JP2003124009A - Variable resistor - Google Patents
Variable resistorInfo
- Publication number
- JP2003124009A JP2003124009A JP2001320337A JP2001320337A JP2003124009A JP 2003124009 A JP2003124009 A JP 2003124009A JP 2001320337 A JP2001320337 A JP 2001320337A JP 2001320337 A JP2001320337 A JP 2001320337A JP 2003124009 A JP2003124009 A JP 2003124009A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- substrate
- resistor
- variable resistor
- lubricating layer
- 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
Links
Landscapes
- Adjustable Resistors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、可変抵抗器、特
に、回転可能な回転軸に取り付けた摺動子が基板上の抵
抗体及び集電体上を摺動して抵抗値を調整するようにし
た可変抵抗器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable resistor, and more particularly to a slider mounted on a rotatable rotary shaft so as to slide on a resistor and a current collector on a substrate to adjust the resistance value. To the variable resistor.
【0002】[0002]
【従来の技術】従来、摺動子を備えた回転型の可変抵抗
器としては、特開2000−138109号公報に記載
のものが知られている。この可変抵抗器は、図9〜11
に示すように、樹脂成形品からなる基板100は中心孔
101を有し、第1及び第2の端子112,113が埋
設されている。端子112,113の端部112a,1
13aは基板100の側面から突出し、他端部112
b,113bは基板100の上面に露出している。基板
100上には集電体104が円環状に、抵抗体105が
略円環状に、同心円上に形成されている。集電体104
は端子112の他端部112bと接続され、抵抗体10
5の互いに対向する両端部105aは引出し電極106
を介して端子113の他端部113bと接続されてい
る。2. Description of the Related Art Conventionally, as a rotary type variable resistor provided with a slider, one disclosed in Japanese Patent Laid-Open No. 2000-138109 is known. This variable resistor is shown in FIGS.
As shown in FIG. 3, a substrate 100 made of a resin molded product has a center hole 101, and first and second terminals 112 and 113 are embedded. Ends 112a, 1 of the terminals 112, 113
13a projects from the side surface of the substrate 100, and the other end 112
b and 113b are exposed on the upper surface of the substrate 100. On the substrate 100, a current collector 104 is formed in an annular shape, and a resistor 105 is formed in an approximately annular shape in concentric circles. Current collector 104
Is connected to the other end 112b of the terminal 112, and the resistor 10
The opposite ends 105a of the electrode 5 are connected to the extraction electrode 106.
It is connected to the other end portion 113b of the terminal 113 via.
【0003】基板100の中心孔101には、導電材か
らなる摺動子108を備えた樹脂成形品からなる回転軸
107が回転自在に装着されている。この摺動子108
には抵抗体105上を摺動する接片108a及び集電体
104上を摺動する接片108bが形成されており、接
片108a,108bの回転位置に応じて端子112,
113間の抵抗値が調整される。また、基板100上に
は樹脂成形品からなるカバー109が取り付けられてい
る。In the center hole 101 of the substrate 100, there is rotatably mounted a rotary shaft 107 made of a resin molded product having a slider 108 made of a conductive material. This slider 108
Is formed with a contact piece 108a that slides on the resistor 105 and a contact piece 108b that slides on the current collector 104. Depending on the rotational position of the contact pieces 108a and 108b, the terminals 112,
The resistance value between 113 is adjusted. Further, a cover 109 made of a resin molded product is attached on the substrate 100.
【0004】[0004]
【発明が解決しようとする課題】ところで、図9〜11
に示した可変抵抗器において、集電体104は銀等の良
導電材を含むペーストを塗布、焼成して基板100上に
形成され、第1の端子112の他端部112bとは物理
的な所定の接合強度を有している。しかし、この接合は
金属材(端子112)とペーストの焼成物(集電体10
4)という異種物体間の接合であり、必ずしも強固なも
のではなかった。即ち、端子112をカットしたり、曲
げ加工する際の負荷や、基板100と集電体104の熱
膨張係数の差に起因して発生するストレスによって前記
接合が剥離しやすく、電気部品としての信頼性に問題点
を有していた。さらに、銀は硫化して接触抵抗が大きく
なるという品質上の問題点をも有していた。[Problems to be Solved by the Invention]
In the variable resistor shown in FIG. 3, the current collector 104 is formed on the substrate 100 by applying and firing a paste containing a good conductive material such as silver, and is physically different from the other end 112 b of the first terminal 112. It has a predetermined bonding strength. However, this bonding is performed by burning the metal material (terminal 112) and the paste (collector 10).
It was a joint between different kinds of objects called 4) and was not necessarily strong. That is, the connection is likely to be peeled off due to a stress generated due to a load when cutting or bending the terminal 112 or a difference in thermal expansion coefficient between the substrate 100 and the current collector 104, and reliability as an electric component. There was a problem with sex. Further, silver has a problem in quality that it is sulfurized to increase the contact resistance.
【0005】また、集電体104は基板100上にペー
ストを塗布、焼成して形成するため、設備や工程が増加
し、コストアップを招来していた。Further, since the current collector 104 is formed by applying a paste on the substrate 100 and firing it, the number of facilities and processes is increased, and the cost is increased.
【0006】そこで、本発明の目的は、端子と集電体と
の接続の信頼性が高く、コストダウンを図ることのでき
る可変抵抗器を提供することにある。Therefore, an object of the present invention is to provide a variable resistor which has a highly reliable connection between a terminal and a current collector and which can reduce the cost.
【0007】[0007]
【課題を解決するための手段及び作用】以上の目的を達
成するため、本発明に係る可変抵抗器は、樹脂材からな
る基板上に、第1及び第2の端子とそれぞれ電気的に導
通状態にある集電体及び抵抗体を同心円上に設けると共
に、摺動子を取り付けた回転軸を該摺動子が集電体及び
抵抗体上を摺動可能に前記基板に取り付けた可変抵抗器
において、前記集電体は前記第1の端子と一体的に形成
された円環状又は略円環状の金属材からなり、前記基板
の表面に露出しており、前記摺動子の回転位置に応じて
前記集電体及び抵抗体の延面長さが変更されることによ
り、前記第1及び第2の端子間の抵抗値が調整されるこ
とを特徴とする。In order to achieve the above objects, the variable resistor according to the present invention is electrically connected to the first and second terminals on a substrate made of a resin material. In a variable resistor in which a current collector and a resistor are provided on a concentric circle, and a rotary shaft having a slider is attached to the substrate so that the slider can slide on the current collector and the resistor. , The current collector is made of an annular or substantially annular metal material integrally formed with the first terminal, is exposed on the surface of the substrate, and corresponds to the rotational position of the slider. The resistance value between the first and second terminals is adjusted by changing the length of the extended surface of the current collector and the resistor.
【0008】本発明に係る可変抵抗器において、第1の
端子と集電体とは一つの金属材からなり、接合部分は存
在しない。従って、端子に負荷が作用したり、集電体に
熱ストレスが作用したりしても、第1の端子と集電体と
の間に電気的特性劣化や動作不良、不能といった機能障
害が発生することはない。また、集電体は端子と一体的
に取り扱って金属材のカットや樹脂成形品(基板)への
インサートを行えばよく、ペーストの塗布、焼成という
工程で形成する必要がなくなる。In the variable resistor according to the present invention, the first terminal and the current collector are made of one metal material and have no joint portion. Therefore, even if a load is applied to the terminal or a thermal stress is applied to the current collector, a functional failure such as deterioration of electrical characteristics, malfunction, or failure occurs between the first terminal and the current collector. There is nothing to do. Further, the current collector may be handled integrally with the terminal and cut into a metal material or may be inserted into a resin molded product (substrate), and it is not necessary to form the current collector by a process of applying and firing a paste.
【0009】特に、前記集電体上には導電性潤滑層を設
けることが好ましい。集電体が金属材であると摺動子の
摺動によって摩耗が促進されるが、潤滑層を設けておけ
ば摩耗が少なくなり、長寿命とすることができる。そし
て、この導電性潤滑層は前記抵抗体と同一材料とすれ
ば、抵抗体と同じ工程で塗布(例えば、スクリーン印
刷)することができる。In particular, it is preferable to provide a conductive lubricating layer on the current collector. If the current collector is made of a metal material, wear is promoted by sliding of the slider, but if a lubricating layer is provided, wear is reduced and life can be extended. If this conductive lubricating layer is made of the same material as the resistor, it can be applied (for example, screen printing) in the same step as the resistor.
【0010】また、前記導電性潤滑層の幅寸法は前記集
電体の幅寸法と同一又は小さいことが好ましい。こうす
れば、潤滑層は集電体上にのみ形成され、金属材(集電
体)と樹脂材(基板)との熱膨張係数の差によるストレ
スを受けることがなくなり、潤滑層にクラックが発生す
ることが防止される。The width dimension of the conductive lubricating layer is preferably the same as or smaller than the width dimension of the current collector. By doing this, the lubricating layer is formed only on the current collector, and stress due to the difference in thermal expansion coefficient between the metal material (current collector) and the resin material (substrate) is not applied, and cracks occur in the lubricating layer. Is prevented.
【0011】[0011]
【発明の実施の形態】以下、本発明に係る可変抵抗器の
実施形態について、添付図面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a variable resistor according to the present invention will be described below with reference to the accompanying drawings.
【0012】(第1実施形態、図1〜6参照)本発明に
係る可変抵抗器の第1実施形態について、まず、その構
成を図1〜図4を参照して説明する。First Embodiment, See FIGS. 1 to 6 First, the configuration of the first embodiment of the variable resistor according to the present invention will be described with reference to FIGS.
【0013】この可変抵抗器は、樹脂成形品からなる基
板10と、樹脂成形品からなるカバー20と、摺動子3
5を備えた樹脂成形品からなる回転軸30とで構成され
ている。基板10は中心孔11を有し、第1の端子12
及び第2の端子13,13が埋設されている。This variable resistor comprises a substrate 10 made of a resin molded product, a cover 20 made of a resin molded product, and a slider 3.
5 and a rotary shaft 30 made of a resin molded product. The substrate 10 has a central hole 11 and a first terminal 12
And the second terminals 13 and 13 are buried.
【0014】第1の端子12はその端部12a,12a
が基板10の側面から突出し、中央部が円環状の集電体
12bとして基板10の表面に露出している。第1の端
子12はその端部12a,12aと集電体12bとを1
枚の金属材から一体的にカットしたものである。第2の
端子13,13はその端部13aが基板10の側面から
突出し、他端部13bが基板10の表面に露出してい
る。The first terminal 12 has ends 12a, 12a.
Is projected from the side surface of the substrate 10, and the central portion is exposed on the surface of the substrate 10 as an annular current collector 12b. The first terminal 12 has its end portions 12a, 12a and the current collector 12b 1
It is an integrally cut piece of metal material. The end portions 13 a of the second terminals 13, 13 project from the side surface of the substrate 10, and the other end portion 13 b is exposed on the surface of the substrate 10.
【0015】前記端子12,13は、図4に示すよう
に、長尺のフープ材40を所定形状に打ち抜いて形成し
たもので、図示しない成形金型に挿入されて基板10が
成形される。この樹脂成形の後、基板10の表面には抵
抗体15が導電性樹脂材を塗布することにより略円環状
に形成され、抵抗体15の互いに対抗する両端部15a
は前記端子13の他端部13bと接続される。集電体1
2bと抵抗体15とは基板10の表面に同心円上に設け
られ、集電体12bは抵抗体15の内側に位置してい
る。As shown in FIG. 4, the terminals 12 and 13 are formed by punching a long hoop material 40 into a predetermined shape, and are inserted into a molding die (not shown) to mold the substrate 10. After this resin molding, the resistor 15 is formed in a substantially annular shape on the surface of the substrate 10 by applying a conductive resin material, and both end portions 15a of the resistor 15 that oppose each other are formed.
Is connected to the other end 13b of the terminal 13. Current collector 1
2b and the resistor 15 are concentrically provided on the surface of the substrate 10, and the current collector 12b is located inside the resistor 15.
【0016】回転軸30は、中心孔31を有し、フラン
ジ部32の周囲に摺動子35を取り付けたもので、基板
10の中心孔11に回転自在に装着されている。摺動子
35は導電性金属材からなり、抵抗体15上を弾性的に
圧接状態で摺動するブラシ状の第1の接片35aと、集
電体12b上を弾性的に圧接状態で摺動するブラシ状の
第2の接片35bとを有している。The rotary shaft 30 has a center hole 31, and a slider 35 is attached around the flange 32, and is rotatably mounted in the center hole 11 of the substrate 10. The slider 35 is made of a conductive metal material, and the brush-shaped first contact piece 35a that slides on the resistor 15 in an elastically pressed state is slid on the current collector 12b in an elastically pressed state. And a brush-shaped second contact piece 35b that moves.
【0017】回転軸30の中心孔31は、図1(A)に
示すように、円形孔の一部が埋め込まれた形状をなして
いる。中心孔31に図示しない操作シャフトが挿入され
て左右いずれかの方向に回転することにより、回転軸3
0と共に摺動子35が一体的に回転し、接片35a,3
5bの抵抗体15及び集電体12bに対する接触位置が
変化することにより、抵抗体15及び集電体12bの延
面長さが変更され、端子12,13間の抵抗値が調整さ
れる。As shown in FIG. 1A, the central hole 31 of the rotary shaft 30 has a shape in which a part of a circular hole is embedded. An operation shaft (not shown) is inserted into the center hole 31 and is rotated in either the left or right direction, so that the rotation shaft 3
The slider 35 rotates integrally with 0, and the contact pieces 35a, 3
By changing the contact position of 5b with respect to the resistor 15 and the current collector 12b, the extension surface length of the resistor 15 and the current collector 12b is changed, and the resistance value between the terminals 12 and 13 is adjusted.
【0018】カバー20は、回転軸30の上部を位置決
めする中心孔21を有し、基板10にいわゆるスナップ
イン方式で取り付けられている。詳しくは、図6に示す
ように、基板10の側面に上側が傾斜した係合用突部1
0aが形成されており、カバー20の側部に設けた第1
の突片22に突部10aと係合する貫通孔20aが突片
22の厚み方向に形成され、貫通孔20aが突部10a
にスナップイン方式で係合する。さらに、カバー20に
は、基板10の側面10cに位置する第2の突片23が
形成されている。この第2の突片23は、前記端子1
2,13,13との干渉を避けるために櫛歯状に形成さ
れており、側面10cとは面接触するのみで係合するこ
とはない。The cover 20 has a central hole 21 for positioning the upper portion of the rotary shaft 30, and is attached to the substrate 10 by a so-called snap-in method. More specifically, as shown in FIG. 6, the engaging projection 1 having an upper side inclined to the side surface of the substrate 10.
0a is formed, and the first part provided on the side of the cover 20 is formed.
A through hole 20a that engages with the protruding portion 10a is formed in the protruding piece 22 in the thickness direction of the protruding piece 22, and the through hole 20a is formed into the protruding portion 10a.
Snap-in method. Further, the cover 20 is provided with a second projecting piece 23 located on the side surface 10c of the substrate 10. The second projecting piece 23 corresponds to the terminal 1
It is formed in a comb-teeth shape in order to avoid interference with 2, 13, and 13, and does not engage with the side surface 10c but only in surface contact therewith.
【0019】ところで、本第1実施形態の可変抵抗器に
おいて、集電体12bは1枚の金属材から第1の端子1
2と一体的に形成されており、集電体12bと端子12
との間には接合部が介在していない。従って、端子12
に負荷が作用したり、集電体12bに熱ストレスが作用
したとしても、端子12と集電体12bとの間に電気的
特性劣化や動作不良、不能といった機能障害が発生する
ことはない。また、基板10上に集電体を設けるのに、
ペーストの塗布、焼成といった別工程を要することはな
く、集電体12bを端子12と一体的にカットし、金型
へインサートして基板10に設けることができ、製造上
のコストを削減することができる。さらに、銀を含むペ
ーストを使用しないため、銀の硫化により接触抵抗が大
きくなる不具合が生じることもない。By the way, in the variable resistor according to the first embodiment, the current collector 12b is made of one metal material and the first terminal 1.
2 is integrally formed with the current collector 12b and the terminal 12
There is no joint between and. Therefore, the terminal 12
Even if a load is applied to the current collector 12b or a thermal stress is applied to the current collector 12b, no functional failure such as deterioration of electrical characteristics, malfunction, or inability occurs between the terminal 12 and the current collector 12b. In addition, to provide a current collector on the substrate 10,
It is possible to cut the current collector 12b integrally with the terminal 12 and insert it into a mold and provide it on the substrate 10 without requiring a separate process such as paste application and firing, thus reducing manufacturing costs. You can Further, since the paste containing silver is not used, the problem that the contact resistance becomes large due to the sulfuration of silver does not occur.
【0020】(第2実施形態、図7,8参照)次に、本
発明に係る可変抵抗器の第2実施形態について説明す
る。この可変抵抗器は前記第1実施形態と基本的には同
様の構成からなり、異なるのは、図7に示すように、集
電体12b上に導電性潤滑層14を設けた点にある。こ
の潤滑層14は、摺動子35と摩擦抵抗を小さくするカ
ーボンやグラファイトを主成分とする材料が用いられ、
抵抗体15の樹脂成分と近似した樹脂を主成分としてい
る。あるいは、潤滑層14は抵抗体15と同一材料であ
ってもよい。潤滑層14と抵抗体15とを同一材料とす
れば、両者をスクリーン印刷等で同時に塗布することが
でき、作業性が向上する。(Second Embodiment, see FIGS. 7 and 8) Next, a second embodiment of the variable resistor according to the present invention will be described. This variable resistor has basically the same configuration as that of the first embodiment, except that a conductive lubricating layer 14 is provided on the current collector 12b as shown in FIG. The lubricating layer 14 is made of a material containing carbon or graphite as a main component, which reduces frictional resistance with the slider 35.
The main component is a resin similar to the resin component of the resistor 15. Alternatively, the lubricating layer 14 may be made of the same material as the resistor 15. If the lubricating layer 14 and the resistor 15 are made of the same material, both can be simultaneously applied by screen printing or the like, which improves workability.
【0021】本第2実施形態の如く、集電体12b上に
導電性潤滑層14を設ければ、摺動子35との間で生じ
る摩耗が格段に小さくなり、集電体12bの長寿命化を
達成できる。摺動性の向上には、このように潤滑層14
を設ける以外に、接片35a,35bをそれぞれ抵抗体
15と集電体12bに合わせて摺動抵抗が低くなるよう
に表面処理することが考えられる。しかし、摺動子35
という一つの部材の2箇所(接片35a,35b)の処
理仕様を異ならせることは、製造コストを上昇させる要
因となり、好ましいものではない。本第2実施形態で
は、集電体12b上に導電性潤滑層14を設けるという
安価な方法で、集電体12bの寿命を抵抗体15とほぼ
同等まで延ばすことができる。If the conductive lubricating layer 14 is provided on the current collector 12b as in the second embodiment, the wear generated between the current collector 12b and the slider 35 is significantly reduced, and the life of the current collector 12b is extended. Can be achieved. In order to improve the slidability, the lubricating layer 14 is
It is conceivable that the contact pieces 35a and 35b are surface-treated in accordance with the resistor 15 and the current collector 12b so that the sliding resistance is reduced, in addition to the provision of the above. However, the slider 35
Different treatment specifications at two locations (contact pieces 35a, 35b) of one member are not preferable because they increase the manufacturing cost. In the second embodiment, the life of the current collector 12b can be extended to almost the same as that of the resistor 15 by an inexpensive method of providing the conductive lubricating layer 14 on the current collector 12b.
【0022】ところで、図8に示すように、斜線を付し
た潤滑層14の幅寸法Bは集電体12bの幅寸法Aと同
一又は小さいこと、換言すれば、潤滑層14が集電体1
2bをはみ出して基板10上に掛からないことが好まし
い。金属材(集電体12b)と樹脂材(基板10)とは
熱膨張係数が相違し、仮に、潤滑層14が集電体12b
と基板10との双方に跨って形成されていると、熱スト
レスで潤滑層14にクラックが発生するおそれがある。
従って、B≦Aの条件を満たすことにより、潤滑層14
にクラックが発生して接片35bへ悪影響を与える不具
合を未然に防止することができる。By the way, as shown in FIG. 8, the width dimension B of the hatched lubricating layer 14 is the same as or smaller than the width dimension A of the current collector 12b, in other words, the lubricating layer 14 is the current collector 1.
It is preferable that the protrusion 2b does not stick out and hang on the substrate 10. The metal material (current collector 12b) and the resin material (substrate 10) have different coefficients of thermal expansion, and if the lubricating layer 14 is the current collector 12b.
When formed over both the substrate 10 and the substrate 10, cracks may occur in the lubricating layer 14 due to thermal stress.
Therefore, by satisfying the condition of B ≦ A, the lubricating layer 14
It is possible to prevent a problem that a crack is generated on the contact piece and adversely affects the contact piece 35b.
【0023】なお、潤滑層14を設けることによる作用
効果は、従来例である図9〜11に示した可変抵抗器の
集電体104に対して適用しても同様に奏することにな
る。The effect of providing the lubricating layer 14 can be similarly applied to the current collector 104 of the variable resistor shown in FIGS. 9 to 11 which is a conventional example.
【0024】(他の実施形態)なお、本発明に係る可変
抵抗器は前記実施形態に限定するものではなく、その要
旨の範囲内で種々に変更できる。特に、集電体は完全な
円環状ではなく、一部が欠如した略円環状であってもよ
い。(Other Embodiments) The variable resistor according to the present invention is not limited to the above embodiment, but can be variously modified within the scope of the gist thereof. In particular, the current collector may not be a complete annular shape, but may be a substantially annular shape with a part missing.
【0025】[0025]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、集電体を第1の端子と一体的に形成して基板の
表面に露出させたため、集電体と第1の端子との接続信
頼性が高く、集電体を別途基板上に形成する工程が不要
となり、可変抵抗器を安価に製造することができる。さ
らに、集電体には銀を含むペーストを使用していないた
め、銀の硫化による接触抵抗の増大という不具合を生じ
ることもない。As apparent from the above description, according to the present invention, the current collector and the first terminal are formed integrally with the first terminal and exposed on the surface of the substrate. The connection reliability with the terminal is high, the step of separately forming the current collector on the substrate is not required, and the variable resistor can be manufactured at low cost. Furthermore, since the paste containing silver is not used for the current collector, the problem of increase in contact resistance due to sulfuration of silver does not occur.
【0026】また、本発明において、前記集電体上に導
電性潤滑層を設ければ、集電体の長寿命化を図ることが
できる。さらに、この潤滑層を抵抗体と同一材料とすれ
ば、潤滑層と抵抗体とを同一工程で形成することができ
る。さらに、潤滑層の幅寸法を集電体の幅寸法と同一又
は小さくすれば、熱ストレスの影響で潤滑層にクラック
が発生するおそれを回避することができる。Further, in the present invention, if a conductive lubricating layer is provided on the current collector, the life of the current collector can be extended. Furthermore, if this lubricating layer is made of the same material as the resistor, the lubricating layer and the resistor can be formed in the same step. Further, if the width dimension of the lubricating layer is the same as or smaller than the width dimension of the current collector, it is possible to avoid the possibility of cracks in the lubricating layer due to the effect of thermal stress.
【図1】本発明の第1実施形態である可変抵抗器を示
し、(A)は平面図、(B)は側面図。FIG. 1 shows a variable resistor according to a first embodiment of the present invention, (A) is a plan view and (B) is a side view.
【図2】前記可変抵抗器をプリント基板に実装した状態
を示す断面図。FIG. 2 is a cross-sectional view showing a state in which the variable resistor is mounted on a printed board.
【図3】前記可変抵抗器の基板を示す平面図。FIG. 3 is a plan view showing a substrate of the variable resistor.
【図4】前記基板のモールド成形状態を示す平面図。FIG. 4 is a plan view showing a molded state of the substrate.
【図5】前記可変抵抗器のカバーを示す斜視図。FIG. 5 is a perspective view showing a cover of the variable resistor.
【図6】前記基板とカバーとの係合構造の一例を示す断
面図。FIG. 6 is a cross-sectional view showing an example of an engaging structure between the substrate and the cover.
【図7】本発明の第2実施形態である可変抵抗器の基板
を示す平面図。FIG. 7 is a plan view showing a substrate of a variable resistor according to a second embodiment of the present invention.
【図8】集電体と潤滑層との幅寸法の関係を示す説明
図。FIG. 8 is an explanatory diagram showing a relationship between width dimensions of a current collector and a lubricating layer.
【図9】従来の可変抵抗器を示し、(A)は平面図、
(B)は側面図。FIG. 9 shows a conventional variable resistor, (A) is a plan view,
(B) is a side view.
【図10】図9に示した可変抵抗器の断面図。10 is a sectional view of the variable resistor shown in FIG.
【図11】図9に示した可変抵抗器の基板を示す平面
図。11 is a plan view showing a substrate of the variable resistor shown in FIG.
10…基板 12…第1の端子 12b…集電体 13…第2の端子 14…導電性潤滑層 15…抵抗体 30…回転軸 35…摺動子 10 ... Substrate 12 ... first terminal 12b ... Current collector 13 ... second terminal 14 ... Conductive lubricating layer 15 ... Resistor 30 ... Rotary axis 35 ... Slider
Claims (4)
の端子とそれぞれ電気的に導通状態にある集電体及び抵
抗体を同心円上に設けると共に、摺動子を取り付けた回
転軸を該摺動子が集電体及び抵抗体上を摺動可能に前記
基板に取り付けた可変抵抗器において、 前記集電体は前記第1の端子と一体的に形成された円環
状又は略円環状の金属材からなり、前記基板の表面に露
出しており、 前記摺動子の回転位置に応じて前記集電体及び抵抗体の
延面長さが変更されることにより、前記第1及び第2の
端子間の抵抗値が調整されること、 を特徴とする可変抵抗器。1. A first substrate and a second substrate on a substrate made of a resin material.
The current collector and the resistor, which are in electrical connection with the terminals of, respectively, are provided on the concentric circles, and the rotary shaft to which the slider is attached enables the slider to slide on the current collector and the resistor. In the variable resistor attached to the substrate, the current collector is made of an annular or substantially annular metal material integrally formed with the first terminal, and is exposed on a surface of the substrate, The resistance value between the first and second terminals is adjusted by changing the extended surface length of the current collector and the resistor according to the rotational position of the slider. Variable resistor.
とを特徴とする請求項1記載の可変抵抗器。2. The variable resistor according to claim 1, wherein a conductive lubricating layer is provided on the current collector.
料であることを特徴とする請求項2記載の可変抵抗器。3. The variable resistor according to claim 2, wherein the conductive lubricating layer is made of the same material as the resistor.
の幅寸法と同一又は小さいことを特徴とする請求項2又
は請求項3記載の可変抵抗器。4. The variable resistor according to claim 2, wherein the width dimension of the conductive lubricating layer is the same as or smaller than the width dimension of the current collector.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001320337A JP3709827B2 (en) | 2001-10-18 | 2001-10-18 | Variable resistor |
TW091120642A TW569245B (en) | 2001-09-28 | 2002-09-10 | Variable resistor |
KR10-2002-0058914A KR100485047B1 (en) | 2001-09-28 | 2002-09-27 | A variable resistor |
CNB02144451XA CN100421191C (en) | 2001-09-28 | 2002-09-28 | Variable resistor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001320337A JP3709827B2 (en) | 2001-10-18 | 2001-10-18 | Variable resistor |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003124009A true JP2003124009A (en) | 2003-04-25 |
JP3709827B2 JP3709827B2 (en) | 2005-10-26 |
Family
ID=19137741
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JP2001320337A Expired - Fee Related JP3709827B2 (en) | 2001-09-28 | 2001-10-18 | Variable resistor |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7049927B1 (en) | 2005-04-11 | 2006-05-23 | Murata Manufacturing Co., Ltd. | Resistance substrate and variable resistor |
DE102005021022B4 (en) * | 2005-05-06 | 2007-10-25 | Murata Mfg. Co., Ltd., Nagaokakyo | Resistance substrate and variable resistor |
JP2009021455A (en) * | 2007-07-13 | 2009-01-29 | Murata Mfg Co Ltd | Variable resistor |
WO2009072340A1 (en) * | 2007-12-04 | 2009-06-11 | Murata Manufacturing Co., Ltd. | Variable resistor |
JP2015220373A (en) * | 2014-05-19 | 2015-12-07 | 帝国通信工業株式会社 | Rotary electronic component |
CN106784587A (en) * | 2017-01-05 | 2017-05-31 | 南通鼎鑫电池有限公司 | A kind of lithium battery group |
JPWO2016067769A1 (en) * | 2014-10-31 | 2017-07-27 | 株式会社村田製作所 | Rotating variable resistor and method for manufacturing the same |
-
2001
- 2001-10-18 JP JP2001320337A patent/JP3709827B2/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7049927B1 (en) | 2005-04-11 | 2006-05-23 | Murata Manufacturing Co., Ltd. | Resistance substrate and variable resistor |
DE102005021022B4 (en) * | 2005-05-06 | 2007-10-25 | Murata Mfg. Co., Ltd., Nagaokakyo | Resistance substrate and variable resistor |
JP2009021455A (en) * | 2007-07-13 | 2009-01-29 | Murata Mfg Co Ltd | Variable resistor |
WO2009072340A1 (en) * | 2007-12-04 | 2009-06-11 | Murata Manufacturing Co., Ltd. | Variable resistor |
JPWO2009072340A1 (en) * | 2007-12-04 | 2011-04-21 | 株式会社村田製作所 | Variable resistor |
JP2015220373A (en) * | 2014-05-19 | 2015-12-07 | 帝国通信工業株式会社 | Rotary electronic component |
JPWO2016067769A1 (en) * | 2014-10-31 | 2017-07-27 | 株式会社村田製作所 | Rotating variable resistor and method for manufacturing the same |
CN106784587A (en) * | 2017-01-05 | 2017-05-31 | 南通鼎鑫电池有限公司 | A kind of lithium battery group |
Also Published As
Publication number | Publication date |
---|---|
JP3709827B2 (en) | 2005-10-26 |
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