JP5109629B2 - Device for adjusting rotational torque of rotary knob for portable communication device - Google Patents

Device for adjusting rotational torque of rotary knob for portable communication device Download PDF

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JP5109629B2
JP5109629B2 JP2007311979A JP2007311979A JP5109629B2 JP 5109629 B2 JP5109629 B2 JP 5109629B2 JP 2007311979 A JP2007311979 A JP 2007311979A JP 2007311979 A JP2007311979 A JP 2007311979A JP 5109629 B2 JP5109629 B2 JP 5109629B2
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rotary knob
knob
case
rotary
rotational torque
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JP2009135356A (en
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淳二 井内
祥司 太田
佳史 山田
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JVCKenwood Corp
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Description

この発明は携帯通信機用に係わり、特に、その回転つまみの回転トルク調整装置に関する。   The present invention relates to a portable communication device, and more particularly to a rotational torque adjusting device for a rotary knob.

従来の携帯通信機用回転つまみの回転トルク調整装置の例を図４により説明する。図４に示すケース１はその内部に配置されるシャシ、プリント基板等のフレーム２と締着されている。ボリューム、ロータリエンコーダ等の回転電子部品３は軸受３ｂで回転軸３ａを回転自在に支持している。   An example of a conventional rotary torque adjusting device for a rotary knob for a portable communication device will be described with reference to FIG. A case 1 shown in FIG. 4 is fastened to a frame 2 such as a chassis or a printed circuit board disposed therein. A rotary electronic component 3 such as a volume or a rotary encoder supports a rotary shaft 3a rotatably by a bearing 3b.

フレーム２の穴から突出した軸受３ｂの周囲のおねじにナット４が締め付けられ回転電子部品３は、その回転軸３ａがケース１の穴から突出するようにしてケース１に固定されている。   A nut 4 is fastened to a male screw around the bearing 3 b protruding from the hole of the frame 2, and the rotating electronic component 3 is fixed to the case 1 so that the rotating shaft 3 a protrudes from the hole of the case 1.

この回転軸３ａを挿通させるようにフレーム２に載置されたゴム製のパッキング５は筒状部５ａの下端から円板形状部５ｂが外側に延びる形状となおり、円板形状部５ｂの上面にループ状突起のリブ５ｅが形成され、筒状部５ａの上端には外側突起５ｃと内側突起５ｄがドーナツ状に形成されている。   The rubber packing 5 placed on the frame 2 so as to allow the rotary shaft 3a to pass therethrough has a shape in which the disk-shaped part 5b extends outward from the lower end of the cylindrical part 5a, and the upper surface of the disk-shaped part 5b. A loop-shaped protrusion rib 5e is formed on the upper end of the cylindrical portion 5a, and an outer protrusion 5c and an inner protrusion 5d are formed in a donut shape at the upper end of the cylindrical portion 5a.

フレーム２にケース１が固定されると、リブ５ｅはケース１に押しつぶされ、さらに、回転軸３ａに回転つまみ８を嵌着すると、外側突起５ｃが回転つまみ８の内面に圧接し、内側突起５ｄが回転軸３ａに圧接する。   When the case 1 is fixed to the frame 2, the rib 5e is crushed by the case 1, and further, when the rotary knob 8 is fitted to the rotary shaft 3a, the outer protrusion 5c presses against the inner surface of the rotary knob 8, and the inner protrusion 5d. Is in pressure contact with the rotating shaft 3a.

上記パッキング５はフレーム２とケース１に対する摩擦により回転が止められており、回転つまみ８とパッキング５の外側突起５ｃとの摩擦により、回転つまみ８の回転に伴うトルクが発生する。また、パッキング５のリブ５ｅと内側突起５ｄとにより、機器内部への防水効果が得られる。   The packing 5 is stopped from rotating due to the friction between the frame 2 and the case 1, and the torque associated with the rotation of the rotary knob 8 is generated due to the friction between the rotary knob 8 and the outer protrusion 5 c of the packing 5. Moreover, the waterproof effect to the inside of an apparatus is acquired by the rib 5e of the packing 5, and the inner side protrusion 5d.

上記した携帯通信機用回転つまみの回転トルク調整装置では、外側突起５ｃと回転つまみ８内面とが蜜嵌合し、内側突起５ｄと回転軸３ａとが蜜嵌合状態となるため、回転つまみ８を回転軸３ａに嵌合させるときに、回転つまみ８内の空気が圧縮されて高圧となる。この高圧空気は回転つまみ８を回転軸３ａから外すように作用しており、衝撃等が加わったときに回転つまみ８が外れることがあった。   In the rotary torque adjusting device for the rotary knob for portable communication device described above, the outer protrusion 5c and the inner surface of the rotary knob 8 are honey-fitted, and the inner protrusion 5d and the rotary shaft 3a are in a honey-fitted state. Is fitted to the rotary shaft 3a, the air in the rotary knob 8 is compressed to a high pressure. The high-pressure air acts to remove the rotary knob 8 from the rotary shaft 3a, and the rotary knob 8 may come off when an impact or the like is applied.

特開２００４−３４９５８０号公報に開示された従来の回転トルク調整装置は、円筒形状部の下端から円板形状部が外側に延びる介在弾性部材を、つまみ体が嵌着される回転軸とケース体の円筒状部との間に介在させ、円板形状部の外周とケース体の円筒状部の内面との摩擦によりつまみ体の回転に伴うトルクを得る構成となっている。   In a conventional rotational torque adjusting device disclosed in Japanese Patent Application Laid-Open No. 2004-349580, an intermediate elastic member having a disk-shaped portion extending outward from a lower end of a cylindrical-shaped portion, a rotating shaft on which a knob body is fitted, and a case body Between the cylindrical portion and the outer periphery of the disk-shaped portion and the inner surface of the cylindrical portion of the case body to obtain torque associated with the rotation of the knob body.

この回転トルク調整装置でも、つまみ体が回転軸に嵌着されるときにつまみ体内部の空気が圧縮され上記した図４で説明した従来の回転トルク調整装置のものと同様の問題があった。
特開２００４−３４９５８０号公報、段落００２２、図１ This rotational torque adjusting device also has the same problem as that of the conventional rotational torque adjusting device described with reference to FIG. 4 because the air inside the knob body is compressed when the knob body is fitted to the rotating shaft.
JP 2004-349580 A, paragraph 0022, 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、回転つまみ内に圧縮空気が溜まることがなく、衝撃等で回転つまみが抜ける恐れのない携帯通信機用回転つまみの回転トルク調整装置を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 rotate a portable communication device in which compressed air does not accumulate in the rotary knob and the rotary knob does not come off due to an impact or the like. An object of the present invention is to provide a rotary torque adjusting device for a knob.

この発明の携帯通信機用回転つまみの回転トルク調整装置は、ケース内部のフレームに取付けられ回転軸がケース外部に突出する回転電子部品の前記回転軸を回転させるため前記回転軸に嵌合する内面と、前記回転軸に嵌合する内面と段差を介して拡開された拡開される内面とを有し、つまみ体が一体に形成された回転つまみの回転トルク調整装置において、前記フレームとケースとの間に、前記回転軸を挿通させる筒状部と前記筒状部の下端から外側に延びる円板形状部とで形成されるゴム弾性部材を介在させており、前記ゴム弾性部材は円板形状部と前記フレームまたはケースに対する摩擦力により回転が止められ、前記回転つまみの拡開される内面と前記ゴム弾性部材の筒状部の外面との少なくとも一方に凹凸が形成され、前記回転つまみの拡開される内面と前記ゴム弾性部材の筒状部の外面との摩擦力により回転トルクを発生させるものである。 The rotary torque adjusting device for a rotary knob for a portable communication device according to the present invention has an inner surface fitted to the rotary shaft for rotating the rotary shaft of a rotary electronic component attached to a frame inside the case and having a rotary shaft protruding outside the case. And a rotary torque adjusting device for a rotary knob in which the knob body is integrally formed , and the frame and the case. A rubber elastic member formed by a cylindrical portion through which the rotating shaft is inserted and a disk-shaped portion extending outward from the lower end of the cylindrical portion is interposed between the rubber elastic member and the rubber elastic member. rotation is stopped by frictional force and shape portion with respect to the frame or case, on at least one irregularity between the cylindrical portion of the outer surface of the expansion is the inner surface and the rubber elastic member of the rotary knob is formed, one said rotating Is intended to generate a rotational torque by the frictional force between the inner surface and the cylindrical portion of the outer surface of the rubber elastic member being Mino expanded.

また、前記携帯通信機用回転つまみの回転トルク調整装置において、前記ゴム弾性部材を前記ケースの前記回転軸を挿通させる穴からの水の侵入を防止する防水パッキングとしたものである。   Further, in the rotational torque adjusting device for the rotary knob for portable communication device, the rubber elastic member is a waterproof packing for preventing water from entering from a hole through which the rotating shaft of the case is inserted.

また、前記各携帯通信機用回転つまみの回転トルク調整装置において、前記回転つまみの拡開される内面に形成される凹凸を前記回転軸に沿う方向に延びる複数のリブとしたものである。 Further, in the rotational torque adjusting device for each rotary knob for portable communication devices, the unevenness formed on the inner surface of the rotary knob that is expanded is a plurality of ribs extending in the direction along the rotation axis.

この発明の携帯通信機用回転つまみの回転トルク調整装置によれば、回転つまみ内に圧縮空気が溜まることがなく、衝撃等で回転つまみが抜ける恐れがない。   According to the rotational torque adjusting device for a rotary knob for a portable communication device of the present invention, compressed air does not accumulate in the rotary knob, and there is no possibility that the rotary knob will come off due to an impact or the like.

以下この発明を実施するための最良の形態を実施例に即して説明する。図１はこの発明の実施例である携帯通信機用回転つまみの回転トルク調整装置を示す断面図、図２は同回転トルク調整装置の部材を示す斜視図、図３は図１におけるＡ−Ａ断面図である。   The best mode for carrying out the present invention will be described below with reference to examples. 1 is a cross-sectional view showing a rotational torque adjusting device for a rotary knob for a portable communication device according to an embodiment of the present invention, FIG. 2 is a perspective view showing members of the rotational torque adjusting device, and FIG. It is sectional drawing.

図１に示すケース１はその内部に配置されるシャシ、プリント基板等のフレーム２と締着されている。ボリューム、ロータリエンコーダ等の回転電子部品３は軸受３ｂで回転軸３ａを回転自在に支持している。   A case 1 shown in FIG. 1 is fastened to a frame 2 such as a chassis or a printed circuit board disposed therein. A rotary electronic component 3 such as a volume or a rotary encoder supports a rotary shaft 3a rotatably by a bearing 3b.

フレーム２の穴から突出した軸受３ｂの周囲のおねじにナット４が締め付けられ回転電子部品３は、その回転軸３ａがケース１の穴から突出するようにしてケース１に固定されている。   A nut 4 is fastened to a male screw around the bearing 3 b protruding from the hole of the frame 2, and the rotating electronic component 3 is fixed to the case 1 so that the rotating shaft 3 a protrudes from the hole of the case 1.

この回転軸３ａを挿通させるようにフレーム２に載置されたゴム製のパッキング５は筒状部５ａの下端から円板形状部５ｂが外側に延びる形状となおり、円板形状部５ｂの上面にループ状突起のリブ５ｅが形成され、筒状部５ａの上端には外側突起５ｃと内側突起５ｄがドーナツ状に形成されている。   The rubber packing 5 placed on the frame 2 so as to allow the rotary shaft 3a to pass therethrough has a shape in which the disk-shaped part 5b extends outward from the lower end of the cylindrical part 5a, and the upper surface of the disk-shaped part 5b. A loop-shaped protrusion rib 5e is formed on the upper end of the cylindrical portion 5a, and an outer protrusion 5c and an inner protrusion 5d are formed in a donut shape at the upper end of the cylindrical portion 5a.

フレーム２にケース１が固定されると、リブ５ｅはケース１に押しつぶされる。このようにケース１の穴から突出した回転軸３ａに図２にも詳しく示す回転つまみ６を嵌着する。回転つまみ６の内面には軸方向に沿うリブ６ａ、６ａ…（図１で斜線で示す）が４個等間隔に設けられている。この回転つまみ６を回転軸３ａに嵌着すると、外側突起５ｃが回転つまみ８の内面に圧接し、内側突起５ｄが回転軸３ａに圧接する。   When the case 1 is fixed to the frame 2, the rib 5 e is crushed by the case 1. Thus, the rotary knob 6 also shown in detail in FIG. 2 is fitted to the rotary shaft 3a protruding from the hole of the case 1. On the inner surface of the rotary knob 6, four ribs 6a, 6a... (Indicated by hatching in FIG. 1) are provided at equal intervals along the axial direction. When the rotary knob 6 is fitted to the rotary shaft 3a, the outer protrusion 5c is in pressure contact with the inner surface of the rotary knob 8, and the inner protrusion 5d is in pressure contact with the rotary shaft 3a.

図３に回転つまみ６に嵌着したときのパッキング５の変形状態を示している。パッキング５はゴム弾性を有しており、リブ６ａのような長方形断面の部材に押されると変形するが、リブ６ａの両側に空隙が発生する。すなわち、図３に示すように空隙７、７…が発生しており、この空隙７、７…に空気が流れるため、回転つまみ６内部に圧縮空気が残って回転つまみ６が外れることがなくなる。   FIG. 3 shows a deformed state of the packing 5 when fitted to the rotary knob 6. The packing 5 has rubber elasticity and is deformed when pressed by a member having a rectangular cross section such as the rib 6a, but voids are generated on both sides of the rib 6a. That is, as shown in FIG. 3, gaps 7, 7... Are generated, and air flows through the gaps 7, 7.

上記パッキング５はフレーム２とケース１に対する摩擦により回転が止められており、回転つまみ６の内面とのパッキング５の外側突起５ｃとの摩擦により回転つまみ６の回転に伴うトルクが発生する。また、パッキング５のリブ５ｅと内側突起５ｄとにより、機器内部への防水効果が得られる。   The rotation of the packing 5 is stopped by the friction with respect to the frame 2 and the case 1, and torque accompanying the rotation of the rotary knob 6 is generated by the friction between the inner surface of the rotary knob 6 and the outer protrusion 5 c of the packing 5. Moreover, the waterproof effect to the inside of an apparatus is acquired by the rib 5e of the packing 5, and the inner side protrusion 5d.

回転つまみ６の内面とのパッキング５の外側突起５ｃとの摩擦の他に、パッキング５のヒステリシス損失によっても回転に伴うトルクが得られる。すなわち、ゴム弾性物質はエントロピー弾性を有するので、変形するときの弾力に比べ変形が戻るときの弾力が小さいヒステリシス（履歴）特性を有する。   In addition to the friction between the inner surface of the rotary knob 6 and the outer protrusion 5c of the packing 5, the torque associated with the rotation is also obtained by the hysteresis loss of the packing 5. That is, since the rubber elastic substance has entropy elasticity, it has a hysteresis (history) characteristic in which the elasticity when the deformation returns is smaller than the elasticity when the elasticity is deformed.

このヒステリシス特性によりエネルギー損失が生じるが、それに伴うトルクは摩擦抵抗に比較して安定している。すなわち、摩擦抵抗は擦れ合う部材の寸法変化や表面の硬度や荒さの変化に応じて大きく変化するが、ヒステリシス特性による抵抗は変化が小さい。そのために、この実施例の携帯通信機用回転つまみの回転トルク調整装置はパッキング５の変形箇所の移動に伴い安定したトルクが得られる。さらに、パッキング５により防水効果も得られる。   Although energy loss occurs due to this hysteresis characteristic, the accompanying torque is more stable than the frictional resistance. That is, the frictional resistance changes greatly according to changes in the dimensions of the rubbed members and changes in the hardness and roughness of the surface, but the resistance due to the hysteresis characteristic is small. Therefore, the rotational torque adjusting device of the rotary knob for the portable communication device of this embodiment can obtain a stable torque as the deformed portion of the packing 5 moves. Further, the packing 5 can provide a waterproof effect.

実施例は以上のように構成されているが発明はこれに限られず、例えば、回転つまみ６の内面に設ける凹凸はリブでなくシボであってもこの発明の効果が得られる。また、パッキング５に凹凸を設けてもよい。   The embodiment is configured as described above, but the invention is not limited to this. For example, even if the unevenness provided on the inner surface of the rotary knob 6 is not a rib but a texture, the effect of the present invention can be obtained. Further, the packing 5 may be provided with unevenness.

この発明の実施例である携帯通信機用回転つまみの回転トルク調整装置を示す断面図である。It is sectional drawing which shows the rotational torque adjustment apparatus of the rotary knob for portable communication apparatuses which is an Example of this invention. 同回転トルク調整装置の部材を示す斜視図である。It is a perspective view which shows the member of the rotational torque adjusting device. 図１におけるＡ−Ａ断面図である。It is AA sectional drawing in FIG. 従来の携帯通信機用回転つまみの回転トルク調整装置の例を示す断面図である。It is sectional drawing which shows the example of the rotational torque adjustment apparatus of the conventional rotary knob for portable communication apparatuses.

符号の説明Explanation of symbols

１ ケース
２ フレーム
３ 回転電子部品、３ａ 回転軸、３ｂ 軸受
４ ナット
５ パッキング、５ａ 筒状部、５ｂ 円板形状部、５ｃ 外側突起、５ｄ 内側突起５ｅ リブ
６ 回転つまみ、６ａ リブ
７ 空隙
８ 回転つまみ DESCRIPTION OF SYMBOLS 1 Case 2 Frame 3 Rotating electronic components, 3a Rotating shaft, 3b Bearing 4 Nut 5 Packing, 5a Cylindrical part, 5b Disc-shaped part, 5c Outer protrusion, 5d Inner protrusion 5e Rib 6 Rotation knob, 6a Rib 7 Gap 8 Rotation Knob

Claims (3)

ケース内部のフレームに取付けられ回転軸がケース外部に突出する回転電子部品の前記回転軸を回転させるため前記回転軸に嵌合する内面と、前記回転軸に嵌合する内面と段差を介して拡開された拡開される内面とを有し、つまみ体が一体に形成された回転つまみの回転トルク調整装置において、前記フレームとケースとの間に、前記回転軸を挿通させる筒状部と前記筒状部の下端から外側に延びる円板形状部とで形成されるゴム弾性部材を介在させており、前記ゴム弾性部材は円板形状部と前記フレームまたはケースに対する摩擦力により回転が止められ、
前記回転つまみの拡開される内面と前記ゴム弾性部材の筒状部の外面との少なくとも一方に凹凸が形成され、前記回転つまみの拡開される内面と前記ゴム弾性部材の筒状部の外面との摩擦力により回転トルクを発生させる携帯通信機用回転つまみの回転トルク調整装置。 A rotating electronic component mounted on a frame inside the case has a rotating shaft protruding outside the case. The inner surface of the rotating electronic component is connected to the rotating shaft to rotate the rotating shaft, and the inner surface of the rotating shaft is expanded through a step. And a rotary knob having a knob body formed integrally therewith, and a cylindrical portion through which the rotating shaft is inserted between the frame and the case; and A rubber elastic member formed by a disk-shaped portion extending outward from the lower end of the cylindrical portion is interposed, and the rubber elastic member is stopped from rotating by frictional force on the disk-shaped portion and the frame or case,
Concavities and convexities are formed on at least one of the inner surface of the rotating knob and the outer surface of the cylindrical portion of the rubber elastic member, and the inner surface of the rotating knob and the outer surface of the cylindrical portion of the rubber elastic member are formed. Rotational torque adjusting device for a rotary knob for portable communication devices that generates rotational torque by frictional force. 前記ゴム弾性部材は前記ケースの前記回転軸を挿通させる穴からの水の侵入を防止する防水パッキングである請求項１の携帯通信機用回転つまみの回転トルク調整装置。 The rotational torque adjusting device for a rotary knob for a portable communication device according to claim 1, wherein the rubber elastic member is a waterproof packing that prevents water from entering through a hole through which the rotary shaft of the case is inserted. 前記回転つまみの拡開される内面に形成される凹凸は前記回転軸に沿う方向に延びる複数のリブである請求項１または２の携帯通信機用回転つまみの回転トルク調整装置。 3. The rotational torque adjusting device for a rotary knob for a portable communication device according to claim 1 or 2, wherein the unevenness formed on the inner surface of the rotary knob that is expanded is a plurality of ribs extending in a direction along the rotation axis.
JP2007311979A 2007-12-03 2007-12-03 Device for adjusting rotational torque of rotary knob for portable communication device Active JP5109629B2 (en)

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