JPH05174934A - Inverted l-shaped slide contact - Google Patents

Abstract

PURPOSE:To sweep away abrasion scraps produced by sliding contact or dust or burr taken in from the surroundings by inclining a linear slide contact surface at 5 deg. to 25 deg. perpendicularly to the longitudinal direction. CONSTITUTION:A linear slide contact portion is inclined at 5 deg. to 25 deg. perpendicularly to in the contact longitudinal direction of an inverted L-shaped slide contact 1 having a contact portion constituted of a tape or plate member. An effect cannot be expected much in the case of less than 5 deg. while the whole length of the contact becomes longer in the case of more than 25 deg. with difficulty in handling. Accordingly, abrasion scraps, dust or dirt is difficult to be piled up or easy to be swept away. The contact can be easily assembled in an opposite substrate in the longitudinal direction with high assembling accuracy in assembling work. Furthermore, if a contact having slits and a plurality of contact surfaces is such constituted that the slits are made in different length, each natural oscillation can be made different, thereby preventing resonance. Consequently, it is possible to obtain a long lifetime in a stable contact state.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、エンコーダ、トリマ
ー、ポテンショメータ、センサー等に用いる摺動接点の
形状に係り、特に逆Ｌ字状の摺動接点の改良に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the shape of sliding contacts used in encoders, trimmers, potentiometers, sensors and the like, and more particularly to improvement of inverted L-shaped sliding contacts.

【０００２】[0002]

【従来技術と課題】従来、図６、図７に示す如く先端部
が逆Ｌ字状のいわゆるスクラッチブラシと称される摺動
接点１′が用いられていた。この摺動接点は先端部を摺
動面に対し垂直に摺動させる為、接触面積が常に一定で
あるという優れた特性を有するものである。しかし、略
直角状の接触となることから、湾曲状の接触部を有する
摺動接点に比べ摺動接触時、摩耗粉及び周囲環境から巻
き込んだチリ、ゴミ等を集め易く、また排除しにくく従
って使用中に接触不安定となり易くその点の改善が要望
されていた。2. Description of the Related Art Conventionally, as shown in FIGS. 6 and 7, a sliding contact 1'having a so-called scratch brush having an inverted L-shaped tip has been used. This sliding contact has the excellent characteristic that the contact area is always constant because the tip portion slides vertically to the sliding surface. However, since the contact is substantially right-angled, it is easier to collect dust, dust, and the like caught from wear powder and the surrounding environment during sliding contact, and it is difficult to remove it, as compared with a sliding contact having a curved contact portion. Contact instability tends to occur during use, and improvements in this respect have been demanded.

【０００３】[0003]

【発明の目的】本発明は、上記課題を解決すべくなされ
たもので、摺動接触時、発生する摩耗粉や周囲環境から
巻き込んだチリ、ゴミを排除できる逆Ｌ字状摺動接点を
提供するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides an inverted L-shaped sliding contact capable of eliminating abrasion powder generated during sliding contact, dust entrapped from the surrounding environment, and dust. To do.

【０００４】[0004]

【発明の構成】上記課題を解決する為の本発明の技術的
手段はテープ材または板材からなる接触部を有する逆Ｌ
字状摺動接点において、摺動接点長手方向と直角の方向
に対して５〜25度の角度で直線状の摺動接触面を有した
ことを特徴とするものである。The technical means of the present invention for solving the above-mentioned problems is an inverted L having a contact portion made of a tape material or a plate material.
The character-shaped sliding contact is characterized by having a linear sliding contact surface at an angle of 5 to 25 degrees with respect to a direction perpendicular to the longitudinal direction of the sliding contact.

【０００５】[0005]

【作用】上記のように構成された本発明の摺動接点によ
れば、対向基板と摺動接触動作方向において、摺動接触
面が角度を有しているので、斜めに摺動接触することと
なり摩耗粉、チリ、ゴミが集積し難く、また排除し易く
なるものである。ここで角度は５〜25度が好ましく、５
度未満だと効果が少なく25度を越えると摺動接点の全長
が長くなり扱いにくくなるものである。なお、摺動接触
機構として、回転運動、直線運動さらには、一方向運
動、往復運動等があるがいずれにおいても有効である。
また、摺動接点長手方向に対して斜めの角度を有してい
るので、対向基板との装置組立て時に摺動接点長手方向
を基準とできるので組込み精度も良く、組込み易いもの
である。更に、特にスリット部を有して複数の接触面を
有する摺動接点においては、角度を有した直線状の接触
面であるのでスリット長さを個々に違えると先端部の長
さが異なり、従って個々の個有振動数も異なり、摺動接
触時、共振することがなく好適なものであるが、図３に
示す如くスリットの長さ２が同一でも、有効に作用する
ものである。According to the sliding contact of the present invention constructed as described above, since the sliding contact surface has an angle in the sliding contact operation direction with the counter substrate, slidable sliding contact can be achieved. It is difficult for dust particles, dust, and dust to accumulate, and is easy to remove. Here, the angle is preferably 5 to 25 degrees, and 5
If it is less than 25 degrees, the effect is small, and if it exceeds 25 degrees, the sliding contact becomes long and difficult to handle. The sliding contact mechanism includes rotary motion, linear motion, unidirectional motion, and reciprocating motion, but any of them is effective.
Further, since it has an oblique angle with respect to the longitudinal direction of the sliding contact, the longitudinal direction of the sliding contact can be used as a reference when assembling the device with the counter substrate, so that the assembling accuracy is good and the assembling is easy. Further, particularly in a sliding contact having a slit portion and a plurality of contact surfaces, since it is a linear contact surface having an angle, the length of the tip portion is different when the slit length is individually different, and therefore, The individual individual frequencies are different and are preferable because they do not resonate at the time of sliding contact. However, even if the slit lengths 2 are the same as shown in FIG. 3, they work effectively.

【０００６】[0006]

【実施例】以下に実施例と従来例について述べる。ま
ず、実施例として材質Ａｇ40％Ｐｄ40％Ｃｕ20％、板厚
0.08mmの帯状台材よりプレス金型打抜加工にて幅２mm、
スリット溝幅0.25mm、接触子本数３本、接触子幅 0.5m
m、接触子高さ 0.5mmで、摺動接点長さ方向と直角方向
に対して10度の角度を有して略直角状に折り曲げ成形し
て図１、図２に示す如く逆Ｌ字状で長手方向の長さ 5.4
mm及び５mmの摺動接点１とした。EXAMPLES Examples and conventional examples will be described below. First, as an example, material Ag 40% Pd 40% Cu 20%, plate thickness
2mm width from 0.08mm strip base material by press die punching
Slit groove width 0.25 mm, number of contacts 3, contact width 0.5 m
m, contact height is 0.5 mm, and it is bent and formed into a substantially right angle with an angle of 10 degrees with respect to the sliding contact length direction and the right angle direction. As shown in FIGS. In longitudinal direction 5.4
mm and 5 mm sliding contacts 1 were used.

【０００７】一方、従来例として斜めの角度を有してい
る以外は同様にして実施例と同一材質で長手方向の長さ
５mmの図６、図７に示す如く摺動接点１′とした。更
に、実施例及び従来例各々 100ケについて材質りん青銅
の台材端部に電気抵抗溶接にて取り付けて摺動可動子と
した。On the other hand, as a conventional example, a sliding contact 1'having the same material as that of the example and having a length of 5 mm in the longitudinal direction was formed as shown in FIGS. 6 and 7 except that it had an oblique angle. Further, about 100 pieces each of the example and the conventional example were attached to the end portions of the base material made of phosphor bronze by electric resistance welding to obtain sliding movers.

【０００８】然して、次の条件にて摺動接触試験を行っ
た。回路材質カーボン抵抗体、基板材質セラミックスか
らなる円形対向基板との接触力10grf 、回転数 180回／
分、通電 2.4mA、電圧12Ｖにて 300万回往復。この結
果、従来例においては、図４に示す如く電圧波形が不安
定で、摩耗粉やチリ、ゴミが摺動接点接触面に堆積して
いたのに対し実施例においては図３に示す如く電圧波形
は安定し、摩耗粉やチリ、ゴミの堆積がなかった。これ
はひとえに、本発明の摺動接点において斜めの角度で直
線状の摺動接触面としたことの効果によるものである。A sliding contact test was conducted under the following conditions. Circuit material Carbon resistor, substrate material Circular contact substrate made of ceramics 10grf, rotation speed 180 times /
Minutes, energization 2.4mA, voltage 12V 3 million times. As a result, in the conventional example, the voltage waveform was unstable as shown in FIG. 4, and abrasion powder, dust, and dust were deposited on the contact surface of the sliding contact, whereas in the example, the voltage waveform was as shown in FIG. The waveform was stable and there was no wear debris, dust, or dust accumulation. This is because the sliding contact of the present invention has a linear sliding contact surface at an oblique angle.

【０００９】[0009]

【発明の効果】以上のように、本発明の逆Ｌ字状摺動接
点によれば、摩耗粉、チリ、ゴミが集積し難く、また排
除し易くなり、もって安定した接触状態で長寿命が得ら
れるという効果を有するものである。As described above, according to the inverted L-shaped sliding contact of the present invention, abrasion powder, dust, and dust are less likely to accumulate and are easily removed, so that a stable contact state and a long life can be achieved. It has the effect of being obtained.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例の逆Ｌ字状摺動接点を示す平
面図である。FIG. 1 is a plan view showing an inverted L-shaped sliding contact according to an embodiment of the present invention.

【図２】図１の側面図である。FIG. 2 is a side view of FIG.

【図３】本発明のその他の実施例の逆Ｌ字状摺動接点を
示す図である。FIG. 3 is a view showing an inverted L-shaped sliding contact according to another embodiment of the present invention.

【図４】本発明の一実施例における電圧波形を示す図で
ある。FIG. 4 is a diagram showing voltage waveforms in an example of the present invention.

【図５】従来における電圧波形を示す図である。FIG. 5 is a diagram showing a conventional voltage waveform.

【図６】従来の逆Ｌ字状摺動接点を示す平面図である。FIG. 6 is a plan view showing a conventional inverted L-shaped sliding contact.

【図７】図６の側面図である。FIG. 7 is a side view of FIG.

【符号の説明】[Explanation of symbols]

１ 逆Ｌ字状摺動接点 1 Reverse L-shaped sliding contact

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 テープ材または板材からなる接触部を有
する逆Ｌ字状摺動接点において、摺動接点長手方向と直
角の方向に対して、５〜25度の角度で直線状の摺動接触
面を有したことを特徴とする逆Ｌ字状摺動接点。1. An inverted L-shaped sliding contact having a contact portion made of a tape material or a plate material, which is a linear sliding contact at an angle of 5 to 25 degrees with respect to a direction perpendicular to the longitudinal direction of the sliding contact. An inverted L-shaped sliding contact characterized by having a surface.