JP5045400B2 - Push button with hinge. - Google Patents

Push button with hinge. Download PDF

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Publication number
JP5045400B2
JP5045400B2 JP2007311977A JP2007311977A JP5045400B2 JP 5045400 B2 JP5045400 B2 JP 5045400B2 JP 2007311977 A JP2007311977 A JP 2007311977A JP 2007311977 A JP2007311977 A JP 2007311977A JP 5045400 B2 JP5045400 B2 JP 5045400B2
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push button
hinge
knob
ptt
hinges
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JP2009135055A (en
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祥司 太田
淳二 井内
大司 田辺
佳史 山田
博史 中山
博之 特記事項 出願依頼書記載の発明者氏名の移記に誤りがあった。 郡司
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JVCKenwood Corp
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この発明は携帯用通信機に係わり、特に、そのＰＴＴつまみに関する。   The present invention relates to a portable communication device, and more particularly to the PTT knob.

従来の携帯用通信機のＰＴＴ（push to talk) つまみの例を図３により説明する。図３（ａ）は従来の携帯用通信機のＰＴＴつまみの例を示す平面図、図３（ｂ）は同ＰＴＴつまみを示す側面図、図３（ｃ）は同ＰＴＴつまみを示す底面図、図３（ｄ）は図３（ａ）におけるＡ−Ａ断面図である。   An example of a conventional PTT (push to talk) knob of a portable communication device will be described with reference to FIG. 3A is a plan view showing an example of a PTT knob of a conventional portable communication device, FIG. 3B is a side view showing the PTT knob, and FIG. 3C is a bottom view showing the PTT knob. FIG.3 (d) is AA sectional drawing in Fig.3 (a).

図３に示すＰＴＴつまみ１０は合成樹脂により一体成形されており、中央の釦部２の両側にはヒンジ３とヒンジ４が左右方向に延びているヒンジ３とヒンジ４の夫々の先端部３ａおよび先端部４ａは中央側の部分より一段高い面となっている。   The PTT knob 10 shown in FIG. 3 is integrally formed of synthetic resin, and hinges 3 and 4 extend in the left-right direction on both sides of the central button portion 2. The tip portion 4a is a surface that is one step higher than the central portion.

押釦部２は図示していないケース側面の穴より外部に露出しており、押釦部２の下面にはスイッチ作動部５が突起状に形成されており、スイッチ作動部５は図示していないシャシまたはシャシに固定されたプリント基板に設けられたスイッチの作動子と対向している。   The push button portion 2 is exposed to the outside through a hole on the side surface of the case (not shown). A switch operating portion 5 is formed in a protruding shape on the lower surface of the push button portion 2, and the switch operating portion 5 is not shown in the chassis. Or it opposes the actuator of the switch provided in the printed circuit board fixed to the chassis.

ヒンジ３の先端部３ａおよびヒンジ４の先端部４ａは夫々ケース内面に形成された凹みに嵌まりＰＴＴつまみ１０が位置決めされ、ヒンジ３の先端部３ａおよびヒンジ４の先端部４ａはケースとシャシで挾持されることによりケースに固定される。ヒンジ４の中間に設けられている円弧形状部６、６の両側に形成された足６ａ、６ａはシャシに当接する。   The tip 3a of the hinge 3 and the tip 4a of the hinge 4 are fitted in recesses formed on the inner surface of the case, respectively, so that the PTT knob 10 is positioned. The tip 3a of the hinge 3 and the tip 4a of the hinge 4 are formed by the case and the chassis. It is fixed to the case by being held. The legs 6a and 6a formed on both sides of the arc-shaped portions 6 and 6 provided in the middle of the hinge 4 are in contact with the chassis.

ケース外部に露出した釦部２を指で押すことにより、釦部２が下動し、スイッチ作動部５がスイッチの作動子を作動させることにより、送信・受信状態が切り替えられる。このとき円弧形状部６、６の両側に形成された足６ａ、６ａがシャシに当接するめ、釦部２の縁を押してもヒンジ４が捩じり変形せず、釦部２が傾かない。   When the button part 2 exposed to the outside of the case is pushed with a finger, the button part 2 is moved down, and the switch operating part 5 operates the switch actuator, thereby switching the transmission / reception state. At this time, the legs 6a and 6a formed on both sides of the arc-shaped portions 6 and 6 are in contact with the chassis, and even if the edge of the button portion 2 is pressed, the hinge 4 is not twisted and deformed, and the button portion 2 does not tilt.

ところで、携帯用通信機の側面のスペースは限られており、ＰＴＴつまみのために広いスペースとることはできない。従って、ヒンジの長さは短くなる。短いヒンジで押釦部２にスイッチを作動させるための十分な上下動のストロークを与えるためにはヒンジの撓みが大きくなり、ヒンジには大きい応力が加わることになる。   By the way, the space on the side of the portable communication device is limited, and it is not possible to make a wide space for the PTT knob. Therefore, the length of the hinge is shortened. In order to give a sufficient vertical stroke for operating the switch to the push button part 2 with a short hinge, the deflection of the hinge becomes large, and a large stress is applied to the hinge.

ＰＴＴつまみは頻繁に作動されるために、ヒンジには繰り返し応力が多数回加わることになる。印加される応力が大きくなると、繰り返し応力により疲労破壊に至る応力繰り返し回数が少なくなる。従って、上記したＰＴＴつまみ１０は作動される回数が多くなると疲労破壊する恐れがあった。   Since the PTT knob is operated frequently, the hinge is repeatedly stressed many times. As the applied stress increases, the number of repeated stresses that lead to fatigue failure due to repeated stress decreases. Therefore, the PTT knob 10 described above has a risk of fatigue failure when the number of operations is increased.

特開平１１−１４９８４５号公報に開示されたヒンジ付きツマミは、ヒンジ２がツマミ支持体１とツマミ部４に連なるように一体に形成され、ヒンジ２は片持梁として作用する。このヒンジ付きツマミはツマミ部４が片持梁で支持されているので、ツマミ部４を押したときにツマミ部４が傾き、動作感が損なわれるという問題があった。
特開平１１−１４９８４５号公報、段落００１０、段落００１１、図１ The hinged knob disclosed in Japanese Patent Application Laid-Open No. 11-149845 is integrally formed so that the hinge 2 is continuous with the knob support 1 and the knob portion 4, and the hinge 2 acts as a cantilever. Since the knob portion 4 is supported by a cantilever beam in this hinged knob, there is a problem that when the knob portion 4 is pushed, the knob portion 4 is tilted and the operational feeling is impaired.
JP-A-11-149845, paragraph 0010, paragraph 0011, FIG.

この発明は上記した点に鑑みてなされたものであって、その目的とするところは、良好な動作感が得られ、しかも長期間使用しても疲労破壊する恐れのない携帯用通信機のＰＴＴつまみ提供することにある。   The present invention has been made in view of the above points, and an object of the present invention is to provide a PTT for a portable communication device that can provide a good feeling of operation and that does not cause fatigue failure even after long-term use. There is to provide a knob.

この発明の合成樹脂により一体成形されたヒンジつき押釦は、ケースの穴から突出する押釦の下面にスイッチ作動部が設けられ、前記押釦の周囲に薄肉フランジ形状の鍔部が設けられており、前記鍔部の両側に前記押釦を前記下面側に変位可能に支持し、前記鍔部と同じ肉厚で滑らかに連なる２つのヒンジが形成され、前記２つのヒンジのそれぞれの先端が前記ケースに固定され、前記２つのヒンジのうち前記押釦から前記ヒンジの先端までの距離が短い方のヒンジがスリットを介して二股状の連結部で前記押釦に繋がり、前記押釦 から前記２つのヒンジの先端までの距離の違いにより生じる前記押釦の変位の際の前記ヒンジへの応力集中を緩和させることを特徴とするものである。
また、この発明のヒンジつき押釦は前記ヒンジつき押釦において、前記スイッチ作動部が前記押釦の下面の中央に配置されるものである。 The hinged push button integrally formed of the synthetic resin of the present invention is provided with a switch operating portion on the lower surface of the push button protruding from the hole of the case, and a thin flange-shaped flange portion is provided around the push button, The push button is supported on both sides of the collar part so as to be displaceable on the lower surface side, and two hinges that are smoothly connected with the same thickness as the collar part are formed, and the tips of the two hinges are fixed to the case. The hinge having the shorter distance from the push button to the tip of the hinge of the two hinges is connected to the push button by a bifurcated connecting portion through a slit, and the distance from the push button to the tips of the two hinges The stress concentration on the hinge at the time of the displacement of the push button caused by the difference is eased .
In the hinged push button according to the present invention, in the hinged push button, the switch operating portion is arranged at the center of the lower surface of the push button.

この発明の携帯用通信機のＰＴＴつまみによれば、良好な動作感が得られ、しかも長期間使用しても疲労破壊する恐れがない。   According to the PTT knob of the portable communication device of the present invention, a good feeling of operation can be obtained, and there is no fear of fatigue failure even after long-term use.

図１（ａ）はこの発明の実施例である携帯用通信機のＰＴＴつまみを示す平面図、図１（ｂ）は同ＰＴＴつまみを示す側面図、図１（ｃ）は同ＰＴＴつまみを示す底面図、図１（ｄ）は図１（ａ）におけるＡ−Ａ断面図である。   1A is a plan view showing a PTT knob of a portable communication device according to an embodiment of the present invention, FIG. 1B is a side view showing the PTT knob, and FIG. 1C shows the PTT knob. A bottom view and FIG.1 (d) are AA sectional drawings in Fig.1 (a).

図１に示すＰＰＴつまみ１は合成樹脂により一体成形されており、中央の押釦２の両側にはヒンジ３とヒンジ４が左右方向に延びている。ヒンジ３とヒンジ４の夫々の先端部３ａおよび先端部４ａは中央の部分より一段高い面となっている。PPT knob 1 shown in FIG. 1 is integrally molded by synthetic resin, on both sides of the central push button 2 that have hinge 3 and the hinge 4 extends in the lateral direction. The front end 3a and the front end 4a of the hinge 3 and the hinge 4 are higher than the central portion.

押釦部２は図示していないケース側面の穴より外部に露出しており、押釦部２の下面にはスイッチ作動部５が突起状に形成されており、スイッチ作動部５は図示していないシャシまたはシャシに固定されたプリント基板に設けられたスイッチの作動子と対向している。   The push button portion 2 is exposed to the outside through a hole on the side surface of the case (not shown). A switch operating portion 5 is formed in a protruding shape on the lower surface of the push button portion 2, and the switch operating portion 5 is not shown in the chassis. Or it opposes the actuator of the switch provided in the printed circuit board fixed to the chassis.

ヒンジ３の先端部３ａおよびヒンジ４の先端部４ａは夫々ケース内面に形成された凹みに嵌まりＰＴＴつまみ１が位置決めされ、ヒンジ３の先端部３ａおよびヒンジ４の先端部４ａはケースとシャシで挟持されることによりケースに固定される。ヒンジ４の中間に設けられている円弧形状部６，６の両側形成された足６ａ、６ａはシャシに当接する。The distal end portion 3a of the hinge 3 and the distal end portion 4a of the hinge 4 are fitted into recesses formed on the inner surface of the case, respectively, so that the PTT knob 1 is positioned, and the distal end portion 3a of the hinge 3 and the distal end portion 4a of the hinge 4 are It is fixed to the case by being pinched. The legs 6a and 6a formed on both sides of the arc-shaped portions 6 and 6 provided in the middle of the hinge 4 abut on the chassis.

図１に示すスリット７はこの発明の特徴部分であり、ヒンジ３の付根部に設けられており、スリット７の外側に形成される二股状連結部８を介してヒンジ３が押釦部２と繋がっている。   The slit 7 shown in FIG. 1 is a characteristic part of the present invention, and is provided at the base portion of the hinge 3. The hinge 3 is connected to the push button portion 2 through a bifurcated connection portion 8 formed outside the slit 7. ing.

ケース外部に露出した釦部２を指で押すことにより、釦部２が下動し、スイッチ作動部５がスイッチの作動子を作動させることにより、送信・受信状態が切り替えられる。このとき円弧形状部６、６の両側に形成された足６ａ、６ａがシャシに当接するめ、釦部２の縁を押してもヒンジ４が捩じり変形せず、釦部２が傾かない。   When the button part 2 exposed to the outside of the case is pushed with a finger, the button part 2 is moved down, and the switch operating part 5 operates the switch actuator, thereby switching the transmission / reception state. At this time, the legs 6a and 6a formed on both sides of the arc-shaped portions 6 and 6 are in contact with the chassis, and even if the edge of the button portion 2 is pressed, the hinge 4 is not twisted and deformed, and the button portion 2 does not tilt.

実施例のＰＴＴつまみはヒンジ３と押釦部２の間に二股状連結部８が介在するために、押釦部２の変位を生じさせる梁の長さが長くなり、押釦部２の単位変位量に対するヒンジ３および二股状連結部８に加わる応力が全体に亘り小さくなる。   In the PTT knob of the embodiment, since the bifurcated connecting portion 8 is interposed between the hinge 3 and the push button portion 2, the length of the beam causing the displacement of the push button portion 2 becomes long, and the unit displacement amount of the push button portion 2 is increased. The stress applied to the hinge 3 and the bifurcated connecting portion 8 is reduced as a whole.

さらに、応力が流れる断面積変化で発生する応力集中については、二股状連結部８の付根２箇所での断面積の和はスリットがないときのスリット付根の断面積の２倍程度となり応力が流れる断面積変化は小さくなる。従って応力集中が小さくなる。さらに、釦部２を片押ししたときの捩じれ変形については、捩じれ変形で発生するトルクを２か所の大きいスパンで受けるため、捩じれ変形で発生する応力も小さくなる。   Further, regarding the stress concentration generated by the change of the cross-sectional area through which the stress flows, the sum of the cross-sectional areas at the two roots of the bifurcated connecting portion 8 is about twice the cross-sectional area of the slit base when there is no slit, and the stress flows. The cross-sectional area change is small. Therefore, the stress concentration becomes small. Furthermore, with regard to torsional deformation when the button portion 2 is pressed once, the torque generated by the torsional deformation is received by two large spans, so the stress generated by the torsional deformation is also reduced.

図２に実施例と従来例のＰＴＴつまみに発生する最大応力を応力解析で得た結果を示す。図２の表で明らかなように、各印加された荷重１〜５kgf に対する最大応力は本実施例のものの方が従来例のものよりいずれの荷重に対しても小さくなっている。この応力の差により、本実施例のＰＴＴつまみは従来例のＰＴＴつまみよりも２倍以上の繰り返し荷重に耐えることが可能となった。   FIG. 2 shows the results obtained by stress analysis of the maximum stress generated in the PTT knobs of the example and the conventional example. As is apparent from the table of FIG. 2, the maximum stress for each applied load of 1 to 5 kgf is smaller for the load of this embodiment than for the load of the conventional example. Due to this difference in stress, the PTT knob of this embodiment can withstand a repeated load more than twice that of the conventional PTT knob.

図１（ａ）はこの発明の実施例である携帯用通信機のＰＴＴつまみを示す平面図、図１（ｂ）は同ＰＴＴつまみを示す側面図、図１（ｃ）は同ＰＴＴつまみを示す底面図、図１（ｄ）は図１（ａ）におけるＡ−Ａ断面図である。1A is a plan view showing a PTT knob of a portable communication device according to an embodiment of the present invention, FIG. 1B is a side view showing the PTT knob, and FIG. 1C shows the PTT knob. A bottom view and FIG.1 (d) are AA sectional drawings in Fig.1 (a). 実施例と従来例のＰＴＴつまみ応力を比較して示す表である。It is a table | surface which compares and shows the PTT knob stress of an Example and a prior art example. 図３（ａ）は従来の携帯用通信機のＰＴＴつまみの例を示す平面図、図３（ｂ）は同ＰＴＴつまみを示す側面図、図３（ｃ）は同ＰＴＴつまみを示す底面図、図３（ｄ）は図３（ａ）におけるＡ−Ａ断面図である。3A is a plan view showing an example of a PTT knob of a conventional portable communication device, FIG. 3B is a side view showing the PTT knob, and FIG. 3C is a bottom view showing the PTT knob. FIG.3 (d) is AA sectional drawing in Fig.3 (a).

符号の説明Explanation of symbols

１ ＰＴＴつまみ
２ 釦部
３ ヒンジ、３ａ先端部
４ ヒンジ、４ａ先端部
５ スイッチ作動部
６ 円弧形状部、６ａ 足
７ スリット
８ 二股状連結部
１０ ＰＴＴつまみ DESCRIPTION OF SYMBOLS 1 PTT knob 2 Button part 3 Hinge, 3a front-end | tip 4 Hinge, 4a front-end | tip part 5 Switch operation part 6 Arc-shaped part, 6a Leg 7 Slit 8 Bifurcated connection part 10 PTT knob

Claims (2)

ケースの穴から突出する押釦の下面にスイッチ作動部が設けられ、前記押釦の周囲に薄肉フランジ形状の鍔部が設けられており、前記鍔部の両側に前記押釦を前記下面側に変位可能に支持し、前記鍔部と同じ肉厚で滑らかに連なる２つのヒンジが形成され、前記２つのヒンジのそれぞれの先端が前記ケースに固定され、前記２つのヒンジのうち前記押釦から前記ヒンジの先端までの距離が短い方のヒンジがスリットを介して二股状の連結部で前記押釦に繋がり、前記押釦から前記２つのヒンジの先端までの距離の違いにより生じる前記押釦の変位の際の前記ヒンジへの応力集中を緩和させることを特徴とする合成樹脂により一体成形されたヒンジつき押釦。 A switch actuating portion is provided on the lower surface of the push button protruding from the hole of the case, and a thin flange-shaped flange portion is provided around the push button so that the push button can be displaced to the lower surface side on both sides of the flange portion. Two hinges that are supported and smoothly connected to each other with the same thickness as the collar are formed, and the tips of the two hinges are fixed to the case. Of the two hinges, from the push button to the tip of the hinge The hinge having the shorter distance is connected to the push button at the bifurcated connecting portion through the slit, and the hinge is displaced to the hinge when the push button is displaced due to a difference in distance from the push button to the tip of the two hinges. A push button with a hinge integrally formed of a synthetic resin characterized by relieving stress concentration. 前記スイッチ作動部は、前記押釦の下面の中央に配置されることを特徴とする請求項１に記載のヒンジつき押釦。2. The hinged push button according to claim 1, wherein the switch actuating portion is arranged at the center of the lower surface of the push button.
JP2007311977A 2007-12-03 2007-12-03 Push button with hinge. Active JP5045400B2 (en)

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US10770242B2 (en) 2016-05-16 2020-09-08 Motorola Solutions, Inc. Button assembly for a portable communication device

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JPS5281574A (en) * 1975-12-27 1977-07-08 Teruo Honami Key switch
JP3380431B2 (en) * 1997-06-30 2003-02-24 株式会社ケンウッド Knob mounting structure for electronic equipment
JPH11120862A (en) * 1997-10-09 1999-04-30 Yazaki Corp Push-button switch

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