JPS5838197Y2 - case - Google Patents
caseInfo
- Publication number
- JPS5838197Y2 JPS5838197Y2 JP1975108654U JP10865475U JPS5838197Y2 JP S5838197 Y2 JPS5838197 Y2 JP S5838197Y2 JP 1975108654 U JP1975108654 U JP 1975108654U JP 10865475 U JP10865475 U JP 10865475U JP S5838197 Y2 JPS5838197 Y2 JP S5838197Y2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- case
- die
- cast
- oil seal
- 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
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
【考案の詳細な説明】
本考案は、ケースの貫通孔と該貫通孔に挿入した回転軸
との間にΦ合させたオイルシールの浮上りや熱膨張変形
に伴う抜出し作用を防止するとともに、オイルシールに
上記作用を生じさせるための貫通孔をダイカスト成型無
加工により形成することを目的とするものである。[Detailed description of the invention] The present invention prevents the oil seal, which is Φ-fitted between the through hole of the case and the rotating shaft inserted into the through hole, from lifting up or from being pulled out due to thermal expansion deformation. The purpose of this invention is to form a through hole for producing the above-mentioned effect in a seal without die-casting.
本考案は、ダイカスト成型無加工のダイカストケースの
貫通孔面の中央部を両側方よりも突出させ中央部より両
１ｊｌ彷に向は傾斜面を形成し、オイルシールのシール
部材の内部応力による左右移動作用力を打消させてオイ
ルシールの浮上り及び抜出しを防止するものである。In this invention, the center part of the through-hole surface of the die-cast case without die-cast molding is protruded from both sides, and an inclined surface is formed in both directions from the center part. This prevents the oil seal from floating and coming out by canceling the moving force.
以下、図面に示す実施例にもとづいて説明する。Hereinafter, a description will be given based on the embodiments shown in the drawings.
１はダ・ｆカスト成形された製品を、機械加工を行なわ
ないで無加工で使用するケースの一部（側壁、底壁、頂
壁）であシ、回転軸２を挿通するための貫通孔３が形成
されている。1 is a part of the case (side wall, bottom wall, top wall) in which the Da-F cast molded product is used without machining, and there is a through hole for inserting the rotating shaft 2. 3 is formed.
貫通孔３の孔面３ａは、ケースの壁の中央部又はその近
傍左右側寄り（即ち壁厚の中間部）をダイカスト成型時
の上下金型の位置定め用の基準線Ａとし該基準線Ａより
左右両側面に向は傾斜させて傾斜面Ｂをし形抜勾配を形
成している。For the hole surface 3a of the through hole 3, the central part of the wall of the case or its vicinity on the left and right sides (that is, the middle part of the wall thickness) is used as a reference line A for positioning the upper and lower molds during die casting molding. The direction is inclined toward both the left and right sides to form an inclined surface B to form a draft.
４はオイルシールで、弾性部材により形成したリング５
により軟質樹脂、ゴム等よりなるシール部材６の内周部
６ａを回転軸２０周面に押圧させて両者を密着させ、シ
ール部材６の外１１６ｂを帯鉄よりなるバンド７により
貫通孔の孔面３ａに密着させるように構成されている。4 is an oil seal, and a ring 5 formed of an elastic member
The inner periphery 6a of the seal member 6 made of soft resin, rubber, etc. is pressed against the circumferential surface of the rotating shaft 20 to bring them into close contact. 3a.
オイルシール４のシール部材６ば、自然姿勢では第２図
の如くであるが、使用状態においては、第１図に示す如
くシール部材６の内周部６ａおよび外周部６ｂが変形し
て回転軸２、ケースの孔面３ａに密着する。The sealing member 6 of the oil seal 4 is in its natural position as shown in FIG. 2, but when in use, the inner circumference 6a and outer circumference 6b of the sealing member 6 deform as shown in FIG. 2. Closely contacts the hole surface 3a of the case.
従来のオイルシール嵌合部においては、オイルシールの
リングのプレス抜勾配、オイルシールのシール部材の圧
入状態でケース貫通孔の孔加工による勾配等によりオイ
ルシールの圧入状態での圧力Ｆの分布は第３図の曲線Ｐ
に示す如く不均一となり左右移動力の不安定不平衝のた
めオイルシールの浮上り、抜は出しを生じることがある
。In the conventional oil seal fitting part, the distribution of pressure F when the oil seal is press-fitted is affected by the press draft of the oil seal ring, the slope created by drilling the case through-hole when the seal member of the oil seal is press-fitted, etc. Curve P in Figure 3
As shown in the figure, the oil seal may float or come out due to unevenness and unstable imbalance of the left and right moving forces.
本考案にネ・いては、オイルシールの圧入状態での圧力
Ｆの分布は第４図は曲線Ｑに示す如く、均一となるカへ
中央部附近の基準線位置で最大となるので シール部材
の内部応力による左右移動作用力・は打消され、オイル
シールの浮上り及び抜出□しを防止することができる。According to the present invention, the distribution of pressure F when the oil seal is press-fitted is uniform, as shown by curve Q in Figure 4, and reaches its maximum at the reference line position near the center of the seal member. The lateral movement force due to internal stress is canceled, and the oil seal can be prevented from floating and being pulled out.
更に、上記のオイルシールの浮上り及び抜出しを防止す
る作用を生じさせるため、本考案は貫通孔のほぼ中央部
を貫通孔中心に向は突出させるものであるが゛、ダイカ
スト成型時の基準線Ａを孔面３ａのほぼ中央部としかつ
基準線Ａ位置の貫通孔径を最小としたから、ダイカスト
成型後に伺らの機械加工を必要とすることなく無加工の
ダイカストケースで本考案を達成するための貫通孔を形
成することができ、製造工程を簡素化し製作コストの低
減をはかる無加工のダイカストケースにおいて、無加工
でオイルシールを回転軸とダイカストケースの貫通孔と
の間に強固に嵌着でき、無加工のダイカストケースにお
いて本考案の効果は顕著である。Furthermore, in order to prevent the oil seal from floating and coming out, the present invention makes the approximately central part of the through hole protrude toward the center of the through hole. Since A is set at approximately the center of the hole surface 3a and the diameter of the through hole at the reference line A position is minimized, the present invention can be achieved with an unprocessed die-cast case without requiring additional machining after die-cast molding. The oil seal is firmly fitted between the rotating shaft and the die-cast case's through-hole without any machining, in an unprocessed die-cast case that simplifies the manufacturing process and reduces manufacturing costs. The effect of the present invention is remarkable in unprocessed die-cast cases.
第１図は本考案を実施したケースの要部を示す部分断面
図、第２図はオイルシールの縦断面図である。
第３図は従来方式によるオイルシールの圧、人時の圧力
分布図、第４図は本考案のケースにおける圧力分布図で
ある。
１・・・・・・ケース、２・・・・・・回転軸、４・・
・・・・オイルシール、Ａ・・・・・・基準線、Ｂ・・
・・・・傾斜面。FIG. 1 is a partial sectional view showing the main parts of a case embodying the present invention, and FIG. 2 is a longitudinal sectional view of an oil seal. FIG. 3 is a pressure distribution diagram of the oil seal pressure and human hour according to the conventional method, and FIG. 4 is a pressure distribution diagram in the case of the present invention. 1... Case, 2... Rotating shaft, 4...
...Oil seal, A...Reference line, B...
・・・Slope surface.
Claims (1)
る回転軸と前記貫通孔との間にオイルシールを嵌装した
ケースにおいて、ケースのダイカスト成型にあたり互い
に対向させるプレス凸型とプレス凹型との接触面である
ダイカスト成型時の基準線Ａを前記貫通孔の孔面３ａの
ほぼ中央部とし前記基準線Ａの位置を前記貫通孔の最小
径の部分とし前記基準線Ａよりケースの南向に向は貫通
孔の径を順次増大させ孔面３ａのほぼ中央部を貫通孔中
心に向は突出させてなるダイカスト成型無加工の貫通孔
を有することを特徴とする、ダイカスト成型無加工のダ
イカストケース。In a case in which an oil seal is fitted between a rotating shaft passing through a through hole provided in a die-cast case and the through hole, contact between a press convex mold and a press concave mold that are opposed to each other during die-cast molding of the case A reference line A during die casting molding, which is a surface, is set at approximately the center of the hole surface 3a of the through hole, and the position of the reference line A is set at the minimum diameter part of the through hole, and the direction is directed southward of the case from the reference line A. A die-cast case without die-cast molding, characterized in that it has a through-hole without die-cast molding, in which the diameter of the through-hole is gradually increased and a substantially central portion of the hole surface 3a projects toward the center of the through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975108654U JPS5838197Y2 (en) | 1975-08-05 | 1975-08-05 | case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975108654U JPS5838197Y2 (en) | 1975-08-05 | 1975-08-05 | case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5222856U JPS5222856U (en) | 1977-02-17 |
| JPS5838197Y2 true JPS5838197Y2 (en) | 1983-08-29 |
Family
ID=28589845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1975108654U Expired JPS5838197Y2 (en) | 1975-08-05 | 1975-08-05 | case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838197Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5760235Y2 (en) * | 1976-06-14 | 1982-12-22 | ||
| JPS61179008A (en) * | 1985-02-01 | 1986-08-11 | 田代 正憲 | Illumination street tower |
| JPH0636362Y2 (en) * | 1986-03-19 | 1994-09-21 | 日産ディーゼル工業株式会社 | Oil seal device |
-
1975
- 1975-08-05 JP JP1975108654U patent/JPS5838197Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5222856U (en) | 1977-02-17 |
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