JPH0638365B2 - Variable resistor - Google Patents
Variable resistorInfo
- Publication number
- JPH0638365B2 JPH0638365B2 JP62326433A JP32643387A JPH0638365B2 JP H0638365 B2 JPH0638365 B2 JP H0638365B2 JP 62326433 A JP62326433 A JP 62326433A JP 32643387 A JP32643387 A JP 32643387A JP H0638365 B2 JPH0638365 B2 JP H0638365B2
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- arm
- variable resistor
- slider
- substrate
- 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 - Lifetime
Links
Landscapes
- Adjustable Resistors (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、可変抵抗器、特に、その摺動子の形状に関す
る。TECHNICAL FIELD The present invention relates to a variable resistor, and more particularly to the shape of a slider thereof.
（従来技術とその問題点） 従来、可変抵抗器としては、第４図(A)から(C)に示すも
のが良く知られている。これは、基板１上に略円弧状の
抵抗体２を設け、基板１の中心孔1aに位置する端子８の
筒部８ａをかしめて摺動子３を回転可能に取り付けたも
のである。摺動子３は外周の一部に円弧状に形成したア
ーム部４の突部４ａが抵抗体２に接触し、かつ、マイナ
スドライバで調整が可能な溝部５を有している。また、
2a,2aは外部電極であり、抵抗体２の両端にそれぞれ接
続されている。(Prior Art and Its Problems) Conventionally, as variable resistors, those shown in FIGS. 4 (A) to 4 (C) are well known. In this structure, a substantially arcuate resistor 2 is provided on a substrate 1, and a cylindrical portion 8a of a terminal 8 located in a central hole 1a of the substrate 1 is caulked to attach a slider 3 rotatably. The slider 3 has a groove 5 which is formed on a part of the outer periphery of the arm 4 so that the protrusion 4a of the arm 4 contacts the resistor 2 and which can be adjusted by a minus driver. Also,
External electrodes 2a and 2a are connected to both ends of the resistor 2, respectively.
しかしながら、この可変抵抗器では、アーム部４が外部
に対していわばむき出しの状態であるため、回路基板へ
の実装時や調整時に外力が加わつて変形しやすく、接触
不良を招来するという問題点があつた。また、吸引式の
チツププレーサで実装する場合、第５図に示すように、
摺動子３上のチツププレーサの吸引面として利用できる
面積（第５図中斜線を付した部分）が小さいため、チツ
ププレーサから可変抵抗器が落下してしまうおそれがあ
り、実装時の信頼性が低いという問題点があつた。However, in this variable resistor, since the arm portion 4 is in a state of being barely exposed to the outside, there is a problem in that it is easily deformed due to an external force applied during mounting on a circuit board or during adjustment, resulting in poor contact. Atsuta When mounting with a suction type chip placer, as shown in FIG.
Since the area that can be used as the suction surface of the chip placer on the slider 3 (the shaded portion in FIG. 5) is small, the variable resistor may drop from the chip placer, and the reliability during mounting is low. There was a problem.
一方、第６図(A)から(C)に示す様に、端子８の筒部８ａ
に保持されたロータ６を摺動子３と一体に回転可能に設
けた可変抵抗器も知られている。なお、前記従来の可変
抵抗器と同一部品は同一符号を付した。この可変抵抗器
では、アーム部４がロータ６によつて保護されており、
実装時や調整時にアーム部が変形してしまうことがな
い。また、マイナスドライバ用の溝７が形成されたロー
タ６は、チツププレーサの吸引面として利用できる広い
面積を上面に有しているため、実装時の信頼性が高い。On the other hand, as shown in FIGS. 6 (A) to 6 (C), the cylindrical portion 8a of the terminal 8 is
There is also known a variable resistor in which the rotor 6 held by the slider is rotatably provided integrally with the slider 3. The same parts as those of the conventional variable resistor are designated by the same reference numerals. In this variable resistor, the arm portion 4 is protected by the rotor 6,
The arm does not deform during mounting or adjustment. Further, the rotor 6 in which the slot 7 for the minus driver is formed has a large area which can be used as the suction surface of the chip placer on the upper surface, and therefore has high reliability in mounting.
しかしながら、ロータ６を設けた分だけ嵩高くなり、し
かも、部品点数が１点増加し、ロータ６の位置決めも困
難であるため、全体としてコストアツプを招来するとい
う新たな問題点を有している。However, since the rotor 6 is provided, the volume is increased, the number of parts is increased by one, and the positioning of the rotor 6 is also difficult. Therefore, there is a new problem that the cost is increased as a whole.
（問題点を解決するための手段） そこで、本発明に係る可変抵抗器は、１枚の導電性薄板
から、中央に略皿状の突部が形成されるとともに、前記
突部から径方向外側に向け、マイナスドライバ用の溝部
が形成されたドライバプレート部と、接点部が形成され
た略リング状のアーム部とを連結した状態で打ち抜くと
ともに、連結部で１８０°折り返して前記突部をアーム
部から突出せしめ、前記突部により前記基板に取付けら
れた摺動子を備えるようにした。(Means for Solving the Problems) Therefore, in the variable resistor according to the present invention, a substantially dish-shaped projection is formed in the center from one conductive thin plate, and the projection is radially outward from the projection. The punching in a state where the driver plate portion in which the slot for the minus driver is formed and the substantially ring-shaped arm portion in which the contact portion is formed are connected to each other, and is folded back by 180 at the connecting portion to arm the protrusion. The protrusion is provided with a slider attached to the substrate by the protrusion.
（作用） 以上の構成において、摺動子はドライバプレート部の皿
状突部で基板上に回転可能に保持され、アーム部の外方
にドライバプレート部が位置し、アーム部に外力が作用
して変形するおそれは除去される。また、ドライバプレ
ート部とアーム部とはラツプする様に折り返えされてお
り、ロータを用いないことと相俟つて薄型である。さら
に、ドライバプレート部がアーム部と独立しているこ
と、およびプラスドライバ用ではなくマイナスドライバ
用の溝部が形成されていることにより、ドライバプレー
ト部はチツププレーサの吸引面として利用できる充分に
広い面積を上面に有しており、チツププレーサで確実に
吸引することができ、実装時の信頼性が高い。さらに、
アーム部の長さが従来のものの約２倍になつているた
め、ばね特性が向上し、抵抗体の接点圧が安定してお
り、信頼性が高い。(Operation) In the above configuration, the slider is rotatably held on the substrate by the dish-shaped protrusion of the driver plate, the driver plate is located outside the arm, and an external force acts on the arm. The risk of deformation is eliminated. Further, the driver plate portion and the arm portion are folded back so as to be trapped, which is thin in combination with not using the rotor. Further, since the driver plate portion is independent of the arm portion and the groove portion for the minus driver, not for the plus driver, is formed, the driver plate portion has a sufficiently large area that can be used as the suction surface of the chip placer. Since it has it on the upper surface, it can be surely sucked with a chip placer, and has high reliability during mounting. further,
Since the length of the arm portion is about twice that of the conventional one, the spring characteristics are improved, the contact pressure of the resistor is stable, and the reliability is high.
（実施例） 以下、本発明に係る可変抵抗器の一実施例を第１図(A)
から(C)、および第２図(A)から(C)を参照して説明す
る。(Embodiment) An embodiment of a variable resistor according to the present invention is shown in FIG. 1 (A).
To (C) and FIGS. 2 (A) to (C).
この可変抵抗器は、抵抗体１２を有する基板１０と、摺
動子１５と、端子２０とから構成されている。This variable resistor includes a substrate 10 having a resistor 12, a slider 15 and a terminal 20.
抵抗体１２は、基板１０上に孔１１を中心とした略円弧
状に設置され、さらに、抵抗体１２の両端には、基板１
０の側面から裏面にかけて形成された外部電極12a,12a
が接続されている。The resistor 12 is installed on the substrate 10 in a substantially arcuate shape with the hole 11 as the center, and further, on both ends of the resistor 12, the substrate 1 is provided.
External electrodes 12a, 12a formed from the side surface to the back surface of 0.
Are connected.
摺動子１５はドライバプレート部１６とアーム部１７と
をラツプする様に折り返した構成からなる。即ち、摺動
子１５は１枚の導電性薄板から、中央に略皿状の突部16
aが形成されたドライバプレート部１６と、突出した接
点部17aが形成された略リング状のアーム部１７と連結
した状態で打ち抜き、連結部１８で１８０°折り返して
製作され、突部16aはアーム部１７から下方に突出して
いる。ドライバプレート部１６の外径はアーム部１７の
外径より若干大きく、ドライバプレート部１６にはマイ
ナスドライバにて調整可能な溝部１９が形成されてい
る。また、アーム部１７には接点部17aを中心に円周方
向にスリット17bが形成され、抵抗体１２に対して接触
抵抗変化の少ない２点接触を確保する様になつている。The slider 15 has a structure in which a driver plate portion 16 and an arm portion 17 are folded back so as to be wrapped. That is, the slider 15 is made of one conductive thin plate and has a substantially dish-shaped protrusion 16 at the center.
The driver plate portion 16 formed with a and the substantially ring-shaped arm portion 17 on which the protruding contact portion 17a is formed are punched out in a state of being connected, and the connecting portion 18 is folded back by 180 °. It projects downward from the portion 17. The outer diameter of the driver plate portion 16 is slightly larger than the outer diameter of the arm portion 17, and the driver plate portion 16 is provided with a groove portion 19 which can be adjusted by a minus driver. Further, the arm portion 17 is formed with a slit 17b in the circumferential direction around the contact portion 17a so as to ensure a two-point contact with the resistor 12 with a small change in contact resistance.
以上の構成からなる摺動子１５は、基板１０の孔１１に
挿通した端子２０の筒部２１を突部16aの孔16bに係合さ
せてかしめることにより、基板１０上で抵抗体１２と同
心円で回転可能に保持される。このとき、接点部17aは
アーム部１７のばね力のみならず、連結部１８等のばね
力が作用して抵抗体１２上に良好なばね圧で接触するこ
ととなる。In the slider 15 having the above-described structure, the cylindrical portion 21 of the terminal 20 inserted into the hole 11 of the substrate 10 is engaged with the hole 16b of the protrusion 16a to be caulked, so that the resistor 12 is formed on the substrate 10. It is rotatably held in a concentric circle. At this time, not only the spring force of the arm portion 17 but also the spring force of the connecting portion 18 acts on the contact point portion 17a so that the contact point portion 17a comes into contact with the resistor 12 with a good spring pressure.
（発明の効果） 以上の説明から明らかなように、本発明の可変抵抗器
は、１枚の導電性薄板から、中央に略皿状の突部が形成
されるとともに、前記突部から径方向外側に向け、マイ
ナスドライバ用の溝部が形成されたドライバプレート部
と、接点部が形成された略リング状のアーム部とを連結
した状態で打ち抜くとともに、連結部で１８０°折り返
して、前記突部をアーム部から突出せしめ、前記突部に
より前記基板に取付けられた摺動子を備えたため、アー
ム部の外方にドライバプレート部が位置してアーム部を
ガードすることとなり、実装時や調整時にアーム部が変
形してしまうおそれがない。また、ドライバプレート部
がアーム部と独立していること、およびプラスドライバ
用ではなくマイナスドライバ用の溝部が形成されている
ことにより、第３図に示すように、ドライバプレート部
はチツププレーサの吸引面として利用できる充分に広い
面積（第３図中斜線を付した部分）を上面に有してお
り、チツププレーサで確実に吸引することができ、実装
時の信頼性が高い。さらに、ロータ付きのものに比べて
薄型であり、しかも部品数が少なく、組立ても容易であ
り、安価に製作できる。また、摺動子のアーム部の長さ
が従来のものの約２倍になつているため、ばね特性が向
上し、抵抗体への接点圧が安定しており、信頼性が高
い。(Effects of the Invention) As is clear from the above description, the variable resistor of the present invention has a substantially dish-shaped projection formed in the center from one conductive thin plate, and a radial direction from the projection. Toward the outside, a driver plate portion having a slot for a minus driver and a substantially ring-shaped arm portion having a contact portion formed therein are punched out in a connected state, and are folded back by 180 ° at the connecting portion to form the protrusion. Since the slider is attached to the board by the protrusion, the driver plate is positioned outside the arm to protect the arm, and the arm is guarded during mounting and adjustment. There is no fear that the arm will be deformed. Further, as shown in FIG. 3, the driver plate portion is independent of the arm portion and the groove portion for the minus driver, not for the plus driver, is formed, so that the driver plate portion has a suction surface of the chip placer. Has a sufficiently large area (hatched portion in FIG. 3) that can be used as a sheet, which can be reliably sucked by the chip placer, and has high reliability during mounting. Further, it is thinner than the one with a rotor, has a small number of parts, is easy to assemble, and can be manufactured at low cost. Moreover, since the length of the arm portion of the slider is about twice that of the conventional one, the spring characteristics are improved, the contact pressure to the resistor is stable, and the reliability is high.
第１図(A)は本発明の可変抵抗器の一実施例を示す平面
図、第１図(B)はその側断面図、第１図(C)はその底面
図、第２図(A)はその実施例に使用した摺動子を示す平
面図、第２図(B)はその側断面図、第２図(C)はその底面
図、第３図はその可変抵抗器のチツププレーサの吸引面
として利用できる部分に斜線を付した平面図、第４図
(A)は従来の可変抵抗器を示す平面図、第４図(B)はその
側断面図、第４図(C)はその底面図、第５図はそのチツ
ププレーサの吸引面として利用できる部分に斜線を付し
た平面図、第６図(A)はさらに別の従来の可変抵抗器を
示す平面図、第６図(B)はその側断面図、第６図(C)はそ
の底面図である。 １０……基板、１２……抵抗体、１５……摺動子、１６
……ドライバプレート部、16a……突部、１７……アー
ム部、17a……接点部、１８……連結部、１９……マイ
ナスドライバ用の溝部、２０……端子。1A is a plan view showing an embodiment of the variable resistor of the present invention, FIG. 1B is a side sectional view thereof, FIG. 1C is a bottom view thereof, and FIG. ) Is a plan view showing a slider used in the embodiment, FIG. 2 (B) is a side sectional view thereof, FIG. 2 (C) is a bottom view thereof, and FIG. 3 is a chip placer of the variable resistor. Fig. 4 is a plan view with shaded areas that can be used as a suction surface.
(A) is a plan view showing a conventional variable resistor, FIG. 4 (B) is a side sectional view thereof, FIG. 4 (C) is a bottom view thereof, and FIG. 5 is a portion usable as a suction surface of the chip placer. 6A is a plan view showing another conventional variable resistor, FIG. 6B is a side sectional view thereof, and FIG. 6C is a bottom view thereof. Is. 10 ... Substrate, 12 ... Resistor, 15 ... Slider, 16
...... Driver plate part, 16a …… Projection part, 17 …… Arm part, 17a …… Contact part, 18 …… Coupling part, 19 …… Minus driver groove, 20 …… Terminal.
Claims (1)
抗体の中心部を支点として回転可能な摺動子のアーム部
を接触させた可変抵抗器において、 １枚の導電性薄板から、中央に略皿状の突部が形成され
るとともに、前記突部から径方向外側に向け、マイナス
ドライバ用の溝部が形成されたドライバプレート部と、
接点部が形成された略リング状のアーム部とを連結した
状態で打ち抜くとともに、連結部で１８０°折り返して
前記突部をアーム部から突出せしめ、前記突部により前
記基板に取付けられた摺動子を備えたこと、 を特徴とする可変抵抗器。1. A variable resistor comprising a substantially circular arc-shaped resistor provided on a substrate, and an arm portion of a slider which is rotatable about a central portion of the resistor as a fulcrum. A driver plate portion in which a thin plate-shaped protrusion is formed in the center in the center and a groove portion for a minus driver is formed radially outward from the protrusion,
It is punched in a state of being connected to a substantially ring-shaped arm portion in which a contact point portion is formed, and is folded back by 180 ° at the connecting portion so that the protruding portion protrudes from the arm portion, and the sliding attached to the substrate by the protruding portion. A variable resistor characterized by having a child.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62326433A JPH0638365B2 (en) | 1987-12-23 | 1987-12-23 | Variable resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62326433A JPH0638365B2 (en) | 1987-12-23 | 1987-12-23 | Variable resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01168003A JPH01168003A (en) | 1989-07-03 |
| JPH0638365B2 true JPH0638365B2 (en) | 1994-05-18 |
Family
ID=18187749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62326433A Expired - Lifetime JPH0638365B2 (en) | 1987-12-23 | 1987-12-23 | Variable resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0638365B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003067278A2 (en) * | 2002-02-08 | 2003-08-14 | Lockheed Martin Corporation | System and method for doppler track correlation for debris tracking |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3242451A (en) * | 1964-02-18 | 1966-03-22 | Bourns Inc | Gear actuated variable resistor |
| JPS59127219U (en) * | 1983-02-15 | 1984-08-27 | 松下電器産業株式会社 | small variable resistor |
| JPS6041013U (en) * | 1983-08-30 | 1985-03-23 | 創伸電機株式会社 | Chip type semi-fixed volume |
| JPS61114805U (en) * | 1984-12-28 | 1986-07-19 |
-
1987
- 1987-12-23 JP JP62326433A patent/JPH0638365B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01168003A (en) | 1989-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
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