JP4357217B2

JP4357217B2 - Sliding device

Info

Publication number: JP4357217B2
Application number: JP2003174538A
Authority: JP
Inventors: 充山崎; 信一郎山田
Original assignee: Nippon Bearing Co Ltd
Current assignee: Nippon Bearing Co Ltd
Priority date: 2003-06-19
Filing date: 2003-06-19
Publication date: 2009-11-04
Anticipated expiration: 2023-06-19
Also published as: JP2005009589A

Description

【０００１】
【発明の属する技術分野】
本発明は、摺動装置に関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来の縦湾曲線摺動する摺動装置として、軸21に対して摺動体22が縦湾曲線摺動するように設けられた図１，２の摺動装置がある。具体的には、軸21及び摺動体22に、縦湾曲形状の第一負荷溝21ａが形成された縦湾曲形状の第一負荷部構成材21ｂ及び縦湾曲形状の第二負荷溝22ａが形成された縦湾曲形状の第二負荷部構成材22ｂが、該第一負荷溝21ａと第二負荷溝22ａとが対向して負荷路23が形成されるように設けられ、負荷路23には該負荷路23を転動移動する複数の転動体24が配設され、これらの転動体24は負荷路23を移動する板状の転動体保持器25により所定間隔を保持する状態で配設されている。
【０００３】
尚、図１，２の摺動装置の場合、負荷路23は左右一カ所ずつ設けられている。
【０００４】
ところで、一般的に前記第一負荷溝21ａ及び第二負荷溝22ａの端部開口Ｈ_２１，Ｈ_２２は、前記第一負荷部構成材21ｂ及び第二負荷部構成材22ｂの負荷路延設方向両端面に設けられている（第一負荷路21ａ及び第二負荷路22ａは切削加工により切削形成される為、負荷路延設方向両端面に必ず端部開口Ｈ_２１，Ｈ_２２が形成される。）。
【０００５】
従って、摺動体22の摺動移動に応じて前記負荷路23を移動する転動体保持器25が、前記第一負荷部構成材21ｂ及び第二負荷部構成材22ｂの負荷路延設方向端面から抜け落ちることを防止するため、この第一負荷部構成材21ｂ及び第二負荷部構成材22ｂの負荷路延設方向両端面にはストッパーが設けられ、一般的には、図１，２に図示したようなストッパーネジ27が採用される。
【０００６】
しかしながら、このようなストッパーネジ27を取り付けるためには、前記第一負荷部構成材21ｂ及び第二負荷部構成材22ｂの負荷路延設方向両端面に手間のかかるタップ加工を施す必要があり、特に、小型の摺動装置にこのタップ加工を施すのは非常に困難でコスト高となるのは避けられない。
【０００７】
また、このストッパーネジ27（ストッパー部材）は、軸１若しくは摺動体２の負荷部構成材取り付け面や摺動体22の摺動に干渉しないように、取り付け位置及び形状に多くの制約があり、この点からもコスト高となるのは避けられない。
【０００８】
更に、ストッパーネジ27の取り付けにも当然手間がかかり、また、このストッパーネジ27の分だけ摺動装置の長さ寸法が長くなり、汎用性の低下は避けられない。
【０００９】
本発明は、上述の問題点を解決したもので、第一負荷溝及び第二負荷溝を所定の形状とすることで、摺動体を摺動移動させた際、転動体保持器の端部が摺動体と当接して該転動体保持器の脱落が生ぜず、更に、ストッパーが不要となり、従来より製作工程及び部品点数を削減して製作が極めて容易且つコスト安となる極めて実用性に秀れた摺動装置を提供するものである。
【００１０】
【課題を解決するための手段】
添付図面を参照して本発明の要旨を説明する。
【００１１】
軸１に対して摺動体２が縦湾曲線摺動するように設けられた摺動装置であって、前記摺動体２は基部２ｃの左右に袖部２ｄ・２ｅを垂下した断面視逆凹形状のものであり、前記軸１と前記摺動体２の前記袖部２ｄ・２ｅの内面との間には縦湾曲形状の負荷路３が設けられ、この負荷路３には該負荷路３を転動移動する複数の転動体４が配設され、これらの転動体４は前記負荷路３を移動する転動体保持器５により所定間隔が保持される状態で配設され、前記負荷路３は、前記軸１と前記摺動体２に夫々対向状態となるように形成された縦湾曲形状の第一負荷溝１ａと第二負荷溝２ａとで構成され、この第一負荷溝１ａ及び第二負荷溝２ａの端部開口Ｈ_１，Ｈ_２は夫々前記軸１若しくは前記摺動体２の負荷路延設方向端面に存しないように構成され、前記第一負荷溝１ａは前記軸１に付設される第一負荷部構成材１ｂに形成され、この第一負荷溝１ａの端部開口Ｈ_１は前記第一負荷部構成材１ｂの上面に形成され、この第一負荷溝１ａは、前記第一負荷部構成材１ｂに設けられた平坦面を加工基準面として形成されるものであり、且つ、この第一負荷溝１ａは前記平坦面と平行若しくは垂直な接線を有する縦湾曲形状に形成され、前記第二負荷溝２ａは前記摺動体２に付設される第二負荷部構成材２ｂに形成され、この第二負荷溝２ａの端部開口Ｈ_２は前記第二負荷部構成材２ｂの上面に形成され、この第二負荷溝２ａは、前記第二負荷部構成材２ｂに設けられた平坦面を加工基準面として形成されるものであり、且つ、この第二負荷溝２ａは前記平坦面と平行若しくは垂直な接線を有する縦湾曲形状に形成され、前記転動体保持器５の端部が前記摺動体２の基部２ｃの下面に当接することで該転動体保持器５の脱落を防止するように構成されていることを特徴とする摺動装置に係るものである。
【００１２】
また、請求項１記載の摺動装置において、前記負荷路３は左右一対であることを特徴とする摺動装置に係るものである。
【００１３】
また、請求項１，２いずれか１項に記載の摺動装置において、前記第二負荷部構成材２ｂの上面は平坦面に形成され、この上面を加工基準面として前記第二負荷溝２ａが形成されていることを特徴とする摺動装置に係るものである。
【００１４】
また、請求項３記載の摺動装置において、前記第一負荷部構成材１ｂの下面は平坦面に形成され、この下面を加工基準面として前記第一負荷溝１ａが形成されていることを特徴とする摺動装置に係るものである。
【００１５】
また、請求項１〜４いずれか１項に記載の摺動装置において、前記第一負荷部構成材１ｂの下面は、上下面を夫々前記加工基準面と平行な平坦面とした前記軸１の基部１ｃの上面に当接し、前記第二負荷部構成材２ｂの上面は、上下面を夫々前記加工基準面と平行な平坦面とした前記摺動体２の基部２ｃの下面に当接していることを特徴とする摺動装置に係るものである。
【００１６】
【発明の作用及び効果】
摺動体２を軸１に対して縦湾曲線摺動させた際、負荷路３を移動する転動体保持器５の端部が摺動体２の基部２ｃの下面と当接するから、この転動体保持器５の移動が阻止され、よって、転動体保持器５の脱落は防止される。従って、従来のように第一負荷部構成材21ｂ及び第二負荷部構成材22ｂの負荷路延設方向両端面にストッパーネジ27（ストッパー部材）を設ける必要なく、また、困難なタップ加工も必要なく、製作工程及び部品点数を削減でき、しかも、このストッパー部材が不要となった分だけ長さ寸法を短くしてより汎用性を向上させることができる。
【００１７】
以上、本発明は、極めて容易且つコスト安に製作できる極めて実用性に秀れた摺動装置となる。
【００１８】
【発明の実施の形態】
図３〜５は本発明の一実施例を図示したものであり、以下に説明する。
【００１９】
本実施例は、軸１に対して摺動体２が縦湾曲線摺動するように設けられた摺動装置であって、軸１と摺動体２との間には縦湾曲形状の負荷路３が設けられ、この負荷路３には該負荷路３を転動移動する複数の転動体４が配設され、これらの転動体４は負荷路３を移動する転動体保持器５により所定間隔が保持される状態で配設され、前記負荷路３は、軸１と摺動体２に夫々対向状態となるように形成された縦湾曲形状の第一負荷溝１ａと第二負荷溝２ａとで構成され、この第一負荷溝１ａ及び第二負荷溝２ａの端部開口Ｈ_１，Ｈ_２は夫々軸１若しくは摺動体２の負荷路延設方向端面に存しないように構成されているものである。
【００２０】
各部を具体的に説明すると、図３に図示したように、軸１は、上下面を夫々平坦面とした平板形状の基部１ｃと該基部１ｃに立設された二つの断面視略正方形状の凸条１ｄとから成るものが採用されている。
【００２１】
この軸１には、上下面を夫々平坦面とした基部２ｃの左右に袖部２ｄ・２ｅを垂下した断面視略逆凹形状の摺動体２が被嵌されている。この袖部２ｄ・２ｅの下面は第二負荷溝２ａと同様な縦湾曲を有する縦湾曲形状面に設定されている。
【００２２】
軸１の上面にして両凸条１ｄの一側には、第一負荷溝１ａが形成された軸１と略同じ長さの第一負荷部構成材１ｂが付設されている。
【００２３】
第一負荷部構成材１ｂの下面は平坦面に形成され、この平坦面を加工基準面として前記第一負荷溝１ａが形成されている。具体的には、第一負荷溝１ａは、端部開口Ｈ_１が前記第一負荷部構成材１ｂの上面に形成され、且つ、前記平坦面と平行な接線を有する縦湾曲形状に形成されている。
【００２４】
この第一負荷部構成材１ｂは、前記平坦面を取付基準面として前記軸１の基部１ｃの上面に付設されている。具体的には、第一負荷部構成材１ｂは、その内側面が前記二つの凸条１ｄの外側面と当接した状態で夫々付設されている。
【００２５】
尚、本実施例においては、前記軸１に負荷部構成材１ｂを設けた構成であるが、直接軸１に前記第一負荷溝１ａを形成する（所謂一体型の）構成としても良く、この場合には、部品点数及び製作工程を一層削減してよりコスト安に製作できる。
【００２６】
摺動体２の下面にして両袖部２ｄ・２ｅの一側には、第二負荷溝２ａが形成された摺動体２と略同じ長さの第二負荷部構成材２ｂが付設されている。
【００２７】
第二負荷部構成材２ｂの上面は平坦面に形成され、この平坦面を加工基準面として前記第二負荷溝２ａが形成されている。具体的には、第二負荷溝２ａは、端部開口Ｈ_２が前記第二負荷部構成材２ｂの上面に形成され、且つ、前記平坦面と平行な接線を有する縦湾曲形状に形成されている（図４参照）。
【００２８】
この第二負荷部構成材２ｂは、前記平坦面を取付基準面として前記基部２ｃの下面に付設されている。具体的には、第二負荷部構成材２ｂは、その外側面が前記左右の袖部２ｄ・２ｅの内側面と当接した状態で夫々付設されている。
【００２９】
また、第一負荷部構成材１ｂの上面は前記第一負荷溝１ａと同様な縦湾曲を有する縦湾曲形状面に設定され、第二負荷部構成材２ｂの下面は前後所定長を残して平坦面に設定されている。従って、軸１と摺動体２との間隙を可及的に小さくすることができ、よって、本摺動装置の高さを可及的に低くし、コンパクト化が達成できる。
【００３０】
本実施例においては、第一負荷部構成材１ｂの下面及び第二負荷部構成材２ｂの上面に夫々第一負荷溝１ａ及び第二負荷溝２ａの加工基準面となる平坦面を形成しているが、この平坦面は第一負荷部構成材１ｂ及び第二負荷部構成材２ｂの側面等の他の面に形成しても良いし、これら双方の面に形成しても良い。側面を平坦面とし、この平坦面を加工基準面とした場合には、第一負荷溝１ａ及び第二負荷溝２ａは、該平坦面と垂直な接線を有する縦湾曲形状となるように形成する。
【００３１】
第一負荷溝１ａ及び第二負荷溝２ａは図５に図示したように、夫々断面視略横Ｖ字状に形成されている。この第一負荷溝１ａ及び第二負荷溝２ａにより負荷路３は断面視略正菱形状となる。
【００３２】
負荷路３には、転動体保持器５が配設される。この転動体保持器５は、板体に、転動体４が転動可能な状態で保持される転動体保持窓を所定間隔で複数設けたものであり、この転動体保持器５の両側が第一負荷溝１ａ及び第二負荷溝２ａの中央に形成される溝６に嵌入される。この転動体保持器５には、複数の転動体４が所定間隔をおいて保持される。また、この転動体保持器５は第一負荷溝１ａ及び第二負荷溝２ａと略同形状の縦湾曲形状に設定されている。
【００３３】
尚、転動体保持器５の板体としては、前記縦湾曲形状になじみやすいように、湾曲方向に可撓性を有するものが採用される。この可撓性は、合成樹脂等の可撓性を有する素材に起因するものや、板体を細かな板体から構成し、この細かな板体をリンク機構等を介して屈曲自在に連結した構成とすることに起因するものでも良い。
【００３４】
転動体４としては円柱体が採用され、これらの円柱体は隣接する円柱体の軸芯線が直角に交叉する状態で配設されている。
【００３５】
以上、本実施例は、摺動機構として公知のクロスローラ機構を採用しているが、勿論ボールを転動体として配設した構成等、他の摺動機構を採用しても良い。
【００３６】
更に、本実施例においては、前記軸１及び摺動体２に形成した平坦面と、前記第一負荷部構成材１ｂ及び第二負荷部構成材２ｂに形成した平坦面とが平行になるように設定している。即ち、この軸１及び摺動体２に形成した平坦面を取付基準面として被取付部材に軸１及び摺動体２を取り付けすることが可能となる。
【００３７】
具体的には、上述のように第一負荷溝１ａ及び第二負荷溝２ａは、第一負荷部構成材１ｂ若しくは第二負荷部構成材２ｂに設けた加工基準面と平行な接線を有する縦湾曲形状に設定しているから、軸１若しくは摺動体２を所定の場所に取り付ける際、この軸１若しくは摺動体２に形成した（前記第一負荷部構成材１ｂ若しくは第二負荷部構成材２ｂに設けた加工基準面と平行な）平坦面は、摺動体２の湾曲線摺動軌道の曲率中心と負荷路３の曲率中心とを一致させる際の面として用いることができる。
【００３８】
従って、縦湾曲線摺動する摺動装置で重要な回転中心位置設定を容易且つ精度良く行うことができる。
【００３９】
本実施例は上述のように構成したから、摺動体２を軸１に対して縦湾曲線摺動させた際、負荷路３を移動する転動体保持器５は、その端部が摺動体２の基部２ｃ下面に当接するから、転動体保持器５の移動は阻止され、よって、転動体保持器５の脱落は確実に防止される。従って、従来のように第一負荷部構成材21ｂ及び第二負荷部構成材22ｂの負荷路延設方向両端面にストッパーネジ27（ストッパー部材）を設ける必要なく、また、困難なタップ加工も必要なく、製作工程及び部品点数を削減でき、しかも、このストッパー部材が不要となった分だけ長さ寸法を短くしてより汎用性を向上させることができ、外観も良くなる。
【００４０】
更に、前記第一負荷部構成材１ｂ若しくは第二負荷部構成材２ｂに設けた平坦面を加工基準面として第一負荷溝１ａ及び第二負荷溝２ａを形成するため、縦湾曲線摺動する摺動装置で重要な回転中心位置精度を容易に精度良く得ることができる。その上、平坦面を基準として取り付けることができ調整が容易であるから、組み立てが容易で、極めてコスト安となる。
【００４１】
よって、本実施例は、極めて容易且つコスト安に製作できる極めて実用性に秀れた画期的な摺動装置となる。
【図面の簡単な説明】
【図１】従来例の一部を切り欠いた説明斜視図である。
【図２】従来例の第二負荷部構成材の説明側面図である。
【図３】本実施例の一部を切り欠いた説明斜視図である。
【図４】本実施例の第二負荷部構成材の説明側面図である。
【図５】本実施例の説明断面図である。
【符号の説明】
１軸
１ａ第一負荷溝
１ｂ第一負荷部構成材
２摺動体
２ａ第二負荷溝
２ｂ第二負荷部構成材
３負荷路
４転動体
５転動体保持器
Ｈ_１・Ｈ_２端部開口[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding device.
[0002]
[Prior art and problems to be solved by the invention]
As a conventional sliding device that slides along a vertical curve line, there is the sliding device shown in FIGS. Specifically, a longitudinally curved first load portion component 21b and a longitudinally curved second load groove 22a formed with longitudinally curved first load grooves 21a are formed on the shaft 21 and the sliding body 22. The vertical load-shaped second load portion constituting material 22b is provided so that the first load groove 21a and the second load groove 22a face each other to form a load path 23, and the load path 23 includes the load A plurality of rolling elements 24 that roll and move on the path 23 are arranged, and these rolling elements 24 are arranged in a state of being held at a predetermined interval by a plate-like rolling element holder 25 that moves on the load path 23. .
[0003]
In the case of the sliding device of FIGS. 1 and 2, the load path 23 is provided at one place on each of the left and right sides.
[0004]
By the way, in general, the end openings H ₂₁ and H ₂₂ of the first load groove 21a and the second load groove 22a are in the direction of extending the load path of the first load part constituent material 21b and the second load part constituent material 22b. Provided on both end faces (since the first load path 21a and the second load path 22a are formed by cutting, end openings H ₂₁ and H ₂₂ are always formed on both end faces in the load path extending direction. .)
[0005]
Accordingly, the rolling element cage 25 that moves along the load path 23 in accordance with the sliding movement of the slide body 22 is provided from the end surfaces in the load path extending direction of the first load portion constituting material 21b and the second load portion constituting material 22b. In order to prevent the first load part constituting material 21b and the second load part constituting material 22b from falling off, stoppers are provided on both end surfaces in the load path extending direction, and are generally shown in FIGS. Such a stopper screw 27 is employed.
[0006]
However, in order to attach such a stopper screw 27, it is necessary to perform laborious tapping on both end surfaces of the first load portion constituting material 21b and the second load portion constituting material 22b in the load path extending direction, In particular, it is very difficult and costly to apply this tapping to a small sliding device.
[0007]
Further, the stopper screw 27 (stopper member) has many restrictions on the mounting position and shape so as not to interfere with the sliding of the load member constituting material of the shaft 1 or the sliding body 2 and the sliding of the sliding body 22. In terms of cost, it is inevitable that costs will increase.
[0008]
Furthermore, it takes a lot of time to attach the stopper screw 27, and the length of the sliding device is increased by the amount of the stopper screw 27, so that a decrease in versatility is unavoidable.
[0009]
The present invention solves the above-described problems, and when the first load groove and the second load groove have a predetermined shape, when the sliding body is slid, the end of the rolling element cage is The rolling element cage does not come off when it comes into contact with the sliding body. Furthermore, a stopper is not required, and the manufacturing process and the number of parts are reduced compared to the previous, making the manufacturing extremely easy and cost-effective. A sliding device is provided.
[0010]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0011]
A sliding device provided such that a sliding body 2 slides in a longitudinally curved line with respect to a shaft 1, and the sliding body 2 has a reverse concave shape in cross-sectional view in which sleeve portions 2 d and 2 e are suspended to the left and right of a base portion 2 c. A longitudinally curved load path 3 is provided between the shaft 1 and the inner surfaces of the sleeve portions 2d and 2e of the sliding body 2 , and the load path 3 is rotated around the load path 3. A plurality of rolling elements 4 that are moved and moved are disposed, and these rolling elements 4 are disposed in a state where a predetermined interval is maintained by a rolling element holder 5 that moves along the load path 3. The first load groove 1a and the second load groove are composed of a first load groove 1a and a second load groove 2a each having a longitudinally curved shape formed so as to face the shaft 1 and the sliding body 2, respectively. configured such that the end opening H _1, H ₂ of 2a is not consists in a load path extending end face of each said axis 1 or the sliding body 2 Is, the first load groove 1a is formed in the first load portion constituent elements 1b which are attached to the shaft 1, the upper surface of the end opening H ₁ of the first load groove 1a is the first load portion constituent elements 1b The first load groove 1a is formed with a flat surface provided in the first load portion constituting material 1b as a processing reference surface, and the first load groove 1a is formed by the flat surface. vertical curved shape is formed, the second load groove 2a is formed on the second load portion constituent elements 2b which are attached to the sliding body 2, the end of the second load grooves 2a having a parallel or perpendicular tangent and part opening H ₂ is formed on the upper surface of the second load portion constituent elements 2b, the second load grooves 2a are those forming a flat surface provided on the second load portion constituent elements 2b as a machining reference surface And the second load groove 2a is a tangent line parallel to or perpendicular to the flat surface. The rolling element holder 5 is configured to prevent the rolling element holder 5 from falling off when the end of the rolling element holder 5 comes into contact with the lower surface of the base 2c of the sliding body 2 . The present invention relates to a sliding device.
[0012]
Further, in the sliding apparatus according to claim 1 Symbol mounting, the load path 3 is one of the sliding device, which is a pair.
[0013]
Further, in the sliding device according to any one of claims 1 and 2, the upper surface of the second load member constituting material 2b is formed as a flat surface, and the second load groove 2a is formed with the upper surface as a processing reference surface. The present invention relates to a sliding device that is formed.
[0014]
4. The sliding device according to claim 3 , wherein the lower surface of the first load portion constituting material 1b is formed as a flat surface, and the first load groove 1a is formed with the lower surface as a processing reference surface. This relates to the sliding device.
[0015]
Moreover, the sliding apparatus of any one of Claims 1-4 WHEREIN: As for the lower surface of said 1st load part structure material 1b, the upper and lower surfaces of the said axis | shaft 1 made into a flat surface parallel to the said process reference plane, respectively. Abutting on the upper surface of the base portion 1c, the upper surface of the second load portion constituting material 2b is in contact with the lower surface of the base portion 2c of the sliding body 2 whose upper and lower surfaces are flat surfaces parallel to the processing reference surface, respectively. The present invention relates to a sliding device characterized by the above.
[0016]
[Action and effect of the invention]
When the sliding body 2 is slid along the longitudinal curve with respect to the shaft 1, the end of the rolling element holder 5 that moves in the load path 3 comes into contact with the lower surface of the base portion 2 c of the sliding body 2. The movement of the cage 5 is prevented, and thus the rolling element holder 5 is prevented from falling off. Accordingly, it is not necessary to provide stopper screws 27 (stopper members) on both end surfaces of the first load portion constituting material 21b and the second load portion constituting material 22b in the load path extending direction as in the prior art, and difficult tapping is also necessary. In addition, the manufacturing process and the number of parts can be reduced, and the length can be shortened by the amount that the stopper member is no longer needed, thereby improving the versatility.
[0017]
As described above, the present invention provides a sliding device with excellent practicality that can be manufactured very easily and at a low cost.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
3 to 5 illustrate one embodiment of the present invention, which will be described below.
[0019]
The present embodiment is a sliding device provided so that the sliding body 2 slides in a longitudinally curved line with respect to the shaft 1, and the longitudinally curved load path 3 is provided between the shaft 1 and the sliding body 2. The load path 3 is provided with a plurality of rolling elements 4 that roll and move along the load path 3, and these rolling elements 4 are separated by a rolling element holder 5 that moves along the load path 3. The load path 3 is configured by a first load groove 1a and a second load groove 2a having a longitudinally curved shape formed so as to be opposed to the shaft 1 and the sliding body 2, respectively. The end openings H ₁ and H ₂ of the first load groove 1a and the second load groove 2a are configured not to exist on the end surfaces of the shaft 1 or the sliding body 2 in the load path extending direction. .
[0020]
Specifically, as shown in FIG. 3, the shaft 1 has a flat plate-like base portion 1 c whose upper and lower surfaces are flat surfaces, and two substantially square shapes in sectional view standing on the base portion 1 c. What consists of the protruding item | line 1d is employ | adopted.
[0021]
The shaft 1 is fitted with a slide body 2 having a substantially reverse concave shape in cross-sectional view in which sleeve portions 2d and 2e are suspended on the left and right sides of a base portion 2c whose upper and lower surfaces are flat surfaces. The lower surfaces of the sleeve portions 2d and 2e are set to a longitudinally curved shape surface having the same longitudinal curvature as that of the second load groove 2a.
[0022]
A first load portion constituting material 1b having a length substantially the same as that of the shaft 1 on which the first load groove 1a is formed is attached to one side of the both ridges 1d on the upper surface of the shaft 1.
[0023]
The lower surface of the first load portion constituting material 1b is formed as a flat surface, and the first load groove 1a is formed using the flat surface as a processing reference surface. More specifically, the first load grooves 1a are formed end opening H ₁ is the upper surface of the first load portion constituent elements 1b, and, are formed in the vertical curved shape with parallel tangents and the flat surface Yes.
[0024]
The first load portion constituting material 1b is attached to the upper surface of the base portion 1c of the shaft 1 with the flat surface as an attachment reference surface. Specifically, the first load portion constituting material 1b is attached in a state where the inner side surface thereof is in contact with the outer side surfaces of the two convex strips 1d.
[0025]
In the present embodiment, the load portion constituting material 1b is provided on the shaft 1, but the first load groove 1a may be directly formed on the shaft 1 (so-called integral type). In this case, the number of parts and the manufacturing process can be further reduced, and the manufacturing can be performed at a lower cost.
[0026]
On the lower surface of the sliding body 2 and on one side of both sleeve portions 2d and 2e, a second load portion constituting material 2b having the same length as the sliding body 2 in which the second load groove 2a is formed is attached.
[0027]
The upper surface of the second load portion constituting material 2b is formed as a flat surface, and the second load groove 2a is formed using the flat surface as a processing reference surface. Specifically, the second load groove 2a is formed the end portion opening H ₂ on the upper surface of the second load portion constituent elements 2b, and, being formed in the vertical curved shape with parallel tangents and the flat surface (See FIG. 4).
[0028]
The second load portion constituting material 2b is attached to the lower surface of the base portion 2c with the flat surface as an attachment reference surface. Specifically, the second load portion constituting member 2b is attached in a state where the outer side surface thereof is in contact with the inner side surfaces of the left and right sleeve portions 2d and 2e.
[0029]
Further, the upper surface of the first load part constituting material 1b is set to a longitudinally curved shape surface having the same vertical curvature as the first load groove 1a, and the lower surface of the second load part constituting material 2b is flat leaving a predetermined length in the front and rear. Is set on the surface. Therefore, the gap between the shaft 1 and the sliding body 2 can be made as small as possible. Therefore, the height of the present sliding device can be made as low as possible and downsizing can be achieved.
[0030]
In the present embodiment, flat surfaces serving as processing reference surfaces of the first load groove 1a and the second load groove 2a are formed on the lower surface of the first load portion constituting material 1b and the upper surface of the second load portion constituting material 2b, respectively. However, this flat surface may be formed on other surfaces such as the side surfaces of the first load portion constituting material 1b and the second load portion constituting material 2b, or may be formed on both surfaces. When the side surface is a flat surface and this flat surface is used as a processing reference surface, the first load groove 1a and the second load groove 2a are formed to have a vertically curved shape having a tangent line perpendicular to the flat surface. .
[0031]
As shown in FIG. 5, the first load groove 1a and the second load groove 2a are each formed in a substantially horizontal V shape in sectional view. Due to the first load groove 1a and the second load groove 2a, the load path 3 has a substantially rhomboid shape in a sectional view.
[0032]
In the load path 3, a rolling element holder 5 is disposed. This rolling element holder 5 is provided with a plurality of rolling element holding windows, which are held in a state in which the rolling element 4 is rollable, at a predetermined interval on the plate body. It fits in the groove | channel 6 formed in the center of the one load groove | channel 1a and the 2nd load groove | channel 2a. The rolling element holder 5 holds a plurality of rolling elements 4 at a predetermined interval. Moreover, this rolling element holder | retainer 5 is set to the longitudinal curve shape of the substantially same shape as the 1st load groove | channel 1a and the 2nd load groove | channel 2a.
[0033]
In addition, as a plate body of the rolling element holder 5, one having flexibility in the bending direction is adopted so as to be easily adapted to the longitudinally curved shape. This flexibility is caused by a flexible material such as a synthetic resin, or the plate body is composed of a fine plate body, and the fine plate body is flexibly connected via a link mechanism or the like. It may be caused by the configuration.
[0034]
Cylindrical bodies are employed as the rolling elements 4, and these cylindrical bodies are disposed in a state in which the axis lines of adjacent cylindrical bodies intersect at right angles.
[0035]
As described above, this embodiment employs a known cross roller mechanism as a sliding mechanism, but other sliding mechanisms such as a configuration in which balls are arranged as rolling elements may be employed.
[0036]
Further, in the present embodiment, the flat surfaces formed on the shaft 1 and the sliding body 2 are parallel to the flat surfaces formed on the first load portion constituting material 1b and the second load portion constituting material 2b. It is set. That is, it is possible to attach the shaft 1 and the sliding body 2 to the member to be attached using the flat surface formed on the shaft 1 and the sliding body 2 as an attachment reference surface.
[0037]
Specifically, as described above, the first load groove 1a and the second load groove 2a are longitudinally having a tangent line parallel to the machining reference plane provided in the first load portion constituting material 1b or the second load portion constituting material 2b. Since the curved shape is set, when the shaft 1 or the sliding body 2 is attached to a predetermined place, it is formed on the shaft 1 or the sliding body 2 (the first load portion constituting material 1b or the second load portion constituting material 2b). The flat surface (parallel to the processing reference surface provided on the surface) can be used as a surface for matching the center of curvature of the curved line sliding track of the sliding body 2 with the center of curvature of the load path 3.
[0038]
Therefore, it is possible to easily and accurately set the rotation center position that is important for a sliding device that slides in a longitudinally curved line.
[0039]
Since the present embodiment is configured as described above, when the sliding body 2 is slid along the longitudinal curve with respect to the shaft 1, the rolling element holder 5 that moves along the load path 3 has an end portion on the sliding body 2. Therefore, the rolling element retainer 5 is prevented from moving, so that the rolling element retainer 5 is reliably prevented from falling off. Accordingly, it is not necessary to provide stopper screws 27 (stopper members) on both end surfaces of the first load portion constituting material 21b and the second load portion constituting material 22b in the load path extending direction as in the prior art, and difficult tapping is also necessary. In addition, the manufacturing process and the number of parts can be reduced, and the length dimension can be shortened by the amount that the stopper member is no longer needed, so that versatility can be improved and the appearance can be improved.
[0040]
Furthermore, in order to form the first load groove 1a and the second load groove 2a using the flat surface provided on the first load part constituting material 1b or the second load part constituting material 2b as a processing reference surface, the first load groove 1a and the second load groove 2a slide. The rotational center position accuracy that is important for the sliding device can be easily obtained with high accuracy. In addition, the flat surface can be attached as a reference and adjustment is easy, so that assembly is easy and the cost is extremely low.
[0041]
Therefore, the present embodiment is an epoch-making sliding device with excellent practicality that can be manufactured very easily and at low cost.
[Brief description of the drawings]
FIG. 1 is an explanatory perspective view in which a part of a conventional example is cut away.
FIG. 2 is an explanatory side view of a second load member constituting material of a conventional example.
FIG. 3 is an explanatory perspective view in which a part of the embodiment is cut away.
FIG. 4 is an explanatory side view of a second load part constituting material of the present embodiment.
FIG. 5 is an explanatory sectional view of the present embodiment.
[Explanation of symbols]
1 shaft 1a first load groove 1b first load portion constituent elements 2 slide 2a second load groove 2b second load portion constituent elements 3 load path 4 rolling elements 5 rolling body cage H ₁ · _{H 2} end opening

Claims

A sliding device provided such that a sliding body slides in a longitudinally curved line with respect to a shaft, wherein the sliding body has a reverse concave shape in cross-sectional view in which a sleeve portion is suspended to the left and right of a base, and the shaft A longitudinally curved load path is provided between the sliding body and the inner surface of the sleeve portion of the sliding body , and a plurality of rolling elements that roll and move along the load path are disposed in the load path. The moving body is disposed in a state where a predetermined interval is maintained by a rolling element holder that moves in the load path, and the load path is formed in a longitudinally curved shape so as to be opposed to the shaft and the sliding body, respectively. The first load groove and the second load groove are configured so that the end openings of the first load groove and the second load groove do not exist on the end surfaces of the shaft or the sliding body in the load path extending direction, respectively. is, the first load groove is formed in the first load portion constituent elements that are attached to the shaft, the first load groove Part opening is formed on the upper surface of the first load portion constituent elements, the first load groove is intended to be a flat surface provided on the first load portion constituent elements as a machining reference surface, and, the first load groove is formed vertically curved shape with parallel or perpendicular tangent to the flat surface, the second load groove is formed in the second load portion constituent elements that are attached to the sliding body, the first end opening of the secondary load groove is formed on the upper surface of the second load portion constituent elements, the second load groove, which is formed a flat surface provided on the second load portion constituent elements as a machining reference surface And the second load groove is formed in a longitudinally curved shape having a tangent line parallel or perpendicular to the flat surface, and the end of the rolling element cage abuts the lower surface of the base of the sliding body. and characterized in that it is configured to prevent falling off of the rolling member retainer That the sliding apparatus.

In the sliding device according to claim 1 Symbol mounting, a sliding device wherein the load path is a left-right pair.

3. The sliding device according to claim 1, wherein an upper surface of the second load portion constituent material is formed as a flat surface, and the second load groove is formed using the upper surface as a processing reference surface. A sliding device characterized by that.

4. The sliding device according to claim 3 , wherein a lower surface of the first load portion constituent material is formed as a flat surface, and the first load groove is formed using the lower surface as a processing reference surface. apparatus.

5. The sliding device according to claim 1, wherein a lower surface of the first load portion constituent material is an upper surface of a base portion of the shaft in which upper and lower surfaces are flat surfaces parallel to the processing reference surface, respectively. The sliding device according to claim 1, wherein the upper surface of the second load portion constituting material is in contact with the lower surface of the base portion of the sliding body whose upper and lower surfaces are flat surfaces parallel to the processing reference surface.