JPS633450Y2 - - Google Patents
Info
- Publication number
- JPS633450Y2 JPS633450Y2 JP1983110007U JP11000783U JPS633450Y2 JP S633450 Y2 JPS633450 Y2 JP S633450Y2 JP 1983110007 U JP1983110007 U JP 1983110007U JP 11000783 U JP11000783 U JP 11000783U JP S633450 Y2 JPS633450 Y2 JP S633450Y2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- diameter
- opening ring
- inner diameter
- nut
- 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
- 230000002265 prevention Effects 0.000 claims description 8
- 238000009751 slip forming Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は調整用に適用して有効な脱落防止装置
付スクリユーに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a screw with a drop-off prevention device that is effective when applied for adjustment.
（従来技術）
例えば、自動車のドラムブレーキに調整用とし
て使用されるスクリユーは、第１図に１で示すよ
うに、調整用ナツト２に螺合した状態でドラムブ
レーキに組込まれる。しかして、ドラムブレーキ
にあつては、その使用を重ねるに従いブレーキラ
イニングが摩耗するので、ブレーキの効果が徐々
に減少し、このため、前記スクリユー１を調整用
ナツト２から抜け方向にねじ戻して、ブレーキの
効果を回復させるようにしている。(Prior Art) For example, a screw used for adjustment in a drum brake of an automobile is assembled into the drum brake in a state in which it is screwed into an adjustment nut 2, as shown at 1 in FIG. However, in the case of drum brakes, as the brake linings are worn over time, the effectiveness of the brake gradually decreases. We are trying to restore the effectiveness of the brakes.
しかしながら、ブレーキライニングの摩耗が甚
だしくなると、スクリユー１のねじ戻し量が増大
し、場合によつてはスクリユー１が調整用ナツト
２から脱落してブレーキ機能を全く喪失させてし
まう危険性があり、問題になつていた。 However, if the wear of the brake lining becomes severe, the amount of unscrewing of the screw 1 will increase, and in some cases, there is a risk that the screw 1 will fall off from the adjustment nut 2 and the brake function will be completely lost, which is a problem. I was getting used to it.
（考案の目的）
本考案は、上記従来技術の問題点に鑑み、相手
ナツトからの脱落を防止することができる簡易構
成の脱落防止装置付スクリユーを得ることを目的
とする。(Purpose of the invention) In view of the problems of the prior art described above, the object of the present invention is to obtain a screw with a drop-off prevention device of a simple structure that can prevent the screw from falling off from the mating nut.
（考案の構成）
そして、この目的は、スクリユー本体の先端部
に、基部側へ向けて小径となる截頭円錘状の係合
部と、袋状ナツトの内径よりわずか小径のフラン
ジ部とを連続して形成し、前記係合部には、円周
方向の一部に切欠部を設けて成る開口リングを遊
嵌し、かつ該開口リングを、自由状態で前記めね
じ部内径より大径となると共に前記係合部の小径
側に寄つた位置で前記めねじ部内径より小径に縮
小し得る大きさに形成し、該開口リングの拡縮を
利用してこれにストツパーとしての機能を持たせ
るようにしたスクリユーによつて達成される。(Structure of the invention) This purpose is to provide the tip of the screw body with a truncated conical engagement portion that becomes smaller in diameter toward the base, and a flange portion with a diameter slightly smaller than the inner diameter of the bag nut. an opening ring having a notch provided in a part of the circumferential direction is loosely fitted into the engaging part, and the opening ring has a diameter larger than the inner diameter of the female thread part in a free state. At the same time, it is formed to a size that can be reduced to a smaller diameter than the inner diameter of the female thread at a position closer to the small diameter side of the engagement part, and by utilizing the expansion and contraction of the opening ring, it is provided with a function as a stopper. This is accomplished by using a screwdriver.
（実施例）
以下、本考案の実施例を添付図面にもとづいて
説明する。(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第２図は本考案にかゝる脱落防止装置付スクリ
ユーの構造および使用状態を示したものである。
同図中、１１で示す脱落防止付スクリユーは、ス
クリユー本体１２の先端部に、基部１１ａ側に向
けて小径となる截頭円錘状の係合部１３と該係合
部１３に連なるフランジ部１４とを形成してお
り、前記係合部１３には遊嵌状態で拡縮自在の開
口リング１５を装着している。 FIG. 2 shows the structure and usage of the screw with a drop-off prevention device according to the present invention.
In the same figure, the screw with a fall-off prevention device indicated by 11 has a truncated conical engagement portion 13 that becomes smaller in diameter toward the base 11a at the tip of the screw main body 12, and a flange portion connected to the engagement portion 13. 14, and an expandable and retractable opening ring 15 is attached to the engaging portion 13 in a loosely fitted state.
この係合部１３と、フランジ部１４と、開口リ
ング１５とは脱落防止装置を構成するもので、い
ま、図示のごとくスクリユー本体１２のおねじ部
１２ａを調整用ナツト２のめねじ部２ａに螺合
し、この状態から本スクリユー１１をねじ戻そう
とすると、開口リング１５がフランジ部１４側へ
移動してそこに係止され、この時、開口リング１
５の外径が調整用ナツト２のめねじ部２ａの内径
よりも大であるため、本スクリユー１１の調整用
ナツト２からの離脱が防止されるようになる。 The engaging portion 13, flange portion 14, and opening ring 15 constitute a drop-off prevention device, and as shown in the figure, the male threaded portion 12a of the screw body 12 is inserted into the female threaded portion 2a of the adjustment nut 2. When the main screw 11 is screwed back together and the main screw 11 is unscrewed from this state, the opening ring 15 moves toward the flange portion 14 and is locked there, and at this time, the opening ring 1
Since the outer diameter of the screw 5 is larger than the inner diameter of the female threaded portion 2a of the adjusting nut 2, the main screw 11 is prevented from coming off from the adjusting nut 2.
こゝで、開口リング１５は、第３図ａ，ｂにそ
の詳細を示すように、円周方向の一部を切除して
そこに切欠部１６を設けており、また片側の外周
角部に第１の面取り部１７を、同様の内周角部に
第２の面取り部１８を設けている。この開口リン
グ１５は弾性を有する材料、例えばプラスチツク
から成るもので、前記切欠部１６の存在により、
これに径内・外方から外力を加えれば容易に拡縮
するようになつている。 As shown in detail in FIGS. 3a and 3b, the aperture ring 15 has a notch 16 formed by cutting out a part in the circumferential direction, and a notch 16 at one outer corner. A first chamfered portion 17 and a second chamfered portion 18 are provided at the same inner peripheral corner. This aperture ring 15 is made of an elastic material such as plastic, and due to the presence of the cutout 16,
It is designed to easily expand or contract by applying external force from inside or outside the diameter.
しかして、開口リング１５は、その自由状態に
おいて、外径d1がスクリユー本体１２のおねじ部
１２ａの外径と略同一寸法で、前記調整用ナツト
２のめねじ部２ａの内径より大きくなつており、
また面取り部１７の小径d2が前記めねじ部２ａの
内径と略同一寸法になつている。すなわち、本開
口リング１５は、その自由状態において、調整用
ナツト２のめねじ部２ａ内に嵌入し得ないものと
なり、いま、第１の面取り部１７を向けてこれを
強引に押し込むと、めねじ部２ａから第１の面取
り部１７を介して径内方へ押圧力が伝達され、こ
れにより該開口リング１５は適宜縮小するものと
なる。 Thus, in its free state, the opening ring 15 has an outer diameter d 1 that is approximately the same as the outer diameter of the male threaded portion 12 a of the screw body 12 and larger than the inner diameter of the female threaded portion 2 a of the adjustment nut 2 . and
Further, the small diameter d2 of the chamfered portion 17 is approximately the same size as the inner diameter of the female threaded portion 2a. That is, the main opening ring 15 cannot be fitted into the female threaded portion 2a of the adjustment nut 2 in its free state, and if it is forcibly pushed in with the first chamfered portion 17 facing A pressing force is transmitted radially inward from the threaded portion 2a via the first chamfered portion 17, whereby the aperture ring 15 is appropriately reduced.
一方、上記開口リング１５を装着するスクリユ
ー本体１２の先端部は、第４図に拡大して示すよ
うに、前記開口リング１５の厚さｈ（第３図）の
２倍程度の長さＨを有する係合部１３と調整用ナ
ツト２のめねじ部２ａの内径よりわずか小さい外
径Ｄを有するフランジ部１４とを備えている。係
合部１３は、またその小径D1が開口リング１５
の内径より充分小さくかつその大径D2が開口リ
ング１５の内径面取り部１８の大径d3（第３図）
と略同一寸法になつている。すなわち、係合部１
３は大径リング１５が遊嵌しかつ遊動する充分な
る余裕を有し、またフランジ部１４は調整用ナツ
ト２のめねじ部２ａに挿通できる大きさとなつて
いる。 On the other hand, the tip of the screw body 12 to which the aperture ring 15 is attached has a length H that is approximately twice the thickness h of the aperture ring 15 (FIG. 3), as shown in an enlarged view in FIG. and a flange portion 14 having an outer diameter D slightly smaller than the inner diameter of the female threaded portion 2a of the adjusting nut 2. The engaging portion 13 also has a small diameter D1 that is connected to the opening ring 15.
The large diameter D 2 is sufficiently smaller than the inner diameter of the inner diameter of the opening ring 15 and the larger diameter d 3 of the inner diameter chamfered portion 18 of the aperture ring 15 (Fig. 3).
It has almost the same dimensions. That is, the engaging portion 1
3 has sufficient room for the large-diameter ring 15 to fit and move loosely, and the flange portion 14 is large enough to be inserted into the female threaded portion 2a of the adjustment nut 2.
なお、開口リング１５の内径面取り部１８と係
合部１３とは略同一の傾斜角を有している。また
開口リング１５の切欠部１６の切欠長さＬ（第３
図）は係合部１３の小径D1よりわずか小さくな
つており、これにより開口リング１５は軽く拡開
すれば容易に係合部１３への装着が可能になる。 Note that the inner diameter chamfered portion 18 of the opening ring 15 and the engaging portion 13 have substantially the same inclination angle. In addition, the notch length L of the notch 16 of the opening ring 15 (the third
The diameter D 1 of the engagement portion 13 is slightly smaller than the small diameter D 1 of the engagement portion 13, so that the aperture ring 15 can be easily attached to the engagement portion 13 by expanding it slightly.
かゝる構成により、予めスクリユー本体１１の
先端部の係合部１３に、第１の面取り部１７を前
方に向けて開口リング１５を装着する。そして、
いま第５図ａ〜ｄに示すように、本スクリユー１
１を調整用ナツト２へねじ込みかつそこからねじ
戻そうとする場合、先ず、フランジ部１４を調整
用ナツト２のめねじ部２ａ内にのぞかせａ、その
まゝわずか押し込む。すると、開口リング１５が
係合部１３の小径側に寄せられ、そこでさらに強
く押し込むと、めねじ部２ａから第１の面取り部
１７を介して開口リング１５に径内方への押圧力
が加わり、これによつて該開口リング１５が縮小
してめねじ部２ａ内に嵌入する。かゝる開口リン
グ１５の嵌入により、スクリユー本体１２のおね
じ部１２ａと調整用ナツト２のめねじ部２ａとが
係合するようになり、そのまゝスクリユー本体１
２を調整用ナツト２にねじ込むｂ。 With this configuration, the opening ring 15 is attached in advance to the engaging portion 13 at the tip of the screw body 11 with the first chamfered portion 17 facing forward. and,
As shown in Figure 5 a to d, the main screw 1
1 into the adjustment nut 2 and unscrewed from there, first, look into the female threaded part 2a of the adjustment nut 2 with the flange part 14 a, and push it in slightly. Then, the opening ring 15 is brought to the small diameter side of the engaging part 13, and when it is pushed in further there, a radially inward pressing force is applied to the opening ring 15 from the female thread part 2a via the first chamfered part 17. As a result, the opening ring 15 is contracted and fitted into the female threaded portion 2a. By fitting the opening ring 15 in this manner, the male threaded portion 12a of the screw body 12 and the female threaded portion 2a of the adjustment nut 2 come to engage with each other, and the screw body 1
2 into the adjustment nut 2b.
そして、スクリユー本体１２の先端部のおねじ
部１２ａが調整用ナツト２のめねじ部２ａを通過
すると、開口リング１５は拘束するものがないた
め自由状態に復元するｃ。 When the male threaded portion 12a at the tip of the screw body 12 passes through the female threaded portion 2a of the adjustment nut 2, the opening ring 15 returns to its free state since there is nothing to restrain it c.
次に、ブレーキの効果を回復させるため、本ス
クリユー１１を調整用ナツト２からねじ戻そうと
して、そのねじ戻し量が過大になると、開口リン
グ１５が調整用ナツト２のめねじ部２ａに押され
てフランジ部１４側へ移行し、該フランジ部１４
に接して停止する。したがつてこれ以上ねじ戻し
はできないものとなり、本スクリユー１１の調整
用ナツト２からの離脱が防止されるｄ。 Next, in order to restore the effect of the brake, when an attempt is made to unscrew the main screw 11 from the adjusting nut 2, the amount of unscrewing becomes excessive, and the aperture ring 15 is pushed by the female threaded portion 2a of the adjusting nut 2. and moves to the flange portion 14 side, and the flange portion 14
Stop when touching. Therefore, the screw cannot be unscrewed any further, and the main screw 11 is prevented from coming off from the adjustment nut 2.d.
なお、例えばブレーキライニングが甚しく摩耗
し、その交換を行わなければならない場合は、第
２図、図示のように本スクリユー１１を充分にね
じ込めば良い。 For example, if the brake lining is severely worn and must be replaced, the main screw 11 may be fully screwed in as shown in FIG.
さらに、本スクリユー１１はドラムブレーキへ
の使用に限定されず、脱落を防止したい他の用途
にも使用できることはもちろんである。 Furthermore, this screw 11 is not limited to use in drum brakes, but can of course be used in other applications where it is desired to prevent the screw from falling off.
（考案の効果）
以上、詳細に説明したように、本考案にかゝる
脱落防止装置付スクリユーは、スクリユー本体の
先端部に、ねじ込み時に袋ナツトのめねじ部より
小径となり、ねじ戻し時に前記めねじ部より大径
となるように拡縮自在の開口リングを遊嵌したの
で、単にねじ込むだけで開口リングを袋状ナツト
内に挿入することができ、該袋状ナツトからの脱
落を確実に防止できる効果が得られた。(Effects of the invention) As explained above in detail, the screw with the fall-off prevention device according to the invention has a screw that has a smaller diameter than the female threaded part of the cap nut when screwed into the tip of the screw body, and has a smaller diameter than the female threaded part of the cap nut when unscrewed. Since the expandable and retractable opening ring is loosely fitted so that it has a larger diameter than the female thread, the opening ring can be inserted into the bag nut by simply screwing it in, and it is reliably prevented from falling off from the bag nut. I got the desired effect.
第１図は従来のスクリユーの構造および使用態
様を示す断面図、第２図は本考案にかゝる脱落防
止装置付スクリユーの構造および使用態様を示す
断面図、第３図ａ，ｂは開口リングの構造を示す
平面図と断面図、第４図はスクリユー本体先端部
構造を示す正面図、第５図ａ〜ｄは本スクリユー
の相手ナツトへの種々の螺合態様を示す断面図で
ある。
１１ａ……基部、１２……スクリユー本体、１
３……係合部、１４……フランジ部、１５……開
口リング、１６……切欠部、２……（袋状）ナツ
ト、２ａ……めねじ部。
Figure 1 is a sectional view showing the structure and usage of a conventional screw, Figure 2 is a sectional view showing the structure and usage of a screw with a drop-off prevention device according to the present invention, and Figures 3a and b are openings. A plan view and a sectional view showing the structure of the ring, FIG. 4 is a front view showing the structure of the tip of the screw body, and FIGS. 5 a to 5 d are sectional views showing various ways of screwing the screw into the mating nut. . 11a...base, 12...screw body, 1
3... Engaging portion, 14... Flange portion, 15... Opening ring, 16... Notch portion, 2... (bag-shaped) nut, 2a... Female threaded portion.
Claims (1)
スクリユー本体の先端部に、その基部側から先端
側へかけて、基部側へ向けて小径となる裁頭円錘
状の係合部と袋状ナツトのめねじ部内径よりわず
か小径のフランジ部とを連続して形成し、前記係
合部には、円周方向の一部に切欠部を設けて成る
拡縮自在の開口リングを遊嵌し、かつ該開口リン
グを、自由状態で前記めねじ部内径より大径とな
ると共に前記係合部の小径側に寄つた位置で前記
めねじ部内径より小径に縮小し得る大きさに形成
したことを特徴とする脱落防止装置付スクリユ
ー。 In the screw screwed into the bag-shaped nut,
At the tip of the screw body, from the base side to the tip side, there is a truncated cone-shaped engagement part whose diameter becomes smaller toward the base side, and a flange part whose diameter is slightly smaller than the inner diameter of the female thread part of the bag nut. is continuously formed, and a retractable opening ring having a notch provided in a part in the circumferential direction is loosely fitted into the engaging part, and the opening ring is inserted into the female threaded part in a free state. A screw with a fall-off prevention device, characterized in that the screw is formed in a size that is larger than the inner diameter and can be reduced to a smaller diameter than the inner diameter of the female thread portion at a position closer to the small diameter side of the engaging portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11000783U JPS6018323U (en) | 1983-07-15 | 1983-07-15 | Screw with fall prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11000783U JPS6018323U (en) | 1983-07-15 | 1983-07-15 | Screw with fall prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6018323U JPS6018323U (en) | 1985-02-07 |
| JPS633450Y2 true JPS633450Y2 (en) | 1988-01-28 |
Family
ID=30256030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11000783U Granted JPS6018323U (en) | 1983-07-15 | 1983-07-15 | Screw with fall prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018323U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0518410A (en) * | 1991-02-22 | 1993-01-26 | Nishimura Seiko:Kk | Nut fastener for bolt |
| JP4500004B2 (en) * | 2002-05-31 | 2010-07-14 | 株式会社三栄水栓製作所 | Ball tap |
| JP6048063B2 (en) * | 2012-10-18 | 2016-12-21 | コクヨ株式会社 | Member joint structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016238U (en) * | 1973-06-02 | 1975-02-20 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5634175Y2 (en) * | 1977-05-06 | 1981-08-13 |
-
1983
- 1983-07-15 JP JP11000783U patent/JPS6018323U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016238U (en) * | 1973-06-02 | 1975-02-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6018323U (en) | 1985-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5609455A (en) | Anticross-threading male fastener | |
| JPH0427207U (en) | ||
| JPS633450Y2 (en) | ||
| JPH0121394B2 (en) | ||
| JPS6159875B2 (en) | ||
| US2386897A (en) | Self-locking stud or the like | |
| JPH08261223A (en) | Locking nut | |
| US2395141A (en) | Fastener device | |
| JPH0738726Y2 (en) | Connecting and fixing device and its related technology | |
| JPS6085684U (en) | pipe fittings | |
| JPS6032418Y2 (en) | Locknut | |
| JP2504853Y2 (en) | Butt plug on a fishing rod | |
| JPS60102304U (en) | Insert for deck plate | |
| JPH0311120U (en) | ||
| JPH0110548Y2 (en) | ||
| JPH026812U (en) | ||
| JPH0731034Y2 (en) | Flexible tube fittings | |
| JPS5817985Y2 (en) | pipe fittings | |
| JPH034106Y2 (en) | ||
| JPH08233165A (en) | Pipe joint | |
| JPS5853911U (en) | Natsuto | |
| JPH0624291U (en) | Flexible joint with threads on both ends | |
| JPS6047915U (en) | Sealing screw device | |
| JPS58161859U (en) | Container lid loosening prevention device | |
| JPS6061510U (en) | Nut with locking lock |