JPH11304547A - Indication meter and assembling method thereof - Google Patents
Indication meter and assembling method thereofInfo
- Publication number
- JPH11304547A JPH11304547A JP10668898A JP10668898A JPH11304547A JP H11304547 A JPH11304547 A JP H11304547A JP 10668898 A JP10668898 A JP 10668898A JP 10668898 A JP10668898 A JP 10668898A JP H11304547 A JPH11304547 A JP H11304547A
- Authority
- JP
- Japan
- Prior art keywords
- pointer shaft
- cylindrical boss
- pointer
- tip
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Details Of Measuring And Other Instruments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、交差コイル型指示
計器その他各種の指示計器及びその組み付け方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross coil type indicating instrument and various other indicating instruments and a method for assembling the same.
【０００２】[0002]
【従来の技術】従来、この種の指示計器においては、指
針１が、図６（ａ）にて示すように、駆動装置から回動
可能に延出する指針軸２に支持されている（特開平８−
８６６６９号公報参照）。具体的には、指針１は、指針
本体１ａと、この指針本体１ａの基部に組み付けたキャ
ップ１ｂとを備えている。キャップ１ｂは、その筒状ボ
ス１ｃにて、指針軸２の先端部２ａに圧入により支持さ
れるようになっている。2. Description of the Related Art Conventionally, in this type of indicating instrument, a pointer 1 is supported by a pointer shaft 2 which is rotatably extended from a driving device as shown in FIG. Kaihei 8-
No. 86669). Specifically, the pointer 1 includes a pointer main body 1a and a cap 1b attached to a base of the pointer main body 1a. The cap 1b is supported by its cylindrical boss 1c by press-fitting to the tip 2a of the pointer shaft 2.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記指示計
器では、指針軸２の先端面２ｂは、図６（ａ）及び図７
にて示すごとく、略平面状となっている。また、キャッ
プ１ｂの筒状ボス１ｃを指針軸２の先端部２ａに対し圧
入し易くするため、筒状ボス１ｃは、その内周面下部１
ｄにて、図６（ａ）にて示すごとく、断面テーパ状に形
成されている。By the way, in the above-mentioned indicating instrument, the tip end surface 2b of the pointer shaft 2 is shown in FIGS.
It has a substantially planar shape as shown by. Further, in order to facilitate press-fitting the cylindrical boss 1c of the cap 1b into the distal end portion 2a of the pointer shaft 2, the cylindrical boss 1c has a lower inner peripheral surface 1c.
At d, as shown in FIG. 6A, the cross section is formed in a tapered shape.
【０００４】ここで、指針１が所定値（例えば、零値）
を指示している状態にて、当該指針１の筒状ボス１ｃを
指針軸２の先端部２ａに圧入する場合、指針軸２の軸心
が、図６（ａ）（ｂ）にて示すごとく、筒状ボス１ｃの
軸心からずれていると、指針軸２の先端面２ｂが、その
外周縁部にて、筒状ボス１ｃの内周面下部１ｄに当た
る。[0004] Here, the pointer 1 has a predetermined value (for example, a zero value).
When the cylindrical boss 1c of the pointer 1 is press-fitted into the tip 2a of the pointer shaft 2 in a state where the instruction is given, the axis of the pointer shaft 2 is adjusted as shown in FIGS. 6 (a) and 6 (b). If it is displaced from the axis of the cylindrical boss 1c, the distal end surface 2b of the pointer shaft 2 hits the lower portion 1d of the inner peripheral surface of the cylindrical boss 1c at its outer peripheral edge.
【０００５】このとき、筒状ボス１ｃの内周面下部１ｄ
に傷や皺等の凹凸があると、指針軸２の先端面２ｂが、
その外周縁部にて、当該凹凸にあたり、指針軸２に対し
回転力を与える。ここで、指針軸２の先端面２ｂの外周
縁部は指針軸２の軸心から相当に離れているため、上記
回転力は大きい値となる。従って、針軸２が大きく回動
しながら筒状ボス１ｃと圧入される。その結果、筒状ボ
ス１ｃの指針軸２に対する圧入に伴い、指針１に指示誤
差が大きく発生するという不具合がある。At this time, the lower part 1d of the inner peripheral surface of the cylindrical boss 1c
If there are irregularities such as scratches and wrinkles, the tip end surface 2b of the pointer shaft 2
At the outer peripheral edge, a rotational force is applied to the pointer shaft 2 at the irregularities. Here, since the outer peripheral edge of the distal end surface 2b of the pointer shaft 2 is considerably apart from the axis of the pointer shaft 2, the above-mentioned torque becomes a large value. Therefore, the needle shaft 2 is pressed into the cylindrical boss 1c while largely rotating. As a result, there is a problem that a large pointing error occurs in the pointer 1 when the cylindrical boss 1c is pressed into the pointer shaft 2.
【０００６】このようなことは、キャップ１ｂの筒状ボ
ス１ｃの内周面下部１ｄを、図８にて示すごとく、大き
なテーパ形状としても、また、図８における指針軸２の
先端部を、図９にて示すごとく、円錐形状に形成して
も、同様である。そこで、本発明は、以上のようなこと
に対処するため、指針の回動基部を構成する筒状ボスと
これに対する指針軸の先端部との間の圧入形状に工夫を
凝らし、指針のボスに対する指針軸の先端部の圧入時に
おける指示誤差の発生を抑制するようにした指示計器及
びその組み付け方法を提供することを目的とする。This is because the lower portion 1d of the inner peripheral surface of the cylindrical boss 1c of the cap 1b has a large tapered shape as shown in FIG. 8, and the tip of the pointer shaft 2 in FIG. As shown in FIG. 9, the same applies to the case of forming a conical shape. Therefore, in order to cope with the above, the present invention devises a press-fitting shape between a cylindrical boss constituting a turning base of a pointer and a tip end of a pointer shaft with respect to the cylindrical boss, and adjusts the boss of the pointer against the boss. It is an object of the present invention to provide an indicator and a method for assembling the indicator, which suppresses the occurrence of an indication error at the time of press-fitting a tip portion of a pointer shaft.
【０００７】[0007]
【課題を解決するための手段】上記課題の解決にあた
り、請求項１に記載の発明によれば、指示計器は、文字
板（７０）と、この文字板の裏面側に配置されて当該文
字板を通り回動可能に延出する円柱状指針軸（５０）を
有してなる駆動装置（１０、４０）と、指針軸の先端部
（５１）と圧入により同軸的に支持される筒状ボス（８
２）を有し、指針軸の回動に伴い文字板の表面に沿い回
動する指針（８０）とを備える。In order to solve the above problems, according to the first aspect of the present invention, the indicating instrument is provided with a dial (70) and a dial disposed on the back side of the dial. (10, 40) having a cylindrical pointer (50) extending rotatably through the shaft, and a cylindrical boss coaxially supported by press-fitting with the tip (51) of the pointer. (8
2), and a pointer (80) that rotates along the surface of the dial with the rotation of the pointer shaft.
【０００８】そして、筒状ボスの内周壁軸方向中間部位
（８２ｂ）が、指針軸の先端部との圧入側に向けて、断
面末広がり状に形成されており、一方、指針軸の先端部
が円錐形状に形成されている。これにより、指針軸を指
針の筒状ボスに圧入する過程にて、指針軸の軸心が筒状
ボスの軸心からずれていても、指針軸は、その先端部の
先端にて、筒状ボスの内周壁軸方向中間部位に当たる。An axially intermediate portion (82b) of the cylindrical boss in the axial direction of the inner peripheral wall is formed so as to have a divergent cross section toward the press-fit side with the distal end portion of the pointer shaft. It is formed in a conical shape. In this way, even if the axis of the pointer shaft is displaced from the axis of the cylindrical boss in the process of pressing the pointer shaft into the cylindrical boss of the pointer, the pointer shaft can be This corresponds to the axially intermediate portion of the inner peripheral wall of the boss.
【０００９】従って、筒状ボスの指針軸に対する圧入に
より当該指針軸に回転力が作用しても、この回転力は、
従来の場合よりも、著しく小さくなる。その結果、筒状
ボスを指針軸に圧入するときに生じがちな指針の指示誤
差の発発生を最小限に抑制し得る。また、請求項２に記
載の発明によれば、請求項１に記載の指示計器におい
て、指針軸の先端部の頂角は、鋭角であって、筒状ボス
の内周壁軸方向中間部位がその軸心となす角度の２倍よ
りも小さい。Therefore, even if a rotational force acts on the pointer shaft by press-fitting the cylindrical boss into the pointer shaft, this rotational force is
It is significantly smaller than in the conventional case. As a result, it is possible to minimize the occurrence of a pointer pointing error that tends to occur when the cylindrical boss is pressed into the pointer shaft. According to the second aspect of the present invention, in the indicating instrument according to the first aspect, the apex angle of the distal end portion of the pointer shaft is an acute angle, and the intermediate portion of the cylindrical boss in the axial direction of the inner peripheral wall is the same. It is smaller than twice the angle formed by the axis.
【００１０】これにより、請求項１に記載の発明の作用
効果をより一層精度よく確保できる。また、請求項３に
記載の発明によれば、請求項１に記載の指示計器におい
て、筒状ボスの指針軸との圧入過程においてこれら筒状
ボス及び指針軸の各軸心が相互にずれているとき、指針
軸の先端部が、その先端（５１ａ）にて、筒状ボスの内
周壁軸方向中間部位にて当たるように、指針軸の先端部
の頂角が設定されている．これによっても、請求項１に
記載の発明の作用効果をより一層精度よく確保できる。[0010] Thus, the operation and effect of the first aspect of the present invention can be more accurately ensured. According to the third aspect of the present invention, in the indicating instrument according to the first aspect, in the process of press-fitting the cylindrical boss with the pointer shaft, the axes of the cylindrical boss and the pointer shaft are shifted from each other. The apex angle of the distal end of the pointer shaft is set such that the distal end of the pointer shaft hits the distal end (51a) at the axially intermediate portion of the inner peripheral wall of the cylindrical boss. With this, the operation and effect of the invention described in claim 1 can be more accurately secured.
【００１１】また、請求項４に記載の発明のように、請
求項２又は３に記載の指示計器において、指針軸の先端
部の頂角を３０度以下とすれば、請求項２又は３に記載
の発明の作用効果をより一層向上できる。また、このよ
うな作用効果は、指針軸の先端部の先端は適宜な曲率半
径を有しておれば、より一層良好になる。また、請求項
５に記載の発明によれば、文字板（７０）の裏面側に当
該文字板を通り回動可能に延出する円柱状指針軸（５
０）を有してなる駆動装置（１０、４０）を組み付け、
指針軸の回動に伴い文字板の表面に沿い回動するよう
に、指針（８０）をその筒状ボス（８２）にて指針軸の
先端部（５１）に圧入により同軸的に組み付けるように
した指示計器の組み付け方法において、指針の筒状ボス
の指針軸の先端部に対する圧入過程においてこれら筒状
ボス及び指針軸の各軸心が相互にずれているとき、指針
軸が、その先端部のうち軸心に近い部分にて筒状ボスの
内周壁軸方向中間部位（８２ｂ）に当たるように、当該
筒状ボスの内周壁軸方向中間部位が、指針軸の先端部と
の圧入側に向けて、断面末広がり状に形成されており、
一方、指針軸の先端部が円錐形状に形成されている。[0011] In the indicating instrument according to the second or third aspect of the present invention, if the apex angle of the tip of the pointer shaft is set to 30 degrees or less, the second or third aspect of the invention may be modified. The operation and effect of the described invention can be further improved. Further, such an operation and effect can be further improved if the tip of the tip portion of the pointer shaft has an appropriate radius of curvature. According to the fifth aspect of the present invention, the cylindrical pointer shaft (5) is provided on the back side of the dial (70) so as to be rotatable through the dial.
0) is assembled with the driving device (10, 40) having
The pointer (80) is coaxially assembled to the tip (51) of the pointer shaft by its cylindrical boss (82) so as to rotate along the surface of the dial with the rotation of the pointer shaft. In the assembling method of the indicating instrument described above, in the process of press-fitting the cylindrical boss of the pointer into the distal end of the pointer shaft, when the axes of the cylindrical boss and the pointer shaft are displaced from each other, the pointer shaft is positioned at the distal end. The central portion of the cylindrical boss in the axial direction of the inner peripheral wall is directed toward the press-fit side of the tip end of the pointer shaft so that the portion near the axis of the cylindrical boss contacts the axially intermediate portion (82b) of the cylindrical boss. , Is formed in the shape of the end of the cross section,
On the other hand, the tip of the pointer shaft is formed in a conical shape.
【００１２】これにより、指針軸を指針の筒状ボスに圧
入する過程にて、指針軸の軸心が筒状ボスの軸心からず
れていても、指針軸は、その先端部の先端にて、筒状ボ
スの内周壁軸方向中間部位に当たる。従って、請求項１
に記載の発明の作用効果を達成し得る指示計器の組み付
け方法の提供が可能となる。In this way, even if the axis of the pointer shaft is displaced from the axis of the cylindrical boss in the process of press-fitting the pointer shaft into the cylindrical boss of the pointer, the pointer shaft is kept at the distal end of its distal end. , In the axially intermediate portion of the inner peripheral wall of the cylindrical boss. Therefore, claim 1
It is possible to provide a method of assembling the indicating instrument that can achieve the operation and effect of the invention described in (1).
【００１３】また、請求項６に記載の発明にように、請
求項５に記載の指示計器の組み付け方法において、指針
軸の先端部の頂角は、鋭角であって、筒状ボスの内周壁
軸方向中間部位がその軸心となす角度の２倍よりも小さ
ければ、請求項５に記載の発明の作用効果をより一層向
上できる。また、請求項７に記載の発明のように、請求
項５又は６に記載の指示計器の組み付け方法において、
指針軸の先端部の頂角は、３０度以下であれば、請求項
５又は６に記載の発明の作用効果をより一層向上でき
る。According to a sixth aspect of the present invention, in the method for assembling an indicating instrument according to the fifth aspect, the apex angle of the tip of the pointer shaft is an acute angle, and the inner peripheral wall of the cylindrical boss is formed. If the axially intermediate portion is smaller than twice the angle formed by the axial center, the function and effect of the invention according to claim 5 can be further improved. Further, as in the invention according to claim 7, in the method for assembling the indicating instrument according to claim 5 or 6,
If the apex angle of the tip of the pointer shaft is 30 degrees or less, the function and effect of the invention according to claim 5 or 6 can be further improved.
【００１４】[0014]
【発明の実施の形態】以下、本発明の一実施形態を図面
に基づいて説明する。図１及び図２は本発明が車両用交
差コイル型指示計器に適用された例を示している。この
交差コイル型指示計器は、ハウジングとしての樹脂製ボ
ビン１０を備えており、このボビン１０は、その下側部
にて、断面Ｕ字状のケーシング２０に保持され、このケ
ーシング２０と共に回路基板３０に固定されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an example in which the present invention is applied to a cross coil type indicating instrument for a vehicle. This cross-coil type indicating instrument includes a resin bobbin 10 as a housing, and the bobbin 10 is held at its lower side in a casing 20 having a U-shaped cross section. It is fixed to.
【００１５】また、ボビン１０の大径中空部の外壁に
は、両交差コイル４０が巻装されており、ボビン１０内
には、金属材料からなる円柱状指針軸５０が同軸的にか
つ回動可能に支持されている。ここで、指針軸５０は、
導光板６０の貫通穴部６１を通り上方へ延出している。
なお、文字板７０は、導光板６０の表面に装着されてい
る。A double cross coil 40 is wound around the outer wall of the large-diameter hollow portion of the bobbin 10, and a cylindrical pointer shaft 50 made of a metal material is coaxially and rotatably mounted inside the bobbin 10. Supported as possible. Here, the pointer shaft 50 is
The light guide plate 60 extends upward through the through hole 61.
The dial 70 is mounted on the surface of the light guide plate 60.
【００１６】発光指針８０は、樹脂製指針本体８０ａ
と、樹脂製キャップ８０ｂとにより構成されている。指
針本体８０ａは、その基部８１にて、キャップ８０ｂの
筒状ボス８２に挿通支持されており、この筒状ボス８２
は、指針軸５０先端部５１に圧入により同軸的に支持さ
れている（図２及び図３参照）。本実施形態では、キャ
ップ８０ｂの筒状ボス８２を指針軸５０に圧入し易いよ
うに、指針軸５０の先端部５１は、図３及び図４にて示
すごとく、円錐形状に形成され、一方、筒状ボス８２の
内周壁のうち、下部８２ａ（以下、内周壁下部８２ａと
いう）は、当該内周壁の上部の径よりも大きく、かつ、
内周壁下部８２ａの直上軸方向中間部位８２ｂ（以下、
内周壁軸方向中間部位８２ｂという）は、図３にて図示
上方から下方に向けて末広がり状にかつ断面テーパ状に
形成されている。The light emitting pointer 80 is a resin pointer main body 80a.
And a resin cap 80b. The pointer main body 80a is inserted and supported at its base 81 by a cylindrical boss 82 of a cap 80b.
Are coaxially supported by press-fitting on the tip end portion 51 of the pointer shaft 50 (see FIGS. 2 and 3). In the present embodiment, the distal end portion 51 of the pointer shaft 50 is formed in a conical shape as shown in FIGS. 3 and 4 so that the cylindrical boss 82 of the cap 80b is easily pressed into the pointer shaft 50. A lower portion 82a (hereinafter, referred to as an inner wall lower portion 82a) of the inner peripheral wall of the cylindrical boss 82 is larger than a diameter of an upper portion of the inner peripheral wall, and
The axially intermediate portion 82b immediately above the inner peripheral wall lower portion 82a (hereinafter, referred to as the
The inner peripheral wall axial direction intermediate portion 82b) is formed so as to be divergent and tapered in cross section from the upper side to the lower side in FIG.
【００１７】ここで、指針軸５０の先端部５１の先端５
１ａの曲率半径Ｒは、約０．１５ｍｍであり、また、指
針軸５０の先端５１ａの頂角θ（図４参照）は３０度で
ある。このように構成した本実施形態において、キャッ
プ８０ｂの筒状ボス８２を指針軸５０に圧入する過程に
て、指針軸５０の軸心が、図５（ａ）（ｂ）にて示すご
とく、キャップ８０ｂの筒状ボス８２の軸心から径方向
へ位置ずれしていても、指針軸５０の先端５１ａの頂角
θが３０度となっている。Here, the tip 5 of the tip 51 of the pointer shaft 50
The radius of curvature R of 1a is about 0.15 mm, and the apex angle θ of the tip 51a of the pointer shaft 50 (see FIG. 4) is 30 degrees. In the present embodiment configured as described above, in the process of press-fitting the cylindrical boss 82 of the cap 80b into the pointer shaft 50, the axis of the pointer shaft 50 is adjusted as shown in FIGS. The vertex angle θ of the distal end 51a of the pointer shaft 50 is 30 degrees even if the position is shifted in the radial direction from the axis of the cylindrical boss 82b of 80b.
【００１８】このため、指針軸５０は、その先端５１ａ
にて、図５（ｂ）にて示すごとく、キャップ８０ｂの筒
状ボス８２の内周壁軸方向中間部位８２ｂに当たる。こ
の場合、指針軸５０は、従来の場合よりもその軸心に近
い位置にて、筒状ボス８２の内周壁軸方向中間部位８２
ｂに当たる。従って、例えば、筒状ボス８２の内周壁軸
方向中間部位８２ｂに傷や皺等の凹凸が形成されている
ために、筒状ボス８２の指針軸５０に対する圧入過程に
おいて、当該指針軸５０に上記凹凸に起因して回転力が
作用しても、この回転力は、従来の場合よりも、著しく
小さくなる。For this reason, the pointer shaft 50 has its tip 51a.
As shown in FIG. 5 (b), the cylindrical boss 82 of the cap 80b hits the axially intermediate portion 82b of the inner peripheral wall. In this case, the pointer shaft 50 is located at a position closer to the axial center than in the conventional case, and the axially intermediate portion 82 of the inner peripheral wall of the cylindrical boss 82.
hit b. Therefore, for example, since irregularities such as scratches and wrinkles are formed in the axially intermediate portion 82b of the inner peripheral wall of the cylindrical boss 82, during the process of press-fitting the cylindrical boss 82 into the pointer shaft 50, Even if a rotational force acts due to the unevenness, the rotational force is significantly smaller than in the conventional case.
【００１９】その結果、キャップ８０ｂの筒状ボス８２
を指針軸５０に圧入するときに生じがちな指針８０の指
示誤差が最小限に抑制され得る。なお、本発明の実施に
あたり、上記実施形態において、指針軸５０の先端５１
ａの頂角θは３０度とした例について説明したが、これ
に限らず、一般的には、指針軸５０をキャップ８０ｂの
筒状ボス８２に圧入する過程において、指針軸５０の軸
心と筒状ボス８２の軸心との間の位置ずれがどのように
なっていても、指針軸５０が、その先端５１ａにて、筒
状ボス８２の内周壁軸方向中間部位８２ｂに当たるよう
に、指針軸５０の先端５１ａの頂角θを、鋭角の範囲に
て、筒状ボス８２の内周壁軸方向中間部位８２ｂのその
軸心との角度α（図３参照）の２倍よりも小さくすれば
よい。具体的には、指針軸５０及び筒状ボス８２の仕様
を考慮して、θ＝３０度以下であればよい。As a result, the cylindrical boss 82 of the cap 80b
The pointing error of the pointer 80, which tends to occur when press-fitting the pointer shaft 50 into the pointer shaft 50, can be suppressed to a minimum. In implementing the present invention, in the above embodiment, the tip 51 of the pointer shaft 50 is used.
The example in which the apex angle θ of a is set to 30 degrees has been described. However, the present invention is not limited to this. Regardless of the positional displacement between the cylindrical boss 82 and the axial center, the pointer shaft 50 is set so that the distal end 51a of the pointer shaft 50 hits the axially intermediate portion 82b of the cylindrical boss 82 in the inner peripheral wall direction. If the apex angle θ of the tip 51a of the shaft 50 is smaller than twice the angle α (see FIG. 3) of the axially intermediate portion 82b of the inner peripheral wall of the cylindrical boss 82 with the axis within an acute angle range. Good. Specifically, the angle θ may be equal to or less than 30 degrees in consideration of the specifications of the pointer shaft 50 and the cylindrical boss 82.
【００２０】このようにすれば、キャップ８０ｂの筒状
ボス８２を指針軸５０に圧入する過程において、指針軸
５０の軸心が筒状ボス８２の軸心から径方向へ位置ずれ
していても、指針軸５０のうちその先端５１ａが、筒状
ボス８２の内周壁中間部位８２ｂに当たる。このため、
指針軸５０の先端５１ａと筒状ボス８２の内周壁軸方向
中間部位８２ｂとの径方向位置ずれ量が、従来の場合よ
りも、小さくなる。つまり、指針軸５０は、従来の場合
よりもその軸心に近い位置にて、筒状ボス８２の内周壁
軸方向中間部位８２ｂに当たる。In this way, in the process of press-fitting the cylindrical boss 82 of the cap 80b into the pointer shaft 50, even if the axis of the pointer shaft 50 is displaced in the radial direction from the axis of the cylindrical boss 82. The tip 51a of the pointer shaft 50 contacts the inner peripheral wall intermediate portion 82b of the cylindrical boss 82. For this reason,
The radial displacement between the tip 51a of the pointer shaft 50 and the axially intermediate portion 82b of the inner peripheral wall of the cylindrical boss 82 is smaller than in the conventional case. That is, the pointer shaft 50 contacts the axially intermediate portion 82b of the cylindrical boss 82 in the inner peripheral wall at a position closer to the axis than in the conventional case.
【００２１】従って、筒状ボス８２の指針軸５０に対す
る圧入により当該指針軸５０に回転力が作用しても、こ
の回転力は、従来の場合よりも、著しく小さくなる。よ
って、上記実施形態と同様の作用効果を達成できる。ま
た、本発明の実施にあたり、指針軸５０の先端５１ａの
曲率半径Ｒは、０．１５ｍｍに限ることなく、適宜変更
してもよい。Therefore, even if a rotational force acts on the pointer shaft 50 by press-fitting the cylindrical boss 82 into the pointer shaft 50, this rotational force is significantly smaller than in the conventional case. Therefore, the same operation and effect as the above embodiment can be achieved. In implementing the present invention, the radius of curvature R of the tip 51a of the pointer shaft 50 is not limited to 0.15 mm, and may be changed as appropriate.
【００２２】また、本発明の実施にあたり、指針軸５０
は、金属に限ることなく、樹脂で形成されていてもよ
い。また、本発明の実施にあたっては、交差コイル型指
示計器に限ることなく、可動コイル型指示計器、可動鉄
心型指示計器や、ステップモータを駆動源とする指示計
器のように、指針軸を有する指示計器に本発明を適用し
て実施しても、上記実施形態と同様の作用効果を達成で
きる。また、指示計器は車両用に限ることもなく、各種
の産業で利用される指示計器に本発明を適用して実施し
てもよい。In implementing the present invention, the pointer shaft 50
Is not limited to metal and may be formed of resin. Further, in the practice of the present invention, not only a cross-coil type indicator but also a movable coil type indicator, a movable iron type indicator, and an indicator having a pointer shaft, such as an indicator using a stepping motor as a driving source. Even when the present invention is applied to an instrument, the same operation and effect as the above embodiment can be achieved. The indicating instrument is not limited to a vehicle, and the present invention may be applied to an indicating instrument used in various industries.
【００２３】また、本発明の実施にあたっては、発光指
針を備えた指示計器に限ることなく、発光しない指針を
備えた指示計器に本発明を適用して実施してもよい。In practicing the present invention, the present invention is not limited to an indicator having a light emitting pointer, but may be applied to an indicator having a pointer that does not emit light.
【図１】本発明に係る指示計器の一実施形態を示す正面
図である。FIG. 1 is a front view showing an embodiment of an indicating instrument according to the present invention.
【図２】図１にて２−２線に沿う断面図である。FIG. 2 is a sectional view taken along line 2-2 in FIG.
【図３】図２の指示計器の要部拡大断面図である。FIG. 3 is an enlarged sectional view of a main part of the indicating instrument of FIG. 2;
【図４】図３の指針軸の部分拡大図である。FIG. 4 is a partially enlarged view of a pointer shaft in FIG. 3;
【図５】（ａ）はキャップの筒状ボスを指針軸の先端部
に圧入する状態を示す断面図であり、（ｂ）は図５
（ａ）の断面の部分拡大図である。5A is a cross-sectional view showing a state in which a cylindrical boss of a cap is press-fitted into a distal end portion of a pointer shaft, and FIG.
It is the elements on larger scale of the cross section of (a).
【図６】（ａ）は、従来の指示計器における指針軸にキ
ャップの筒状ボスを圧入する状態を示す断面図であり、
（ｂ）は、図６（ｂ）の断面の部分拡大図である。FIG. 6A is a cross-sectional view showing a state in which a cylindrical boss of a cap is pressed into a pointer shaft of a conventional indicating instrument,
FIG. 6B is a partially enlarged view of the cross section of FIG.
【図７】図６の指針軸の部分拡大図である。FIG. 7 is a partially enlarged view of the pointer shaft of FIG. 6;
【図８】従来の他の指示計器における指針軸にキャップ
の筒状ボスを圧入する状態を示す断面図である。FIG. 8 is a cross-sectional view showing a state in which a cylindrical boss of a cap is pressed into a pointer shaft of another conventional indicating instrument.
【図９】従来の他の指示計器における指針軸にキャップ
の筒状ボスを圧入する状態を示す断面図である。FIG. 9 is a cross-sectional view showing a state in which a cylindrical boss of a cap is pressed into a pointer shaft of another conventional indicating instrument.
１０…ボビン、４０…交差コイル、５０…指針軸、５１
…先端部、５１ａ…先端、７０…文字板、８０…指針、
８２…筒状ボス、８２ｂ…内周壁軸方向中間部位。10: bobbin, 40: cross coil, 50: pointer shaft, 51
... Tip, 51a ... Tip, 70 ... Dial, 80 ... Pointer,
82: cylindrical boss, 82b: axially intermediate portion of the inner peripheral wall.
Claims (7)
可能に延出する円柱状指針軸（５０）を有してなる駆動
装置（１０、４０）と、 前記指針軸の先端部（５１）と圧入により同軸的に支持
される筒状ボス（８２）を有し、前記指針軸の回動に伴
い前記文字板の表面に沿い回動する指針（８０）とを備
える指示計器において、 前記筒状ボスの内周壁軸方向中間部位（８２ｂ）が、前
記指針軸の先端部との圧入側に向けて、断面末広がり状
に形成されており、 一方、前記指針軸の先端部が円錐形状に形成されている
ことを特徴とする指示計器。A drive device (10) comprising a dial (70) and a cylindrical pointer shaft (50) disposed on the back side of the dial and extending rotatably through the dial. , 40), and a cylindrical boss (82) coaxially supported by press-fitting with the distal end portion (51) of the pointer shaft, and rotates along the surface of the dial with the rotation of the pointer shaft. The indicator (80) includes an indicator (80), and an intermediate portion (82b) in the axial direction of the inner peripheral wall of the cylindrical boss is formed so as to have a flared cross section toward a press-fit side of the tip of the indicator shaft. On the other hand, an indicating instrument characterized in that the tip of the pointer shaft is formed in a conical shape.
って、前記筒状ボスの内周壁軸方向中間部位がその軸心
となす角度の２倍よりも小さいことを特徴とする請求項
１に記載の指示計器。2. An apex angle of a tip end portion of the pointer shaft is an acute angle, and is smaller than twice an angle formed by an intermediate portion of the cylindrical boss in an axial direction of an inner peripheral wall with an axis thereof. The indicating instrument according to claim 1.
においてこれら筒状ボス及び指針軸の各軸心が相互にず
れているとき、前記指針軸の先端部が、その先端（５１
ａ）にて、前記筒状ボスの内周壁軸方向中間部位にて当
たるように、前記指針軸の先端部の頂角が設定されてい
ることを特徴とする請求項１に記載の指示計器。3. In the process of press-fitting the cylindrical boss with the pointer shaft, when the axes of the cylindrical boss and the pointer shaft are shifted from each other, the distal end of the pointer shaft is moved to the distal end (51).
2. The indicating instrument according to claim 1, wherein in a), a vertex angle of a tip end portion of the pointer shaft is set so as to hit at an intermediate portion in an axial direction of an inner peripheral wall of the cylindrical boss. 3.
下であることを特徴とする請求項２又は３に記載の指示
計器。4. The indicating instrument according to claim 2, wherein an apex angle of a tip portion of the pointer shaft is 30 degrees or less.
通り回動可能に延出する円柱状指針軸（５０）を有して
なる駆動装置（１０、４０）を組み付け、 前記指針軸の回動に伴い前記文字板の表面に沿い回動す
るように、指針（８０）をその筒状ボス（８２）にて前
記指針軸の先端部（５１）に圧入により同軸的に組み付
けるようにした指示計器の組み付け方法において、 前記指針の筒状ボスの前記指針軸の先端部に対する圧入
過程においてこれら筒状ボス及び指針軸の各軸心が相互
にずれているとき、前記指針軸が、その先端部のうち軸
心に近い部分にて前記筒状ボスの内周壁軸方向中間部位
（８２ｂ）に当たるように、当該筒状ボスの内周壁軸方
向中間部位が、前記指針軸の先端部との圧入側に向け
て、断面末広がり状に形成されており、一方、前記指針
軸の先端部が円錐形状に形成されていることを特徴とす
る指示計器の組み付け方法。5. A driving device (10, 40) having a cylindrical pointer shaft (50) rotatably extending through the dial plate on the back side of the dial plate (70), The pointer (80) is coaxially assembled to the tip (51) of the pointer shaft by its cylindrical boss (82) so as to rotate along the surface of the dial with the rotation of the shaft. In the assembling method of the indicating instrument, when the cylindrical boss of the pointer is displaced from each other in the axial center of the cylindrical boss and the pointer shaft in the process of press-fitting the tip of the pointer shaft, the pointer shaft is The central portion of the cylindrical boss in the axial direction of the inner peripheral wall of the cylindrical boss is located between the distal end of the pointer shaft and the central portion of the cylindrical boss in the axial direction. Is formed so that the cross-section is widened toward the press-fit side of On the other hand, a method of assembling the indicating instrument tip of the pointer shaft is characterized in that it is formed in a conical shape.
って、前記筒状ボスの内周壁軸方向中間部位がその軸心
となす角度の２倍よりも小さいことを特徴とする請求項
５に記載の指示計器の組み付け方法。6. An apex angle of a tip end portion of the pointer shaft is an acute angle, and is smaller than twice an angle formed by an intermediate portion of the cylindrical boss in an axial direction of an inner peripheral wall with an axis thereof. A method for assembling the indicating instrument according to claim 5.
下であることを特徴とする請求項５又は６に記載の指示
計器の組み付け方法。7. The method for assembling an indicating instrument according to claim 5, wherein an apex angle of a tip portion of the pointer shaft is 30 degrees or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10668898A JPH11304547A (en) | 1998-04-16 | 1998-04-16 | Indication meter and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10668898A JPH11304547A (en) | 1998-04-16 | 1998-04-16 | Indication meter and assembling method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11304547A true JPH11304547A (en) | 1999-11-05 |
Family
ID=14440000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10668898A Pending JPH11304547A (en) | 1998-04-16 | 1998-04-16 | Indication meter and assembling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11304547A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019065014A1 (en) * | 2017-09-28 | 2019-04-04 | 株式会社デンソー | Indicator gauge for vehicle |
| CN113086239A (en) * | 2021-04-15 | 2021-07-09 | 四川亚美动力技术有限公司 | Method for assembling pointer assembly of aviation instrument |
-
1998
- 1998-04-16 JP JP10668898A patent/JPH11304547A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019065014A1 (en) * | 2017-09-28 | 2019-04-04 | 株式会社デンソー | Indicator gauge for vehicle |
| JP2019066197A (en) * | 2017-09-28 | 2019-04-25 | 株式会社デンソー | Vehicular pointer instrument |
| US11639104B2 (en) | 2017-09-28 | 2023-05-02 | Denso Corporation | Indicator instrument for vehicle |
| CN113086239A (en) * | 2021-04-15 | 2021-07-09 | 四川亚美动力技术有限公司 | Method for assembling pointer assembly of aviation instrument |
| CN113086239B (en) * | 2021-04-15 | 2022-09-20 | 四川亚美动力技术有限公司 | Machining and assembling method for pointer assembly of aviation instrument |
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