JPH059533Y2 - - Google Patents
Info
- Publication number
- JPH059533Y2 JPH059533Y2 JP1987102880U JP10288087U JPH059533Y2 JP H059533 Y2 JPH059533 Y2 JP H059533Y2 JP 1987102880 U JP1987102880 U JP 1987102880U JP 10288087 U JP10288087 U JP 10288087U JP H059533 Y2 JPH059533 Y2 JP H059533Y2
- Authority
- JP
- Japan
- Prior art keywords
- seal plate
- locking groove
- peripheral end
- outer peripheral
- ring
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 28
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7846—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with a gap between the annular disc and the inner race
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/726—Sealings with means to vent the interior of the bearing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、ベアリングに使用するプラスチツク
製シール板の改良に係り、シール板の嵌着が容易
にできると共に、ベアリングの外輪に形成したシ
ール板係止溝の加工精度等にばらつきがあつて
も、使用中に於けるシール板のがたつきや脱落を
完全に防止できるようにしたベアリング用シール
板に関するものである。[Detailed description of the invention] (Field of industrial application) The present invention relates to the improvement of a plastic seal plate used in bearings. This invention relates to a bearing seal plate that can completely prevent the seal plate from rattling or falling off during use, even if there are variations in the machining accuracy of locking grooves.
（従来の技術）
事務用機器や電子計算機等の分野に於いては、
製品の小形化に伴なつて使用するベアリングも
益々小形化される傾向にあり、外径が３〜10mm位
いの所謂シール型ミニチユアベアリングが数多く
利用されている。(Prior art) In the fields of office equipment and electronic computers,
As products become smaller, the bearings used also tend to become smaller, and many so-called sealed miniature bearings with an outer diameter of about 3 to 10 mm are in use.
ところで、従前の小形シールベアリングに於い
ては、通常第４図に示す如く、ベアリング外輪１
の内周面外端部に略逆Ｖ字型のシール板係止溝２
を形成し、該係止溝２内へ、外周端部３ａを台形
状に形成したプラスチツク製のシール板３を嵌着
したり（実開昭59−17323号）、或いは第５図に示
す如く、プラスチツク製シール板３の外周端部３
ａの内面側３ｂに、係止溝２の内側面２ａへ当合
する***部３ｃを形成し、該***部３ｃの弾性を
利用して、シール板の外周端部３ａを係止溝２内
へ嵌着する方法（実開昭60−12719号）が実用化
されている。 By the way, in conventional small sealed bearings, as shown in Fig. 4, the bearing outer ring 1
Approximately inverted V-shaped seal plate locking groove 2 at the outer end of the inner peripheral surface of
A plastic sealing plate 3 having a trapezoidal outer peripheral end 3a is fitted into the locking groove 2 (Utility Model Application No. 59-17323), or as shown in FIG. , the outer peripheral end 3 of the plastic sealing plate 3
A protrusion 3c that abuts the inner surface 2a of the locking groove 2 is formed on the inner surface 3b of the seal plate, and the elasticity of the protrusion 3c is used to push the outer peripheral end 3a of the seal plate into the locking groove 2. A method of fitting the wire (Utility Model Application No. 60-12719) has been put into practical use.
しかし、前者（第４図）のシール板嵌着方法に
あつては、係止溝２やシール板外周端部３ａの加
工に相当の高精度（許容誤差溝側±1/100以下、
封板側±5/1000以下）を必要とし、加工精度が悪
い場合には、ベアリングの使用中にシール板のが
たつきや脱落が簡単に生ずるという問題がある。 However, in the former seal plate fitting method (Fig. 4), the locking groove 2 and the seal plate outer peripheral end 3a are processed with considerable precision (tolerance of ±1/100 or less on the groove side,
(±5/1000 or less) on the sealing plate side, and if the machining accuracy is poor, there is a problem that the sealing plate easily rattles or falls off while the bearing is in use.
又、後者（第５図）の嵌着方法にあつては、係
止溝２の内側面２ａへシール板３のリング状の隆
起部３ｃの先端が垂直状に対向しているため、シ
ール板３の挿着時の押圧力がリング状の***部３
ｃの背面部へ均等にかからないと、先きに係止溝
２の内側面２ａへ接当した***部３ｃの先端部が
大きな圧縮歪みを受けることになり、その結果、
シール板３の嵌着力が相対的に低下して、使用中
にシール板３のがたつきを生ずるという問題があ
る。 In addition, in the latter fitting method (FIG. 5), since the tip of the ring-shaped protuberance 3c of the seal plate 3 vertically faces the inner surface 2a of the locking groove 2, the seal plate The pressing force when inserting 3 is the ring-shaped raised part 3
If it is not applied evenly to the back surface of the locking groove 2, the tip of the protruding portion 3c that came into contact with the inner surface 2a of the locking groove 2 will receive a large compressive strain, and as a result,
There is a problem in that the fitting force of the seal plate 3 is relatively reduced, causing the seal plate 3 to wobble during use.
又、***部３ｃを形成した部分のシール板の厚
みが大きいため、シール板３の挿着時にその外周
端部３ａに大きな圧縮応力がかかつても、外周端
部３ａ自体は殆んど歪まずに***部３ｃのみが大
きく歪むことになる。即ち、係止溝２内へシール
板３を嵌着した際の圧縮応力による歪みが、外周
端部３ａの***部３ｃの先端にのみ集中すること
になり、その結果、シール板３の挿着時に***部
３ｃの背面部へ均等な押圧力が加えられたとして
も、その押圧力が僅かでも設定値以上になると、
圧縮歪みによつて前記***部３ｃの先端部の弾性
力が狂うことになり、使用中のがたつきや脱落が
多発することになる。 In addition, since the thickness of the seal plate is large at the portion where the raised portion 3c is formed, even if a large compressive stress is applied to the outer peripheral end 3a when the seal plate 3 is inserted, the outer peripheral end 3a itself will hardly be distorted. Only the raised portion 3c will be greatly distorted. That is, the strain due to compressive stress when the seal plate 3 is fitted into the locking groove 2 is concentrated only at the tip of the raised portion 3c of the outer peripheral end 3a, and as a result, the insertion of the seal plate 3 becomes difficult. Even if a uniform pressing force is sometimes applied to the back surface of the raised portion 3c, if the pressing force exceeds the set value even by a small amount,
Compressive strain causes the elastic force of the tip of the raised portion 3c to become distorted, resulting in frequent rattling and falling off during use.
（考案が解決しようとする問題点）
本考案は、従前のベアリング用シール板に於け
る上述の如き問題、即ちリング状の***部３ｃ
が、シール板３の外周端部の内側面に形成されて
おり、シール板の挿着時に押圧力が***部３ｃへ
均等にかからないと、***部３ｃの歪み量に局部
的なばらつきが生じ、***部３ｃの弾性力が弱ま
つて使用中にシール板ががたつき易いこと、シ
ール板挿着時の押圧力が***部３ｃの背部へ均等
にかかつても、***部３ｃを形成した部分のシー
ル板の厚みが大きくて弾性力に欠けるため、押圧
力が少し過大になると***部３ｃのみが大きく歪
んでしまい、シール板３の挿着力が低下して使用
中にがたつきを生じること、等の問題を解決せん
とするものであり、***部３ｃの形成位置をシー
ル板外周端部の外側面とし、且つ***部３ｃを点
状の***部としてこれを複数分散して設けると共
に、***部３ｃを形成した部分のシール板の厚さ
を薄くし、***部３ｃを形成した部分のシール板
自体に歪の吸収能力を保持させることにより、係
止溝への嵌着が容易で、且つ嵌着後にがたつきを
生じることが少なく、しかも、係止溝等の加工精
度に多少のばらつきがあつても、使用中にシール
板のがたつきや脱落を生じないようにしたベアリ
ング用シール板を提供するものである。(Problems to be solved by the invention) The present invention solves the above-mentioned problems in the conventional bearing seal plate, namely, the ring-shaped raised portion 3c.
is formed on the inner surface of the outer peripheral end of the seal plate 3, and if the pressing force is not evenly applied to the raised portion 3c when the seal plate is inserted, local variations in the amount of distortion of the raised portion 3c will occur. The elastic force of the raised portion 3c is weakened and the seal plate is likely to wobble during use, and even if the pressing force when inserting the seal plate is evenly applied to the back of the raised portion 3c, the portion where the raised portion 3c is formed Since the seal plate is thick and lacks elasticity, if the pressing force becomes slightly excessive, only the raised portion 3c will be greatly distorted, reducing the insertion force of the seal plate 3 and causing wobbling during use. In order to solve the problems such as, the formation position of the raised part 3c is the outer surface of the outer peripheral end of the seal plate, and the raised part 3c is provided as a plurality of dot-like raised parts, and By reducing the thickness of the seal plate in the portion where the raised portion 3c is formed and allowing the seal plate itself in the portion where the raised portion 3c is formed to maintain strain absorption ability, it is easy to fit into the locking groove. For bearings that do not cause rattling after fitting, and also prevent the seal plate from rattling or falling off during use even if there are slight variations in the machining accuracy of the locking groove etc. The present invention provides a seal plate.
（問題点を解決するための手段）
本考案は、外輪の内周面外端部に設けたシール
板係止溝内へ、その外周端部を嵌合すると共に、
内輪とその内周端部との間に僅かな間〓を設ける
ようにした非接触型のプラスチツク製のベアリン
グ用シール板に於いて、シール板の外周端部３ａ
の内面側に適宜の幅を有する複数の窪部７を形成
し、前記外周端部３ａに複数の薄肉部８を形成す
ると共に、該薄肉部８の外側面に係止溝２内への
嵌合時に、前記係止溝２の外側面２ｃに当接して
弾性変形をする突起体９を形成したことを考案の
基本構成とするものである。(Means for Solving the Problems) The present invention involves fitting the outer peripheral end of the outer ring into the seal plate locking groove provided at the outer end of the inner peripheral surface of the outer ring, and
In a non-contact type plastic bearing seal plate in which a slight space is provided between the inner ring and its inner peripheral end, the outer peripheral end 3a of the seal plate
A plurality of recesses 7 having an appropriate width are formed on the inner surface of the holder, and a plurality of thin parts 8 are formed on the outer peripheral end 3a. The basic structure of the invention is that a protrusion 9 is formed which comes into contact with the outer surface 2c of the locking groove 2 and is elastically deformed when the locking groove 2 is engaged.
（作用）
シール板３の外周端部３ａを外輪１のシール板
係止溝２内へ嵌着するに際して、外方よりこれに
押圧力を加えると、前記外周端部３ａが内側へ歪
んで係止溝２内へ嵌合する。(Function) When fitting the outer peripheral end 3a of the seal plate 3 into the seal plate locking groove 2 of the outer ring 1, if a pressing force is applied from the outside, the outer peripheral end 3a will be distorted inward and will not engage. Fits into the stop groove 2.
シール板外周端部３ａの内側面３ｂは、係止溝
２の内側面へ当接してその押込み量が規制され
る。また、外周端部３ａの外側面３ｄに形成した
突起体９は、係止溝２の外側面２ｃへ当接し、突
起体９自体の有する弾力性と、突起体９が形成さ
れている薄肉部８自体の弾力性とが相乗して係止
溝外側面２ｃへ作用し、両弾性力によつてシール
板３が係止溝２内へ強固に固着される。 The inner surface 3b of the outer circumferential end 3a of the seal plate abuts against the inner surface of the locking groove 2, and the amount of push-in is regulated. Further, the protrusion 9 formed on the outer surface 3d of the outer peripheral end 3a comes into contact with the outer surface 2c of the locking groove 2, and the elasticity of the protrusion 9 itself and the thin wall portion on which the protrusion 9 is formed make contact with the outer surface 2c of the locking groove 2. The elasticity of the seal plate 8 itself works together with the outer surface 2c of the locking groove, and the seal plate 3 is firmly fixed in the locking groove 2 by both elastic forces.
（実施例）
以下、第１図乃至第３図に基づいて本考案の実
施例を説明する。(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.
第１図は、第１実施例に係るシール板の斜面図
であり、第２図は、ベアリング外輪の係止溝内へ
嵌着したシール板の部分拡大縦断面図である。 FIG. 1 is a perspective view of the seal plate according to the first embodiment, and FIG. 2 is a partially enlarged vertical sectional view of the seal plate fitted into the locking groove of the bearing outer ring.
図に於いて１は外輪、２は外輪１の内周面外端
に形成したシール板係止溝、３はベリアング用シ
ール板、４は内輪、５はボール、６はリテーナで
ある。 In the figure, 1 is an outer ring, 2 is a seal plate locking groove formed at the outer end of the inner peripheral surface of the outer ring 1, 3 is a seal plate for bellying, 4 is an inner ring, 5 is a ball, and 6 is a retainer.
前記外輪１の直径は３〜60mm程度であり、直径
が３mmの場合には、外輪１の肉厚0.4〜0.5mm，係
止溝２の深さ0.15〜0.2mm，封板３の肉厚0.2〜0.3
mmに夫々選定されている。 The diameter of the outer ring 1 is about 3 to 60 mm, and when the diameter is 3 mm, the outer ring 1 has a wall thickness of 0.4 to 0.5 mm, the locking groove 2 has a depth of 0.15 to 0.2 mm, and the sealing plate 3 has a wall thickness of 0.2 mm. ~0.3
mm.
前記外輪１の内周面外端部に形成されたシール
板係止溝２は、第２図に示す如く略逆字形を呈
しており、ほぼ垂直状の内側面２ａと平坦な底面
２ｂと外開き状に傾斜した外側面２ｃと、これに
連続する外側の水平面２ｄとから構成されてい
る。尚、係止溝２の深さは、外輪の外径が３mmの
場合、0.15mmに選定されており、且つその加工精
度は±1/100mm以下に設定されている。 The seal plate locking groove 2 formed at the outer end of the inner circumferential surface of the outer ring 1 has a substantially inverted shape as shown in FIG. It is composed of an open-slanted outer surface 2c and an outer horizontal surface 2d continuous with the outer surface 2c. The depth of the locking groove 2 is selected to be 0.15 mm when the outer diameter of the outer ring is 3 mm, and the processing accuracy is set to ±1/100 mm or less.
前記シール３は、硬質ナイロンやポリアセテー
ト等の耐熱・耐摩耗に優れ、しかも適宜の弾性力
を有するエンジニヤリングプラスチツクの一体成
形によつて環状に成形されており、その外周端部
３ａは、内側の垂直面３b′と内側の傾斜面３b″、
外側の傾斜面３d′及び外側の水平面３d″とから成
るほぼ逆Ｖ字形に形成されている。 The seal 3 is formed into an annular shape by integral molding of engineering plastic, such as hard nylon or polyacetate, which has excellent heat resistance and wear resistance, and has appropriate elasticity. vertical surface 3b' and inner inclined surface 3b'',
It is formed into a substantially inverted V-shape consisting of an outer inclined surface 3d' and an outer horizontal surface 3d''.
また、前記シール板３の内側の傾斜面３b″に
は、適宜の幅を有する複数（本実施例の場合は４
個）の窪部７が設けられており、該窪部７によつ
て、第２図に示す如く、シール板３の外周端部３
ａに、弾性変形が比較的容易な厚さ50〜80μm位
いの複数薄肉部８が形成されると共に、前記薄肉
部８の外側面、即ちシール板３の外側傾斜面３
d′の先端部には、上方へ突出した断面三角状の突
起体９が形成されている。 In addition, on the inner inclined surface 3b'' of the seal plate 3, a plurality of (in this embodiment, four
As shown in FIG.
A plurality of thin parts 8 having a thickness of about 50 to 80 μm that are relatively easy to elastically deform are formed on the outer surface of the thin parts 8, that is, the outer inclined surface 3 of the seal plate 3.
A projection 9 having a triangular cross section and projecting upward is formed at the tip of d'.
尚、当該突起体９の形状は如何なる形状であつ
てもよく、円柱状や角柱状であつてもよい。本実
施例に於いては、高さ10〜20μmの円錐柱状の突
起体９が形成されている。 Note that the shape of the protrusion 9 may be any shape, and may be cylindrical or prismatic. In this embodiment, a conical columnar protrusion 9 having a height of 10 to 20 μm is formed.
一方、シール板３の内周端部３ｅは、第２図に
示す如く、断面形状が階段状になるように形成さ
れており、内輪４との間には僅かな間〓Ｇ，
G′が形成されている。 On the other hand, as shown in FIG. 2, the inner circumferential end 3e of the seal plate 3 is formed to have a stepped cross-sectional shape, and there is a slight gap between it and the inner ring 4.
G′ is formed.
当該シール板３の挿着に際しては、先ずシール
板３を第２図の如き姿勢に保つて外輪１の外側か
ら当てがい、外側傾斜面３d′の先端を溝２の外側
傾斜面２ｃ内へ臨ましめて、外方より内側へ均等
に押圧する。 When inserting the seal plate 3, first keep the seal plate 3 in the position shown in FIG. Tighten and press evenly from the outside to the inside.
これにより、シール板３は、第２図の如き状態
で係止溝２内へ嵌着され、内側の垂直面３ａが溝
２の内側面２ａに、また、薄肉部８に該当する外
側傾斜面３d′上の突起体９が、溝２の傾斜した外
側面２ｃへ夫々接当し、突起体９自体の弾力性に
薄肉部８の弾力性が相乗りすることにより、シー
ル板３が係止溝２内へ強固に固着されることにな
る。 As a result, the seal plate 3 is fitted into the locking groove 2 in the state shown in FIG. The protrusions 9 on 3d' come into contact with the inclined outer surfaces 2c of the groove 2, and the elasticity of the thin part 8 combines with the elasticity of the protrusions 9 themselves, so that the seal plate 3 closes in the locking groove. 2 will be firmly fixed inside.
又、ボール内部からのグリース等の漏出は、前
記両内側面２ａ，３ｂの接当面で阻止される。更
に、内輪４とシール板３の内周端部３ｅ間の間〓
Ｇからのごみ等の侵入は、内部から外部向つて漏
出しようとするグリースＬと、間〓Ｇから侵入し
たごみＤとの混合体が、間〓G′部に溜まること
により、連続的な内部からのグリースの漏出やご
みの侵入が、夫々阻止されることになる。 Further, leakage of grease or the like from inside the ball is prevented by the abutment surfaces of the inner surfaces 2a and 3b. Furthermore, between the inner ring 4 and the inner peripheral end 3e of the seal plate 3
The intrusion of dirt, etc. from G is caused by a mixture of grease L leaking from the inside to the outside and dirt D entering from G This will prevent grease from leaking and dirt from entering.
第３図は、本考案の第２実施例に係るシール板
の取付状態を示す部分拡大縦断面である。本実施
に係るシール板３は、その内周端部が直線状に仕
上げられている点と、外周端部３ａの外側の傾斜
面３d′の勾配が、垂直状に近い点とを除けば、前
記第１実施例のシール板と全く同一の構成であ
り、その作用効果もほぼ同じである。 FIG. 3 is a partially enlarged vertical cross-section showing the attached state of the seal plate according to the second embodiment of the present invention. The seal plate 3 according to this embodiment has the following points, except that its inner peripheral end is finished in a straight line, and the slope of the outer slope 3d' of the outer peripheral end 3a is nearly vertical. It has exactly the same structure as the seal plate of the first embodiment, and its effects are also almost the same.
（考案の効果）
本考案に於いては、外輪１の係止溝２内に嵌合
するシール板の外周端部３ａの内側面に複数の窪
部７を形成して、外周端部３ａの外側面に複数の
薄肉部を形成すると共に、その上方に突起体９を
形成するようにしているため、シール板３の嵌着
時には、外周端部３ａの外側面の薄肉部８がその
弾力性によつて内側方向へ容易に彎曲することが
出来る。その結果、シール板３の嵌着が極めて容
易なものになると共に、嵌着時にかかる押圧力が
円周方向に多少不均等であつても、或いは前記押
圧力が多少過大になつても、従前のシール板のよ
うに、突起体９そのものが押しつぶされて嵌着後
の弾力性が減少し、これによつて、使用中にシー
ル板にがたつきを生ずるというようなことが皆無
になる。(Effect of the invention) In the present invention, a plurality of recesses 7 are formed on the inner surface of the outer peripheral end 3a of the seal plate that fits into the locking groove 2 of the outer ring 1, and the outer peripheral end 3a is Since a plurality of thin-walled portions are formed on the outer surface and a protrusion 9 is formed above the thin-walled portions, when the seal plate 3 is fitted, the thin-walled portion 8 on the outer surface of the outer peripheral end 3a has its elasticity. It can be easily bent inward. As a result, it becomes extremely easy to fit the seal plate 3, and even if the pressing force applied during fitting is somewhat uneven in the circumferential direction, or even if the pressing force is somewhat excessive, As with the seal plate, the protrusion 9 itself is crushed and its elasticity after fitting is reduced, thereby eliminating the possibility of the seal plate shaking during use.
また、係止溝２の加工精度が多少悪くても、或
いは、使用中の温度変化等によつてシール板その
ものの寸法が多少変動しても、突起体９の弾力性
とこれが設けられている薄肉部８そのものの弾力
性とが、溝２の外側面に相乗して作用するため、
シール板の嵌合力が強固で且つ粘りのあるものに
なり、使用中に於けるシール板のがたつきや脱落
が皆無になる。 Furthermore, even if the machining accuracy of the locking groove 2 is somewhat poor, or even if the dimensions of the seal plate itself vary somewhat due to temperature changes during use, the elasticity of the protrusion 9 and the Since the elasticity of the thin wall portion 8 itself acts synergistically with the outer surface of the groove 2,
The fitting force of the seal plate becomes strong and sticky, and there is no rattling or falling off of the seal plate during use.
本考案は上述の通り、外径が３〜60mmφ程度の
シール型ベアリングに於いて特に優れた実用的効
用を奏するものである。 As mentioned above, the present invention has particularly excellent practical effects on sealed type bearings having an outer diameter of about 3 to 60 mmφ.
第１図は本考案に係るシール板の傾斜面であ
り、第２図は、使用状態を示す部分拡大断面図で
ある。第３図は、第２実施例に係るシール板の使
用状態を示す部分拡大断面図である。第４図及び
第５図は、従前のシール板の使用状態を示す部分
縦断面図である。
１……外輪、２……シール板係止溝、２ｃ……
係止溝の外側面、３……ベアリング用シール板、
３ａ……シール板の外周端部、７……窪部、８…
…薄肉部、９……突起体。
FIG. 1 shows an inclined surface of the seal plate according to the present invention, and FIG. 2 is a partially enlarged sectional view showing the state of use. FIG. 3 is a partially enlarged sectional view showing how the seal plate according to the second embodiment is used. FIGS. 4 and 5 are partial vertical cross-sectional views showing how the conventional seal plate is used. 1... Outer ring, 2... Seal plate locking groove, 2c...
Outer surface of locking groove, 3...Seal plate for bearing,
3a... Outer peripheral end of seal plate, 7... Recessed portion, 8...
...Thin wall portion, 9...Protrusion.
Claims (1)
へ、その外周端部を嵌合すると共に、内輪とその
内周端部との間に僅かな間〓を設けるようにした
非接触型のプラスチツク製のベアリング用シール
板に於いて、シール板３の外周端部３ａの内面側
に適宜の幅を有する複数の窪部７を形成し、前記
外周端部３ａに複数の薄肉部８を形成すると共
に、該薄肉部８の外周面に、係止溝２内へ嵌合時
に係止溝２の外側面２ｃに当接して弾性変形をす
る突起体９を形成したことを特徴とするベアリン
グ用シール板。 The outer circumferential end of the seal plate is fitted into the locking groove of the seal plate provided on the outer end of the inner circumferential surface of the outer ring, and a slight gap is provided between the inner ring and the inner circumferential edge of the seal plate. In a contact-type plastic bearing seal plate, a plurality of recesses 7 having an appropriate width are formed on the inner surface of an outer peripheral end 3a of the seal plate 3, and a plurality of thin-walled parts are formed on the outer peripheral end 3a. 8, and a protrusion 9 is formed on the outer circumferential surface of the thin portion 8 to abut against the outer surface 2c of the locking groove 2 and elastically deform when it is fitted into the locking groove 2. Seal plate for bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987102880U JPH059533Y2 (en) | 1987-07-03 | 1987-07-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987102880U JPH059533Y2 (en) | 1987-07-03 | 1987-07-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS647918U JPS647918U (en) | 1989-01-17 |
| JPH059533Y2 true JPH059533Y2 (en) | 1993-03-09 |
Family
ID=31333195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987102880U Expired - Lifetime JPH059533Y2 (en) | 1987-07-03 | 1987-07-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH059533Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0442572Y2 (en) * | 1986-05-29 | 1992-10-08 |
-
1987
- 1987-07-03 JP JP1987102880U patent/JPH059533Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS647918U (en) | 1989-01-17 |
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