JP2005043287A

JP2005043287A - Pointer type instrument

Info

Publication number: JP2005043287A
Application number: JP2003279392A
Authority: JP
Inventors: Hiroyasu Numaya; 宏康沼屋; Takuo Hirokawa; 拓郎広川
Original assignee: Nippon Seiki Co Ltd
Current assignee: Nippon Seiki Co Ltd
Priority date: 2003-07-24
Filing date: 2003-07-24
Publication date: 2005-02-17

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pointer type instrument capable of reducing a frictional resistance. <P>SOLUTION: This instrument is equipped with a display device 2 for displaying prescribed information on a display surface, an index plate 4 having a see-through part 41 arranged in front of the display device 2, enabling to see through the display surface and an index part 42 arrayed around the see-through part 41, a flexible member 5 extending along the index part 42 around the see-through part 41, a pointer 7 fixed to the flexible member 5, a driving device 8 for moving the pointer 7 along the index part 42 by moving the flexible member 5 in the longitudinal direction, and a guide body 9 provided along the index part 42, for moving and guiding the flexible member 5. The flexible member 5 is provided with a projection part comprising a tooth row 51 for reducing the contact area with the guide body 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、例えば自動車を代表とする車両に搭載される指針式計器に関し、特に指針の仮想回転中心を含む指標板の中央領域に、貫通部または透明部からなる透視部が形成され、この透視部を通じて指標板の背後に配置される液晶表示装置のごとき表示装置を視認させると共に、透視部の外周にて指針式表示を行う指針式計器（以降、便宜上、センターレスタイプの指針式計器と称する）に関する。 The present invention relates to a pointer-type instrument mounted on a vehicle represented by, for example, an automobile, and in particular, a see-through portion formed of a penetrating portion or a transparent portion is formed in a central region of an indicator plate including a virtual rotation center of the pointer. A pointer-type instrument that allows a display device such as a liquid crystal display device disposed behind the indicator plate to be visually recognized through the section and performs pointer-type display on the outer periphery of the fluoroscopic section (hereinafter referred to as a centerless type pointer-type instrument for convenience) )

この種センターレスタイプの指針式計器として、例えば下記特許文献１、２に記載されているものが知られている。特許文献１の指針式計器は、環状のギヤホイールに指針を固定し、この指針付き回転移動体を駆動装置を通じて回転させることにより、透視部の外周で指針式表示を行う構成である。一方、特許文献２に記載の指針式計器は、帯状の柔軟部材に指針を固定し、この指針付き帯状柔軟部材を駆動装置を通じて長手方向に移動させることにより、透視部の外周で指針式表示を行う構成であり、この場合、帯状柔軟部材はガイド体によって移動案内される。
特開２０００−１３１０９９号公報欧州特許出願公開第０８９５５７９号明細書 As this kind of centerless type pointer-type meter, for example, those described in Patent Documents 1 and 2 below are known. The pointer-type instrument of Patent Document 1 is configured to display a pointer-type display on the outer periphery of the fluoroscopic portion by fixing the pointer to an annular gear wheel and rotating the rotating movable body with the pointer through a driving device. On the other hand, the pointer-type instrument described in Patent Document 2 fixes the pointer on the belt-shaped flexible member, and moves the belt-shaped flexible member with the pointer in the longitudinal direction through the driving device, thereby displaying the pointer-type display on the outer periphery of the fluoroscopic portion. In this case, the belt-like flexible member is guided to move by the guide body.
JP 2000-1331099 A European Patent Application No. 0895579

このようにセンターレスタイプの指針式計器には、ギヤホイールによって指針を移動させるものと、帯状柔軟部材によって指針を移動させるものが知られているが、指針の移動経路が真円に固定されるギヤホイールタイプに対し、帯状柔軟部材タイプは、指針の移動経路を比較的自由に設定できるという利点を有している。 As described above, there are known centerless type pointer-type instruments that move the pointer by a gear wheel and those that move the pointer by a strip-shaped flexible member, but the movement path of the pointer is fixed to a perfect circle. In contrast to the gear wheel type, the belt-like flexible member type has an advantage that the movement path of the pointer can be set relatively freely.

しかしながら、特許文献２記載の指針式計器では、帯状柔軟部材とガイド体の外壁とが面接触にて密着する構成であるため、摩擦抵抗が大きく、これにより例えば指針動作のスムーズ性の低下、ヒステリシスの増加に伴う指示精度の低下、駆動装置の大型化、消費電流の増加といった問題が生じる。
そこで本発明は、前述の課題に対して対処するため、柔軟部材を用いて指針を移動させるにあたり、摩擦抵抗を小さくし得る指針式計器の提供を目的とするものである。 However, the pointer-type instrument described in Patent Document 2 has a configuration in which the belt-shaped flexible member and the outer wall of the guide body are in close contact with each other due to surface contact, and thus the frictional resistance is large. This causes problems such as a decrease in indication accuracy, an increase in the size of the driving device, and an increase in current consumption.
SUMMARY OF THE INVENTION In order to address the above-described problems, an object of the present invention is to provide a pointer-type instrument that can reduce frictional resistance when moving a pointer using a flexible member.

本発明は、表示面に所定情報を表示する表示装置と、この表示装置の前方に配置され前記表示面を透視可能とする透視部とこの透視部の周囲に配列された指標部とを有する指標板と、前記透視部の周囲を前記指標部に沿って延びる柔軟部材と、この柔軟部材に固定される指針と、前記柔軟部材をその長手方向に移動させることにより前記指針を前記指標部に沿って移動させる駆動装置と、前記指標部に沿って設けられ前記柔軟部材を移動案内するガイド体とを備え、前記柔軟部材または前記ガイド体の少なくとも一方に両者の接触面積を減少させる突出部を設けたことを特徴とする。 The present invention provides an indicator having a display device that displays predetermined information on a display surface, a fluoroscopic portion that is disposed in front of the display device so that the display surface can be seen through, and an indicator portion that is arranged around the fluoroscopic portion. A plate, a flexible member extending around the fluoroscopic portion along the indicator portion, a pointer fixed to the flexible member, and moving the flexible member in the longitudinal direction thereof to move the pointer along the indicator portion And a guide body that is provided along the index portion and moves and guides the flexible member, and at least one of the flexible member or the guide body is provided with a protrusion that reduces a contact area between the two. It is characterized by that.

また本発明は、前記柔軟部材が歯列を備えたギヤードベルトからなり、前記歯列の頂部によって前記突出部を構成したことを特徴とする。 In the invention, it is preferable that the flexible member is a geared belt provided with a tooth row, and the protruding portion is constituted by a top portion of the tooth row.

本発明によれば、初期の目的を達成でき、柔軟部材の摩擦抵抗を小さくすることが可能な指針式計器を提供できる。 According to the present invention, it is possible to provide a pointer-type instrument that can achieve the initial purpose and can reduce the frictional resistance of the flexible member.

以下、図面に基づいて本発明による指針式計器の実施形態について説明する。図１〜図５は、本発明の第１の実施形態を示すもので、図１は本実施形態による指針式計器の正面図、図２は図１のＡ−Ａ断面図、図３は図１中、被覆パネルとガイド体の一部を取り外した際の正面図で柔軟部材の一部を拡大して示す図、図４は図３中、指針付近の拡大正面図、図５はホルダと柔軟部材との結合状態を示す要部斜視図である。 Hereinafter, embodiments of a pointer-type instrument according to the present invention will be described with reference to the drawings. 1 to 5 show a first embodiment of the present invention. FIG. 1 is a front view of a pointer-type meter according to this embodiment, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1 is a front view of the cover panel and a part of the guide body removed, and a part of the flexible member is enlarged. FIG. 4 is an enlarged front view of the vicinity of the pointer in FIG. 3, and FIG. It is a principal part perspective view which shows a coupling | bonding state with a flexible member.

本実施形態による指針式計器は、図１〜図３に示すように、回路基板１と、この回路基板１上に配置される表示装置２と、この表示装置２の周囲を覆うように配置されるケース体３と、このケース体３の前方に配置される指標板４と、この指標板４の前方に位置して引き回される柔軟部材５と、この柔軟部材５に固定されるホルダー６と、このホルダー６を介して柔軟部材５に固定される指針７と、柔軟部材５をその長手方向に移動させることで指針７を移動させる駆動装置８と、柔軟部材５を移動案内するガイド体９と、このガイド体９の前方側を含む所要領域を覆う被覆パネル１０とを備える。 As shown in FIGS. 1 to 3, the pointer-type instrument according to the present embodiment is arranged to cover the circuit board 1, the display device 2 arranged on the circuit board 1, and the periphery of the display device 2. Case body 3, an indicator plate 4 disposed in front of the case body 3, a flexible member 5 positioned in front of the indicator plate 4, and a holder 6 fixed to the flexible member 5. A pointer 7 fixed to the flexible member 5 via the holder 6, a drive unit 8 for moving the pointer 7 by moving the flexible member 5 in the longitudinal direction, and a guide body for moving and guiding the flexible member 5. 9 and a covering panel 10 covering a required area including the front side of the guide body 9.

回路基板１は、例えば硬質の回路基板からなり、表示装置４や駆動装置６を作動させる図示しない駆動制御回路が搭載されている。 The circuit board 1 is made of, for example, a hard circuit board, and is mounted with a drive control circuit (not shown) that operates the display device 4 and the drive device 6.

表示装置２は、例えばＴＦＴ（薄膜トランジスタ）型の液晶表示素子または有機電界発光素子からなる表示パネルを枠体内に組み込んでなり、表示パネルの表示面が観察者に臨むように、回路基板９上に配置されている。なお表示装置２の表示情報は任意であるが、一例として例えば走行距離情報、ナビゲーション情報、シフトポジション情報、外気温情報の他、各種映像情報が挙げられる。 The display device 2 incorporates a display panel made of, for example, a TFT (thin film transistor) type liquid crystal display element or an organic electroluminescence element in a frame, and is placed on the circuit board 9 so that the display surface of the display panel faces an observer. Has been placed. The display information on the display device 2 is arbitrary, but as an example, there are various video information in addition to travel distance information, navigation information, shift position information, and outside air temperature information.

ケース体３は、合成樹脂からなり、表示装置２の周囲を覆う箇所で指標板４を背後から支持している。 The case body 3 is made of a synthetic resin, and supports the indicator plate 4 from behind at a portion that covers the periphery of the display device 2.

指標板４は、例えば円形の貫通孔（貫通部）からなる透視部４１と、この透視部４１の周囲を取り巻くように指針７の移動経路に沿って円弧状に配列された文字や目盛等の指標部４２とを備えている。これら指標部４２は、概略円環形状を有する透光性合成樹脂板からなる基材上にスクリーン印刷等の手段により形成されている。なお透視部４は貫通部ではなく、透明部であってもよい。 The indicator plate 4 includes, for example, a see-through portion 41 formed of a circular through hole (penetration portion), and letters and scales arranged in an arc along the movement path of the pointer 7 so as to surround the see-through portion 41. And an indicator unit 42. These indicator portions 42 are formed by means such as screen printing on a base material made of a translucent synthetic resin plate having a substantially annular shape. The see-through part 4 may be a transparent part instead of the penetrating part.

柔軟部材５は、例えばガラス繊維を織り込んだ布材を心材（インナー）とし、その周囲にゴム系材料からなるアウターを型成形することにより複数の凹凸でなる歯列５１を施した無端状のギヤードベルト（帯状体）からなり、それ自体、柔軟性は有するが、伸縮性は持たないようになっている。 The flexible member 5 is an endless geared in which, for example, a cloth material in which glass fibers are woven is used as a core material (inner), and an outer made of a rubber-based material is molded around it to form a plurality of dentitions 51 having a plurality of irregularities. It consists of a belt (band-like body), which itself has flexibility but does not have elasticity.

この柔軟部材５は、その一部が透視部４１の周囲を指標部４２に沿って延びるように引き回されると共に、他の一部は駆動装置８に連動する駆動歯車（後述する）及び複数個のテンションローラＲに架設されている。 The flexible member 5 is routed so that a part thereof extends around the fluoroscopic part 41 along the indicator part 42, and another part of the flexible member 5 includes a driving gear (described later) and a plurality of driving gears interlocked with the driving device 8. A tension roller R is installed.

ホルダー６は、一対の対向壁６１，６２と底壁６３を有する断面略「コ」字状の合成樹脂部材からなり、図４，図５に詳しく示すように、各対向壁６１，６２間で柔軟部材５を挟むように柔軟部材５に固定されている。一方の対向壁６１の先端側には、柔軟部材５を抜け止めするフック部６４が形成され、他方の対向壁６２の柔軟部材５側には、歯列５１（凹部）に嵌入される一対の位置決め部６５が形成されている。また対向壁６２の柔軟部材５とは反対側には、ガイド体９の後述するガイド壁部に当接し、指針７を指標部４２の中心に向けるための一対の突起部６６が形成され、これら突起部６６どうしの中間位置に指針７が固定されている。 The holder 6 is made of a synthetic resin member having a substantially U-shaped cross section having a pair of opposing walls 61, 62 and a bottom wall 63, and as shown in detail in FIGS. 4 and 5, between the opposing walls 61, 62. It is fixed to the flexible member 5 so as to sandwich the flexible member 5. A hook portion 64 that prevents the flexible member 5 from coming off is formed on the distal end side of one opposing wall 61, and a pair of teeth that are fitted into the tooth row 51 (concave portion) are formed on the flexible member 5 side of the other opposing wall 62. A positioning portion 65 is formed. Further, on the opposite side of the opposing wall 62 from the flexible member 5, a pair of protrusions 66 are formed to contact a guide wall portion described later of the guide body 9 and direct the pointer 7 toward the center of the indicator portion 42. The pointer 7 is fixed at an intermediate position between the protrusions 66.

指針７は、合成樹脂からなり、ホルダー６の対向壁６２に溶着等の手段で固定され、指標板４上を透視部４１側に向けて延びている。 The pointer 7 is made of synthetic resin, is fixed to the opposing wall 62 of the holder 6 by means such as welding, and extends on the indicator plate 4 toward the see-through portion 41 side.

駆動装置８は、例えばステッピングモータからなり、これの駆動軸８１には、柔軟部材５の歯列５１と連結された駆動歯車Ｇが装着されており、駆動軸８１の回転により駆動歯車Ｇを回転させ、これと連結された柔軟部材５をその長手方向に移動させることにより指針７を指標部４２に沿って移動させるように構成されている。 The drive device 8 is composed of, for example, a stepping motor, and a drive gear G connected to the tooth row 51 of the flexible member 5 is mounted on the drive shaft 81 thereof, and the drive gear G is rotated by the rotation of the drive shaft 81. The pointer 7 is moved along the indicator portion 42 by moving the flexible member 5 connected thereto in the longitudinal direction thereof.

ガイド体９は、ともに全体形状が指標部４２の配列形状に沿った円弧状であって断面形状が凹形の第１，第２のガイド部材９１，９２を組み合わせてなり、これら各ガイド部材９１，９２は、透視部４１に近い内側に位置する第１のガイド壁９３と、第１のガイド壁９３の外側に位置する第２のガイド壁９４とを有している。 The guide body 9 is formed by combining first and second guide members 91 and 92 each having an arc shape along the arrangement shape of the indicator portions 42 and having a concave cross-sectional shape. , 92 has a first guide wall 93 located on the inner side close to the see-through portion 41 and a second guide wall 94 located on the outer side of the first guide wall 93.

各ガイド壁９３，９４のうち、ガイド壁９３のガイド壁９４に対向する側の壁面は、ホルダー６の突起部６６及び柔軟部材５の歯列５１と直接接触し、指針７及び柔軟部材５を移動案内し、透視部４１の外周における指針７による指標部４２の指示を可能にしている。 Of the guide walls 93, 94, the wall surface of the guide wall 93 that faces the guide wall 94 is in direct contact with the protrusion 66 of the holder 6 and the tooth row 51 of the flexible member 5. The movement guide is provided, and the indicator portion 42 can be instructed by the pointer 7 on the outer periphery of the fluoroscopic portion 41.

ここで、柔軟部材５と第１のガイド壁９３との関係に注目すると、柔軟部材５はその歯列５１が第１のガイド壁９３側を向くように配置されており、歯列５１の頂部がガイド壁９３に点接触するように構成されている。 Here, paying attention to the relationship between the flexible member 5 and the first guide wall 93, the flexible member 5 is arranged so that the tooth row 51 faces the first guide wall 93 side, and the top of the tooth row 51 Is configured to make point contact with the guide wall 93.

被覆パネル１０は、透視部４１、指標部４２、指針７のそれぞれを露出し、それ以外の領域を遮蔽するよう配置されている。 The cover panel 10 is disposed so as to expose each of the see-through part 41, the indicator part 42, and the pointer 7 and shield the other areas.

以上のように本実施形態によれば、表示面に所定情報を表示する表示装置２と、この表示装置２の前方に配置され表示面を透視可能とする透視部４１とこの透視部４１の周囲に配列された指標部４２とを有する指標板４と、透視部４１の周囲を指標部４２に沿って延びる柔軟部材５と、この柔軟部材５に固定される指針７と、柔軟部材５をその長手方向に移動させることにより指針７を指標部４２に沿って移動させる駆動装置８と、指標部４２に沿って設けられ柔軟部材５を移動案内するガイド体９とを備えており、柔軟部材５にガイド体９との接触面積を減少させる歯列５１からなる突出部を設けたことにより、柔軟部材５の摩擦抵抗を低減することができ、摩擦抵抗による各種問題を解消または軽減することができる。 As described above, according to the present embodiment, the display device 2 that displays predetermined information on the display surface, the fluoroscopic portion 41 that is disposed in front of the display device 2 and that allows the display surface to be seen through, and the periphery of the fluoroscopic portion 41 The indicator plate 4 having the indicator portion 42 arranged in the direction, the flexible member 5 extending around the fluoroscopic portion 41 along the indicator portion 42, the pointer 7 fixed to the flexible member 5, and the flexible member 5 A driving device 8 that moves the pointer 7 along the index portion 42 by moving in the longitudinal direction, and a guide body 9 that is provided along the index portion 42 and moves and guides the flexible member 5 are provided. By providing the protrusion part which consists of the tooth row | line | column 51 which reduces the contact area with the guide body 9, the frictional resistance of the flexible member 5 can be reduced, and the various problems by frictional resistance can be eliminated or reduced. .

また本実施形態によれば、柔軟部材５が歯列５１を備えたギヤードベルトからなり、歯列５１の頂部によって突出部を構成したことにより、専用の突出部を形成する必要がなく、構成を簡素化することができる。 Moreover, according to this embodiment, the flexible member 5 consists of a geared belt provided with a tooth row 51, and the protrusion is formed by the top of the tooth row 51, so that it is not necessary to form a dedicated protrusion, and the configuration is It can be simplified.

なお本実施形態では、歯列５１を柔軟部材５の片側だけに形成したが、両側、すなわち第１のガイド壁９３側及び第２のガイド壁９４側に設けてもよい。 In the present embodiment, the tooth row 51 is formed only on one side of the flexible member 5, but may be provided on both sides, that is, the first guide wall 93 side and the second guide wall 94 side.

また本実施形態では、柔軟部材５として、ギヤードベルトを採用したが、通常のフラットベルトを用いる場合は、ガイド体９と部分接触する構造体を固定したり、または形成することにより、突出部を設けることもが可能である。 In the present embodiment, a geared belt is used as the flexible member 5. However, when a normal flat belt is used, the protruding portion is formed by fixing or forming a structure partly in contact with the guide body 9. It is also possible to provide it.

図６は本発明の第２の実施形態を示す概略正面図であり、本実施形態では、ガイド体９（第１のガイド壁９３）の柔軟部材５と対向する側に複数個の突出部９５を設け、この突出部９５を柔軟部材５と対向させることにより、摩擦抵抗を低減させている。なおこの場合、柔軟部材５の第１のガイド壁９３との対向側はフラットに形成されている。またホルダ６には、図示しないが、突出部９５を通過させる溝が形成されている。 FIG. 6 is a schematic front view showing a second embodiment of the present invention. In this embodiment, a plurality of protrusions 95 are provided on the side of the guide body 9 (first guide wall 93) facing the flexible member 5. By providing the protrusion 95 with the flexible member 5, the frictional resistance is reduced. In this case, the side of the flexible member 5 facing the first guide wall 93 is flat. In addition, although not shown, the holder 6 has a groove through which the protruding portion 95 passes.

なお前記各実施形態では、指針７の移動経路を指標部４２の配列形状に対応させて、略真円に沿った形状としたが、柔軟部材５を用いて指針７を移動させることにより、指針７の移動経路は、自由に設定が可能である。 In each of the above-described embodiments, the movement path of the pointer 7 is made to correspond to the arrangement shape of the indicator portions 42 and is formed along a substantially perfect circle. However, by moving the pointer 7 using the flexible member 5, The movement path 7 can be set freely.

本発明の第１の実施形態による指針式計器の正面図である。It is a front view of the pointer type meter by the 1st embodiment of the present invention. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図１中、被覆パネルとガイド体の一部を取り外した際の正面図で、柔軟部材の一部を拡大して示す図である。It is a front view at the time of removing a cover panel and a part of guide body in FIG. 1, and is a figure which expands and shows a part of flexible member. 図３中、指針付近の拡大正面図である。FIG. 4 is an enlarged front view of the vicinity of the pointer in FIG. 3. 同実施形態にて採用されるホルダと柔軟部材との結合状態を示す要部斜視図である。It is a principal part perspective view which shows the combined state of the holder and flexible member which are employ | adopted in the embodiment. 本発明の第２の実施形態を示す概略正面図である。It is a schematic front view which shows the 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１回路基板
２表示装置
３ケース体
４指標板
５柔軟部材
６ホルダー
７指針
８駆動装置
９ガイド体
１０被覆パネル
４１透視部
４２指標部
５１歯列 DESCRIPTION OF SYMBOLS 1 Circuit board 2 Display apparatus 3 Case body 4 Indicator board 5 Flexible member 6 Holder 7 Pointer 8 Drive apparatus 9 Guide body 10 Cover panel 41 See-through | perspective part 42 Indicator part 51 Tooth row

Claims

表示面に所定情報を表示する表示装置と、
この表示装置の前方に配置され前記表示面を透視可能とする透視部とこの透視部の周囲に配列された指標部とを有する指標板と、
前記透視部の周囲を前記指標部に沿って延びる柔軟部材と、
この柔軟部材に固定される指針と、
前記柔軟部材をその長手方向に移動させることにより前記指針を前記指標部に沿って移動させる駆動装置と、
前記指標部に沿って設けられ前記柔軟部材を移動案内するガイド体とを備え、
前記柔軟部材または前記ガイド体の少なくとも一方に両者の接触面積を減少させる突出部を設けたことを特徴とする指針式計器。 A display device for displaying predetermined information on a display surface;
An indicator plate having a see-through portion disposed in front of the display device and allowing the display surface to be seen through and an indicator portion arranged around the see-through portion;
A flexible member extending along the indicator portion around the fluoroscopic portion;
A pointer fixed to the flexible member;
A drive device for moving the pointer along the indicator portion by moving the flexible member in the longitudinal direction;
A guide body provided along the indicator portion for guiding the movement of the flexible member,
A pointer-type meter characterized in that at least one of the flexible member or the guide body is provided with a protrusion that reduces the contact area between the two.

前記柔軟部材が歯列を備えたギヤードベルトからなり、前記歯列の頂部によって前記突出部を構成したことを特徴とする請求項１記載の指針式計器。 The pointer-type meter according to claim 1, wherein the flexible member comprises a geared belt having a tooth row, and the protrusion is constituted by a top portion of the tooth row.