JP3060471U - Resin bearing - Google Patents
Resin bearingInfo
- Publication number
- JP3060471U JP3060471U JP1998010286U JP1028698U JP3060471U JP 3060471 U JP3060471 U JP 3060471U JP 1998010286 U JP1998010286 U JP 1998010286U JP 1028698 U JP1028698 U JP 1028698U JP 3060471 U JP3060471 U JP 3060471U
- Authority
- JP
- Japan
- Prior art keywords
- flange portion
- plate
- bearing
- cylindrical portion
- rear flange
- 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.)
- Expired - Lifetime
Links
Abstract
(57)【要約】
【課題】 プリンタのフィードローラシャフトや用紙排
出ローラシャフトなどの回転軸を支持することに用いら
れる樹脂製軸受において、二分割成形型を用いて成形す
ることができ、しかも、シャーシなどの板状体に対する
取付安定性や取付作業性を向上させ、取付け時の安全性
を向上させる。
【解決手段】 筒部２に前鍔部３と後鍔部４とを突設す
る。前鍔部３の後方側と後鍔部４の前方側とに二分割成
形型の抜き跡Ｆ１，Ｆ２を有する。前鍔部３を、筒部２
の直径長さよりも短い幅を有する一対の突片によって形
成する。後鍔部４を、前鍔部３よりも突き出た略半円形
の一対の突片によって形成する。後鍔部４に突起５１を
有する板片５を設ける。後鍔部４に、指先で摘むことの
できる板片状の把手６を設ける。
(57) [Problem] To provide a resin bearing used for supporting a rotary shaft such as a feed roller shaft or a paper discharge roller shaft of a printer, which can be molded using a two-piece molding die. The present invention improves mounting stability and mounting workability with respect to a plate-like body such as a chassis, and improves safety during mounting. SOLUTION: A front flange portion 3 and a rear flange portion 4 are protruded from a tube portion 2. There are two traces F1 and F2 of a two-piece mold on the rear side of the front flange 3 and on the front side of the rear flange 4. Connect the front collar 3 to the cylinder 2
Formed by a pair of projecting pieces having a width shorter than the diameter length of. The rear flange 4 is formed by a pair of substantially semicircular protrusions protruding from the front flange 3. A plate piece 5 having a projection 51 is provided on the rear flange 4. The rear flange 4 is provided with a plate-like handle 6 that can be picked with a fingertip.
Description
【０００１】[0001]
本考案は、樹脂製軸受、詳しくは、プリンタのフィードローラシャフトや用紙 排出ローラシャフトといった回転軸、あるいはその他の各種機器に採用される回 転軸を摺動回転自在に支持することに用いられる樹脂製軸受に関する。 The present invention relates to a resin bearing used to support a rotating shaft such as a feed roller shaft or a paper discharging roller shaft of a printer, or a rotating shaft employed in various other devices, in a slidable manner. Related to bearings.
【０００２】[0002]
特開平８−１３５６５４号公報に、プリンタの水平軸を支持するための軸受と して、挿入孔を有するフランジ板の複数箇所に爪片を突設したものが開示されて いる。この軸受は、上記爪片をボスの孔部に差し込んで係止させることによって そのボスに取り付けられるようになっている。また、特開平１０−６１５９０号 公報には、電動機の回転軸を支持することのために焼結含油軸受を用いることが 記載されている。 Japanese Patent Application Laid-Open No. 8-135654 discloses a bearing for supporting a horizontal shaft of a printer in which claw pieces are protruded at a plurality of positions on a flange plate having an insertion hole. This bearing is attached to the boss by inserting the claw piece into the hole of the boss and locking it. Japanese Patent Application Laid-Open No. H10-61590 describes that a sintered oil-impregnated bearing is used to support a rotating shaft of an electric motor.
【０００３】 一方、図４〜図６にプリンタのフィードローラシャフトＳ１や用紙排出ローラ シャフトＳ２といった回転軸１を支持することに用いられる従来の樹脂製軸受（ 以下「軸受」という）Ａを示してある。図４や図５を併せ見ることによって判る ように、この軸受Ａは、回転軸１を摺動回転自在に支持する筒部２の軸方向一端 部と他端部とに振り分けて径外方向に向けて前鍔部３と後鍔部４とが突設されて いる。前鍔部３は、筒部２の周方向の相反する２箇所から反対向きに突き出しか つ上記筒部の直径長さＤよりも短い幅Ｗ１を有する略矩形の一対の突片３１，３ １によって形成されている。また、後鍔部４も、筒部２の周方向の相反する２箇 所から反対向きに突き出しかつ上記筒部の直径長さＤよりも短い幅Ｗ２を有する 略矩形の一対の突片４１，４１によって形成されている。On the other hand, FIGS. 4 to 6 show a conventional resin bearing (hereinafter, referred to as a “bearing”) A used to support a rotary shaft 1 such as a feed roller shaft S1 and a paper discharge roller shaft S2 of a printer. is there. As can be seen from a combination of FIGS. 4 and 5, the bearing A is divided into one end and the other end in the axial direction of the cylindrical portion 2 that supports the rotating shaft 1 so as to be slidable and rotatable. A front flange portion 3 and a rear flange portion 4 are provided so as to project. The front flange 3 protrudes in opposite directions from two opposite positions in the circumferential direction of the cylinder 2 and has a pair of substantially rectangular projections 31, 31 having a width W1 shorter than the diameter D of the cylinder. Is formed by The rear flange portion 4 also protrudes in opposite directions from two opposite positions in the circumferential direction of the cylindrical portion 2 and has a pair of substantially rectangular projecting pieces 41 having a width W2 shorter than the diameter D of the cylindrical portion. 41 are formed.
【０００４】 この軸受Ａは、二分割された一対の成形型を合わせて形成した成形空間に溶融 樹脂を注入して硬化させることにより一体成形されており、成形後には、それら の成形型を、成形された軸受Ａの筒部２の軸方向に沿って互いに反対側へ離反さ せることによって成形型から取り出される。そのため、前鍔部３の後方側と後鍔 部４の前方側とに筒部２の軸方向に接離される二分割成形型（不図示）の抜き跡 Ｆ１，Ｆ２を有しており、その結果、筒部２からの前鍔部３の突出方向と後鍔部 ４の突出方向とが９０度の角度だけ異なっている。[0004] The bearing A is integrally molded by injecting and curing a molten resin into a molding space formed by combining a pair of two divided molds, and after molding, the molds are removed. The bearing A is taken out of the molding die by moving the bearing A away from each other along the axial direction of the cylindrical portion 2. For this reason, there are punched traces F1 and F2 of a two-piece molding die (not shown) that are brought into contact with and separated in the axial direction of the cylindrical portion 2 on the rear side of the front flange portion 3 and on the front side of the rear flange portion 4. As a result, the direction in which the front flange 3 protrudes from the cylinder 2 and the direction in which the rear flange 4 protrudes differ by an angle of 90 degrees.
【０００５】 また、図４や図６のように、上記軸受Ａが取り付けられるシャーシなどの板状 体８には、円形孔とその円形孔の両側に張り出した矩形孔とを合わせた形の取付 孔部８１が開設されている。この取付孔部８１の形状は、上記軸受Ａの筒部２と 前鍔部３とによって形作られた輪郭形状に近似する形状になっている。この取付 孔部８１を利用して板状体８に軸受Ａを取り付けるときには、その取付孔部８１ に筒部２と前鍔部３とを挿入した後、図６の矢印ａのように所定角度だけ軸受Ａ を回転させる。このようにすると、筒部２が取付孔部８１に支持されかつ前鍔部 ３と後鍔部４とが板状体８を挟持するようになり、それによって軸受Ａが板状体 ８に取り付けられる。なお、図例の軸受Ａでは、後鍔部４の一方側の突片４に径 外方向に突き出た板片５が連設され、その板片５の前面側に、板状体８に形成さ れた位置決め用の凹部８２に嵌まり込む突起５１が設けられており、その突起５ １が凹部８２に嵌まり込むことによって軸受Ａが回転軸１の回転方向の所定位置 に位置決めされるようになっている。As shown in FIG. 4 and FIG. 6, a plate-shaped body 8 such as a chassis to which the bearing A is mounted has a mounting shape in which a circular hole and rectangular holes projecting on both sides of the circular hole are combined. A hole 81 is provided. The shape of the mounting hole 81 is similar to the contour formed by the cylindrical portion 2 and the front flange portion 3 of the bearing A. When the bearing A is mounted on the plate-shaped body 8 using the mounting hole 81, the cylindrical portion 2 and the front flange 3 are inserted into the mounting hole 81, and then a predetermined angle as shown by an arrow a in FIG. Only the bearing A is rotated. In this way, the cylindrical portion 2 is supported by the mounting hole portion 81, and the front flange portion 3 and the rear flange portion 4 sandwich the plate body 8, whereby the bearing A is attached to the plate body 8. Can be In the bearing A shown in the figure, a plate piece 5 protruding in the radial direction is continuously provided on the protruding piece 4 on one side of the rear flange portion 4, and a plate-like body 8 is formed on the front side of the plate piece 5. The projection 51 is provided so as to be fitted into the positioning concave portion 82. The projection 51 is fitted into the concave portion 82 so that the bearing A is positioned at a predetermined position in the rotation direction of the rotary shaft 1. It has become.
【０００６】[0006]
図４〜図６で説明した従来の軸受Ａにあっては、前鍔部３を形成している一対 の突片３１，３１の幅Ｗ１や後鍔部４を形成している一対の突片４１，４１の幅 Ｗ２のいずれもが、筒部２の直径長さＤよりも短くなっており、しかも、それら の各突片３１，４１は略矩形になっている。このため、図６のようにその軸受Ａ を板状体８に取り付けたときに、前鍔部３と板状体８との重なり箇所の面積や後 鍔部４と板状体８との重なり箇所の面積をそれほど大きく確保することができず 、そのことが、板状体８に対する軸受Ａの取付安定性を高めることの制約になり 、回転軸１の回転時に軸受Ａがぐらついてプリンタによる印刷精度に悪影響を及 ぼすおそれがあるという問題があった。 In the conventional bearing A described with reference to FIGS. 4 to 6, the width W1 of the pair of projections 31, 31 forming the front flange 3 and the pair of projections forming the rear flange 4. Each of the widths W2 of 41, 41 is shorter than the diameter length D of the cylindrical portion 2, and each of the protruding pieces 31, 41 is substantially rectangular. For this reason, when the bearing A is attached to the plate 8 as shown in FIG. 6, the area of the overlapping portion between the front flange 3 and the plate 8 and the overlap between the rear flange 4 and the plate 8 are determined. It is not possible to secure a large area of the portion, which restricts the mounting stability of the bearing A with respect to the plate-shaped body 8. There was a problem that accuracy could be adversely affected.
【０００７】 一方、図６で説明したところから判るように、上記軸受Ａは、その後鍔部４を 指先で摘んで板状体８に取り付けられるのであるけれども、上記のようにその後 鍔部４が小さな一対の突片４１，４１によって形成されているに過ぎないために 指先で摘むこと自体が煩わしく、ましてや、筒部２と前鍔部３とを取付孔部８１ に挿入した後、図６の矢印ａのように所定角度だけ軸受Ａを回転させる操作がき わめて煩わしいという問題を有していた。また、場合によっては、取付け時に板 状体８のエッジが作業者の指先を傷付ける危険もあった。On the other hand, as can be seen from the description of FIG. 6, the bearing A is attached to the plate-like body 8 by subsequently picking the flange 4 with a fingertip. Since it is only formed by a pair of small projections 41, 41, it is cumbersome to pick it with a fingertip, and even better, after inserting the cylindrical portion 2 and the front flange portion 3 into the mounting hole 81, FIG. There was a problem that the operation of rotating the bearing A by a predetermined angle as shown by the arrow a was extremely troublesome. Further, in some cases, the edge of the plate-shaped member 8 may damage the operator's fingertip at the time of attachment.
【０００８】 これらの問題点は、冒頭に掲げた特開平８−１３５６５４号公報や特開平１０ −６１５９０号公報に記載されている技術によっては到底解決することができな い。[0008] These problems cannot be solved at all by the techniques described in JP-A-8-135654 and JP-A-10-61590 listed at the beginning.
【０００９】 本考案は以上の事情や問題に鑑みてなされたものであり、特に後鍔部の形状に 工夫を講じることによって、二分割成形型を用いて従来と同様の手法で成形する ことができるものでありながら、シャーシなどの板状体に対する取付安定性が向 上する軸受を提供することを目的とする。The present invention has been made in view of the above-mentioned circumstances and problems. In particular, by devising the shape of the rear flange portion, it is possible to mold the same using a two-piece mold in the same manner as in the past. It is an object of the present invention to provide a bearing which can be mounted and has improved mounting stability to a plate-like body such as a chassis.
【００１０】 また、本考案は、取付作業性が高まり、同時に、取付け時の安全性が向上する 軸受を提供することを目的とする。[0010] Another object of the present invention is to provide a bearing in which mounting workability is enhanced and, at the same time, safety during mounting is improved.
【００１１】[0011]
本考案に係る軸受は、回転軸を摺動回転自在に支持する筒部の軸方向一端部と 他端部とに振り分けて径外方向に向けて前鍔部と後鍔部とが突設され、上記前鍔 部の後方側と上記後鍔部の前方側とに上記筒部の軸方向に接離される二分割成形 型の抜き跡を有し、上記筒部と上記前鍔部とによって形作られた輪郭形状に近似 する形状の取付孔部を有する板状体の上記取付孔部に上記筒部と上記前鍔部とを 挿入して回転させることによって、上記筒部が上記取付孔部に支持されかつ上記 前鍔部と上記後鍔部とが上記板状体を挟持するようになっている樹脂製軸受にお いて、上記前鍔部が、上記筒部の周方向の相反する２箇所から反対向きに突き出 た略矩形の一対の突片によって形成されており、上記後鍔部が、上記筒部の周方 向の相反する２箇所から反対向きに突き出しかつ上記前鍔部よりも上記筒体の外 側へ突き出た略半円形の一対の突片によって形成されている、というものである 。 The bearing according to the present invention has a front flange portion and a rear flange portion projecting radially outward by being divided into one end and the other end in the axial direction of a cylindrical portion that supports the rotating shaft so as to be slidable and rotatable. A rear part of the front flange part and a front side of the rear flange part have a trace of a two-piece molding die which is separated and moved in the axial direction of the cylinder part, and is formed by the cylinder part and the front flange part. The cylindrical portion and the front flange portion are inserted into the mounting hole portion of the plate-like body having the mounting hole portion having a shape similar to the contour shape and rotated, so that the cylindrical portion is inserted into the mounting hole portion. In a resin bearing that is supported and the front flange and the rear flange sandwich the plate-like body, the front flange is located at two opposite positions in the circumferential direction of the cylindrical portion. And a pair of substantially rectangular projecting pieces projecting in opposite directions from each other. Are formed of substantially semi-circular pair of projecting pieces projecting outside the side of the cylinder than the protruding and the front flange portion opposite from where, is that.
【００１２】 このような軸受において、図４〜図６で説明した従来の軸受Ａとその基本的な 構成面で異なる点は、後鍔部の形状や大きさだけである。すなわち、この考案の 軸受においては、後鍔部が、筒部の周方向の相反する２箇所から反対向きに突き 出しかつ前鍔部よりも筒体の外側へ突き出た略半円形の一対の突片によって形成 されている。後鍔部がこのように形成されていると、その後鍔部の大きさが図４ 〜図６で説明した従来の軸受Ａよりも格段に大きくなり、そのために、軸受を板 状体に取り付けたときに、後鍔部と板状体との重なり箇所の面積が従来に比べて 格段に大きくなり、そのことが、板状体に対する軸受の取付安定性を高めること に役立つ。したがって、この軸受がプリンタのフィードローラシャフトや用紙排 出ローラシャフトなどの回転軸を支持することに用いられたとしても、回転軸の 回転時に軸受がぐらついてプリンタによる印刷精度に悪影響を及ぼすおそれがな くなる。In such a bearing, the only difference from the conventional bearing A described in FIGS. 4 to 6 in the basic configuration is the shape and size of the rear flange. That is, in the bearing of the present invention, the rear flange portion protrudes in opposite directions from two opposite locations in the circumferential direction of the cylinder portion and a pair of substantially semicircular protrusions protruding outside the cylinder body from the front flange portion. It is formed by pieces. When the rear flange portion is formed in this manner, the size of the rear flange portion is much larger than the conventional bearing A described with reference to FIGS. 4 to 6, and therefore, the bearing is mounted on a plate-like body. Occasionally, the area of the overlap between the rear flange and the plate-like body is much larger than in the past, which helps to increase the mounting stability of the bearing on the plate-like body. Therefore, even if this bearing is used to support a rotary shaft such as a feed roller shaft or a paper discharge roller shaft of a printer, the bearing may wobble when the rotary shaft rotates, which may adversely affect the printing accuracy of the printer. No longer.
【００１３】 なお、この考案の軸受は、前鍔部の後方側と上記後鍔部の前方側とに筒部の軸 方向に接離される二分割成形型の抜き跡を有するので、その軸受を二分割成形型 を用いて従来と同様の手法で成形することが可能である。[0013] The bearing of the present invention has a trace of a two-piece molding die that comes into contact with and separates in the axial direction of the cylindrical portion on the rear side of the front flange portion and the front side of the rear flange portion. It is possible to mold using a two-part mold in the same manner as before.
【００１４】 本考案の軸受においては、上記前鍔部を形成している略矩形の一対の上記突片 が対称形状であることが望ましい。このようになっていると、この軸受の成形に 用いる上記二分割成形型の製作が容易になる。In the bearing according to the present invention, it is preferable that the pair of substantially rectangular projecting pieces forming the front flange have a symmetric shape. This facilitates the production of the two-piece mold used for molding the bearing.
【００１５】 本考案の軸受においては、上記後鍔部を形成している略半円形の一対の上記突 片のうちの一方側に径外方向に突き出た板片が連設され、その板片の前面側に、 上記板状体に形成された位置決め用の凹部に嵌まり込む突起が設けられているこ とが望ましい。このようになっていると、板状体に軸受を取り付けるときに、軸 受が回転軸の回転方向の所定位置に確実に位置決めされるようになる。In the bearing of the present invention, a plate protruding radially outward is continuously provided on one side of the pair of substantially semicircular protrusions forming the rear flange, and the plate is provided. It is desirable that a protrusion is provided on the front side of the plate to fit into the positioning recess formed in the plate-like body. With this configuration, when the bearing is mounted on the plate-like body, the bearing is reliably positioned at a predetermined position in the rotation direction of the rotating shaft.
【００１６】 上記板片は、その基部が一方側の上記突片に形成された凹入状の欠除箇所の底 部に位置していることが望ましい。このようになっていると、後鍔部の外周から の板片の突出長さをそれほど長くしなくても、その板片の有効長さが長くなる。 そのため、その板片に備わっている樹脂に特有の弾力性が有効に発揮されて、取 付け時の軸受の回転操作を小さな力で楽に行うことができるようになる。It is preferable that the base of the plate is located at the bottom of a concave cutout formed in the protrusion on one side. With this configuration, the effective length of the plate piece is increased without increasing the length of the plate piece protruding from the outer periphery of the rear flange portion. Therefore, the elasticity peculiar to the resin provided on the plate piece is effectively exerted, and the rotating operation of the bearing at the time of mounting can be easily performed with a small force.
【００１７】 本考案の軸受においては、上記後鍔部の後面側に、指先で摘むことのできる板 片状の把手が設けられていることが望ましい。このようになっていると、把手を 指先で摘んで軸受を取り扱うことが可能になり、同時に、取付け時の軸受の回転 操作を、把手を指先で摘んで行うことが可能になって取付作業性が向上する。In the bearing of the present invention, it is preferable that a plate-like handle that can be picked with a fingertip is provided on the rear surface side of the rear flange. With this configuration, it is possible to handle the bearing by gripping the handle with the fingertip, and at the same time, it is possible to perform the rotation operation of the bearing during mounting by gripping the handle with the fingertip. Is improved.
【００１８】 また、上記把手が、上記筒部の筒孔を挟む両側において、略半円形の一対の上 記突片を径方向に横切る形で設けられていたり、上記把手が、上記筒部の軸線を 挟んで対称に形成されていたりしていると、取付け時の軸受の回転操作をいっそ う容易に行うことができるようになる。The handle may be provided on both sides of the cylindrical hole of the cylindrical portion so as to cross a pair of substantially semicircular protrusions in the radial direction, or the grip may be provided on the cylindrical portion. If the bearing is formed symmetrically with respect to the axis, rotation of the bearing at the time of mounting can be performed more easily.
【００１９】[0019]
図１は本考案に係る軸受Ａとシャーシなどの板状体８と回転軸１とを示した分 解斜視図、図２は軸受Ａの正面図、図３は板状体８に取り付けられた軸受Ａの正 面図である。図１に示された２本の回転軸１，１は、プリンタのフィードローラ シャフトＳ１と用紙排出ローラシャフトＳ２とである。 FIG. 1 is an exploded perspective view showing the bearing A, a plate-like body 8 such as a chassis, and the rotating shaft 1 according to the present invention, FIG. 2 is a front view of the bearing A, and FIG. FIG. 2 is a front view of the bearing A. The two rotating shafts 1 and 1 shown in FIG. 1 are a feed roller shaft S1 and a paper discharge roller shaft S2 of the printer.
【００２０】 軸受Ａは、二分割成形型を用いて従来と同様の手法で成形された樹脂製の一体 成形品である。この軸受Ａにおいて、回転軸１を摺動回転自在に支持する筒部２ の軸方向一端部と他端部とに振り分けて径外方向に向けて前鍔部３と後鍔部４と が突設されている点、前鍔部３が、筒部２の周方向の相反する２箇所から反対向 きに突き出しかつ上記筒部の直径長さＤよりも短い幅Ｗ１を有する略矩形の一対 の対称形状の突片３１，３１によって形成されている点、前鍔部３の後方側と後 鍔部４の前方側とに筒部２の軸方向に接離される上記二分割成形型（不図示）の 抜き跡Ｆ１，Ｆ２を有する点、などについては、図４〜図６で説明したところと 同様である。The bearing A is a resin integrally molded product molded by a method similar to the conventional method using a two-piece molding die. In this bearing A, the front flange portion 3 and the rear flange portion 4 project radially outward while being divided into one end and the other end in the axial direction of a cylindrical portion 2 that slidably supports the rotating shaft 1. The point that the front flange 3 protrudes from two opposite positions in the circumferential direction of the cylindrical portion 2 in opposite directions and has a pair of substantially rectangular shapes having a width W1 shorter than the diameter D of the cylindrical portion. The above-mentioned two-piece molding die (not shown) which is formed at the point formed by the symmetrical protruding pieces 31, 31 at the rear side of the front flange portion 3 and at the front side of the rear flange portion 4 in the axial direction of the cylindrical portion 2. The points having the traces F1 and F2, etc., are the same as those described with reference to FIGS.
【００２１】 また、この軸受Ａが取り付けられるシャーシなどの板状体８に、円形孔とその 円形孔の両側に張り出した矩形孔とを合わせた形の取付孔部８１が開設されてい る点、取付孔部８１の形状が軸受Ａの筒部２と前鍔部３とによって形作られた輪 郭形状に近似する形状になっている点、などについても図４や図６で説明したと ころと同様である。Further, a mounting hole 81 formed by combining a circular hole and rectangular holes protruding on both sides of the circular hole is formed in a plate-like body 8 such as a chassis to which the bearing A is mounted. The point that the shape of the mounting hole 81 is similar to the contour formed by the cylindrical portion 2 and the front flange 3 of the bearing A is also described with reference to FIGS. The same is true.
【００２２】 この軸受Ａにおいては、後鍔部４の形状及び大きさが、図４〜図６で説明した 従来の軸受Ａと異なっている。すなわち、図２に示したように、後鍔部４を形成 している一対の突片４１，４１は、筒部２の周方向の相反する２箇所から反対向 きに突き出しており、しかも、それらの突片４１，４１は、一対の突片３１，３ １によって形成された前鍔部３よりも筒体１の外側へ突き出た略半円形に形成さ れている。そして、一方側の突片４１の周方向の中央部に径外方向に突き出た板 片５が一体に連設されており、その板片５の前面側には円錐状の突起５１が設け られている。また、上記板片５は、その基部５３が突片４１に形成された凹入状 の欠除箇所４３の底部に位置している。そのため、突片４１の外周部からの板片 ５の突出長さが短い割りには、その板片５の有効長さ（板片５の基部５３から先 端までの長さ）が長くなっている。In this bearing A, the shape and size of the rear flange 4 are different from those of the conventional bearing A described with reference to FIGS. That is, as shown in FIG. 2, the pair of projecting pieces 41, 41 forming the rear flange portion 4 protrude from two opposite locations in the circumferential direction of the cylindrical portion 2 so as to face each other. The protruding pieces 41, 41 are formed in a substantially semicircular shape that protrudes outside the cylindrical body 1 beyond the front flange 3 formed by the pair of protruding pieces 31, 31. A plate 5 projecting radially outward is integrally connected to a central portion of the protrusion 41 on one side in the circumferential direction, and a conical projection 51 is provided on the front side of the plate 5. ing. In addition, the base plate 53 of the plate piece 5 is located at the bottom of the recessed cutout portion 43 formed in the protruding piece 41. For this reason, the effective length of the plate 5 (the length from the base 53 to the front end of the plate 5) becomes longer when the projection length of the plate 5 from the outer peripheral portion of the protrusion 41 is short. I have.
【００２３】 後鍔部４の後面側には、指先で摘むことのできる板片状の把手６が設けられて いる。この把手６は、筒部２の筒孔２１を挟む両側において、略半円形の一対の 上記突片４１，４１を径方向に横切る形で、筒部２の軸線を挟んで対称に設けら れている。On the rear side of the rear flange 4, there is provided a plate-shaped handle 6 that can be picked with a fingertip. The handle 6 is provided symmetrically with respect to the axis of the cylindrical portion 2 on both sides of the cylindrical hole 21 of the cylindrical portion 2 so as to cross the pair of substantially semicircular protrusions 41 in the radial direction. ing.
【００２４】 以上説明した軸受Ａにおいて、後鍔部４を形成している一対の突片４１，４１ が半円形に形成されており、しかも、それらの半円形の各突片４１は、前鍔部３ を形成している各突片３１よりも筒体２の外側へ突き出ているので、その後鍔部 ４の大きさが図４〜図６で説明した従来の軸受Ａの後鍔部４よりも格段に大きく なっている。それにもかかわらず、この軸受Ａは、前鍔部３の後方側と後鍔部４ の前方側とに二分割成形型の抜き跡Ｆ１，Ｆ２を有しているので、この軸受Ａは 、二分割成形型を用いて従来と同様の手法で成形することが可能である。In the bearing A described above, a pair of protrusions 41, 41 forming the rear flange portion 4 are formed in a semicircular shape, and each of the semicircular protrusions 41 is formed by a front flange. Since the protruding pieces 31 protrude outside the cylindrical body 2 from the protruding pieces 31 forming the portion 3, the size of the flange portion 4 is smaller than that of the rear flange portion 4 of the conventional bearing A described with reference to FIGS. Are also significantly larger. Nevertheless, since the bearing A has the traces F1 and F2 of the two-piece mold on the rear side of the front flange 3 and the front side of the rear flange 4, the bearing A has two It is possible to mold using a split mold in the same manner as in the past.
【００２５】 板状体８に備わっている取付孔部８１を利用してその板状体８に軸受Ａを取り 付けるときには、取付孔部８１に筒部２と前鍔部３とを挿入した後、図３の矢印 ａのように所定角度だけ軸受Ａを回転させる。このようにすると、筒部２が取付 孔部８１に支持されかつ前鍔部３と後鍔部４とが板状体８を挟持するようになり 、それによって軸受Ａが板状体８に取り付けられると共に、板片５に設けられて いる突起５１が板状体８側の位置決め用の凹部８２に嵌まり込み、それによって 軸受Ａが回転軸１の回転方向の所定位置に位置決めされる。この場合、板片５の 有効長さが長いので、その板片５に備わっている樹脂に特有の弾力性が有効に発 揮されるようになる。したがって、軸受Ａを回転させるときに板片５の突起５１ が板状体８と擦れ合っても、軸受Ａを回転操作するのに要する力が小さくて済む 。When the bearing A is mounted on the plate 8 using the mounting hole 81 provided in the plate 8, the cylindrical portion 2 and the front flange 3 are inserted into the mounting hole 81. The bearing A is rotated by a predetermined angle as indicated by an arrow a in FIG. In this way, the cylindrical portion 2 is supported by the mounting holes 81, and the front flange portion 3 and the rear flange portion 4 sandwich the plate-like body 8, whereby the bearing A is attached to the plate-like body 8. At the same time, the projection 51 provided on the plate piece 5 fits into the positioning concave portion 82 on the plate-shaped body 8, whereby the bearing A is positioned at a predetermined position in the rotation direction of the rotary shaft 1. In this case, since the effective length of the plate 5 is long, the elasticity peculiar to the resin provided in the plate 5 is effectively exerted. Therefore, even if the projections 51 of the plate piece 5 rub against the plate-like body 8 when rotating the bearing A, the force required for rotating the bearing A is small.
【００２６】 また、この軸受Ａは、把手６を指先で摘んで取り扱うことができ、しかも、取 付け時の軸受Ａの回転操作を、把手６を指先で摘んで行うことができる利点があ る。Further, the bearing A has an advantage that the handle 6 can be gripped and handled with a fingertip, and the rotation operation of the bearing A at the time of mounting can be performed by gripping the handle 6 with a fingertip. .
【００２７】 図３の取付状態では、後鍔部４と板状体８との重なり箇所の面積が従来に比べ て格段に大きくなる。そのため、板状体８に対する軸受Ａの取付安定性が向上し 、回転軸１の回転時に軸受Ａがぐらついてプリンタによる印刷精度に悪影響を及 ぼすおそれがない。In the mounting state shown in FIG. 3, the area of the overlapping portion between the rear flange portion 4 and the plate-like body 8 is much larger than in the related art. Therefore, the mounting stability of the bearing A with respect to the plate-shaped body 8 is improved, and there is no possibility that the bearing A is shaken when the rotating shaft 1 rotates, which adversely affects the printing accuracy of the printer.
【００２８】 以上説明した実施形態の軸受Ａは、プリンタのフィードローラシャフトＳ１や 用紙排出ローラシャフトＳ２などの回転軸１を支持することに用いられているけ れども、この軸受Ａは、他の種類の回転軸を支持することに用いることも可能で ある。The bearing A of the embodiment described above is used to support the rotating shaft 1 such as the feed roller shaft S1 and the paper discharge roller shaft S2 of the printer. It can also be used to support different types of rotating shafts.
【００２９】 なお、図１〜図３では、図４〜図６と同一又は相応する部分には同一符号を付 してある。In FIGS. 1 to 3, the same or corresponding parts as those in FIGS. 4 to 6 are denoted by the same reference numerals.
【００３０】[0030]
以上のように、本考案によれば、二分割成形型を用いて従来と同様の手法で成 形することができるものでありながら、シャーシなどの板状体に対する取付安定 性が向上する軸受を提供することが可能になる。したがって、本考案の軸受をプ リンタのフィードローラシャフトや用紙排出ローラシャフトなどを支持すること に用いることによって、そのプリンタの印刷精度を高めることが可能になる。ま た、取付作業性に優れ、取付け時の安全性が向上する軸受を提供することが可能 になる。 As described above, according to the present invention, a bearing that can be formed by a method similar to the conventional method using a two-piece forming die, but has improved mounting stability to a plate-like body such as a chassis. Can be provided. Therefore, by using the bearing of the present invention to support the feed roller shaft and the paper discharge roller shaft of the printer, the printing accuracy of the printer can be improved. Also, it is possible to provide a bearing that is excellent in mounting workability and improves safety during mounting.
【図１】本考案に係る軸受と板状体と回転軸とを示した
分解斜視図である。FIG. 1 is an exploded perspective view showing a bearing, a plate-like body, and a rotating shaft according to the present invention.
【図２】軸受の正面図である。FIG. 2 is a front view of the bearing.
【図３】板状体に取り付けられた軸受の正面図である。FIG. 3 is a front view of a bearing attached to a plate-like body.
【図４】従来の軸受と板状体と回転軸とを示した分解斜
視図である。FIG. 4 is an exploded perspective view showing a conventional bearing, a plate-like body, and a rotating shaft.
【図５】従来の軸受の正面図である。FIG. 5 is a front view of a conventional bearing.
【図６】板状体に取り付けられた従来の軸受の正面図で
ある。FIG. 6 is a front view of a conventional bearing attached to a plate-like body.
Ａ 軸受 Ｓ１ フィードローラシャフト Ｓ２ 用紙排出ローラシャフト １ 回転軸 ２ 筒部 ３ 前鍔部 ４ 後鍔部 ５ 板片 ６ 把手 ８ 板状体 ８１ 取付孔部 ３１，４１ 突片 ５１ 突起 ８２ 凹部 ４３ 欠除箇所 Ｄ 筒部の直径長さ Ｗ１ 突片の幅 Ｆ１，Ｆ２ 二分割成形型の抜き跡 Reference Signs List A bearing S1 feed roller shaft S2 paper discharge roller shaft 1 rotating shaft 2 cylindrical portion 3 front flange portion 4 rear flange portion 5 plate piece 6 handle 8 plate member 81 mounting holes 31, 41 protrusion 51 protrusion 82 recess 43 missing Location D Diameter length of cylindrical part W1 Width of protruding piece F1, F2 Trace of two-part mold
Claims (9)
軸方向一端部と他端部とに振り分けて径外方向に向けて
前鍔部と後鍔部とが突設され、上記前鍔部の後方側と上
記後鍔部の前方側とに上記筒部の軸方向に接離される二
分割成形型の抜き跡を有し、上記筒部と上記前鍔部とに
よって形作られた輪郭形状に近似する形状の取付孔部を
有する板状体の上記取付孔部に上記筒部と上記前鍔部と
を挿入して回転させることによって、上記筒部が上記取
付孔部に支持されかつ上記前鍔部と上記後鍔部とが上記
板状体を挟持するようになっている樹脂製軸受におい
て、 上記前鍔部が、上記筒部の周方向の相反する２箇所から
反対向きに突き出た略矩形の一対の突片によって形成さ
れており、上記後鍔部が、上記筒部の周方向の相反する
２箇所から反対向きに突き出しかつ上記前鍔部よりも上
記筒体の外側へ突き出た略半円形の一対の突片によって
形成されていることを特徴とする樹脂製軸受。1. A front flange portion and a rear flange portion projecting radially outward from one end and the other end in the axial direction of a cylindrical portion for supporting a rotating shaft so as to slide freely. On the rear side of the front flange portion and on the front side of the rear flange portion, there are punched traces of a two-piece molding die that is brought into contact with and separated in the axial direction of the cylindrical portion, and formed by the cylindrical portion and the front flange portion. By inserting and rotating the cylindrical portion and the front flange portion into the mounting hole portion of the plate-shaped body having the mounting hole portion having a shape similar to the contour, the cylindrical portion is supported by the mounting hole portion. And a resin bearing in which the front flange portion and the rear flange portion sandwich the plate-like body, wherein the front flange portion is opposed from two opposite locations in the circumferential direction of the cylindrical portion. The rear flange portion is formed by a pair of projecting substantially rectangular protrusions, and the rear flange portion is opposed from two opposite locations in the circumferential direction of the cylindrical portion. Resin bearing, characterized by being formed by a substantially semi-circular pair of projecting pieces projecting and than the front flange portion projecting outwardly of the cylinder to come.
の上記突片が対称形状である請求項１に記載した樹脂製
軸受。2. The resin bearing according to claim 1, wherein the pair of substantially rectangular projecting pieces forming the front flange have a symmetrical shape.
対の上記突片のうちの一方側に径外方向に突き出た板片
が連設され、その板片の前面側に、上記板状体に形成さ
れた位置決め用の凹部に嵌まり込む突起が設けられてい
る請求項１に記載した樹脂製軸受。3. A plate piece protruding radially outward is provided on one side of the pair of substantially semicircular protrusions forming the rear flange portion, and a front side of the plate piece is provided. The resin-made bearing according to claim 1, wherein a projection is provided which fits into a positioning recess formed in the plate-like body.
片に形成された凹入状の欠除箇所の底部に位置している
請求項３に記載した樹脂製軸受。4. The resin bearing according to claim 3, wherein the base of the plate piece is located at the bottom of a recessed cut-off portion formed on one of the projecting pieces.
のできる板片状の把手が設けられている請求項１ないし
請求項４のいずれかに記載した樹脂製軸受。5. The resin bearing according to claim 1, wherein a plate-shaped handle that can be picked with a fingertip is provided on a rear surface side of the rear flange portion.
において、略半円形の一対の上記突片を径方向に横切る
形で設けられている請求項５に記載した樹脂製軸受。6. The resin bearing according to claim 5, wherein the handle is provided on both sides of the cylindrical portion of the cylindrical portion so as to cross the pair of substantially semicircular projecting pieces in the radial direction.
称に形成されている請求項６に記載した樹脂製軸受。7. The resin bearing according to claim 6, wherein the handle is formed symmetrically with respect to an axis of the cylindrical portion.
ラシャフトである請求項１ないし請求項７のいずれかに
記載した樹脂製軸受。8. The resin bearing according to claim 1, wherein said rotating shaft is a feed roller shaft of a printer.
ラシャフトである請求項１ないし請求項７のいずれかに
記載した樹脂製軸受。9. The resin bearing according to claim 1, wherein said rotating shaft is a paper discharge roller shaft of a printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1998010286U JP3060471U (en) | 1998-12-25 | 1998-12-25 | Resin bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1998010286U JP3060471U (en) | 1998-12-25 | 1998-12-25 | Resin bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3060471U true JP3060471U (en) | 1999-08-31 |
Family
ID=43194287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1998010286U Expired - Lifetime JP3060471U (en) | 1998-12-25 | 1998-12-25 | Resin bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3060471U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217772A (en) * | 2009-03-18 | 2010-09-30 | Fuji Xerox Co Ltd | Fixing structure of support shaft and fixing device using the same, and image forming apparatus |
| JP2019011183A (en) * | 2017-06-30 | 2019-01-24 | ブラザー工業株式会社 | Conveyance device and image recording device |
-
1998
- 1998-12-25 JP JP1998010286U patent/JP3060471U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217772A (en) * | 2009-03-18 | 2010-09-30 | Fuji Xerox Co Ltd | Fixing structure of support shaft and fixing device using the same, and image forming apparatus |
| JP2019011183A (en) * | 2017-06-30 | 2019-01-24 | ブラザー工業株式会社 | Conveyance device and image recording device |
| JP7019979B2 (en) | 2017-06-30 | 2022-02-16 | ブラザー工業株式会社 | Transport device and image recording device |
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