JP3648538B2 - Rotating electronic components - Google Patents

Rotating electronic components Download PDF

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Publication number
JP3648538B2
JP3648538B2 JP33276296A JP33276296A JP3648538B2 JP 3648538 B2 JP3648538 B2 JP 3648538B2 JP 33276296 A JP33276296 A JP 33276296A JP 33276296 A JP33276296 A JP 33276296A JP 3648538 B2 JP3648538 B2 JP 3648538B2
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Japan
Prior art keywords
rotor
housing
slider
electronic component
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
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JP33276296A
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Japanese (ja)
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JPH10163001A (en
Inventor
成晃 新行内
彰夫 遊佐
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Nidec Copal Electronics Corp
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Nidec Copal Electronics Corp
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Priority to JP33276296A priority Critical patent/JP3648538B2/en
Publication of JPH10163001A publication Critical patent/JPH10163001A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、回転型電子部品、特に密閉型の回転型電子部品に関する。
【0002】
【従来の技術】
従来の回転型電子部品の一例として密閉型可変抵抗器を図9に示す。
31はロータで、ロータ底部にはコイル状摺動子25を収納する摺動子収納部33が形成されており、この摺動子収納部33に弾性体である摺動子保持部材35及びコイル状摺動子25が収納されている。
コイル状摺動子25等が収納されたロータ31をハウジング11に回転自在に組み込み、ロータ31の底部外周にOリング23を組み込んだ状態で、馬蹄形の抵抗パターン15が形成された基板13及び底蓋17をハウジング11に挿入密閉することにより、ロータ31とハウジング11及び基板13との間でOリング23が押圧され、ハウジング11とロータ31とを密閉構造とすることができるとともに、摺動子収納部33内の摺動子保持部材35も基板13により押圧されて、コイル状摺動子25に適度な接点圧を持たせることができる。
【0003】
【発明が解決しようとする課題】
しかしながら、このような構造の回転型電子部品においては、ロータ31を密閉構造とするために、Oリング23のような弾性部材が別途必要となるとともに、コイル状摺動子25に適度な接点圧を持たせるために、摺動子保持部材35のような弾性部材が別途必要となるため、部品点数が多くなり組立工程が繁雑になるという問題があった。
【0004】
本発明は以上のような従来の欠点に鑑み、これらの欠点を除去するためになされたものであり、Oリング23や摺動子保持部材35のような弾性部材を必要とせず、部品点数を削減して組立工程を簡略化することのできる回転型電子部品を得ることを目的としている。
【0005】
【課題を解決するための手段】
上記目的を達成するために、本発明は基板上を回転自在なロータをハウジング内に収納してなる回転型電子部品において、ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、ハウジング内側壁あるいは基板上面あるいはその両方と当接することにより弾性変形するリップ部をロータに設けることにより回転型電子部品を構成している。
また、基板上を回転自在なロータをハウジング内に収納してなる回転型電子部品において、ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、摺動子と基板上面とが当接することにより弾性変形する摺動子保持部をロータに設けることにより回転型電子部品を構成している。
さらに、基板上を回転自在なロータをハウジング内に収納してなる回転型電子部品において、ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、ハウジング内側壁あるいは基板上面あるいはその両方と当接することにより弾性変形するリップ部と、摺動子と基板上面とが当接することにより弾性変形する摺動子保持部とをロータに設けることにより回転型電子部品を構成している。
【0006】
【実施の形態】
以下、添付図面を参照して本発明の実施の形態を詳細に説明する。
【0007】
図1は本発明の第1の実施の形態の回転型電子部品の断面図であり、図2は第1の実施の形態の回転型電子部品に組み込まれたロータの断面図である。ここでは例として、密閉型の可変抵抗器を示している。
【0008】
1aは外周下端部に弾性変形自在なリップ部3aを備えるロータで、熱可塑性エラストマからなる弾性部材で一体的に形成されている。
このロータ1aをハウジング11に収納・組立することにより、ロータ1aの外周下端部に形成されたリップ部3aが、ハウジング11の内側壁と当接することにより弾性変形(図2及び図1参照)し、ロータ1aとハウジング11とを密閉構造とすることができる。
このため、従来使用されていたOリング23(図9参照)を不要とすることができ、組立工程を簡略化することができる。
また、リップ部3aの弾性値を、その形状や肉圧等により自在に調整することができるため、密閉度や回転トルク等を自在に調整することができる。
【0009】
図3ないし図5は、リップ部をロータの外周下端部以外に形成した例や、リップ部の形状の一例を示すものであり、ハウジング11の内側壁や基板13の上面と当接する部分のロータの任意の箇所にリップ部を設けることができることを示している。
なお、ロータ1aを熱可塑性エラストマからなる弾性部材で一体的に形成した旨説明したが、多重成形等の方法によりリップ部とそれ以外の部分とを別部材で形成しても良いことは言うまでもない。
【0010】
図6は本発明の第2の実施の形態の回転型電子部品の断面図であり、図7の(a),(b),(c),(d)は第2の実施の形態の回転型電子部品に組み込まれたロータの摺動子保持部の部分断面図である。ここでは第1の実施の形態と同様に、密閉型の可変抵抗器を例として示している。
【0011】
1jは底部に弾性変形自在な摺動子保持部5aないし5dを備えるロータで、熱可塑性エラストマからなる弾性部材で一体的に形成されている。
このロータ1jをハウジング11に収納・組立することにより、ロータ1jの底部に形成された摺動子保持部5aないし5dにより保持されるコイル状摺動子25が、基板13の上面に形成された抵抗パターン15と当接することにより、コイル状摺動子25と当接した摺動子保持部5aないし5dが弾性変形し、コイル状摺動子25に適度な接点圧を持たせることができる。
このため、従来使用されていた摺動子保持部材35(図9参照)を不要とすることができ、組立工程を簡略化することができる。
また、摺動子保持部5aないし5dの弾性値を、その形状や肉圧等により自在に調整することができるため、コイル状摺動子25の接点圧を自在に調整することができる。
なお、本発明の第1の実施の形態と同様に、ロータ1jを多重成形等の方法により摺動子保持部とそれ以外の部分とを別部材で形成しても良いことは言うまでもない。
【0012】
図8は本発明の第3の実施の形態の回転型電子部品の断面図であり、本発明の第1の実施の形態のリップ部と、本発明の第2の実施の形態の摺動子保持部とをともに備えたものである。
このように構成することにより、Oリング23と摺動子保持部材35の両方を削減することができるため、さらに組立工程を簡略化することができる。
【0013】
なお、これらは密閉型の可変抵抗器に限定されるものではなく、可変コンデンサやロータリスイッチ等、ロータを備える密閉構造の回転型電子部品に適宜適用することができる。
【0014】
【発明の効果】
以上、詳細に説明したように本発明あっては次に列挙する効果を得ることができる。
【0015】
(1) ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、ハウジング内側壁あるいは基板上面あるいはその両方と当接することにより弾性変形するリップ部をロータに設けたので、ロータとハウジングとを密閉するOリングを不要とすることができ、部品点数を削減して組立工程の簡略化を図ることができる。
【0016】
(2) ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、摺動子と基板上面とが当接することにより弾性変形する摺動子保持部をロータに設けたので、摺動子に適度な接点圧を持たせる摺動子保持部材を不要とすることができ、部品点数を削減して組立工程の簡略化を図ることができる。
【0017】
(3) ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、ハウジング内側壁あるいは基板上面あるいはその両方と当接することにより弾性変形するリップ部と、摺動子と基板上面とが当接することにより弾性変形する摺動子保持部とをロータに設けたので、Oリング並びに摺動子保持部材を不要とすることができ、さらに部品点数を削減して組立工程の簡略化を図ることができる。
【図面の簡単な説明】
【図1】本発明の第1の実施の形態の回転型電子部品の断面図。
【図2】本発明の第1の実施の形態の回転型電子部品のロータの断面図。
【図3】本発明の第1の実施の形態の回転型電子部品の他のロータの断面図。
【図4】本発明の第1の実施の形態の回転型電子部品の他のロータの部分断面図。
【図5】本発明の第1の実施の形態の回転型電子部品の他のロータの断面図。
【図6】本発明の第2の実施の形態の回転型電子部品の断面図。
【図7】本発明の第2の実施の形態の回転型電子部品の摺動子保持部の部分断面図。
【図8】本発明の第3の実施の形態の回転型電子部品の断面図。
【図9】従来の回転型電子部品の断面図。
【符号の説明】
1aないし1k、31:ロータ、 3aないし3i:リップ部、
5aないし5d:摺動子保持部、
11:ハウジング、 13:基板、
15:抵抗パターン、 17:裏蓋、
19:ドライバ溝、 21:端子、
23:Oリング、 25:コイル状摺動子、
33:摺動子収納部、 35:摺動子保持部材。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary electronic component, and more particularly to a sealed rotary electronic component.
[0002]
[Prior art]
FIG. 9 shows a sealed variable resistor as an example of a conventional rotary electronic component.
Reference numeral 31 denotes a rotor, and a slider accommodating portion 33 for accommodating the coiled slider 25 is formed at the bottom of the rotor, and a slider holding member 35 and a coil which are elastic bodies are formed in the slider accommodating portion 33. A cylindrical slider 25 is accommodated.
A rotor 31 in which a coiled slider 25 or the like is housed is rotatably incorporated in the housing 11 and an O-ring 23 is incorporated on the outer periphery of the bottom of the rotor 31. By inserting and sealing the lid 17 into the housing 11, the O-ring 23 is pressed between the rotor 31, the housing 11, and the substrate 13, and the housing 11 and the rotor 31 can have a sealed structure, and a slider The slider holding member 35 in the storage portion 33 is also pressed by the substrate 13 so that the coiled slider 25 can have an appropriate contact pressure.
[0003]
[Problems to be solved by the invention]
However, in the rotary electronic component having such a structure, an elastic member such as an O-ring 23 is separately required in order to make the rotor 31 have a sealed structure, and an appropriate contact pressure is applied to the coiled slider 25. In order to have a large number of parts, an elastic member such as the slider holding member 35 is required separately, which increases the number of parts and makes the assembly process complicated.
[0004]
The present invention has been made in order to eliminate these drawbacks in view of the above-described conventional drawbacks, and does not require an elastic member such as the O-ring 23 or the slider holding member 35, and reduces the number of parts. An object of the present invention is to obtain a rotary electronic component that can be reduced and the assembly process can be simplified.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a rotary electronic component in which a rotor rotatable on a substrate is housed in a housing, wherein a part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, When the rotor is housed and assembled in the housing, the rotary electronic component is configured by providing the rotor with a lip portion that is elastically deformed by contacting the inner wall of the housing and / or the upper surface of the substrate.
Further, in a rotary electronic component in which a rotor that can rotate on a substrate is housed in a housing, part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, and the rotor is housed and assembled in the housing. At this time, the rotary electronic component is configured by providing the rotor with a slider holding portion that is elastically deformed by contact between the slider and the upper surface of the substrate.
Furthermore, in a rotary electronic component in which a rotor that can rotate on a substrate is housed in a housing, a part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, and the rotor is housed and assembled in the housing. In this case, the rotor is provided with a lip portion that is elastically deformed by abutting against the inner wall of the housing and / or the upper surface of the substrate, and a slider holding portion that is elastically deformed when the slider and the upper surface of the substrate are abutted. Thus, a rotary electronic component is configured.
[0006]
Embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0007]
FIG. 1 is a cross-sectional view of a rotary electronic component according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of a rotor incorporated in the rotary electronic component according to the first embodiment. Here, as an example, a sealed variable resistor is shown.
[0008]
A rotor 1a is provided with a lip portion 3a that is elastically deformable at the lower end of the outer periphery, and is integrally formed of an elastic member made of a thermoplastic elastomer.
By housing and assembling the rotor 1a in the housing 11, the lip portion 3a formed at the lower end of the outer periphery of the rotor 1a is elastically deformed by contacting the inner wall of the housing 11 (see FIGS. 2 and 1). The rotor 1a and the housing 11 can have a sealed structure.
For this reason, the conventionally used O-ring 23 (see FIG. 9) can be dispensed with, and the assembly process can be simplified.
Moreover, since the elasticity value of the lip | rip part 3a can be freely adjusted with the shape, meat pressure, etc., a sealing degree, a rotational torque, etc. can be adjusted freely.
[0009]
FIGS. 3 to 5 show an example in which the lip portion is formed other than the lower end of the outer periphery of the rotor, and an example of the shape of the lip portion, and the rotor in the portion that contacts the inner wall of the housing 11 and the upper surface of the substrate 13. It is shown that a lip portion can be provided at an arbitrary position.
The rotor 1a has been described as being integrally formed of an elastic member made of thermoplastic elastomer, but it goes without saying that the lip portion and other portions may be formed as separate members by a method such as multiple molding. .
[0010]
FIG. 6 is a cross-sectional view of the rotary electronic component according to the second embodiment of the present invention, and FIGS. 7A, 7B, 7C, and 7D show the rotation of the second embodiment. It is a fragmentary sectional view of the slider holding | maintenance part of the rotor integrated in the type | mold electronic component. Here, as in the first embodiment, a sealed variable resistor is shown as an example.
[0011]
Reference numeral 1j denotes a rotor provided with elastically deformable slider holding parts 5a to 5d at the bottom, which is integrally formed of an elastic member made of a thermoplastic elastomer.
By storing and assembling the rotor 1j in the housing 11, the coil-like slider 25 held by the slider holding portions 5a to 5d formed at the bottom of the rotor 1j is formed on the upper surface of the substrate 13. By abutting against the resistance pattern 15, the slider holding portions 5 a to 5 d that abut on the coiled slider 25 are elastically deformed, so that the coiled slider 25 can have an appropriate contact pressure.
For this reason, the slider holding member 35 (refer FIG. 9) used conventionally can be made unnecessary, and an assembly process can be simplified.
Further, since the elastic value of the slider holding portions 5a to 5d can be freely adjusted by the shape, the wall pressure, etc., the contact pressure of the coiled slider 25 can be freely adjusted.
Needless to say, as in the first embodiment of the present invention, the rotor 1j may be formed of a separate member for the slider holding portion and other portions by a method such as multiple molding.
[0012]
FIG. 8 is a cross-sectional view of the rotary electronic component according to the third embodiment of the present invention. The lip portion according to the first embodiment of the present invention and the slider according to the second embodiment of the present invention. A holding part is provided.
By comprising in this way, since both the O-ring 23 and the slider holding member 35 can be reduced, an assembly process can be further simplified.
[0013]
Note that these are not limited to sealed variable resistors, and can be appropriately applied to a rotary electronic component having a sealed structure including a rotor, such as a variable capacitor and a rotary switch.
[0014]
【The invention's effect】
As described above in detail, according to the present invention, the following effects can be obtained.
[0015]
(1) A part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, and when the rotor is housed / assembled in the housing, it is elastically deformed by contacting the inner wall of the housing and / or the upper surface of the substrate. Since the lip portion is provided on the rotor, an O-ring for sealing the rotor and the housing can be eliminated, and the number of parts can be reduced and the assembly process can be simplified.
[0016]
(2) A part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, and when the rotor is housed / assembled in the housing, the slider is elastically deformed by contact with the upper surface of the substrate. Since the child holding portion is provided in the rotor, a slider holding member that gives the slider a suitable contact pressure can be eliminated, and the number of parts can be reduced and the assembly process can be simplified. .
[0017]
(3) A part or all of the rotor is formed of an elastic member made of thermoplastic elastomer, and when the rotor is housed / assembled in the housing, it is elastically deformed by contacting the inner wall of the housing and / or the upper surface of the substrate. Since the lip portion and the slider holding portion that is elastically deformed by the contact between the slider and the upper surface of the substrate are provided in the rotor, the O-ring and the slider holding member can be eliminated, and the parts It is possible to simplify the assembly process by reducing the number of points.
[Brief description of the drawings]
FIG. 1 is a sectional view of a rotary electronic component according to a first embodiment of the invention.
FIG. 2 is a cross-sectional view of the rotor of the rotary electronic component according to the first embodiment of the invention.
FIG. 3 is a cross-sectional view of another rotor of the rotary electronic component according to the first embodiment of the invention.
FIG. 4 is a partial cross-sectional view of another rotor of the rotary electronic component according to the first embodiment of the invention.
FIG. 5 is a cross-sectional view of another rotor of the rotary electronic component according to the first embodiment of the invention.
FIG. 6 is a cross-sectional view of a rotary electronic component according to a second embodiment of the present invention.
FIG. 7 is a partial cross-sectional view of a slider holding portion of a rotary electronic component according to a second embodiment of the present invention.
FIG. 8 is a cross-sectional view of a rotary electronic component according to a third embodiment of the present invention.
FIG. 9 is a cross-sectional view of a conventional rotary electronic component.
[Explanation of symbols]
1a to 1k, 31: rotor, 3a to 3i: lip portion,
5a to 5d: slider holding part,
11: Housing, 13: Substrate,
15: Resistance pattern, 17: Back cover,
19: Driver groove, 21: Terminal,
23: O-ring, 25: Coiled slider,
33: Slider storage part, 35: Slider holding member.

Claims (3)

基板上を回転自在なロータをハウジング内に収納してなる回転型電子部品において、ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、ハウジング内側壁あるいは基板上面あるいはその両方と当接することにより弾性変形するリップ部をロータに設けたことを特徴とする回転型電子部品。In a rotating electronic component in which a rotor that can freely rotate on a substrate is housed in a housing, a part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, and the rotor is housed and assembled in the housing. A rotary electronic component comprising a rotor provided with a lip portion that is elastically deformed by contacting an inner wall of the housing and / or an upper surface of the substrate. 基板上を回転自在なロータをハウジング内に収納してなる回転型電子部品において、ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、摺動子と基板上面とが当接することにより弾性変形する摺動子保持部をロータに設けたことを特徴とする回転型電子部品。In a rotating electronic component in which a rotor that can freely rotate on a substrate is housed in a housing, a part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, and the rotor is housed and assembled in the housing. A rotating electronic component comprising a rotor provided with a slider holding portion that is elastically deformed by contact between the slider and the upper surface of the substrate. 基板上を回転自在なロータをハウジング内に収納してなる回転型電子部品において、ロータの一部あるいは全部を熱可塑性エラストマからなる弾性部材で形成し、ロータをハウジング内に収納・組立した際に、ハウジング内側壁あるいは基板上面あるいはその両方と当接することにより弾性変形するリップ部と、摺動子と基板上面とが当接することにより弾性変形する摺動子保持部とをロータに設けたことを特徴とする回転型電子部品。In a rotating electronic component in which a rotor that can freely rotate on a substrate is housed in a housing, a part or all of the rotor is formed of an elastic member made of a thermoplastic elastomer, and the rotor is housed and assembled in the housing. The rotor is provided with a lip portion that is elastically deformed by contacting the inner wall of the housing and / or the upper surface of the substrate, and a slider holding portion that is elastically deformed by contacting the slider and the upper surface of the substrate. Features rotating electronic components.
JP33276296A 1996-11-28 1996-11-28 Rotating electronic components Expired - Lifetime JP3648538B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33276296A JP3648538B2 (en) 1996-11-28 1996-11-28 Rotating electronic components

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Application Number Priority Date Filing Date Title
JP33276296A JP3648538B2 (en) 1996-11-28 1996-11-28 Rotating electronic components

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JPH10163001A JPH10163001A (en) 1998-06-19
JP3648538B2 true JP3648538B2 (en) 2005-05-18

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Publication number Priority date Publication date Assignee Title
JP4084156B2 (en) * 2002-10-01 2008-04-30 アルプス電気株式会社 Rotating electrical parts

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JPH10163001A (en) 1998-06-19

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