JP4274647B2 - Rotation detection switch - Google Patents

Rotation detection switch Download PDF

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Publication number
JP4274647B2
JP4274647B2 JP27172399A JP27172399A JP4274647B2 JP 4274647 B2 JP4274647 B2 JP 4274647B2 JP 27172399 A JP27172399 A JP 27172399A JP 27172399 A JP27172399 A JP 27172399A JP 4274647 B2 JP4274647 B2 JP 4274647B2
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JP
Japan
Prior art keywords
housing
shaft
detection switch
rotation detection
insulator
Prior art date
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Expired - Fee Related
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JP27172399A
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Japanese (ja)
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JP2001093380A (en
Inventor
雄生 野口
司 光瀬
俊一 山田
Original Assignee
日本開閉器工業株式会社
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Priority to JP27172399A priority Critical patent/JP4274647B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、折りたたみ式携帯電話など、小型機器の開閉軸部に使用される回転検出スイッチに関する。
【0002】
【従来の技術】
従来、折りたたみ式携帯電話などの開閉検出用スイッチには、磁石とリードスイッチが組み合わせて使用されている。
【0003】
【発明が解決しようとする課題】
従来のリードスイッチを利用した開閉検出用スイッチでは、振動や衝撃さらに、外部磁気の影響により誤って検出してしまう恐れがあった。また、磁石を使用しているため、熱に弱く、製品の軽量化にも限界があった。
本発明はこうした問題を解決し、構造が極めて簡単で、品質に優れた回転検出スイッチを提供する目的で発明されたものである。
【0004】
【課題を解決するための手段】
本発明は上記の問題点を解決するために、スイッチ本体を形成する導電部材にて形成されたハウジングと、該ハウジング内面に設けた絶縁部材からなる絶縁体と、該絶縁体により前記ハウジングと電気的に絶縁状態に保持された導電部材から成るシャフトを前記ハウジングに回転自在に配設し、前記絶縁体の外周に沿設するとともに前記ハウジング内面にその一部を電気的に導通した固定接片に前記ハウジング内周部から対向部に向けて植設した梁部を設け、前記シャフトに欠所を設けるとともに該欠所を前記梁部に対向して配設する。
さらに、前記固定接片の梁部自由端を曲げ応力が付勢された状態で前記絶縁体に保持し、梁部自由端のバラツキを吸収するよう構成する。
【0005】
【発明の実施の形態】
本発明は、折りたたみ式携帯電話などの携帯機器の開閉検出用スイッチとして扉ヒンジ部分に取り付けることにより、機器の省スペースと軽量化を図り、構造が極めて簡単で、振動や衝撃等品質に優れた回転検出スイッチを提供することができる。
【0006】
【実施例】
以下、本実施例について図面を参照しながら説明する。
図1は本発明の回転検出スイッチの第1実施例を表わす正面断面図であり、図2はその外観図、さらに図3はその分解斜視図である。
【0007】
これらの図において、一方の電極部を兼用するハウジング6が導電部材により形成され回転検出スイッチの筐体部を構成している。
このハウジング6には、絶縁体の一部として後述のシャフト1の軸を受ける絶縁部材から成るブッシュ8が収納されるとともに、もう一方の絶縁体としてのベース9がハウジング6の開口部を塞ぐ形でハウジング6の周端部をベース9に加締めて固定している。
【0008】
鍔部4を前記ブッシュ8に当接して導電部材により形成されたシャフト1がハウジング6の縦軸として中心部に配置され、もう一方の電極部を兼用している。このシャフト1には外部突出部に回転止めのキー部となるスリ割部2と、後述の固定接片14との対向面を構成する欠所3が形成されている。
【0009】
そして、薄板状のバネ部材で形成された固定接片14がその立上げ部17をベース9の溝部(図示せず)に挿入するとともにハウジング6との接触を確実にするための切起し部16をハウジング6の内面に当接した状態でベース9とともにスイッチ内部に配設される。この固定接片14には、その一端を自由端とした梁部15が形成され、前記シャフト1の欠所3と対向して開閉接触部を構成している。
【0010】
本実施例では前述のブッシュ8とベース9を分割構成しているが、一体的に形成することが可能であり、ハウジング6とベース9の加締めについても凹凸嵌合等により組立てを簡略化することができる。
【0011】
このように構成した回転検出スイッチは、シャフト1の欠所3の平面部と固定接片14の梁部15が略平行に対向配設された状態でハウジング6とシャフト1間は電気的に非導通状態であり、次にシャフト1が回転して欠所3の平面端部が固定接片14の梁部15下面と接触を開始する状態でハウジング6とシャフト1は導通状態となるよう作用する。
【0012】
図4、図5及び図6はこの接触状況を説明するための平面断面図である。これらの図において、図4は携帯機器等の開閉部が閉じられている状態で、固定接片14の梁部15とシャフト1の可動接点部5間は非導通状態を呈している。
次に開閉部が開かれて半開きになると図5の状態で固定接片14の梁部15とシャフト1の欠所3端部が導通を開始しシャフト1とハウジングがオン状態となる。図6は180度の全開状態を表わしている。
【0013】
導通開始角度についてはシャフト1の径と欠所3の段差寸法、及び固定接片14の梁部15との間隙により、使用条件に合わせて様々な検出角度を設定することが容易にできる。なお、本実施例では欠所3部の断面を略半円形状としているが、扇形や1/4円断面にしてもよい。
また、接触位置において十分なワイピングを確保することができるので、接触信頼性が高い回転検出スイッチを提供することができる。
さらにシャフト1の半円周面を可動接点部5として使用しているので、固定接片への負荷を低減してチャタリングが少なく、耐久性の良い回転検出スイッチを容易に得ることができる。
また、電極部をハウジング6とシャフト1で兼用しているので、回転体の検出に最適で極細の回転検出スイッチを構成することができるなど、多くの優れた特徴を有している。
【0014】
本実施例ではスイッチ本体の外径の大きさは5mm程度であるが、さらに細い回転検出スイッチを構成することが可能である。
さらに、接触部を複数に分割したり、回転軸にOリングを配設してポケットに入れた携帯機器等の汗や湿気に配慮したもの、さらに、ハウジング6に外部端子を設けるとともにシャフト1からも外部端子を導出するなど、様々な応用展開を図ることが可能であるが、本発明は以上の応用事例を排除するものではない。
【0015】
図7は本発明の回転検出スイッチの第2実施例を表わす平面断面図である。
固定接片34をベース29の外周に周回させた後、梁部35を鋭角状に曲げるとともにベース29に平面部33を設けて前記梁部35の自由端を曲げ応力が付勢された状態で保持している。このように構成することにより、固定接片34の梁部35の曲げ寸法のバラツキ許容範囲を大きくすることができるので、加工精度を高くしなくても回転角度の検出精度が良い回転検出スイッチを容易に構成することができる。
図8及び図9は固定接片54、74の梁部の形状の応用展開事例である。
【0016】
【発明の効果】
以上、詳細に説明したように、本発明によれば、次のような効果を奏することができる。
(1)スイッチ本体を形成する導電部材にて形成されたハウジングと、該ハウジング内面に設けた絶縁部材からなる絶縁体と、該絶縁体により前記ハウジングと電気的に絶縁状態に保持された導電部材から成るシャフトを前記ハウジングに回転自在に配設し、前記絶縁体の外周に沿設するとともに前記ハウジング内面にその一部を電気的に導通した固定接片に前記ハウジング内周部から対向部に向けて植設した梁部を設け、前記シャフトに欠所を設けるとともに該欠所を前記梁部に対向して配設したので、極細の回転検出スイッチを構成することができ、携帯機器等の省スペースと軽量化を図ることができる。
(2)スイッチ本体を形成する導電部材にて形成されたハウジングと、該ハウジング内面に設けた絶縁部材からなる絶縁体と、該絶縁体により前記ハウジングと電気的に絶縁状態に保持された導電部材から成るシャフトを前記ハウジングに回転自在に配設し、前記絶縁体の外周に沿設するとともに前記ハウジング内面にその一部を電気的に導通した固定接片に前記ハウジング内周部から対向部に向けて植設した梁部を設け、前記シャフトに欠所を設けるとともに該欠所を前記梁部に対向して配設したので、組立てが容易で安価な回転検出スイッチを提供することができる。
(3)シャフトに欠所を設けるとともに該欠所を前記梁部に対向して配設したので、接触位置において十分なワイピングを確保することができ、接触信頼性の高い回転検出スイッチを提供することができる。
(4)シャフトの半円周面を可動接点部として使用しているので、固定接片への負荷を低減してチャタリングが少なく、耐久性の良い回転検出スイッチを容易に得ることができる。
(5)電極部をハウジングとシャフトで兼用しているので、回転体の検出に最適な極細の回転検出スイッチを構成することができる。
(6)固定接片の梁部自由端を曲げ応力が付勢された状態で絶縁体に保持したので、コンパクトに構成したにもかかわらず十分な接触圧力が得られ、安定した接触を維持することができる。
(7)固定接片の梁部自由端を曲げ応力が付勢された状態で絶縁体に保持したので、可動接片の曲げ寸法のバラツキを補正して高い検出回転精度を維持することができる。
【図面の簡単な説明】
【図1】本発明の回転検出スイッチの第1実施例を表わす正面断面図である。
【図2】本発明の回転検出スイッチの第1実施例を表わす外観図である。
【図3】本発明の回転検出スイッチの第1実施例を表わす分解斜視図である。
【図4】本発明の回転検出スイッチの第1実施例のオフ状態を表わす平面断面図である。
【図5】本発明の回転検出スイッチの第1実施例の接触開始状態を表わす平面断面図である。
【図6】本発明の回転検出スイッチの第1実施例のオン状態を表わす平面断面図である。
【図7】本発明の回転検出スイッチの第2実施例を表わす平面断面図である。
【図8】本発明の回転検出スイッチの応用事例を表わす正面断面図である。
【図9】本発明の回転検出スイッチの他の応用事例を表わす正面断面図である。
【符号の説明】
1 シャフト
2 スリ割部
3、23 欠所
4 鍔部
5、25 可動接点部
6、26 ハウジング
7 切欠き部
8 ブッシュ
9、29 ベース
10 凸部
11 回転止め部
12、13、32、33 平面部
14、34、54、74 固定接片
15、35 梁部
16 切起し部
17、37 立上げ部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotation detection switch used for an opening / closing shaft portion of a small device such as a folding mobile phone.
[0002]
[Prior art]
Conventionally, a combination of a magnet and a reed switch is used in an open / close detection switch such as a folding mobile phone.
[0003]
[Problems to be solved by the invention]
A conventional open / close detection switch using a reed switch may be erroneously detected due to the influence of vibration, shock, or external magnetism. Moreover, since a magnet is used, it is vulnerable to heat and there is a limit to reducing the weight of the product.
The present invention has been invented for the purpose of solving such problems and providing a rotation detection switch having an extremely simple structure and excellent quality.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a housing formed of a conductive member forming a switch body, an insulator made of an insulating member provided on the inner surface of the housing, and the housing to electrically connect the housing. A fixed contact piece, in which a shaft made of a conductive member held in an electrically insulated state is rotatably disposed in the housing, is provided along the outer periphery of the insulator, and part of the shaft is electrically connected to the inner surface of the housing. A beam portion planted from the inner peripheral portion of the housing toward the facing portion is provided, a notch is provided in the shaft, and the notch is disposed to face the beam portion.
Furthermore, the beam part free end of the fixed contact piece is held by the insulator in a state where a bending stress is applied, and the variation of the beam part free end is absorbed.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The present invention attaches to the door hinge as a switch for opening / closing detection of a portable device such as a foldable mobile phone, thereby reducing the space and weight of the device, having an extremely simple structure, and excellent in quality such as vibration and impact. A rotation detection switch can be provided.
[0006]
【Example】
Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 is a front sectional view showing a first embodiment of the rotation detection switch of the present invention, FIG. 2 is an external view thereof, and FIG. 3 is an exploded perspective view thereof.
[0007]
In these drawings, a housing 6 that also serves as one of the electrode portions is formed of a conductive member to constitute a casing portion of the rotation detection switch.
In this housing 6, a bush 8 made of an insulating member that receives the shaft 1 described later is housed as a part of the insulator, and a base 9 as the other insulator closes the opening of the housing 6. Thus, the peripheral end of the housing 6 is fastened and fixed to the base 9.
[0008]
A shaft 1 formed of a conductive member with the flange portion 4 abutting against the bush 8 is disposed at the center as the longitudinal axis of the housing 6 and also serves as the other electrode portion. The shaft 1 is formed with a slit portion 2 serving as a rotation-preventing key portion and a notch 3 constituting a facing surface of a fixed contact piece 14 to be described later on an external protrusion.
[0009]
Then, the fixed contact piece 14 formed of a thin plate-like spring member inserts the rising portion 17 into the groove portion (not shown) of the base 9 and at the same time raises a portion for ensuring contact with the housing 6. 16 is disposed inside the switch together with the base 9 with the inner surface of the housing 6 in contact with the base 9. The fixed contact piece 14 is formed with a beam portion 15 having one end as a free end, and constitutes an opening / closing contact portion facing the notch 3 of the shaft 1.
[0010]
In this embodiment, the above-described bush 8 and base 9 are divided, but they can be formed integrally, and the assembly of the caulking of the housing 6 and the base 9 can also be simplified by uneven fitting or the like. be able to.
[0011]
The rotation detection switch configured as described above is electrically non-conductive between the housing 6 and the shaft 1 in a state in which the flat portion of the notch 3 of the shaft 1 and the beam portion 15 of the fixed contact piece 14 are arranged substantially parallel to each other. The housing 6 and the shaft 1 act so as to be in a conductive state in a state where the shaft 1 is next rotated and the flat end of the notch 3 starts to contact the lower surface of the beam 15 of the fixed contact piece 14. .
[0012]
4, 5 and 6 are plan sectional views for explaining this contact state. In these drawings, FIG. 4 shows a state where the opening / closing part of the portable device or the like is closed, and the beam part 15 of the fixed contact piece 14 and the movable contact part 5 of the shaft 1 are in a non-conductive state.
Next, when the opening / closing portion is opened and half-opened, the beam portion 15 of the fixed contact piece 14 and the end of the notch 3 of the shaft 1 start to conduct in the state shown in FIG. 5, and the shaft 1 and the housing are turned on. FIG. 6 represents a fully open state of 180 degrees.
[0013]
With respect to the conduction start angle, various detection angles can be easily set according to the use conditions depending on the diameter of the shaft 1 and the step size of the notch 3 and the gap between the beam 15 of the fixed contact piece 14. In the present embodiment, the cross section of the three portions of the notch is substantially semicircular, but it may be fan-shaped or ¼ circular.
Further, since sufficient wiping can be ensured at the contact position, a rotation detection switch with high contact reliability can be provided.
Further, since the semicircular surface of the shaft 1 is used as the movable contact portion 5, it is possible to easily obtain a rotation detection switch with good durability by reducing the load on the fixed contact piece and reducing chattering.
In addition, since the electrode portion is shared by the housing 6 and the shaft 1, it has many excellent features such as being able to constitute an ultra-fine rotation detection switch that is optimal for detection of a rotating body.
[0014]
In this embodiment, the outer diameter of the switch body is about 5 mm, but a thinner rotation detection switch can be configured.
Furthermore, the contact part is divided into a plurality of parts, or an O-ring is provided on the rotating shaft, and in consideration of sweat and moisture such as a portable device put in a pocket. Although various application developments such as deriving external terminals can be achieved, the present invention does not exclude the above application examples.
[0015]
FIG. 7 is a plan sectional view showing a second embodiment of the rotation detecting switch of the present invention.
After rotating the fixed contact piece 34 around the outer periphery of the base 29, the beam portion 35 is bent at an acute angle, and the flat portion 33 is provided on the base 29 so that a bending stress is applied to the free end of the beam portion 35. keeping. By configuring in this way, it is possible to increase the tolerance range of the bending dimension of the beam portion 35 of the fixed contact piece 34. Therefore, a rotation detection switch with good rotation angle detection accuracy without increasing the processing accuracy. It can be configured easily.
8 and 9 are application development examples of the shape of the beam portions of the fixed contact pieces 54 and 74. FIG.
[0016]
【The invention's effect】
As described above in detail, according to the present invention, the following effects can be obtained.
(1) A housing formed of a conductive member that forms a switch body, an insulator made of an insulating member provided on the inner surface of the housing, and a conductive member that is electrically insulated from the housing by the insulator A shaft made of is rotatably disposed on the housing, is provided along the outer periphery of the insulator, and is electrically connected to a part of the inner surface of the housing from the inner peripheral portion of the housing to the opposing portion. Since the beam portion planted toward the shaft is provided, and a notch is provided in the shaft and the notch is disposed opposite to the beam portion, an extremely fine rotation detection switch can be configured. Space saving and weight reduction can be achieved.
(2) A housing formed of a conductive member forming a switch body, an insulator made of an insulating member provided on the inner surface of the housing, and a conductive member held in an electrically insulated state from the housing by the insulator A shaft made of is rotatably disposed on the housing, is provided along the outer periphery of the insulator, and is electrically connected to a part of the inner surface of the housing from the inner peripheral portion of the housing to the opposing portion. Since a beam portion planted toward the beam portion is provided, and a notch is provided in the shaft, and the notch is disposed to face the beam portion, it is possible to provide a rotation detection switch that is easy to assemble and inexpensive.
(3) Since a notch is provided in the shaft and the notch is disposed opposite to the beam portion, sufficient wiping can be ensured at the contact position, and a rotation detection switch with high contact reliability is provided. be able to.
(4) Since the semicircular surface of the shaft is used as the movable contact portion, the load on the fixed contact piece is reduced, chattering is small, and a durable rotation detection switch can be easily obtained.
(5) Since the electrode portion is shared by the housing and the shaft, it is possible to configure an extremely fine rotation detection switch that is optimal for detecting a rotating body.
(6) Since the free end of the beam portion of the fixed contact piece is held by the insulator in a state where the bending stress is applied, sufficient contact pressure can be obtained despite the compact configuration, and stable contact can be maintained. be able to.
(7) Since the free end of the beam portion of the fixed contact piece is held by the insulator in a state where the bending stress is urged, it is possible to maintain high detection rotation accuracy by correcting the variation in the bending size of the movable contact piece. .
[Brief description of the drawings]
FIG. 1 is a front sectional view showing a first embodiment of a rotation detection switch of the present invention.
FIG. 2 is an external view showing a first embodiment of a rotation detection switch of the present invention.
FIG. 3 is an exploded perspective view showing a first embodiment of the rotation detection switch of the present invention.
FIG. 4 is a plan sectional view showing an off state of the first embodiment of the rotation detection switch of the present invention.
FIG. 5 is a plan sectional view showing a contact start state of the first embodiment of the rotation detection switch of the present invention.
FIG. 6 is a plan sectional view showing an ON state of the first embodiment of the rotation detection switch of the present invention.
FIG. 7 is a plan sectional view showing a second embodiment of the rotation detection switch of the present invention.
FIG. 8 is a front sectional view showing an application example of the rotation detection switch of the present invention.
FIG. 9 is a front sectional view showing another application example of the rotation detection switch of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shaft 2 Slot part 3, 23 Notch 4 Eave part 5, 25 Movable contact part 6, 26 Housing 7 Notch part 8 Bush 9, 29 Base 10 Convex part 11 Anti-rotation part 12, 13, 32, 33 Plane part 14, 34, 54, 74 Fixed contact piece 15, 35 Beam 16 Cut-and-raised part 17, 37 Rising part

Claims (2)

スイッチ本体を形成する導電部材にて形成されたハウジングと、該ハウジング内面に設けた絶縁部材からなる絶縁体と、該絶縁体により前記ハウジングと電気的に絶縁状態に保持された導電部材から成るシャフトを前記ハウジングに回転自在に配設し、前記絶縁体の外周に沿設するとともに前記ハウジング内面にその一部を電気的に導通した固定接片に前記ハウジング内周部から対向部に向けて植設した梁部を設け、前記シャフトに欠所を設けるとともに該欠所を前記梁部に対向して配設し、前記シャフトの回転により前記シャフトと前記固定接片梁部が電気的に開閉することを特徴とする回転検出スイッチ。A shaft made of a conductive member that forms a switch body, an insulator made of an insulating member provided on the inner surface of the housing, and a shaft made of a conductive member that is electrically insulated from the housing by the insulator. Is rotatably arranged in the housing, and is placed along the outer periphery of the insulator and is fixed to a fixed contact piece electrically connected to the inner surface of the housing from the inner periphery of the housing toward the opposing portion. A beam portion is provided, a notch is provided in the shaft, and the notch is disposed to face the beam portion, and the shaft and the fixed contact beam portion are electrically opened and closed by rotation of the shaft. A rotation detection switch characterized by that. 前記固定接片の梁部自由端を曲げ応力が付勢された状態で前記絶縁体に保持したことを特徴とする請求項1記載の回転検出スイッチ。2. The rotation detection switch according to claim 1, wherein the beam end free end of the fixed contact piece is held by the insulator in a state where a bending stress is applied.
JP27172399A 1999-09-27 1999-09-27 Rotation detection switch Expired - Fee Related JP4274647B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27172399A JP4274647B2 (en) 1999-09-27 1999-09-27 Rotation detection switch

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Application Number Priority Date Filing Date Title
JP27172399A JP4274647B2 (en) 1999-09-27 1999-09-27 Rotation detection switch

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Publication Number Publication Date
JP2001093380A JP2001093380A (en) 2001-04-06
JP4274647B2 true JP4274647B2 (en) 2009-06-10

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JP27172399A Expired - Fee Related JP4274647B2 (en) 1999-09-27 1999-09-27 Rotation detection switch

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