JP2019143814A - Loosening prevention bolt - Google Patents

Loosening prevention bolt Download PDF

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JP2019143814A
JP2019143814A JP2019103672A JP2019103672A JP2019143814A JP 2019143814 A JP2019143814 A JP 2019143814A JP 2019103672 A JP2019103672 A JP 2019103672A JP 2019103672 A JP2019103672 A JP 2019103672A JP 2019143814 A JP2019143814 A JP 2019143814A
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hole
screw
screw hole
bolt
set screw
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JP2019103672A
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▲高▼行 木原
Takayuki Kihara
▲高▼行 木原
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Priority to JP2019137957A priority patent/JP6651244B2/en
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Abstract

To provide a bolt capable of preventing loosening in a reliable manner after being screwed into an object of various kinds including an ordinary nut.SOLUTION: A loosening prevention bolt 10 includes a screw hole 13 for a set screw, which skews from the end face of a head 11 to a side face of a shank 12. After the bolt 10 is screwed into an object nut or an object screw hole, a set screw 15 is screwed into the screw hole 13 for a set screw, and is brought into contact with the object nut or the object screw hole. Thereby, loosening of the loosening prevention bolt 10 can be prevented by the friction between the tip of the set screw 15 and the inner surface of the object nut or the object screw hole.SELECTED DRAWING: Figure 2

Description

本発明は、ナットや対象物にねじ込んだ後のゆるみを防止することのできるボルトに関する。   The present invention relates to a bolt capable of preventing loosening after being screwed into a nut or an object.

ボルトを対象物にねじ込んだ後、そのゆるみを防止するためのボルト側の機構としては、特許文献１に記載のようなものがある。   As a mechanism on the bolt side for preventing the loosening of the bolt after screwing into the object, there is one as described in Patent Document 1.

特開2012-112481号公報JP 2012-112481 A

特許文献１に記載のゆるみ止めボルトでは、専用のナットを用意しなければならないため、適用範囲が限られてしまう。
本発明が解決しようとする課題は、普通のナットを含む様々な対象物にねじ込んだ後、確実にゆるみを防止することのできるボルトを提供することである。 In the locking bolt described in Patent Document 1, a dedicated nut must be prepared, so the applicable range is limited.
The problem to be solved by the present invention is to provide a bolt that can reliably prevent loosening after being screwed into various objects including ordinary nuts.

上記課題を解決するために成された本発明に係るゆるみ止めボルトの第１の形態のものは、頭部端面から軸部側面にかけて斜行する、止めネジ用のネジ穴を有することを特徴とする。   The first type of the locking bolt according to the present invention, which is made to solve the above-mentioned problems, is characterized in that it has a screw hole for a set screw that runs obliquely from the head end surface to the shaft side surface. To do.

第１の形態のゆるみ止めボルトでは、該ボルトを対象ナットや対象ネジ穴にねじ込んだ後、止めネジ用のネジ穴に止めネジをねじ込み、該対象ナットや対象ネジ穴に当接させる。これにより、止めネジの先端と対象ナット又は対象ネジ穴の内面との間の摩擦によって本ゆるみ止めボルトのゆるみが防止される。   In the locking bolt of the first embodiment, after the bolt is screwed into the target nut or the target screw hole, a set screw is screwed into the screw hole for the set screw and brought into contact with the target nut or the target screw hole. Thus, the loosening bolt is prevented from loosening due to friction between the tip of the set screw and the inner surface of the target nut or target screw hole.

また、本発明に係るゆるみ止めボルトの第２の形態のものは、頭部端面から軸部内部にかけて設けられた、止めネジ用のネジ穴と、該ネジ穴側から見たときに該ネジ穴よりも小さい断面を有する、軸部端面から前記ネジ穴に向けて設けられた第２穴とを有することを特徴とする。   The second form of the locking bolt according to the present invention includes a screw hole for a set screw provided from the head end surface to the inside of the shaft portion, and the screw hole when viewed from the screw hole side. It has a 2nd hole provided toward the said screw hole from the axial part end surface which has a smaller cross section.

第２の形態のゆるみ止めボルトでは、該ボルトを対象ナットや対象ネジ穴にねじ込んだ後、該ボルトの頭部から止めネジ用のネジ穴に止めネジをねじ込んでゆき、前記第２穴に当接した時点で更に強くねじ込む。第２穴はその断面が止めネジ用のネジ穴の断面よりも小さいため、止めネジはそれ以上は進まないが、ねじ込まれる力によりその先端で第２穴を僅かに広げる。これにより、該ボルトはその箇所で僅かに径が大きくなり、対象ナットや対象ネジ穴の内面との間の摩擦が大きくなる。これにより、本ゆるみ止めボルトのゆるみが防止される。   In the locking bolt of the second form, after screwing the bolt into the target nut or target screw hole, the set screw is screwed into the screw hole for the set screw from the head of the bolt and hits the second hole. When it comes into contact, screw it in more strongly. Since the cross section of the second hole is smaller than the cross section of the screw hole for the set screw, the set screw does not advance any further, but the second hole is slightly widened at the tip by the screwing force. Thereby, the diameter of the bolt is slightly increased at that point, and friction between the target nut and the inner surface of the target screw hole is increased. Thereby, the loosening prevention bolt is prevented from loosening.

前記第２穴は、前記ネジ穴よりも小径の穴であってもよいし、前記ネジ穴とは中心がズレた同径又はそれよりも大径の穴であってもよい。   The second hole may be a hole having a smaller diameter than the screw hole, and may be a hole having the same diameter or a larger diameter than the screw hole.

本発明の第１及び第２形態のゆるみ止めボルトにおいて、止めネジとしてはホーローセット（いわゆる「いもネジ」）を用いることができる。   In the locking bolts of the first and second embodiments of the present invention, a hollow set (so-called “potato screw”) can be used as a set screw.

本発明に係るゆるみ止めボルトは、専用のナットを要することなく、それ自体で、対象ナットや対象ネジ穴にねじ込んだ後のゆるみが防止される。   The loosening prevention bolt according to the present invention can prevent loosening after being screwed into the target nut or the target screw hole by itself without requiring a special nut.

本発明の第１の形態のゆるみ止めボルトの一例の平面図(a)及び側面図(b)、並びにそれに用いる止めネジの平面図及び側面図(c)。The top view (a) and side view (b) of an example of the locking bolt of the 1st form of this invention, and the top view and side view (c) of a set screw used therefor. 前記第１の形態のゆるみ止めボルトの一例をねじ込むブロックの側面図(a)及び該ボルトを該ブロックにねじ込んだ状態の側面図(b)。The side view (a) of the block which screws in an example of the locking bolt of the said 1st form, and the side view (b) of the state which screwed this bolt into this block. 本発明の第２の形態のゆるみ止めボルトの一例の平面図(a)及び側面図(b)、並びにそれに用いる止めネジの平面図及び側面図(c)。The top view (a) and side view (b) of an example of the locking bolt of the 2nd form of this invention, and the top view and side view (c) of a set screw used therefor. 前記第２の形態のゆるみ止めボルトの一例に、板材を介してナットを締め付けた状態の側面図。The side view of the state which fastened the nut to the example of the loosening prevention bolt of the second form through the plate material.

本発明の第１の形態のゆるみ止めボルトの一例を図１(a)〜(c)を用いて説明する。このゆるみ止めボルト１０は、呼び径が20mm、呼び長さが30mmの全ネジボルトである。側面図(b)に破線で示されているように、本実施例のゆるみ止めボルト１０の内部には、頭部１１の端面から軸部１２の側面にかけて斜行して、止めネジ用のネジ穴１３が設けられている。   An example of the locking bolt according to the first embodiment of the present invention will be described with reference to FIGS. The locking bolt 10 is a full screw bolt having a nominal diameter of 20 mm and a nominal length of 30 mm. As shown by a broken line in the side view (b), the locking bolt 10 of the present embodiment is skewed from the end surface of the head 11 to the side surface of the shaft portion 12 to set the screw for the set screw. A hole 13 is provided.

このゆるみ止めボルト１０を、図２(a)に示すようなブロック１６にねじ込む場合の使用例を次に示す。ブロック１６には、このゆるみ止めボルト１０に対応するネジ穴１７を設けておく。このネジ穴１７にゆるみ止めボルト１０を、ワッシャ１８を介してねじ込んでゆき、所期の深さに達した時点で、止めネジ用のネジ穴１３に、ゆるみ止めボルト１０の頭部１１の穴から、止めネジ１５（図１(c)）をねじ込んでゆく。止めネジ１５は六角レンチ（図示せず）によりネジ穴１３にねじ込んでゆく。そして、止めネジ１５がブロック１６の壁面に到達した時点で止めネジ１５を強く締める（図２(b)）。
これにより、ゆるみ止めボルト１０はブロック１６に確実に固定され、ゆるむことがない。 An example of use in the case where the locking bolt 10 is screwed into the block 16 as shown in FIG. A screw hole 17 corresponding to the locking bolt 10 is provided in the block 16. The locking bolt 10 is screwed into the screw hole 17 through the washer 18 and when the desired depth is reached, the screw hole 13 for the locking screw is inserted into the hole 11 of the head 11 of the locking bolt 10. Then, the set screw 15 (FIG. 1 (c)) is screwed in. The set screw 15 is screwed into the screw hole 13 with a hexagon wrench (not shown). When the set screw 15 reaches the wall surface of the block 16, the set screw 15 is strongly tightened (FIG. 2B).
Thereby, the locking bolt 10 is securely fixed to the block 16 and does not loosen.

本発明の第２の形態のゆるみ止めボルトの一例を図３(a)〜(c)を用いて説明する。このゆるみ止めボルト２０は、呼び径が10mm、呼び長さが20mmの全ネジボルトである。側面図(b)に破線で示されているように、本実施例のゆるみ止めボルト２０の内部には、頭部２１の端面から軸部２２の中まで、止めネジ用のネジ穴２３が設けられている。そして、軸部２２の端面からそのネジ穴２３に向けて、そのネジ穴２３の中心とは少しずれた中心を持つ、同径の穴（第２穴）２４が設けられている。第２穴２４にはネジは切られていない（ネジを切ってもよいが、その必要がない）。   An example of the locking bolt according to the second embodiment of the present invention will be described with reference to FIGS. The locking bolt 20 is a full screw bolt having a nominal diameter of 10 mm and a nominal length of 20 mm. As shown by a broken line in the side view (b), a screw hole 23 for a set screw is provided from the end face of the head 21 to the inside of the shaft portion 22 inside the locking bolt 20 of the present embodiment. It has been. A hole (second hole) 24 having the same diameter is provided from the end surface of the shaft portion 22 toward the screw hole 23 and has a center slightly shifted from the center of the screw hole 23. The second hole 24 is not threaded (it may be threaded, but it is not necessary).

このゆるみ止めボルト２０を、板を締め付ける場合に使用する例を図４により説明する。板２６にはこのボルト２０の呼び径よりも大きい穴を開けておき、そこにこのボルト２０を通す。そして、ナット２７をボルト２０のネジにねじ込んでゆき、板２６を確実に締める。その後、ボルト２０の頭部２１からネジ穴２３に止めネジ２５を六角レンチでねじ込んでゆく。止めネジ２５がネジ穴２３の底に達した時点で止めネジ２５はそれ以上進まないが、ここで止めネジ２５を更に強くねじ込む。こうすることにより、第２穴２４が径方向に僅かに拡がり、それに伴いボルト２０の軸部２２が径方向に僅かに拡がる。このため、ボルト２０の軸部２２とナット２７の内面の摩擦が大きくなり、ゆるみ止めボルト２０はナット２７に確実に固定されることになる。   An example of using the locking bolt 20 when tightening the plate will be described with reference to FIG. A hole larger than the nominal diameter of the bolt 20 is made in the plate 26, and the bolt 20 is passed therethrough. Then, the nut 27 is screwed into the screw 20 and the plate 26 is securely tightened. Thereafter, the set screw 25 is screwed into the screw hole 23 from the head 21 of the bolt 20 with a hexagon wrench. When the set screw 25 reaches the bottom of the screw hole 23, the set screw 25 does not advance any further, but here, the set screw 25 is screwed more strongly. By doing so, the second hole 24 slightly expands in the radial direction, and accordingly, the shaft portion 22 of the bolt 20 slightly expands in the radial direction. For this reason, the friction between the shaft portion 22 of the bolt 20 and the inner surface of the nut 27 increases, and the locking bolt 20 is securely fixed to the nut 27.

図３に示した第２の形態のゆるみ止めボルトの例では、第２穴２４は頭部２１の端面から軸部２２まで設けられた止めネジ用のネジ穴２３と同径で中心軸がズレているものであったが、ネジ穴２３と中心軸が同じで、それよりもやや小径としてもよい。   In the example of the locking bolt of the second form shown in FIG. 3, the second hole 24 has the same diameter as the screw hole 23 for the set screw provided from the end surface of the head 21 to the shaft portion 22 and the center axis is displaced. However, the screw hole 23 and the central axis are the same, and the diameter may be slightly smaller than that.

１０、２０…ゆるみ止めボルト
１１、２１…頭部
１２、２２…軸部
１３、２３…止めネジ用ネジ穴
２４…第２穴
１５、２５…止めネジ
１６…ブロック
１７…ネジ穴
１８…ワッシャ
２６…板
２７…ナット DESCRIPTION OF SYMBOLS 10, 20 ... Locking bolt 11, 21 ... Head 12, 22 ... Shaft part 13, 23 ... Screw hole 24 for set screw ... Second hole 15, 25 ... Set screw 16 ... Block 17 ... Screw hole 18 ... Washer 26 ... Plate 27 ... Nut

Claims (4)

頭部端面から軸部側面にかけて斜行する、止めネジ用のネジ穴を有することを特徴とするゆるみ止めボルト。   A loosening bolt having a screw hole for a set screw that is inclined from a head end surface to a shaft side surface. 頭部端面から軸部内部にかけて設けられた、止めネジ用のネジ穴と、該ネジ穴側から見たときに該ネジ穴よりも小さい断面を有する、軸部端面から前記ネジ穴に向けて設けられた第２穴とを有することを特徴とするゆるみ止めボルト。   A screw hole for a set screw provided from the head end surface to the inside of the shaft portion and a cross section smaller than the screw hole when viewed from the screw hole side, provided from the shaft end surface toward the screw hole. And a second bolt for preventing loosening. 前記第２穴が前記ネジ穴よりも小径の穴である請求項２に記載のゆるみ止めボルト。   The locking bolt according to claim 2, wherein the second hole is a hole having a smaller diameter than the screw hole. 前記第２穴が前記ネジ穴とは中心がズレた同径又はそれよりも大径の穴である請求項２に記載のゆるみ止めボルト。   3. The locking bolt according to claim 2, wherein the second hole is a hole having the same diameter or larger diameter than the screw hole.
JP2019103672A 2019-06-03 2019-06-03 Loosening prevention bolt Withdrawn JP2019143814A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019103672A JP2019143814A (en) 2019-06-03 2019-06-03 Loosening prevention bolt
JP2019137957A JP6651244B2 (en) 2019-06-03 2019-07-26 Locking bolt set

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Application Number Priority Date Filing Date Title
JP2019103672A JP2019143814A (en) 2019-06-03 2019-06-03 Loosening prevention bolt

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JP2019143814A true JP2019143814A (en) 2019-08-29

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JP2019103672A Withdrawn JP2019143814A (en) 2019-06-03 2019-06-03 Loosening prevention bolt
JP2019137957A Expired - Fee Related JP6651244B2 (en) 2019-06-03 2019-07-26 Locking bolt set

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JP2019178786A (en) 2019-10-17
JP6651244B2 (en) 2020-02-19

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