JP5712408B2

JP5712408B2 - Locking bolt

Info

Publication number: JP5712408B2
Application number: JP2012162044A
Authority: JP
Inventors: 貢二飯島
Original assignee: 有限会社飯島製作所
Priority date: 2012-07-03
Filing date: 2012-07-03
Publication date: 2015-05-07
Anticipated expiration: 2032-07-03
Also published as: JP2014013071A

Description

本発明は、被締結部材を締め付けた後、ナットの緩みを解消することができるロック式ボルトに関する。The present invention is, after clamping the workpieces relates to locking bolt which can eliminate the loosening of the nut.

一般的に、二つ以上の部材を結合するにはボルトとナットが使用される。部材を結合するには、被締結部材の貫通孔にボルトを挿入させ、ボルトの先端よりナットを螺着させてナットを締め付ける結合させる。 Generally, bolts and nuts are used to connect two or more members. In order to connect the members, a bolt is inserted into the through hole of the member to be fastened, and the nut is screwed from the tip of the bolt to tighten the nut.

しかし、時間が経につれて、振動の発生や部材の変形によりナットが緩み、締付効力が低下するという問題が発生する。そのため、定期的に検査を行いナットの再締付を実施しなければならなかった。 However, as time goes on, there is a problem that the nut is loosened due to the occurrence of vibration or deformation of the member, and the tightening effect is lowered. Therefore, it was necessary to perform regular inspections and retighten the nuts.

それらの課題を解決する従来技術として、激しく振動する器機等に使用する、耐振用の締め付けロックボルト装置であって、ボルトの締め込み及び取り外しの時間を短縮する締め付けロックボルト装置がある（例えば特許文献１参照）。
上掲特許文献１の締め付けロックボルト装置は、ボルトとその中心に穿設した中心穴に挿入する先端に膨出部を有するピンとから成り、ボルトはその先端部をテーパ状に形成し、ネジ部を上部と先端下部の２箇所に分かち、その中間部をネジを欠除した部分とし、軸芯部にピンを挿通する有底穴を穿設し、ボルト先端テーパ部の中腹部まで縦方向に切り込みを（前記有底穴の底より高い位置まで）入れ、前記上部のネジ部のネジの切削長さを、略ナットのネジの長さとし、下部テーパ部分のネジを、ボルトの中心孔にピンを圧挿入した状態で、ネジが上部のネジと同様のピッチのネジに形成し、前記上部ネジと下部ネジとの中間部をネジの欠除した部分としたことを特徴とする。
実用新案登録第３０２５６１５号公報 As a conventional technique for solving these problems, there is a tightening lock bolt device for vibration resistance used for a device that vibrates vigorously and shortens the time for tightening and removing the bolt (for example, patent) Reference 1).
The tightening lock bolt device of the above-mentioned Patent Document 1 is composed of a bolt and a pin having a bulging portion at the tip inserted into a center hole drilled in the center thereof, and the bolt has a tip portion formed in a tapered shape, and a screw portion. Is divided into two parts, the upper part and the lower part of the tip, and the middle part is the part from which the screw is removed, and a hole with a bottom is inserted through the shaft core to the middle part of the bolt tip taper. Insert a notch (up to a position higher than the bottom of the bottomed hole), set the cutting length of the upper threaded portion to the length of the nut screw, and pin the lower tapered portion screw into the center hole of the bolt. The screw is formed into a screw having the same pitch as that of the upper screw, and the intermediate portion between the upper screw and the lower screw is a portion where the screw is removed.
Utility Model Registration No. 3025615

しかしながら、上掲特許文献１の締め付けロックボルトは、ボルトに中心穴を貫通させた状態で穿孔させる必要があり、加工の際に多くの手間が必要となった。また締め込みには、膨出部を有するピンを使用するため材料コストが掛るという問題も生じた。 However, the tightening lock bolt disclosed in the above-mentioned Patent Document 1 needs to be drilled in a state where the center hole is passed through the bolt, and a lot of labor is required for processing. Further, tightening uses a pin having a bulging portion, which causes a problem of material cost.

そこで本発明は上記の点に鑑み、ボルトとナットで被締結部材を締め付けた後、締付ネジを締め付けることにより、ナットの緩みを解消することができるロック式ボルトを提供することにある。The present invention has been made in view of the above points, after tightening the workpieces with a bolt and a nut, by tightening the screw tightening is to provide a lock bolt which can eliminate the loosening of the nut.

Means for solving the solution

上記課題を解決するために本発明のロック式ボルトは、軸部の先方から頭部方向に向け穿孔された穿孔部と、この穿孔部は円柱状を呈し前記軸部の中芯部で前記軸部の略中央部分まで延設され、前記穿孔部の内周に螺刻した雌ネジと、前記穿孔部の開口部近傍に形成された切込と、前記穿孔部に螺合される締付ネジと、前記穿孔部の開口部にテーパ部を形成し、前記切込は、穿孔部の開口部近傍に複数穿孔されている、ことを特徴とする。In order to solve the above-described problems, the lock bolt of the present invention includes a perforated portion that is perforated from the front of the shaft portion toward the head, and the perforated portion has a columnar shape, and the shaft at the core portion of the shaft portion. A female screw that extends to substantially the center of the hole and is threaded on the inner periphery of the perforated part, a notch formed in the vicinity of the opening of the perforated part, and a tightening screw that is screwed into the perforated part And a taper portion is formed in the opening of the perforated portion, and a plurality of the notches are perforated in the vicinity of the opening of the perforated portion .

Effect of the invention

軸部の先方から頭部方向に向け穿孔された穿孔部と、穿孔部の内周に螺刻した雌ネジと、穿孔部の開口部近傍に形成された切込とを備えるボルトと、前記穿孔部に螺合される締付ネジとを備えることにより、部品点数を削減できるとともに、製造コストも軽減できる。 A bolt including a perforated portion perforated from the front of the shaft portion toward the head, a female screw threaded on the inner periphery of the perforated portion, and a notch formed in the vicinity of the opening of the perforated portion; By providing the fastening screw that is screwed to the part, the number of parts can be reduced and the manufacturing cost can be reduced.

また、ボルトに被締付部材を配置させ、次いでナットにて被締付部材を締め付けた後、穿孔部に締付ネジをねじ込みナットを締め付けることにより、容易に、且つ確実にナットをロックすることができる。 In addition, it is possible to easily and surely lock the nut by placing the member to be tightened on the bolt and then tightening the member to be tightened with a nut and then screwing the tightening screw into the perforated part and tightening the nut. Can do.

本発明におけるロック式ボルトの全体斜視図である。It is a whole perspective view of the lock type bolt in the present invention. 前記ロック式ボルトの使用状態の斜視図である。It is a perspective view of the use condition of the lock bolt. （ａ）はロック式ボルトの側面図、（ｂ）はその断面図である。(A) is a side view of a lock type bolt, (b) is the sectional view. （ａ）はロック式ボルトの締め付け状態の側面図、（ｂ）はその断面図である。(A) is a side view of the tightened state of the lock-type bolt, and (b) is a sectional view thereof. ロック式ボルトの拡大断面図である。It is an expanded sectional view of a lock type bolt. 締付ネジを締め付けた状態の拡大断面図である。It is an expanded sectional view of the state where the tightening screw was tightened.

本発明のロック式ボルトは、ボルトとナットで被締結部材を締め付けた後、締付ネジを締め付けることにより、ナットの緩みを解消することができることを特徴とするものである。
以下、本発明のロック式ボルトにおける実施の形態を図面に基づいて説明する。The lock-type bolt of the present invention is characterized in that the looseness of the nut can be eliminated by tightening the tightening screw after the member to be fastened is tightened with the bolt and the nut.
Hereinafter, embodiments of the lock bolt according to the present invention will be described with reference to the drawings.

図示する本発明のロック式ボルト１は、軸部１１の先方から頭部１２方向に向け穿孔された穿孔部１３と、穿孔部１３の内周に螺刻した雌ネジ１４と、穿孔部１３の開口部１６近傍に形成された切込１５とを備えるボルト１０と、前記穿孔部１３に螺合される締付ネジ２０とを備えることを特徴とする。 The locking bolt 1 of the present invention shown in the figure includes a perforated portion 13 perforated from the front of the shaft portion 11 toward the head 12, a female screw 14 threaded on the inner periphery of the perforated portion 13, and a perforated portion 13. A bolt 10 including a notch 15 formed in the vicinity of the opening 16 and a tightening screw 20 screwed into the perforated portion 13 are provided.

軸部１１はやや長尺に形成されており、周囲にはナット３０の雌ネジ３１と螺合する雄ネジ１４が螺刻されている。また前記軸部１１の一端には、多角形状（図中六角形）の頭部１２が具備されている。 The shaft portion 11 is formed to be slightly long, and a male screw 14 that is screwed into the female screw 31 of the nut 30 is threaded around the shaft portion 11. In addition, a polygonal (hexagonal in the figure) head 12 is provided at one end of the shaft 11.

また特に、前記軸部１１には、軸部１１の先方から頭部１２方向に向け穿孔部１３が穿孔されている。穿孔部１３は円柱状を呈しており、軸部１１の中芯部であって、軸部１１の略中央部分まで延設されている。また穿孔部１３の内周には、後述詳細の締付ネジ２０の雄ネジ２１に螺合する雌ネジ１４が螺刻されている。 Further, in particular, the shaft portion 11 is formed with a perforated portion 13 from the tip of the shaft portion 11 toward the head 12. The perforated part 13 has a columnar shape, and is a center part of the shaft part 11 and extends to a substantially central part of the shaft part 11. Further, on the inner periphery of the perforated portion 13, a female screw 14 that is screwed into a male screw 21 of a tightening screw 20 described later in detail is threaded.

また前記軸部１１の先方であって、前記穿孔部１３の開口部１６には、テーパ部１７が形成されている。テーパ部１７は、締付ネジ２０の傾斜部２２に係合する状態に傾斜している。 Further, a taper portion 17 is formed in the opening portion 16 of the perforated portion 13 on the tip of the shaft portion 11. The tapered portion 17 is inclined so as to engage with the inclined portion 22 of the tightening screw 20.

切込１５は、穿孔部１３の開口部１６近傍に複数穿孔されている。前記切込１５は、穿孔部１３の開口部１６から頭部１２の方向に適宜長さに亘り形成されている。また前記切込１５は、軸部１１の開口部１６近傍に４箇所形成することが好ましい。 A plurality of cuts 15 are perforated near the opening 16 of the perforated part 13. The notch 15 is formed over an appropriate length in the direction from the opening 16 of the perforated part 13 to the head 12. Moreover, it is preferable to form four said notches 15 in the vicinity of the opening 16 of the shaft part 11.

締付ネジ２０は、前記軸部１１の穿孔部１３に螺着されるもので、傾斜部２２を有する頭部２３と、頭部２３に連接された雄ネジ２１とからなる。また締付ネジ２０の頭部２３中央部分には、六角レンチ等が装着される凹部２４が形成されている。 The tightening screw 20 is screwed into the perforated portion 13 of the shaft portion 11 and includes a head 23 having an inclined portion 22 and a male screw 21 connected to the head 23. In addition, a concave portion 24 to which a hexagon wrench or the like is attached is formed in the central portion of the head 23 of the tightening screw 20.

次に、図３乃至図６に基づいて本発明のロック式ボルトのロック方法を説明する。
先ず、被締結部材４０に開孔部を形成し、ボルト１０の軸部１１を挿通させる。次に図３に示すように、汎用のナット３０を軸部１１に螺着させ、通常のように被締結部材４０を締め付ける。Next, a lock bolt locking method according to the present invention will be described with reference to FIGS.
First, an opening is formed in the fastened member 40 and the shaft 11 of the bolt 10 is inserted. Next, as shown in FIG. 3, a general-purpose nut 30 is screwed onto the shaft portion 11, and the fastened member 40 is tightened as usual.

ナット３０にて被締結部材４０を締め付けた後、締付ネジ２０をボルト１０の穿孔部１３に挿入させ、図４に示すように、穿孔部１３のテーパ部１７と締付ネジ２０の傾斜部２２が接合するまで締付ネジ２０を締め付ける。 After tightening the fastened member 40 with the nut 30, the tightening screw 20 is inserted into the perforated portion 13 of the bolt 10, and as shown in FIG. 4, the tapered portion 17 of the perforated portion 13 and the inclined portion of the tightening screw 20. The tightening screw 20 is tightened until the 22 is joined.

さらに締付ネジ２０を締め付けると、図６に示すように、締付ネジ２０は先方に送り込まれるとともに、締付ネジ２０の傾斜部２２が穿孔部１３のテーパ部１７を外周方向へ押圧し、穿孔部１３に形成された切込１５を矢印方向に拡張させる。 When the tightening screw 20 is further tightened, as shown in FIG. 6, the tightening screw 20 is fed forward, and the inclined portion 22 of the tightening screw 20 presses the tapered portion 17 of the perforated portion 13 in the outer circumferential direction. The notch 15 formed in the perforated part 13 is expanded in the arrow direction.

締付ネジ２０にて穿孔部１３を拡張させることにより、ボルト１０の軸部１１に螺着されたナット３０は、被締結部材４０をさらに締め付けるとともに、完全にロックされた状態に締結される。 By extending the perforated part 13 with the tightening screw 20, the nut 30 screwed to the shaft part 11 of the bolt 10 further tightens the fastened member 40 and is fastened in a completely locked state.

上述の如く、本発明のロック式ボルトおよびロック方法によれば、容易に、且つ確実にナットを締結することができるとともに、部品点数を削減できて製造コストも軽減できる。 As described above, according to the locking bolt and the locking method of the present invention, the nut can be easily and reliably fastened, the number of parts can be reduced, and the manufacturing cost can be reduced.

１ロック式ボルト
１０ボルト
１１軸部
１２頭部
１３穿孔部
１４雄ネジ
１５切込
１６開口部
１７テーパ部
２０締付ネジ
２１雄ネジ
２２傾斜部
２３頭部
２４凹部
３０ナット
３１雌ネジ
４０被締結部材DESCRIPTION OF SYMBOLS 1 Locking bolt 10 Bolt 11 Shaft part 12 Head part 13 Perforated part 14 Male thread 15 Notch 16 Opening part 17 Taper part 20 Tightening screw 21 Male screw 22 Inclined part 23 Head part 24 Recess 30 Nut 31 Female screw 40 Fastened Element

Claims

A perforated portion perforated from the front of the shaft portion toward the head, and the perforated portion is formed in a columnar shape and extends to a substantially central portion of the shaft portion at a center portion of the shaft portion; A female screw threaded around, a notch formed in the vicinity of the opening of the perforated part, a tightening screw screwed into the perforated part, and a tapered part formed in the opening of the perforated part, A plurality of the notches are perforated near the opening of the perforated part .