JP2009081319A

JP2009081319A - Rotary electronic component

Info

Publication number: JP2009081319A
Application number: JP2007250362A
Authority: JP
Inventors: Kazutaka Nakagome; 和隆中込
Original assignee: Teikoku Tsushin Kogyo Co Ltd
Current assignee: Teikoku Tsushin Kogyo Co Ltd
Priority date: 2007-09-27
Filing date: 2007-09-27
Publication date: 2009-04-16

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary electronic component allowing reduction of its thickness, allowing rotary torque of a slider to be easily increased at a constant value as required, and capable of preventing the occurrence of a crack on a board in crimping an end of a shaft. <P>SOLUTION: The rotary electronic component includes: the board 10 having a shaft insertion hole 13 and provided with a slide pattern 15 on the upper surface; a shaft 33 projecting on the board 10 through the shaft insertion hole 13 of the board 10; and the slider 70 having a dish-like bottom part 75, provided with an insertion hole 79 for rotatably inserting the shaft 33 at the center of the bottom part 75, and rotatably installed on the board 10 by crimping the tip of the shaft 33 inserted in the insertion hole 79. A surface around the shaft insertion hole 13 on the upper surface of the board 10 is formed into an inclined surface 23 recessed toward the shaft insertion hole 13, and the bottom part 75 of the slider 70 is brought into contact with the inclined surface 23. A void part A1 is formed between a circumferential part 79a of the insertion hole 79 of the slider 70 and the board 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、半固定可変抵抗器等の回転式電子部品に関するものである。 The present invention relates to a rotary electronic component such as a semi-fixed variable resistor.

従来、チップ型の可変抵抗器の中には、基板と摺動子と中端子（集電板）とを具備し、基板上に摺動子を配置すると共に基板の下側に中端子を配置し、中端子に設けた筒状の軸を基板に設けた軸挿通穴と摺動子に設けた挿入孔に挿入し、軸の先端をかしめることで摺動子を基板上に回動自在に取り付けて構成されるものがある（例えば特許文献１参照）。 Conventionally, a chip-type variable resistor includes a substrate, a slider, and a middle terminal (current collector plate). The slider is disposed on the substrate and the middle terminal is disposed on the lower side of the substrate. The cylindrical shaft provided on the middle terminal is inserted into the shaft insertion hole provided on the substrate and the insertion hole provided on the slider, and the tip of the shaft is crimped to allow the slider to rotate on the substrate. There are some which are configured by attaching to (for example, see Patent Document 1).

さらに特許文献１においては、この種の可変抵抗器の厚みの薄型化を図るため、その図２に示すように、基板（２１）上面の軸挿通穴（２３）の周囲に段差部（２２）を設け、この段差部（２２）内において中端子（３３）の軸（３４）を摺動子（２７）の底部（２８）中央の挿入孔（２９）に挿入して軸（３４）の先端をかしめている。このように構成すれば、段差部（２２）の深さ寸法分、可変抵抗器の低背化が図れる。 Further, in Patent Document 1, in order to reduce the thickness of this type of variable resistor, as shown in FIG. 2, a step portion (22) is formed around the shaft insertion hole (23) on the upper surface of the substrate (21). In the step portion (22), the shaft (34) of the middle terminal (33) is inserted into the insertion hole (29) at the center of the bottom (28) of the slider (27), and the tip of the shaft (34) is inserted. It is caulking. If comprised in this way, the height of a variable resistor can be made low by the depth dimension of a level | step-difference part (22).

しかしながら上記従来例においては、以下のような問題点があった。
（１）軸（３４）の先端をかしめる際、かしめの力がそのまま基板（２１）に加わるので、基板（２１）の軸挿通穴（２３）の周囲部分に割れ（ヒビ）などが生じてしまう恐れがあった。特に上記特許文献１の可変抵抗器においては、段差部（２２）によって基板（２１）の厚みが薄くなっていて基板（２１）の強度が弱いので、この問題は大きくなる。 However, the conventional example has the following problems.
(1) When the tip of the shaft (34) is caulked, the caulking force is directly applied to the substrate (21), so that cracks (cracks) or the like occur in the peripheral portion of the shaft insertion hole (23) of the substrate (21). There was a fear. In particular, in the variable resistor disclosed in Patent Document 1, the thickness of the substrate (21) is reduced by the step portion (22) and the strength of the substrate (21) is weak, so this problem is increased.

（２）摺動子（２７）を回動する際のトルクは、摺動子（２７）と軸（３４）と基板（２１）間の摩擦抵抗によって生じるが、この摩擦抵抗は摺動子（２７）の挿入孔（２９）の周囲の部分に集中している。このため摺動子（２７）の回転中心から摩擦抵抗が集中している挿入孔（２９）の周囲の部分までの半径は短く、摺動子（２７）を回動する際のトルクをそれほど大きくすることはできない。また摺動子（２７）を回動する際のトルクを大きくできない別の理由として、上記問題点（１）のように基板（２１）の割れの恐れがあるため、軸（３４）をかしめる際の力を強くできないということもある。 (2) Torque when rotating the slider (27) is caused by frictional resistance between the slider (27), the shaft (34), and the substrate (21). 27) is concentrated in the portion around the insertion hole (29). For this reason, the radius from the rotation center of the slider (27) to the periphery of the insertion hole (29) where the frictional resistance is concentrated is short, and the torque when rotating the slider (27) is so large. I can't do it. Another reason why the torque when rotating the slider (27) cannot be increased is that the substrate (21) may be cracked as in the above problem (1), so that the shaft (34) is caulked. Sometimes it is impossible to strengthen the power of the occasion.

（３）また上述のように摺動子（２７）を回動する際のトルクは、摺動子（２７）と軸（３４）と基板（２１）間の摩擦抵抗で決まるが、軸（３４）をかしめた際の基板（２１）への摺動子（２７）の押し付け力にはばらつきがあるため、摺動子（２７）の回転トルクを一定にすることは困難であった。
特開平９−２６０１１６号公報 (3) As described above, the torque when rotating the slider (27) is determined by the frictional resistance between the slider (27), the shaft (34), and the substrate (21). ), The pressing force of the slider (27) against the substrate (21) varies, and it is difficult to keep the rotational torque of the slider (27) constant.
JP-A-9-260116

本発明は上述の点に鑑みてなされたものでありその目的は、薄型化が図れると同時に、必要に応じて容易に摺動子の回動トルクを大きく、また一定にすることができ、また軸の先端をかしめる際に基板に割れ（ヒビ）などが生じることのない回転式電子部品を提供することにある。 The present invention has been made in view of the above-mentioned points, and the object thereof is to reduce the thickness, and at the same time, it is possible to easily increase the rotation torque of the slider and make it constant as necessary. An object of the present invention is to provide a rotary electronic component that does not cause cracks (cracks) or the like in the substrate when the tip of the shaft is caulked.

本願請求項１に記載の発明は、軸挿通穴を有し、上面に摺接パターンを設けてなる基板と、前記基板の軸挿通穴を通して基板上に突出する軸と、皿状の底部を有し、この底部中央に前記軸を回動自在に挿入する挿入孔を設け、この挿入孔に挿入した前記軸の先端をかしめることで基板上に回動自在に設置される摺動子と、を具備してなる回転式電子部品において、前記基板上面の軸挿通穴の周囲の面を軸挿通穴に向かって凹となる傾斜面とし、この傾斜面に前記摺動子の底部を当接させることを特徴とする回転式電子部品にある。 The invention according to claim 1 includes a substrate having a shaft insertion hole and a sliding contact pattern provided on the upper surface, a shaft protruding on the substrate through the shaft insertion hole of the substrate, and a dish-shaped bottom portion. And a slider installed rotatably on the substrate by providing an insertion hole for rotatably inserting the shaft in the center of the bottom, and caulking the tip of the shaft inserted into the insertion hole; In the rotary electronic component comprising: the surface around the shaft insertion hole on the upper surface of the substrate is an inclined surface that is concave toward the shaft insertion hole, and the bottom of the slider is brought into contact with the inclined surface The rotary electronic component is characterized by the above.

本願請求項２に記載の発明は、前記軸は、前記回転式電子部品の電気的出力を外部に取り出す中端子の一部に形成されていることを特徴とする請求項１に記載の回転式電子部品にある。 According to a second aspect of the present invention, in the rotary type according to the first aspect, the shaft is formed at a part of a middle terminal for taking out an electrical output of the rotary electronic component to the outside. In electronic components.

本願請求項３に記載の発明は、前記摺動子の挿入孔の周囲部分と基板との間に空隙部を設けたことを特徴とする請求項１又は２に記載の回転式電子部品にある。 The invention according to claim 3 of the present application is the rotary electronic component according to claim 1 or 2, wherein a gap is provided between a peripheral portion of the insertion hole of the slider and the substrate. .

請求項１，２に記載の発明によれば、基板の傾斜面に摺動子の底部を当接させたので、摺動子の基板上面からの高さ寸法を低くでき、回転式電子部品の薄型化が図れる。同時に傾斜面への摺動子の底部の当接位置は、摺動子の挿入孔の周囲部分よりも摺動子の回転中心から離れた位置となるので、摺動子を回動する際のトルクを容易に大きくすることができ、トルクを大きくしたいという場合の要求に容易に答えることができる。 According to the first and second aspects of the invention, since the bottom of the slider is brought into contact with the inclined surface of the substrate, the height of the slider from the top surface of the substrate can be reduced, and the rotary electronic component Thinning can be achieved. At the same time, the contact position of the bottom of the slider to the inclined surface is farther from the center of rotation of the slider than the peripheral portion of the slider insertion hole. The torque can be easily increased, and the request for increasing the torque can be easily answered.

請求項３に記載の発明によれば、摺動子の挿入孔の周囲部分と基板との間に空隙部を設けたので、軸の先端をかしめる際に基板に割れ（ヒビ）などが生じることを防止できる。また基板の割れ（ヒビ）などが生じないので、軸をかしめる際の力を大きくすることができ、この点からも摺動子を回動する際のトルクを容易に大きくすることができ、トルクを大きくしたいという場合の要求に容易に答えることができる。 According to the third aspect of the present invention, since the gap is provided between the peripheral portion of the insertion hole of the slider and the substrate, the substrate is cracked (cracked) when the tip of the shaft is crimped. Can be prevented. In addition, since the substrate does not crack (crack), the force when caulking the shaft can be increased, and from this point, the torque when rotating the slider can be easily increased. It is possible to easily answer the request for increasing the torque.

また摺動子の挿入孔の周囲部分は空隙部によってバネ性を有した状態で軸にかしめられるので、軸のかしめ状態にばらつきがあってもそのばらつきは前記バネ性によって吸収され、摺動子を回動する際のトルクを一定にすることができる。 Also, since the peripheral portion of the insertion hole of the slider is caulked to the shaft in a state having a spring property by the gap portion, even if the caulking state of the shaft varies, the variation is absorbed by the spring property, and the slider The torque when rotating can be made constant.

以下、本発明の実施形態を図面を参照して詳細に説明する。図１は回転式電子部品１−１の斜視図、図２は概略側断面図（図１のＡ−Ａ断面図）、図３は回転式電子部品１−１を上側から見た分解斜視図、図４は回転式電子部品１−１を下側から見た分解斜視図である。これらの図に示すように回転式電子部品１−１は、基板１０と、軸３３を有する中端子（集電板）３０と、摺動子７０とを具備して構成されている。以下各構成部品について説明する。なお以下の説明において、「上」とは基板１０から見て摺動子７０側をいい、「下」とはその反対側を言うものとする。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view of the rotary electronic component 1-1, FIG. 2 is a schematic side sectional view (AA sectional view of FIG. 1), and FIG. 3 is an exploded perspective view of the rotary electronic component 1-1 as viewed from above. FIG. 4 is an exploded perspective view of the rotary electronic component 1-1 as viewed from below. As shown in these drawings, the rotary electronic component 1-1 includes a substrate 10, a middle terminal (current collector plate) 30 having a shaft 33, and a slider 70. Each component will be described below. In the following description, “upper” refers to the slider 70 side when viewed from the substrate 10, and “lower” refers to the opposite side.

基板１０は略矩形状の絶縁板１１の中央に軸挿通穴１３を有し、基板１０の上面の軸挿通穴１３を囲む部分に略Ｃ字状の摺接パターン（以下「抵抗体パターン」という）１５を設け、また抵抗体パターン１５の両端に導電パターン（例えば銀パラジウム製パターン）からなる端子部１７を接続形成して構成されている。端子部１７は絶縁板１１の外周辺位置に設けられている。また基板１０の下面には中端子３０を挿入して位置決めする凹状の収納部１９が設けられている。また基板１０の端子部１７を設けた辺の反対側の辺の中央には、矩形状に凹む端子挿入溝２１が設けられている。絶縁板１１はセラミック製であり、この実施形態ではアルミナを成形・焼成して構成されている。 The substrate 10 has a shaft insertion hole 13 at the center of a substantially rectangular insulating plate 11, and a substantially C-shaped sliding contact pattern (hereinafter referred to as a “resistor pattern”) at a portion surrounding the shaft insertion hole 13 on the upper surface of the substrate 10. ) 15, and terminal portions 17 made of a conductive pattern (for example, a pattern made of silver palladium) are connected and formed at both ends of the resistor pattern 15. The terminal portion 17 is provided at an outer peripheral position of the insulating plate 11. In addition, a concave storage portion 19 for inserting and positioning the middle terminal 30 is provided on the lower surface of the substrate 10. A terminal insertion groove 21 that is recessed in a rectangular shape is provided in the center of the side opposite to the side on which the terminal portion 17 of the substrate 10 is provided. The insulating plate 11 is made of ceramic, and in this embodiment, the insulating plate 11 is formed by molding and firing alumina.

そしてこの基板１０においては、基板１０の上面の軸挿通穴１３の周囲の面を軸挿通穴１３に向かって凹となるリング状の傾斜面２３としている。傾斜面２３の形状は、軸挿通穴１３の上下に向かう中心軸を中心軸として仮想した下向きの円錐（又はすり鉢）の外周面の一部の部分の形状を有しており、この傾斜面２３には下記する摺動子７０の底部７５が当接する。言い換えれば傾斜面２３は、軸挿通穴１３に向かってその上面を下方に傾斜させていく傾斜面である。 In the substrate 10, the surface around the shaft insertion hole 13 on the upper surface of the substrate 10 is a ring-shaped inclined surface 23 that is concave toward the shaft insertion hole 13. The shape of the inclined surface 23 has the shape of a part of the outer peripheral surface of a downward cone (or mortar) with the central axis going up and down of the shaft insertion hole 13 as the central axis. The bottom portion 75 of the slider 70 described below contacts. In other words, the inclined surface 23 is an inclined surface in which the upper surface is inclined downward toward the shaft insertion hole 13.

中端子３０は、前記基板１０に設けた一対の端子部１７と共に回転式電子部品１−１の電気的出力を外部に取り出す端子の１つであり、金属板製（この実施形態では鉄製）であって、略矩形状の平板部３１の所定位置に上方向に筒状に突出する軸３３を設け、さらに外周の１側辺（前記基板１０の端子挿入溝２１を設けた側の辺）に舌片状に突出して上方向に直角に折り曲げてなる先端片３５を設けて構成されている。前記軸３３は前記基板１０の軸挿通穴１３内にほぼぴったり挿入される外形形状を有し、前記平板部３１は前記基板１０の収納部１９内に収納される外形形状を有し、前記先端片３５は前記基板１０の端子挿入溝２１内に収納される外形形状を有している。 The middle terminal 30 is one of terminals for taking out the electrical output of the rotary electronic component 1-1 together with the pair of terminal portions 17 provided on the substrate 10, and is made of a metal plate (made of iron in this embodiment). In addition, a shaft 33 that protrudes upward in a cylindrical shape is provided at a predetermined position of the substantially rectangular flat plate portion 31, and further on one side of the outer periphery (side on which the terminal insertion groove 21 of the substrate 10 is provided). A tip piece 35 is provided which protrudes in the shape of a tongue and is bent at a right angle in the upward direction. The shaft 33 has an outer shape that is almost exactly inserted into the shaft insertion hole 13 of the substrate 10, and the flat plate portion 31 has an outer shape that is stored in the storage portion 19 of the substrate 10, and the tip The piece 35 has an outer shape accommodated in the terminal insertion groove 21 of the substrate 10.

摺動子７０は、下板７１と上板７３とを連結部７２で連結した１枚の金属板（この実施形態ではステンレス板）で構成され、連結部７２の部分を折り曲げることで下板７１の上に上板７３を重ね合わせて構成されている。上板７３は略円板状の平板であって、その中央に操作治具（プラス又はマイナスドライバ）挿入用の貫通する十字型の治具挿入部７７を設けている。 The slider 70 is composed of a single metal plate (a stainless steel plate in this embodiment) in which a lower plate 71 and an upper plate 73 are connected by a connecting portion 72, and the lower plate 71 is bent by bending a portion of the connecting portion 72. The upper plate 73 is overlaid on the top. The upper plate 73 is a substantially disc-shaped flat plate, and a cross-shaped jig insertion portion 77 is provided in the center thereof for inserting an operation jig (plus or minus driver).

下板７１は略円板状の平板の中央に、下方向（基板１０方向）に向かって凸となる皿状（又はすり鉢状）に湾曲してなる底部７５を設け、この底部７５の中央に前記中端子３０の軸３３を回動自在に挿入する挿入孔７９を設けている。また下板７１の外周には半円弧状のアーム部８１が設けられ、その中央には下方向（基板１０方向）にＶ字状に折り曲げてなる摺動接点８３を形成している。また下板７１の底部７５周囲の前記上板７３の治具挿入部７７に対向する部分にも、平行な両側辺を切り欠いてその中間部分を下方向に突出変形させてなる操作治具（プラス又はマイナスドライバ）挿入用の４つの治具挿入部８５を設けている。 The lower plate 71 is provided with a bottom portion 75 that is curved in a dish shape (or mortar shape) that protrudes downward (in the direction of the substrate 10) at the center of a substantially disc-shaped flat plate. An insertion hole 79 through which the shaft 33 of the middle terminal 30 is rotatably inserted is provided. In addition, a semicircular arc-shaped arm portion 81 is provided on the outer periphery of the lower plate 71, and a sliding contact 83 is formed at the center thereof by bending it downward (in the direction of the substrate 10) into a V shape. In addition, an operation jig (not shown) is formed by cutting out both sides of the upper plate 73 around the bottom portion 75 of the lower plate 71 facing the jig insertion portion 77 and projecting and deforming the middle portion thereof downward. Four jig insertion portions 85 for insertion (plus or minus screwdriver) are provided.

なお底部７５の形状についてもう少し詳しく説明すると、底部７５は、図２に示すように、その側断面において、中央部分は平たい円板状であってその中央に挿入孔７９を設けると共に、半径方向外方に向かって上方向に略円弧状に湾曲しながらその外形寸法を大きくしてゆく形状に形成されている。 The shape of the bottom portion 75 will be described in more detail. As shown in FIG. 2, the bottom portion 75 has a flat disk-shaped central portion with an insertion hole 79 in the center thereof, as shown in FIG. It is formed in a shape that increases its outer dimensions while curving in a substantially arc shape upward.

そして回転式電子部品１−１を組み立てるには、基板１０の下面に中端子３０を配置し、その際基板１０の収納部１９内に中端子３０の平板部３１を収納し、同時に基板１０の軸挿通穴１３に中端子３０の軸３３を挿入し、これによって基板１０の軸挿通穴１３を通して基板１０上に軸３３を突出する。 In order to assemble the rotary electronic component 1-1, the middle terminal 30 is arranged on the lower surface of the substrate 10, and the flat plate portion 31 of the middle terminal 30 is accommodated in the accommodating portion 19 of the substrate 10. The shaft 33 of the middle terminal 30 is inserted into the shaft insertion hole 13, and thereby the shaft 33 protrudes on the substrate 10 through the shaft insertion hole 13 of the substrate 10.

次に基板１０の上面に摺動子７０を配置し、その際前記基板１０の軸挿通穴１３を通して基板１０上に突出する軸３３を摺動子７０の挿入孔７９に挿入し、この挿入孔７９に挿入した軸３３の先端をかしめることで基板１０上に回動自在に摺動子７０を設置する。このとき摺動子７０の摺動接点８３は基板１０の抵抗体パターン１５に弾接している。 Next, the slider 70 is disposed on the upper surface of the substrate 10, and at this time, the shaft 33 protruding on the substrate 10 through the shaft insertion hole 13 of the substrate 10 is inserted into the insertion hole 79 of the slider 70, and this insertion hole The slider 70 is rotatably installed on the substrate 10 by caulking the tip of the shaft 33 inserted into 79. At this time, the sliding contact 83 of the slider 70 is in elastic contact with the resistor pattern 15 of the substrate 10.

図５は軸３３によって摺動子７０を回動自在に支持している部分の要部拡大概略断面図である。同図に示すようにこの回転式電子部品１−１においては、基板１０の傾斜面２３の途中（半径方向の略中央）に摺動子７０の底部７５の下面（湾曲している部分）を当接しており、またこれによって摺動子７０の挿入孔７９の周囲部分７９ａと基板１０の上面との間に空隙部Ａ１を設けている。 FIG. 5 is an enlarged schematic cross-sectional view of a main part of a portion in which the slider 70 is rotatably supported by the shaft 33. As shown in the figure, in the rotary electronic component 1-1, the lower surface (curved portion) of the bottom portion 75 of the slider 70 is provided in the middle of the inclined surface 23 of the substrate 10 (substantially the center in the radial direction). In this manner, a gap A <b> 1 is provided between the peripheral portion 79 a of the insertion hole 79 of the slider 70 and the upper surface of the substrate 10.

そして摺動子７０の治具挿入部７７，８５に図示しない操作治具を挿入してこれを回動すれば、摺動子７０が回動して摺動接点８３が抵抗体パターン１５上を摺動し、両端子部１７と中端子３０間の抵抗値が変化する。 When an operation jig (not shown) is inserted into the jig insertion portions 77 and 85 of the slider 70 and rotated, the slider 70 rotates and the sliding contact 83 moves on the resistor pattern 15. It slides and the resistance value between the both terminal parts 17 and the middle terminal 30 changes.

ところでこの回転式電子部品１−１においては、基板１０上面の軸挿通穴１３の周囲の面に設けた傾斜面２３に摺動子７０の底部７５を当接させているので、底部７５の基板１０への当接位置は基板１０の上面（傾斜面２３の外側の上面）よりも低い位置となる。従って摺動子７０の基板１０上面からの高さ寸法を低くでき、回転式電子部品１−１の薄型化が図れる。 By the way, in this rotary electronic component 1-1, since the bottom part 75 of the slider 70 is made to contact | abut on the inclined surface 23 provided in the surrounding surface of the shaft insertion hole 13 of the board | substrate 10 upper surface, the board | substrate of the bottom part 75 is used. 10 is lower than the upper surface of the substrate 10 (the upper surface outside the inclined surface 23). Therefore, the height dimension of the slider 70 from the upper surface of the substrate 10 can be reduced, and the thickness of the rotary electronic component 1-1 can be reduced.

同時に傾斜面２３への摺動子７０の底部７５の当接位置Ｔは、摺動子７０の挿入孔７９の周囲部分７９ａよりも摺動子７０の回転中心Ｌから離れた位置となる。従って従来のように底部７５の当接位置が周囲部分７９ａである場合に比べ、半径が大きい分、摺動子７０を回動する際のトルクを容易に大きくすることができ、トルクを大きくしたいという場合の要求に容易に答えることができる。 At the same time, the contact position T of the bottom portion 75 of the slider 70 with the inclined surface 23 is located farther from the rotation center L of the slider 70 than the peripheral portion 79 a of the insertion hole 79 of the slider 70. Therefore, compared with the conventional case where the contact position of the bottom portion 75 is the peripheral portion 79a, the torque when rotating the slider 70 can be easily increased by the amount of the radius, and it is desired to increase the torque. It is possible to easily answer the request.

また上述のようにこの回転式電子部品１−１においては、摺動子７０の挿入孔７９の周囲部分７９ａと基板１０との間に空隙部Ａ１を設けたので、軸３３の先端をかしめる際に最も力が加わる周囲部分７９ａが空隙部Ａ１に面することよって容易に下方向に撓むことができ、その力がもろい材質からなる基板１０に直接印加されず、基板１０に割れ（ヒビ）などが生じることを確実に防止できる。また基板１０の割れ（ヒビ）などが生じないので、軸３３をかしめる際の力を大きくすることができ、この点からも摺動子７０を回動する際のトルクを容易に大きくすることができ、トルクを大きくしたいという場合の要求に容易に答えることができる。なお軸３３の先端をかしめた際に基板１０にかかる力の方向は、図５に示す矢印Ｂのように、底部７５の当接位置Ｔから傾斜面２３に略垂直な方向になるので、力の方向に対する基板１０の厚みは厚く、基板１０の強度は十分保てる。一方基板１０の軸挿通穴１３の周囲の部分はその厚みがかなり薄くなるが、この部分には力が加わらないので、この部分に割れが生じるなどの問題も生じない。 Further, as described above, in the rotary electronic component 1-1, since the gap A1 is provided between the peripheral portion 79a of the insertion hole 79 of the slider 70 and the substrate 10, the tip of the shaft 33 is caulked. When the peripheral portion 79a to which the most force is applied faces the gap A1, it can be easily bent downward, and the force is not directly applied to the substrate 10 made of a fragile material, and the substrate 10 is cracked (cracked). ) And the like can be reliably prevented. Further, since the substrate 10 is not cracked, the force for caulking the shaft 33 can be increased, and from this point, the torque for rotating the slider 70 can be easily increased. It is possible to easily answer the request for increasing the torque. The direction of the force applied to the substrate 10 when the tip of the shaft 33 is caulked becomes a direction substantially perpendicular to the inclined surface 23 from the contact position T of the bottom 75 as shown by an arrow B in FIG. The thickness of the substrate 10 with respect to this direction is large, and the strength of the substrate 10 can be kept sufficiently. On the other hand, the thickness of the portion around the shaft insertion hole 13 of the substrate 10 is considerably thin. However, since no force is applied to this portion, there is no problem such as cracking in this portion.

また摺動子７０の挿入孔７９の周囲部分７９ａは空隙部Ａ１によってバネ性を有した状態で軸３３にかしめられるので、軸３３のかしめ状態（かしめの力等）にばらつきがあってもそのばらつきは前記バネ性によって吸収され、摺動子７０を回動する際のトルクを一定に安定させることができる。 Further, since the peripheral portion 79a of the insertion hole 79 of the slider 70 is caulked to the shaft 33 in a state having a spring property by the gap portion A1, even if the caulking state (caulking force or the like) of the shaft 33 varies. The variation is absorbed by the spring property, and the torque when the slider 70 is rotated can be made constant and stable.

なお本発明を適用する回転式電子部品は、上記構造の回転式電子部品１−１に限定されるものではなく、他の各種構造の回転式電子部品にも同様に適用できるものであり、要は、軸挿通穴１３を有し、上面に摺接パターン１５を設けてなる基板１０と、基板１０の軸挿通穴１３を通して基板１０上に突出する軸３３と、皿状の底部７５を有し、この底部７５中央に軸３３を回動自在に挿入する挿入孔７９を設け、この挿入孔７９に挿入した軸３３の先端をかしめることで基板１０上に回動自在に設置される摺動子７０と、を具備してなる回転式電子部品であればどのような構造の回転式電子部品であっても良い。 The rotary electronic component to which the present invention is applied is not limited to the rotary electronic component 1-1 having the above structure, and can be similarly applied to rotary electronic components having other various structures. Has a shaft insertion hole 13, a substrate 10 provided with a sliding contact pattern 15 on the upper surface, a shaft 33 protruding on the substrate 10 through the shaft insertion hole 13 of the substrate 10, and a dish-shaped bottom portion 75. An insertion hole 79 through which the shaft 33 is rotatably inserted is provided at the center of the bottom 75, and the sliding movement of the shaft 33 inserted into the insertion hole 79 is rotatably installed on the substrate 10. The rotary electronic component having any structure may be used as long as it is a rotary electronic component including the child 70.

図６，図７はそのような本発明の他の構造の回転式電子部品の例を示す図であり、図６は回転式電子部品１−２の概略側断面図（図２と同一部分の側断面図）、図７は回転式電子部品１−３の概略側断面図（図２と同一部分の側断面図）である。これら図６，図７に示す回転式電子部品１−２，１−３において、前記図１〜図５に示す回転式電子部品１−１と同一又は相当部分には同一符号を付す。なお以下で説明する事項以外の事項については、前記図１〜図５に示す実施形態と同じである。 6 and 7 are diagrams showing examples of such a rotary electronic component having another structure according to the present invention. FIG. 6 is a schematic sectional side view of the rotary electronic component 1-2 (the same part as FIG. 2). FIG. 7 is a schematic side sectional view (a side sectional view of the same part as FIG. 2) of the rotary electronic component 1-3. In these rotary electronic components 1-2 and 1-3 shown in FIGS. 6 and 7, the same or corresponding parts as those of the rotary electronic component 1-1 shown in FIGS. Note that matters other than those described below are the same as those in the embodiment shown in FIGS.

図６に示す回転式電子部品１−２は、電気的出力を外部に取り出す端子としての機能を有する中端子を用いない構造の回転式電子部品である。つまり中端子の代りに金属板製の軸３３の下端部に平板状で矩形状の基部３４を一体に設けた軸部材３７を用いている。そして基部３４を基板１０の下面に形成した凹状の収納部１９に収納し、その際基板１０の軸挿通穴１３を通して基板１０上に突出する軸部材３７の軸３３を摺動子７０の挿入孔７９に挿入して軸３３の先端をかしめることで基板１０上に摺動子７０を回動自在に設置している。軸部材３７は単に摺動子７０を機械的に回動自在に軸支するものである。 The rotary electronic component 1-2 shown in FIG. 6 is a rotary electronic component having a structure that does not use a middle terminal having a function as a terminal for taking out an electrical output to the outside. That is, instead of the middle terminal, a shaft member 37 in which a flat plate-like rectangular base 34 is integrally provided at the lower end of a shaft 33 made of a metal plate is used. Then, the base portion 34 is accommodated in a concave accommodating portion 19 formed on the lower surface of the substrate 10, and at this time, the shaft 33 of the shaft member 37 protruding on the substrate 10 through the shaft insertion hole 13 of the substrate 10 is inserted into the insertion hole of the slider 70. The slider 70 is rotatably installed on the substrate 10 by being inserted into 79 and caulking the tip of the shaft 33. The shaft member 37 simply supports the slider 70 so as to be mechanically rotatable.

そして図１〜図５に示す回転式電子部品１−１の中端子３０に相当する端子部３０ａは、前記回転式電子部品１−１の一対の端子部１７と同様に、導電パターンによって絶縁板１１の外周辺位置の一対の端子部１７の間の位置に形成されている。図示はしないが摺動子７０の底部７５が当接する基板１０の傾斜面２３上には導電パターンが形成されており、この導電パターンと前記端子部３０ａ間は図示しない導電パターンによって連結されている。 The terminal portion 30a corresponding to the middle terminal 30 of the rotary electronic component 1-1 shown in FIGS. 1 to 5 is insulated by a conductive pattern, like the pair of terminal portions 17 of the rotary electronic component 1-1. 11 is formed at a position between the pair of terminal portions 17 at the outer peripheral position. Although not shown, a conductive pattern is formed on the inclined surface 23 of the substrate 10 with which the bottom portion 75 of the slider 70 contacts, and the conductive pattern and the terminal portion 30a are connected by a conductive pattern (not shown). .

一方図７に示す回転式電子部品１−３において前記回転式電子部品１−１と相違する点は、中端子３０の平板部３１を合成樹脂材からなる絶縁板１１の内部に設置（この実施形態の場合はインサート成形）した点である。絶縁板１１としてこの実施形態では合成樹脂の成形品を用いているが、他の各種絶縁板を用いて構成しても良い。なおこの実施形態では一対の端子板１７Ａとして金属板を用いている。これら端子板１７Ａは絶縁板１１上において抵抗体パターン１５（図７には図示せず）と電気的に接続されている。 On the other hand, the rotary electronic component 1-3 shown in FIG. 7 is different from the rotary electronic component 1-1 in that the flat plate portion 31 of the middle terminal 30 is installed inside the insulating plate 11 made of a synthetic resin material (this embodiment). In the case of a form, it is the point which carried out insert molding). In this embodiment, a molded product of a synthetic resin is used as the insulating plate 11, but other insulating plates may be used. In this embodiment, a metal plate is used as the pair of terminal plates 17A. These terminal plates 17A are electrically connected to the resistor pattern 15 (not shown in FIG. 7) on the insulating plate 11.

上記何れの回転式電子部品１−２，１−３においても、上記回転式電子部品１−１と同様に、基板１０上面の軸挿通穴１３の周囲の面を軸挿通穴１３に向かって凹となる傾斜面２３とし、この傾斜面２３に摺動子７０の底部７５を当接させる構成としており、また摺動子７０の挿入孔７９の周囲部分７９ａと基板１０との間に空隙部Ａ１を設けた構成としており、従って上記回転式電子部品１−１と同一の作用効果を有する。 In any of the rotary electronic components 1-2 and 1-3, the surface around the shaft insertion hole 13 on the upper surface of the substrate 10 is recessed toward the shaft insertion hole 13 in the same manner as the rotary electronic component 1-1. The bottom surface 75 of the slider 70 is brought into contact with the inclined surface 23, and the gap A1 is formed between the peripheral portion 79a of the insertion hole 79 of the slider 70 and the substrate 10. Therefore, it has the same effect as the rotary electronic component 1-1.

以上本発明の実施形態を説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲、及び明細書と図面に記載された技術的思想の範囲内において種々の変形が可能である。なお直接明細書及び図面に記載のない何れの形状・構造・材質であっても、本願発明の作用・効果を奏する以上、本願発明の技術的思想の範囲内である。例えば基板１０、中端子３０、摺動子７０のそれぞれの材質は上記実施形態に示した材質に限られず、他の種々の材質のものを用いても良い。また基板１０としては、硬質板上に可撓性を有する合成樹脂フイルム製のフレキシブル回路基板を載置する構造の基板であっても良い。要は軸挿通穴を有し、上面に摺接パターンを設けてなる基板であればどのような構成・材質の基板であっても良い。また軸３３の形状構造も種々の変形が可能であり、例えば筒状の軸３３のみを基板１０の軸挿通穴１３内に設置しても良い。また軸３３中央の開口は塞いでも良い。また摺動子７０の底部７５の形状も種々の変形が可能であり、要は基板１０方向に向かって凸となる皿状の底部７５であればどのような形状であっても良い。基板１０の傾斜面２３も必ずしも円錐面の一部で形成しなくても良く、要は基板１０の挿通穴１３に向かって凹となる傾斜面であればどのような形状であっても良い。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, the materials of the substrate 10, the middle terminal 30, and the slider 70 are not limited to the materials shown in the above embodiment, and other various materials may be used. Further, the substrate 10 may be a substrate having a structure in which a flexible circuit board made of a synthetic resin film having flexibility is placed on a hard plate. In short, any substrate of any configuration and material may be used as long as it has a shaft insertion hole and is provided with a sliding contact pattern on the upper surface. The shape structure of the shaft 33 can be variously modified. For example, only the cylindrical shaft 33 may be installed in the shaft insertion hole 13 of the substrate 10. The opening at the center of the shaft 33 may be closed. Also, the shape of the bottom portion 75 of the slider 70 can be variously modified. In short, any shape may be used as long as it is a dish-shaped bottom portion 75 that protrudes toward the substrate 10. The inclined surface 23 of the substrate 10 is not necessarily formed as a part of the conical surface, and may be any shape as long as the inclined surface is concave toward the insertion hole 13 of the substrate 10.

また上記実施形態では本発明を半固定可変抵抗器に適用した例を示したが、他の回転式可変抵抗器や回転式スイッチ等にも同様に適用可能であることはいうまでもない。また上記実施形態では２枚の板（下板７１と上板７３）を重ね合わせて摺動子７０を構成したが、重ね合わせない１枚の板で構成した摺動子であっても良く、また３枚以上の板を重ね合わせてなる摺動子であっても良い。 Moreover, although the example which applied this invention to the semi-fixed variable resistor was shown in the said embodiment, it cannot be overemphasized that it is applicable similarly to another rotary variable resistor, a rotary switch, etc. In the above embodiment, the slider 70 is configured by overlapping two plates (the lower plate 71 and the upper plate 73). However, the slider 70 may be configured by a single plate that is not overlapped, Further, a slider formed by superposing three or more plates may be used.

回転式電子部品１−１の斜視図である。It is a perspective view of the rotary electronic component 1-1. 回転式電子部品１−１の概略側断面図（図１のＡ−Ａ断面図）である。It is a schematic sectional side view (AA sectional drawing of FIG. 1) of the rotary electronic component 1-1. 回転式電子部品１−１を上側から見た分解斜視図である。It is the disassembled perspective view which looked at the rotary electronic component 1-1 from the upper side. 回転式電子部品１−１を下側から見た分解斜視図である。It is the disassembled perspective view which looked at the rotary electronic component 1-1 from the lower side. 軸３３が摺動子７０を回動自在に支持している部分の要部拡大概略断面図である。It is a principal part expansion schematic sectional drawing of the part which the axis | shaft 33 is supporting the slider 70 rotatably. 回転式電子部品１−２の概略側断面図である。It is a schematic sectional side view of the rotary electronic component 1-2. 回転式電子部品１−３の概略側断面図である。It is a schematic sectional side view of the rotary electronic component 1-3.

符号の説明Explanation of symbols

１−１回転式電子部品
１０基板
１３軸挿通穴
１５抵抗体パターン（摺接パターン）
１７端子部
２３傾斜面
３０中端子
３３軸
７０摺動子
７５底部
７９挿入孔
７９ａ周囲部分
Ａ１空隙部
１−２回転式電子部品
１−３回転式電子部品 1-1 Rotary electronic component 10 Substrate 13 Shaft insertion hole 15 Resistor pattern (sliding contact pattern)
17 Terminal portion 23 Inclined surface 30 Middle terminal 33 Shaft 70 Slider 75 Bottom 79 Insertion hole 79a Surrounding portion A1 Gap 1-2 Rotary electronic component 1-3 Rotary electronic component

Claims

軸挿通穴を有し、上面に摺接パターンを設けてなる基板と、
前記基板の軸挿通穴を通して基板上に突出する軸と、
皿状の底部を有し、この底部中央に前記軸を回動自在に挿入する挿入孔を設け、この挿入孔に挿入した前記軸の先端をかしめることで基板上に回動自在に設置される摺動子と、を具備してなる回転式電子部品において、
前記基板上面の軸挿通穴の周囲の面を軸挿通穴に向かって凹となる傾斜面とし、この傾斜面に前記摺動子の底部を当接させることを特徴とする回転式電子部品。 A substrate having a shaft insertion hole and having a sliding contact pattern on the upper surface;
A shaft protruding on the substrate through the shaft insertion hole of the substrate;
It has a dish-shaped bottom part, and an insertion hole is provided in the center of the bottom part to rotatably insert the shaft. The tip of the shaft inserted into the insertion hole is caulked to be installed on the substrate. A rotary electronic component comprising:
A rotary electronic component characterized in that a surface around the shaft insertion hole on the upper surface of the substrate is an inclined surface that is concave toward the shaft insertion hole, and a bottom portion of the slider is brought into contact with the inclined surface.

前記軸は、前記回転式電子部品の電気的出力を外部に取り出す中端子の一部に形成されていることを特徴とする請求項１に記載の回転式電子部品。 2. The rotary electronic component according to claim 1, wherein the shaft is formed at a part of a middle terminal for taking out an electrical output of the rotary electronic component to the outside.

前記摺動子の挿入孔の周囲部分と基板との間に空隙部を設けたことを特徴とする請求項１又は２に記載の回転式電子部品。 The rotary electronic component according to claim 1, wherein a gap is provided between a peripheral portion of the insertion hole of the slider and the substrate.