JP2000234616A - Mounting structure of sleeve bearing - Google Patents
Mounting structure of sleeve bearingInfo
- Publication number
- JP2000234616A JP2000234616A JP11038877A JP3887799A JP2000234616A JP 2000234616 A JP2000234616 A JP 2000234616A JP 11038877 A JP11038877 A JP 11038877A JP 3887799 A JP3887799 A JP 3887799A JP 2000234616 A JP2000234616 A JP 2000234616A
- Authority
- JP
- Japan
- Prior art keywords
- carriage
- sleeve bearing
- guide shaft
- mounting structure
- sleeve
- 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.)
- Withdrawn
Links
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、スリーブ軸受けの
取り付け構造に関し、特に、プリンタのキャリッジにイ
ンサートされ、内周部がキャリッジ案内軸にその軸方向
の摺動を可能に挿通されているスリーブ軸受けの取り付
け構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeve bearing mounting structure, and more particularly, to a sleeve bearing which is inserted into a carriage of a printer and whose inner peripheral portion is inserted into a carriage guide shaft so as to be slidable in the axial direction. Mounting structure.
【０００２】[0002]
【従来の技術】スリーブ軸受けがプリンタのキャリッジ
にインサートされ、該スリーブ軸受けが、軸方向に延び
る複数条の摺動面部をその内周部に設けていて、キャリ
ッジ案内軸に挿通されてキャリッジを軸方向に摺動可能
にした構造においては、従来は、キャリッジ案内軸の周
面の最上位置に対向している摺動面部が、キャリッジ案
内軸の周方向に対して任意の部位をなして取り付けられ
ていた。2. Description of the Related Art A sleeve bearing is inserted into a carriage of a printer. The sleeve bearing has a plurality of sliding surfaces extending in an axial direction on an inner peripheral portion thereof. Conventionally, in a structure that is slidable in the direction, the sliding surface portion facing the uppermost position of the peripheral surface of the carriage guide shaft is attached at an arbitrary position with respect to the circumferential direction of the carriage guide shaft. I was
【０００３】[0003]
【発明が解決しようとする課題】上記のスリーブ軸受け
の取り付け構造にあっては、前記最上位置の摺動面部が
キャリッジ案内軸の中心を通る垂直線に対して非対称と
なっていると、キャリッジ案内軸の上部に作用するキャ
リッジの荷重中心が、摺動面部の中心よりも周方向に偏
った部位に対向しているので、摺動面部の片側寄りの狭
い部分でその荷重を受けることになり、長期に亘って使
用された場合に、摩耗が大きくなる。或いは軸受けの内
周面が該垂直線に対して非対称に摩耗して摺動面の中心
に対して両側相互の隙間が不均一になる。又、周方向に
偏って取り付けられて、各摺動面部相互の中間部を最上
部位に対向させているような場合には、この傾向が著し
くなり、いずれも印字品質が低下するという問題点があ
った。In the above-described mounting structure of the sleeve bearing, if the uppermost sliding surface portion is asymmetrical with respect to a vertical line passing through the center of the carriage guide shaft, the carriage guide is not provided. Since the load center of the carriage acting on the upper part of the shaft is opposed to a portion that is deviated in the circumferential direction from the center of the sliding surface portion, the load is received on a narrow portion near one side of the sliding surface portion, When used for a long period of time, wear increases. Alternatively, the inner peripheral surface of the bearing is worn asymmetrically with respect to the vertical line, and the gap between both sides becomes uneven with respect to the center of the sliding surface. Further, in the case where the parts are mounted to be skewed in the circumferential direction and the intermediate part between the sliding surface parts is opposed to the uppermost part, this tendency becomes remarkable, and the printing quality is deteriorated in any case. there were.
【０００４】本発明は、上記の問題点を解決するため
に、各スリーブ軸受けは、一つの摺動面部をキャリッジ
案内軸の周面の最上位置に対向させ、且つキャリッジの
荷重中心を該摺動面部の中心に対向させて、該摺動面部
に作用する荷重がキャリッジ案内軸の中心を通る垂直線
に対して両側に均等になるようにして、長期の使用に対
しても印字品質が良好に維持されるようにしたスリーブ
軸受けの取り付け構造を提供することを目的とする。According to the present invention, in order to solve the above-mentioned problems, each sleeve bearing has one sliding surface portion opposed to the uppermost position of the peripheral surface of the carriage guide shaft, and the center of load of the carriage slides. Facing the center of the surface, the load acting on the sliding surface is made equal on both sides with respect to a vertical line passing through the center of the carriage guide shaft, so that print quality is excellent even for long-term use. An object of the present invention is to provide a mounting structure of a sleeve bearing which is maintained.
【０００５】[0005]
【課題を解決するための手段】上記目的達成のために請
求項１記載の発明は、一対のスリーブ軸受けが、プリン
タのキャリッジにインサートされ、各スリーブ軸受けの
軸方向に延びる複数条の摺動面部をその内周部に形成し
ていて、キャリッジ案内軸に該摺動面部が摺接されて挿
通され、キャリッジを軸方向に摺動可能にしているスリ
ーブ軸受けの取り付け構造において、各スリーブ軸受け
は、一つの前記摺動面部が、キャリッジ案内軸の周面の
最上位置に対向され且つキャリッジ案内軸の中心を通る
垂直線に対して対称となるようにして、インサートの取
り付け姿勢を規制した。よって、該摺動面部の中央部で
キャリッジの荷重を受ける。According to the first aspect of the present invention, a pair of sleeve bearings are inserted into a carriage of a printer, and a plurality of sliding surface portions extending in the axial direction of each sleeve bearing. Is formed on the inner peripheral portion thereof, and the sliding surface portion is slidably contacted with the carriage guide shaft to be inserted therethrough.In the mounting structure of the sleeve bearing which enables the carriage to slide in the axial direction, each sleeve bearing is The mounting posture of the insert is regulated such that one of the sliding surface portions is opposed to the uppermost position of the peripheral surface of the carriage guide shaft and is symmetrical with respect to a vertical line passing through the center of the carriage guide shaft. Therefore, the load of the carriage is received at the center of the sliding surface.
【０００６】請求項２記載の発明は、前記キャリッジと
スリーブ軸受けとの接合面の一方に溝部を備え他方に該
溝部と嵌合する突起部を備え、該各溝部と突起部とを互
いに係合させて前記インサートに関わる取り付け姿勢を
規制した。よって、請求項１における姿勢と荷重条件が
得られて、同様に作用する。According to a second aspect of the present invention, one of the joining surfaces of the carriage and the sleeve bearing is provided with a groove, and the other is provided with a protrusion which fits into the groove, and the grooves and the protrusion are engaged with each other. Thus, the mounting posture related to the insert was regulated. Therefore, the posture and the load condition in claim 1 are obtained, and the same operation is performed.
【０００７】[0007]
【発明の実施の形態】以下、本発明の好ましい実施の形
態について添付図面を参照しつつ説明する。図１は本発
明の実施の形態例としてのスリーブ軸受けの取り付け構
造を示す斜視図、図２は図１に示すスリーブ軸受けとそ
の取り付け構造を示す分解斜視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a mounting structure of a sleeve bearing as an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing the sleeve bearing shown in FIG. 1 and its mounting structure.
【０００８】図１において、１は印字用のヘッドを備え
たキャリッジで、フレキシブルコード２によってプリン
タ本体（図示せず）と接続され、キャリッジ案内軸３に
その軸方向の摺動を可能にして取り付けられている。４
はその取り付け部を構成しているスリーブ軸受けで、例
えば銅・鉄系の焼結合金の含油メタルであって、キャリ
ッジ１の両側部に対をなして備えている（一方のみ図
示）。In FIG. 1, reference numeral 1 denotes a carriage provided with a print head, which is connected to a printer main body (not shown) by a flexible cord 2 and attached to a carriage guide shaft 3 so as to be able to slide in the axial direction. Have been. 4
Reference numeral denotes a sleeve bearing constituting the mounting portion, which is, for example, an oil-impregnated metal of a copper / iron based sintered alloy, and is provided in pairs on both sides of the carriage 1 (only one is shown).
【０００９】図２をも参照し、スリーブ軸受け４は、キ
ャリッジ１における一方の側部に備えたスリーブ軸受け
４Ａと、他方の側部に備えたスリーブ軸受け４Ｂとが互
いに同一の構造であり、それぞれ、胴部５とフランジ部
６とよりなる。そして内周部には、キャリッジ案内軸３
の軸方向に延びる複数条の摺動面部７が形成されてい
て、各摺動面部７の組による内周面にてキャリッジ案内
軸３と滑合させて、挿通されている。このように複数条
に分割してその相互間に逃げを設けて、キャリッジ案内
軸３との接触面積を少なくして摩擦力を軽減している。Referring also to FIG. 2, the sleeve bearing 4 has the same structure as a sleeve bearing 4A provided on one side of the carriage 1 and a sleeve bearing 4B provided on the other side of the carriage 1. , A body 5 and a flange 6. The carriage guide shaft 3 is provided on the inner peripheral portion.
A plurality of sliding surface portions 7 extending in the axial direction are formed, and the inner surfaces of the sliding surface portions 7 are slidably inserted into the carriage guide shaft 3 on the inner peripheral surface. In this manner, the sheet is divided into a plurality of sections and a clearance is provided between the sections to reduce the contact area with the carriage guide shaft 3 to reduce the frictional force.
【００１０】フランジ部６の外周部には一つの突起部８
を備え、本実施形態例では、キャリッジ案内軸３のラジ
アル方向の一中心線Ｃに、摺動面部７における周方向の
中心と、該突起部８の周方向中心とを一致させている。One projection 8 is provided on the outer periphery of the flange 6.
In the present embodiment, the center in the circumferential direction of the sliding surface 7 and the center in the circumferential direction of the projection 8 coincide with one center line C in the radial direction of the carriage guide shaft 3.
【００１１】キャリッジ１はその枠部材全体が合成樹脂
材料よりなり、その両側部に軸受け取り付け用ボス部９
を設け、該軸受け取り付け用ボス部９には、胴部５の外
周を嵌合させている貫通穴１０と、その両端部にてフラ
ンジ部６の外周を勘合させているフランジ係合部１１を
設けていて（いずれも一方のみ図示）、この場合、スリ
ーブ軸受け４Ａ，４Ｂの各側面をキャリッジ１の各側面
とそれぞれほぼ一致させて取り付けている（図１では便
宜上、スリーブ軸受け４の側面をキャリッジ１の側面よ
りも突き出させて記載している）。The entire frame member of the carriage 1 is made of a synthetic resin material, and bearing mounting bosses 9 are provided on both sides thereof.
The bearing mounting boss 9 is provided with a through hole 10 in which the outer periphery of the body 5 is fitted, and a flange engaging portion 11 in which the outer periphery of the flange 6 is fitted at both ends. In this case, only the side surfaces of the sleeve bearings 4A and 4B are attached so as to substantially coincide with the respective side surfaces of the carriage 1 (for convenience, in FIG. 1, the side surface of the sleeve bearing 4 is attached to the carriage 1). 1 protruding from the side).
【００１２】そしてフランジ係合部１１には、キャリッ
ジ案内軸３の中心を通る垂直線（前記のラジアル方向の
一中心線）Ｃと一致させてその最上部に溝部１２を形成
していて、これに突起部８を嵌合させている。このよう
にして摺動面部７の中心を垂直線Ｃと一致させて取り付
けられて周方向取り付け位置を規制している。よって摺
動面部７は、キャリッジ１がキャリッジ案内軸３に取り
付けられている姿勢において、垂直線Ｃに対して対称と
なっており、キャリッジ１の荷重中心をその面の中心に
受けている。A groove 12 is formed at the uppermost portion of the flange engaging portion 11 so as to coincide with a vertical line C passing through the center of the carriage guide shaft 3 (the center line in the radial direction). The projection 8 is fitted to the. In this way, the sliding surface 7 is mounted so that the center thereof coincides with the vertical line C, and the circumferential mounting position is regulated. Therefore, the sliding surface portion 7 is symmetrical with respect to the vertical line C when the carriage 1 is attached to the carriage guide shaft 3, and receives the load center of the carriage 1 at the center of the surface.
【００１３】以上説明したように、キャリッジ案内軸１
の各スリーブ軸受け４Ａ，４Ｂは、キャリッジ１の荷重
中心を摺動面部７の中心に対向させているので、摺動面
部の中央部分でその荷重を受けることになり、長期に亘
って使用された場合にも摩耗が少ない。そして摺動面部
７に作用する荷重がキャリッジ案内軸３の中心を通る垂
直線Ｃに対して両側に均等になり、垂直線Ｃに対して両
側が互いに均等に摩耗するので長期の使用に対してもキ
ャリッジが軸中心に振れるようなこともなく、印字品質
が良好に維持される。As described above, the carriage guide shaft 1
Since the center of load of the carriage 1 is opposed to the center of the sliding surface portion 7, each of the sleeve bearings 4A and 4B receives the load at the central portion of the sliding surface portion, and has been used for a long time. Less wear in case. The load acting on the sliding surface portion 7 is equal on both sides with respect to a vertical line C passing through the center of the carriage guide shaft 3, and both sides are equally worn on the vertical line C. Also, the carriage does not swing around the center of the shaft, and the printing quality is maintained satisfactorily.
【００１４】以上、発明者によってなされた発明を実施
形態に基づいて、具体的に説明したが、本発明は上記実
施形態に限定されるものではなく、その要旨を逸脱しな
い範囲で種々変形可能であるということは言うまでもな
い。例えば、実施形態ではフランジ部６の外周部に突起
部８を設け、フランジ係合部１１側に溝部１２を設ける
ことにより、その嵌合で位置規制を行っているが、それ
らの設置状態を逆関係に備えてもよい。即ち、フランジ
部６の外周部に溝部１２、フランジ係合部１１側に突起
部８を設けても本発明が達成できるということである。
また更に、胴部５の外周と、ボス部9の貫通穴１０と
に、上記と同様に互いに勘合する突起部8又は溝部１２
を備えてもよい。As described above, the invention made by the inventor has been specifically described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and can be variously modified without departing from the gist thereof. Needless to say, there is. For example, in the embodiment, the protrusion 8 is provided on the outer peripheral portion of the flange portion 6 and the groove portion 12 is provided on the flange engaging portion 11 side, thereby regulating the position by the fitting. You may be prepared for a relationship. That is, the present invention can be achieved even when the groove 12 is provided on the outer peripheral portion of the flange portion 6 and the protrusion 8 is provided on the flange engaging portion 11 side.
Further, the protrusion 8 or the groove 12 which fits into the outer periphery of the body 5 and the through hole 10 of the boss 9 in the same manner as described above.
May be provided.
【００１５】[0015]
【発明の効果】請求項１の発明によれば、対をなした各
スリーブ軸受けの内周に形成された摺動面部の一つを、
キャリッジ案内軸の周面の最上位置に対向させ且つキャ
リッジ案内軸の中心を通る垂直線に対して対称となるよ
うな姿勢にして、キャリッジにインサートしたので、キ
ャリッジの荷重を当該摺動面部中心に対して両側相互に
均等に受ける。よって該摺動面部の摩耗が少なく、そし
て該両側相互の摩耗も均等になり、印字品質が良好に維
持される。According to the first aspect of the present invention, one of the sliding surface portions formed on the inner periphery of each pair of sleeve bearings is
The carriage was inserted into the carriage so as to face the uppermost position of the peripheral surface of the carriage guide shaft and to be symmetrical with respect to a vertical line passing through the center of the carriage guide shaft. On both sides, receive equally. Therefore, the abrasion of the sliding surface portion is small, and the abrasion of the both sides is uniform, so that good printing quality is maintained.
【００１６】請求項２記載の発明によれば、キャリッジ
とスリーブ軸受けとの接合面の一方に溝部を備え他方に
該溝部と嵌合する突起部を備えて該各溝部と突起部とを
互いに係合させて、インサートに関わる取り付け姿勢を
規制したので、請求項１における摩耗条件が得られる。According to the second aspect of the present invention, one of the joining surfaces of the carriage and the sleeve bearing is provided with a groove, and the other is provided with a protrusion fitted with the groove, and the grooves and the protrusion are engaged with each other. In addition, since the mounting posture relating to the insert is regulated, the wear condition according to claim 1 can be obtained.
【図１】本発明の実施の形態例としてのスリーブ軸受け
の取り付け構造を示す斜視図である。FIG. 1 is a perspective view showing a mounting structure of a sleeve bearing as an embodiment of the present invention.
【図２】図１に示すスリーブ軸受けとその取り付け構造
を示す分解斜視図である。FIG. 2 is an exploded perspective view showing the sleeve bearing shown in FIG. 1 and a mounting structure thereof.
１ キャリッジ ３ キャリッジ案内軸 ４ スリーブ軸受け ４Ａ スリーブ軸受け ４Ｂ スリーブ軸受け ７ 摺動面部 ８ 突起部 １２ 溝部 Ｃ 中心線（キャリッジ案内軸の中心を通る垂直線） DESCRIPTION OF SYMBOLS 1 Carriage 3 Carriage guide shaft 4 Sleeve bearing 4A Sleeve bearing 4B Sleeve bearing 7 Sliding surface 8 Projection 12 Groove C Center line (vertical line passing through the center of the carriage guide shaft)
Claims (2)
ャリッジにインサートされ、各スリーブ軸受けの軸方向
に延びる複数条の摺動面部をその内周部に形成してい
て、キャリッジ案内軸に該摺動面部が摺接されて挿通さ
れ、キャリッジを軸方向に摺動可能にしているスリーブ
軸受けの取り付け構造において、 各スリーブ軸受けは、一つの前記摺動面部が、キャリッ
ジ案内軸の周面の最上位置に対向され且つキャリッジ案
内軸の中心を通る垂直線に対して対称となる取り付け姿
勢をなして、前記インサートされている、 ことを特徴とするスリーブ軸受けの取り付け構造。1. A pair of sleeve bearings are inserted into a carriage of a printer, and a plurality of sliding surfaces extending in the axial direction of each sleeve bearing are formed on an inner peripheral portion thereof. In the mounting structure of the sleeve bearings in which the surface portions are slid and contacted and the carriage is slidable in the axial direction, each sleeve bearing is such that one of the sliding surface portions is located at the uppermost position of the peripheral surface of the carriage guide shaft. The mounting structure of a sleeve bearing, wherein the mounting structure is mounted so as to be symmetrical with respect to a vertical line that is opposed to and passes through the center of the carriage guide shaft.
合面の一方に溝部を備え他方に該溝部と嵌合する突起部
を備え、該各溝部と突起部とが互いに係合されて前記イ
ンサートに関わる取り付け姿勢が規制されている、 ことを特徴とする請求項１記載のスリーブ軸受けの取り
付け構造。2. A groove is provided on one of the joining surfaces of the carriage and the sleeve bearing, and the other is provided with a protrusion which fits into the groove, and the groove and the protrusion are engaged with each other and are involved in the insert. The mounting structure of the sleeve bearing according to claim 1, wherein a mounting posture is regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11038877A JP2000234616A (en) | 1999-02-17 | 1999-02-17 | Mounting structure of sleeve bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11038877A JP2000234616A (en) | 1999-02-17 | 1999-02-17 | Mounting structure of sleeve bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000234616A true JP2000234616A (en) | 2000-08-29 |
Family
ID=12537461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11038877A Withdrawn JP2000234616A (en) | 1999-02-17 | 1999-02-17 | Mounting structure of sleeve bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000234616A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6524021B2 (en) * | 2000-12-05 | 2003-02-25 | Hewlett-Packard Company | Multiple orientation image forming device and carriage for use with same |
-
1999
- 1999-02-17 JP JP11038877A patent/JP2000234616A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6524021B2 (en) * | 2000-12-05 | 2003-02-25 | Hewlett-Packard Company | Multiple orientation image forming device and carriage for use with same |
| US6682234B2 (en) | 2000-12-05 | 2004-01-27 | Hewlett-Packard Development Company, L.P. | Multiple orientation image forming device and carriage for use with same |
| US6935796B2 (en) | 2000-12-05 | 2005-08-30 | Hewlett-Packard Development Company, L.P. | Multiple orientation image forming device and carriage for use with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20060509 |