８ａ
から係合突部９ｃを押し倒す半径方向の力ｆ2 が作用す
る。また輸送時、あるいは取り扱い時、落下時など外部
力として主に係合突部９ｃ、９ｄを押し倒す力ｆ2 が作
用する。Next, the operation of the present invention will be described with reference to FIGS. Engaging projection 9 of stator coil 7 according to the present invention
As a basic force acting on c and 9d, an axial tensile force f1 as shown in FIG.
Hexagonal flat portion 8a of body 8 against rotation of valve body 1
A radial force f2 acts to push down the engaging projection 9c. In addition, a force f2 that mainly pushes down the engaging projections 9c and 9d acts as an external force such as during transportation, handling, and dropping.
【００１０】ここで、引張力ｆ1 に対しては、樹脂モー
ルド材１１より引張強度の高い金属の爪１４が引張力ｆ
2 の抗力を大きくするために係合突部全体９ｃ、９ｄと
しての強度はアップする。特に、図４に示すように爪１
４の先端形状が根元より大きい様な場合、また爪１４が
少し傾いている時などは引張力に対する爪１４の抗力が
大きくなり、強度アップには効果的である。Here, with respect to the tensile force f1, the metal claws 14 having a higher tensile strength than the resin molding material 11 have a tensile force f1.
In order to increase the drag of No. 2, the strength of the entire engaging projections 9 c and 9 d is increased. In particular, as shown in FIG.
When the tip 4 has a shape larger than the root, or when the claw 14 is slightly inclined, the resistance of the claw 14 against the tensile force increases, which is effective for increasing the strength.
【００１１】係合突部９ｃ、９ｄを折し倒す方向に作用
する力ｆ2 に対しても、応力が集中し強度が最も必要と
される根元付近は金属の爪１４の作用により強度が向上
する。その他、ステータカバー６を切り起こして立設し
た爪１４の跡にできる抜き穴１５内に樹脂モールド材１
１が侵入することにより、樹脂モールド材１１の厚みが
増し、強度をさらに上げる効果や、モールド成形時に抜
き穴１５を通してステータカバー内のコイル５側への樹
脂の流れを良くする二次的効果もある。With respect to the force f2 acting in the direction in which the engaging projections 9c and 9d are folded down, the stress is concentrated and the strength is improved by the action of the metal claws 14 near the root where the strength is most needed. . In addition, the resin molding material 1 is inserted into a hole 15 formed in the trace of the claw 14 which is formed by cutting and raising the stator cover 6.
The intrusion of 1 increases the thickness of the resin molding material 11 and further increases the strength, and also has a secondary effect of improving the flow of resin to the coil 5 side in the stator cover through the punched hole 15 during molding. is there.
【００１２】また、より大きな力が作用した場合でも、
係合突部９ｃ、９ｄにクラックが入るものの、係合突部
９ｃ、９ｄが爪１４により保持されるため、固定子コイ
ル７と弁本体１を固定保持するという機能を果たすこと
ができる。これに比較して、爪１４の無い従来の固定子
コイル７では係合突部９ｃ、９ｄが欠落し、場合によっ
ては機能を損なうおそれがある。さらに、製造時に係合
突部９ｃ、９ｄにクラックが入ってもクラックの進行が
爪１４の金属部分で止められる作用もある。Further, even when a larger force is applied,
Although the engagement projections 9c and 9d are cracked, the engagement projections 9c and 9d are held by the claws 14, so that the function of fixing and holding the stator coil 7 and the valve body 1 can be achieved. In comparison, in the conventional stator coil 7 without the claws 14, the engaging projections 9c and 9d are missing, and the function may be impaired in some cases. Further, even if a crack enters the engaging projections 9c and 9d during manufacturing, the crack can be stopped by the metal portion of the claw 14.
【００１３】ここで係合突部の具体的な強度測定例を示
すと、本発明者の実験によれば、引張強度として爪１４
有品は爪無し品と比較して、１．３倍の値が確認でき
た。また、耐折れ強度として爪１４有品は爪無し品と比
較して、１．４倍の値が確認できた。Here, a specific example of the measurement of the strength of the engaging projection is shown.
The value of the product was 1.3 times that of the product without nails. In addition, the value of the anti-bending strength of the product with the nail 14 was confirmed to be 1.4 times that of the product without the nail.
【００１４】[0014]
【発明の効果】以上のように、本発明によれば、係合突
部９ｃ、９ｄは脆い樹脂モールド材１１の中に強度のあ
る金属の爪１４が芯として存在するだけでなく、ステー
タカバー６を切り起こして立設した爪１４の跡にできる
抜き穴１５内に樹脂モールド材１１が侵入することによ
り、樹脂モールド材１１の厚みが増すため、係合突部９
ｃ、９ｄに作用する力に対し強度を向上することができ
る。従って、弁本体１と固定子コイル７の組立時やメン
テナンス時などの着脱時、あるいは輸送時の破損防止が
図れ、産業上の効果は大なるものである。As described above, according to the present invention, the engaging projections 9c and 9d not only have the strong metal claws 14 as the core in the brittle resin mold material 11, but also have the stator cover. When the resin molding material 11 enters into the hole 15 formed in the trace of the claw 14 that is formed by cutting and raising the resin protrusion 6, the thickness of the resin molding material 11 increases.
The strength against the force acting on c and 9d can be improved. Therefore, the valve body 1 and the stator coil 7 can be prevented from being damaged at the time of assembling or maintenance such as at the time of assembly or maintenance, or at the time of transportation, and the industrial effect is great.
【図１】本発明に係る電動膨張弁の固定子コイルの一実
施例を示す縦断図。FIG. 1 is a longitudinal sectional view showing an embodiment of a stator coil of an electric expansion valve according to the present invention.
【図２】本発明に係るステータカバーの一実施例を示す
斜視図。FIG. 2 is a perspective view showing one embodiment of a stator cover according to the present invention.
【図３】本発明に係る固定子コイルの係合突部に作用す
る力の状態を示す図。FIG. 3 is a diagram showing a state of a force acting on an engagement protrusion of the stator coil according to the present invention.
【図４】本発明に係るステータカバーの爪の一実施例を
示す縦断面図。FIG. 4 is a longitudinal sectional view showing one embodiment of a pawl of a stator cover according to the present invention.
【図５】従来の電動膨張弁の縦断面図。FIG. 5 is a longitudinal sectional view of a conventional electric expansion valve.
【図６】従来の電動膨張弁の弁本体と固定子コイルの組
立状況を示す斜視図。FIG. 6 is a perspective view showing an assembly state of a valve body and a stator coil of a conventional electric expansion valve.
１ 弁本体 ２ 弁座 ３ａ 針状弁
４ 回転子 ５ コイル ６ ステータカバー ７ 固定子コ
イル ８ ボディ ８ａ 六角材平坦部 ８ｂ 凹溝 ９ａ 当り面
９ｂ 溝 ９ｃ 係合突部 ９ｄ 係合突部 １０ フック １１ 樹脂モールド材 １２ 係合部 １３ 穴
１４ 爪 １５ 抜き穴。DESCRIPTION OF SYMBOLS 1 Valve main body 2 Valve seat 3a Needle valve 4 Rotor 5 Coil 6 Stator cover 7 Stator coil 8 Body 8a Hexagonal material flat part 8b Depression groove 9a Contact surface 9b Groove 9c Engagement projection 9d Engagement projection 10 Hook 11 Resin molding material 12 Engagement part 13 hole
14 Claws 15 Holes.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 31/04 - 31/05 F25B 41/06 H02K 3/46 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) F16K 31/04-31/05 F25B 41/06 H02K 3/46
Claims (1)
合突部９ｃ、９ｄを樹脂モールド材１１で固定子コイル
７全体と一体的に形成し、弁本体１の六角材平坦部８ａ
を当接させる当たり面９ａを備えると共にフック１０を
係止させる溝９ｂを備えた係合突部９ｄ、９ｄを樹脂モ
ールド材１１と一体的に設け、前記フック１０を弁本体
１の円筒部に形成されたリング状の凹溝８ｂに嵌め込む
ことにより弁本体１と固定子コイル７を着脱自在に固定
できるようにした電動膨張弁において、 前記係合突部９ｃ、９ｄ、９ｄに位置する部分における
コイル５を包む金属製のステータカバー６を切り起こし
て爪１４を立設すると共に、該爪１４の周囲を樹脂モー
ルド材１１で覆うようにしたことを特徴とする電動膨張
弁の固定子コイルの構造。An engaging projection is formed integrally with a stator coil having a built-in coil and a resin molding material integrally with the stator coil to form a hexagonal flat portion of a valve body.
An engaging projection 9d, 9d having a contact surface 9a and a groove 9b for locking the hook 10 is provided integrally with the resin molding material 11, and the hook 10 is attached to the cylindrical portion of the valve body 1. The valve body 1 and the stator coil 7 are detachably fixed by being fitted in the formed ring-shaped concave groove 8b.
In the motor-operated expansion valve, the metal stator cover 6 surrounding the coil 5 at the portions located at the engagement protrusions 9c, 9d, and 9d is cut and raised, and the claws 14 are erected. A structure of a stator coil of an electric expansion valve, wherein the periphery is covered with a resin molding material 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30312394A JP3328453B2 (en) | 1994-11-11 | 1994-11-11 | Structure of stator coil of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30312394A JP3328453B2 (en) | 1994-11-11 | 1994-11-11 | Structure of stator coil of electric expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08135828A JPH08135828A (en) | 1996-05-31 |
| JP3328453B2 true JP3328453B2 (en) | 2002-09-24 |
Family
ID=17917164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30312394A Expired - Fee Related JP3328453B2 (en) | 1994-11-11 | 1994-11-11 | Structure of stator coil of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3328453B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100734344B1 (en) * | 2004-12-21 | 2007-07-02 | 자화전자 주식회사 | A Fixing apparatus of stator for an electromotive expansion valve |
| JP5850799B2 (en) * | 2012-05-24 | 2016-02-03 | 株式会社不二工機 | Motorized valve |
| KR101857532B1 (en) * | 2013-09-30 | 2018-06-19 | 쯔지앙 산화 인텔리전트 컨트롤스 씨오., 엘티디. | Electronic expansion valve and coil device for same |
| CN107084559B (en) * | 2017-05-25 | 2019-06-25 | 扬州松源管阀有限公司 | A kind of removable expansion valve easy to disassemble |
-
1994
- 1994-11-11 JP JP30312394A patent/JP3328453B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08135828A (en) | 1996-05-31 |
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| LAPS | Cancellation because of no payment of annual fees |