JPH0714216U - Rock bolt - Google Patents
Rock boltInfo
- Publication number
- JPH0714216U JPH0714216U JP4578493U JP4578493U JPH0714216U JP H0714216 U JPH0714216 U JP H0714216U JP 4578493 U JP4578493 U JP 4578493U JP 4578493 U JP4578493 U JP 4578493U JP H0714216 U JPH0714216 U JP H0714216U
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- groove
- fastened
- bolt head
- head
- 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.)
- Withdrawn
Links
Landscapes
- Bolts, Nuts, And Washers (AREA)
Abstract
(57)【要約】
【目的】 締め付けた後、軸線に直交する方向の振動等
の外力に対しても緩みが生じにくい上に、座金を使用す
ることなく確実にロックすることができるロックボルト
を提供することを目的とする。
【構成】 ボルト締結時にボルト頭部１０を回転させる
と、ボルト頭部１０のボルト本体１１との境界部に形成
された第１の溝１０ｃと、この第１の溝１０ｃから半径
方向外方に形成された第２の溝１０ｄとで囲まれたボル
ト頭部１０の端面（下面）１０ｂのうち、テーパ面１０
ｅの後方側の端面（当接面）１０ｆが被締結部材２に食
い込む。
(57) [Summary] [Purpose] After tightening, a lock bolt that does not easily loosen even with external force such as vibration in the direction orthogonal to the axis and that can be securely locked without using a washer. The purpose is to provide. [Structure] When the bolt head 10 is rotated at the time of bolt fastening, a first groove 10c formed at a boundary portion of the bolt head 10 with the bolt body 11 and a radial direction outward from the first groove 10c. Of the end surface (lower surface) 10b of the bolt head 10 surrounded by the formed second groove 10d, the tapered surface 10
An end surface (contact surface) 10f on the rear side of e bites into the fastened member 2.
Description
【０００１】[0001]
本考案は、締結後に緩みが生じにくく、かつロック効果の大きいロックボルト に関する。 The present invention relates to a lock bolt that does not easily loosen after fastening and has a large locking effect.
【０００２】[0002]
例えば、図６に示すように、一対の部材１，２間をボルト３によって締結する 場合には、第１の部材１にネジ孔１ａを形成し、第２の部材２に貫通孔２ａを形 成すると共に、ボルト３を第２の部材２の貫通孔２ａに挿通して第１の部材１の ネジ孔１ａにねじ込むことにより、両部材１，２を互いに固定するようにしてい る。ところで、このようにしてボルト３により両部材１，２を締結した場合には 、時間の経過と共に、ボルト３が緩んでくるという問題がある。そこで、このボ ルト３の緩みを防止するものとして、一般に、ボルト３と第２の部材２との間に 座金を介在させることが行われている。 For example, as shown in FIG. 6, when fastening a pair of members 1 and 2 with a bolt 3, a screw hole 1a is formed in the first member 1 and a through hole 2a is formed in the second member 2. At the same time, the bolt 3 is inserted into the through hole 2a of the second member 2 and screwed into the screw hole 1a of the first member 1, so that the two members 1 and 2 are fixed to each other. By the way, when both members 1 and 2 are fastened with the bolt 3 in this way, there is a problem that the bolt 3 becomes loose with the passage of time. Therefore, as a means for preventing the loosening of the bolt 3, a washer is generally interposed between the bolt 3 and the second member 2.
【０００３】[0003]
しかしながら、上述したように座金によってボルトの緩みを防止しようとした 場合、ボルトの軸線に直交する方向の振動に対しては緩み止め効果が余り期待で きないという問題がある。しかも、原子炉内等で使用する場合には、脱落してル ーズパーツになり易い座金の使用は好ましくない。 However, when the washer is used to prevent the bolt from loosening as described above, there is a problem in that the anti-loosening effect cannot be expected so much with respect to vibration in a direction orthogonal to the axis of the bolt. Moreover, when it is used in a nuclear reactor or the like, it is not preferable to use a washer that easily falls off and becomes a loose part.
【０００４】 本考案は、上記事情に鑑みてなされたもので、その目的とするところは、締め 付けた後、軸線に直交する方向の振動等の外力に対しても緩みが生じにくい上に 、座金を使用することなく確実にロックすることができるロックボルトを提供す ることにある。The present invention has been made in view of the above circumstances, and an object of the present invention is that after tightening, loosening is unlikely to occur against external force such as vibration in a direction orthogonal to the axis, and It is to provide a lock bolt that can be securely locked without using a washer.
【０００５】[0005]
上記目的を達成するために、本考案の請求項１は、ボルト頭部のボルト本体と の境界部に第１の溝を形成し、この第１の溝から半径方向外方に第２の溝を形成 したものである。また、本考案の請求項２は、第１，第２の溝に囲まれた上記ボ ルト頭部の端面であって、ボルト締結時の回転方向前方側にテーパ面を形成した ものである。さらに、本考案の請求項３は、第１，第２の溝に囲まれたボルト頭 部の端面であって、少なくともボルト締結時の被締結部材との当接面に硬化処理 を施したものである。 In order to achieve the above object, the first aspect of the present invention provides a first groove at the boundary of the bolt head with the bolt body, and a second groove radially outward from the first groove. Is formed. According to a second aspect of the present invention, an end face of the bolt head surrounded by the first and second grooves is formed with a taper face on the front side in the rotation direction when the bolt is fastened. Further, claim 3 of the present invention is the end surface of the bolt head portion surrounded by the first and second grooves, at least the contact surface with the member to be fastened at the time of bolt fastening is subjected to hardening treatment. Is.
【０００６】[0006]
本考案の請求項１にあっては、ボルト締結時にボルト頭部を回転させると、ボ ルト頭部のボルト本体との境界部に形成された第１の溝と、この第１の溝から半 径方向外方に形成された第２の溝とで囲まれたボルト頭部の端面が被締結部材に 食い込むことにより、ボルトの軸線に直交する方向の振動に対して滑らなくなり 、また、ボルトの締め付け力の反力もボルトの弾性力と相俟って上記食い込み部 分の圧力となることにより、ボルトの緩み防止となる。さらに、本考案の請求項 ２にあっては、第１，第２の溝に囲まれた上記ボルト頭部の端面の、ボルト締結 時の回転方向前方側に形成したテーパ面によって、ボルト締結時に該テーパ面が 被締結部材から逃げて接触干渉しないため、ボルト本体が滑らかにねじ込まれ、 かつこのテーパ面の後方側の端面が被締結部材に食い込み易くなる。また、本考 案の請求項３にあっては、少なくともボルト締結時の被締結部材との当接面に施 された硬化処理によって、より一層ボルト締結時に該当接面が被締結部材に食い 込む。 According to the first aspect of the present invention, when the bolt head is rotated when the bolt is fastened, the first groove formed at the boundary between the bolt head and the bolt body and the half groove from the first groove. The end face of the bolt head, which is surrounded by the second groove formed on the outside in the radial direction, bites into the member to be fastened, so that it does not slip with respect to vibration in the direction orthogonal to the axis of the bolt, and The reaction force of the tightening force, together with the elastic force of the bolt, creates the pressure for the biting part, preventing the bolt from loosening. Further, according to claim 2 of the present invention, the taper surface formed on the front side of the end portion of the bolt head surrounded by the first and second grooves in the rotation direction at the time of bolt fastening makes it possible to perform bolt fastening. Since the tapered surface escapes from the member to be fastened and does not interfere with the contact, the bolt main body is smoothly screwed in, and the rear end surface of the tapered surface easily bites into the member to be fastened. Further, in claim 3 of the present proposal, at least the corresponding contact surface bites into the member to be fastened at the time of bolt fastening by the hardening treatment applied to the contact surface with the member to be fastened at the time of bolt fastening. .
【０００７】[0007]
以下、図１ないし図５に基づいて本考案の実施例を説明する。 An embodiment of the present invention will be described below with reference to FIGS.
【０００８】 図１ないし図４において符号１０は、本考案の一実施例である六角穴つきボル トのボルト頭部であり、このボルト頭部１０の上面には六角穴１０ａが形成され ている。そして、上記ボルト頭部１０の下面１０ｂにはボルト本体１１が一体的 に形成されており、このボルト本体１１にはネジ部１１ａが形成されている。ま た、上記ボルト頭部１０の、上記ボルト本体１１との境界部にはリング状の第１ の溝１０ｃが形成されており、この第１の溝１０ｃから半径方向外方に等間隔に ４つの第２の溝１０ｄが形成されている。これらの第２の溝１０ｄは、上記第１ の溝１０ｃの深さより深く形成されている。そして、これらの溝１０ｃ，１０ｄ に囲まれた上記ボルト頭部１０の下面１０ｂであって、ボルト締結時の回転方向 前方側には、テーパ面１０ｅが形成されており、このテーパ面１０ｅに連なる上 記ボルト締結時の回転方向後方側の下面１０ｂは、上記第２の部材２と接触する 当接面１０ｆとされている。さらに、この当接面１０ｆ部分は硬化処理が施され ている。1 to 4, reference numeral 10 denotes a bolt head of a bolt with a hexagonal hole which is an embodiment of the present invention, and a hexagonal hole 10a is formed on the upper surface of the bolt head 10. . A bolt main body 11 is integrally formed on the lower surface 10b of the bolt head 10 and a screw portion 11a is formed on the bolt main body 11. In addition, a ring-shaped first groove 10c is formed at the boundary between the bolt head 10 and the bolt body 11, and the first groove 10c is radially outwardly equidistant from the first groove 10c. Two second grooves 10d are formed. The second grooves 10d are formed deeper than the depth of the first grooves 10c. A taper surface 10e is formed on the lower surface 10b of the bolt head 10 surrounded by the grooves 10c and 10d and on the front side in the direction of rotation when the bolt is fastened. The taper surface 10e is continuous with the taper surface 10e. The lower surface 10b on the rear side in the rotation direction when the above bolts are fastened is an abutting surface 10f that comes into contact with the second member 2. Further, the contact surface 10f is hardened.
【０００９】 上記のように構成されたロックボルト１２を用いて、一対の部材１，２を締結 する場合には、従来同様、ボルト本体１１を第２の部材２の貫通孔２ａに挿通し て第１の部材１のネジ孔１ａにボルト本体１１のネジ部１１ａをねじ込むことに より、両部材１，２を互いに固定する。この場合、上記ロックボルト１２を回転 させて締め付けると、硬化処理を施したボルト頭部１０の当接面１０ｆが第２の 部材２に食い込む。この結果、ロックボルト１２の軸線に直交する方向の振動に 対して、ボルト頭部１０の下面１０ｂと第２の部材２との間で滑りを生じること がなく、また、ネジ部１１ａから当接面１０ｆまでの長さに依存するボルトの弾 性力が上記第１の溝１０ｃを形成することにより増大することと、ロックボルト １２の締め付け力に対する反力とが相俟って、上記ロックボルト１２と第２の部 材２との接触部の圧力となって、ロックボルト１２の緩みが確実に防止される。 さらに、上記ロックネジ１２に緩む方向の回転力または振動が加わっても、ボル ト頭部１０の当接面１０ｆと、これに連なる第２の溝１０ｄを構成する内壁面１ ０ｇとの間の稜辺部１０ｈが第２の部材２に一層食い込むようになるから、強固 にロックされて緩むことがない。When fastening the pair of members 1 and 2 using the lock bolt 12 configured as described above, the bolt body 11 is inserted into the through hole 2 a of the second member 2 as in the conventional case. By screwing the screw portion 11a of the bolt body 11 into the screw hole 1a of the first member 1, the members 1 and 2 are fixed to each other. In this case, when the lock bolt 12 is rotated and tightened, the contact surface 10f of the hardened bolt head 10 bites into the second member 2. As a result, the vibration does not occur between the lower surface 10b of the bolt head 10 and the second member 2 with respect to the vibration in the direction orthogonal to the axis of the lock bolt 12, and the screw portion 11a abuts. The elastic force of the bolt depending on the length up to the surface 10f is increased by forming the first groove 10c, and the reaction force against the tightening force of the lock bolt 12 is combined with the lock bolt. The pressure at the contact portion between the second bolt 2 and the second member 2 serves to reliably prevent the lock bolt 12 from loosening. Further, even if a rotational force or vibration in a loosening direction is applied to the lock screw 12, a ridge between the contact surface 10f of the bolt head 10 and the inner wall surface 10g forming the second groove 10d continuous with the contact surface 10f. Since the side portion 10h bites further into the second member 2, it is firmly locked and does not loosen.
【００１０】 なお、上記実施例においては、ボルト頭部１０の当接面１０ｆと、これに連な る第２の溝１０ｄを構成する内壁面１０ｇとが互いに直交する構成にて説明した が、図５に示すように、上記当接面１０ｆと内壁面１０ｇとが鋭角に交差するよ うに構成してもよく、これによってさらに一層食い込み効果を向上させることが できる。In the above embodiment, the contact surface 10f of the bolt head 10 and the inner wall surface 10g forming the second groove 10d connected to the contact surface 10f are orthogonal to each other. As shown in FIG. 5, the contact surface 10f and the inner wall surface 10g may be configured to intersect each other at an acute angle, which can further improve the bite effect.
【００１１】[0011]
以上説明したように、本考案の請求項１は、ボルト頭部のボルト本体との境界 部に第１の溝を形成し、この第１の溝から半径方向外方に第２の溝を形成したも のであるから、ボルト締結時にボルト頭部を回転させると、上記ボルト頭部の端 面が被締結部材に食い込むことにより、ボルトの軸線に直交する方向の振動に対 して滑らなくなり、また、ボルトの締め付け力の反力もボルトの弾性力と相俟っ て上記食い込み部分の圧力となることにより、締め付けた後、軸線に直交する方 向の振動等の外力に対しても緩みが生じにくい上に、座金を使用することなく確 実にロックすることができる。さらに、本考案の請求項２は、第１，第２の溝に 囲まれた上記ボルト頭部の端面であって、ボルト締結時の回転方向前方側にテー パ面を形成したものであるから、ボルト締結時に該テーパ面が被締結部材から逃 げて接触干渉しないため、ボルト本体が滑らかにねじ込まれ、かつこのテーパ面 の後方側の端面が被締結部材に食い込み易くなる。また、本考案の請求項３は、 第１，第２の溝に囲まれたボルト頭部の端面であって、少なくともボルト締結時 の被締結部材との当接面に硬化処理を施したものであるから、上記当接面に施さ れた硬化処理によって、より一層ボルト締結時に該当接面が被締結部材に食い込 むようにできて、ボルトの緩みを確実に防止することができる。 As described above, according to the first aspect of the present invention, the first groove is formed at the boundary between the bolt head and the bolt body, and the second groove is formed radially outward from the first groove. Therefore, when the bolt head is rotated when tightening the bolt, the end surface of the bolt head bites into the member to be fastened, preventing it from slipping against vibration in the direction orthogonal to the axis of the bolt, and , The reaction force of the tightening force of the bolt, together with the elastic force of the bolt, also acts as the pressure at the biting part, so that after tightening, loosening is less likely to occur against external force such as vibration in the direction orthogonal to the axis. On top, it can be locked securely without the use of washers. Further, according to claim 2 of the present invention, a taper surface is formed on the end face of the bolt head surrounded by the first and second grooves, and is formed on the front side in the rotation direction when the bolt is fastened. Since the tapered surface escapes from the member to be fastened and does not interfere with the contact when the bolt is fastened, the bolt main body is smoothly screwed in, and the rear end surface of the tapered surface easily bites into the fastened member. According to claim 3 of the present invention, the end surface of the bolt head surrounded by the first and second grooves, at least the contact surface with the member to be fastened when the bolt is fastened, is subjected to a hardening treatment. Therefore, the hardening treatment applied to the abutting surface allows the abutting surface to further bite into the member to be fastened when the bolt is fastened, and the loosening of the bolt can be reliably prevented.
【図１】本考案の第１実施例を示す正面図である。FIG. 1 is a front view showing a first embodiment of the present invention.
【図２】図１の下面図である。FIG. 2 is a bottom view of FIG.
【図３】図１の一部を断面視した正面図である。FIG. 3 is a front view in which a part of FIG. 1 is viewed in section.
【図４】図１のロックボルトによって部材を締結した状
態を示す断面図である。FIG. 4 is a cross-sectional view showing a state where members are fastened by the lock bolt of FIG.
【図５】本考案の第２実施例を示す正面図である。FIG. 5 is a front view showing a second embodiment of the present invention.
【図６】従来のボルトによって部材を締結した状態を示
す断面図である。FIG. 6 is a cross-sectional view showing a state in which members are fastened with conventional bolts.
１０ ボルト頭部 １０ｂ 下面（端面） １０ｃ 第１の溝 １０ｄ 第２の溝 １０ｅ テーパ面 １０ｆ 当接面 １１ ボルト本体 １２ ロックボルト 10 bolt head 10b lower surface (end surface) 10c first groove 10d second groove 10e taper surface 10f contact surface 11 bolt body 12 lock bolt
Claims (3)
１の溝を形成し、この第１の溝から半径方向外方に第２
の溝を形成したことを特徴とするロックボルト。1. A first groove is formed in a boundary portion between a bolt head and a bolt body, and a second groove is formed radially outward from the first groove.
A lock bolt characterized by having a groove formed therein.
部の端面であって、ボルト締結時の回転方向前方側にテ
ーパ面を形成したことを特徴とする請求項１記載のロッ
クボルト。2. A taper surface is formed on an end surface of the bolt head surrounded by the first and second grooves, the taper surface being formed on a front side in a rotation direction when the bolt is fastened. Rock bolt.
端面であって、少なくともボルト締結時の被締結部材と
の当接面に硬化処理を施したことを特徴とする請求項１
または２記載のロックボルト。3. A hardening treatment is applied to an end surface of a bolt head surrounded by the first and second grooves, and at least a contact surface with a member to be fastened when fastening the bolt. Item 1
Or the lock bolt described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4578493U JPH0714216U (en) | 1993-08-23 | 1993-08-23 | Rock bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4578493U JPH0714216U (en) | 1993-08-23 | 1993-08-23 | Rock bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0714216U true JPH0714216U (en) | 1995-03-10 |
Family
ID=12728912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4578493U Withdrawn JPH0714216U (en) | 1993-08-23 | 1993-08-23 | Rock bolt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0714216U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013011755A1 (en) * | 2011-07-15 | 2013-01-24 | 株式会社ヤマザキアクティブ | Locking bolt and method for manufacturing same |
| JP2013024418A (en) * | 2012-04-11 | 2013-02-04 | Yamazaki Active:Kk | Lock bolt and method of manufacturing the same |
| JP2018012997A (en) * | 2016-07-21 | 2018-01-25 | 高久 徳永 | Hanger device for suspended ceiling |
-
1993
- 1993-08-23 JP JP4578493U patent/JPH0714216U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013011755A1 (en) * | 2011-07-15 | 2013-01-24 | 株式会社ヤマザキアクティブ | Locking bolt and method for manufacturing same |
| CN103649570B (en) * | 2011-07-15 | 2015-10-21 | 株式会社山崎爱科蒂芙 | The manufacture method of chek bolt |
| CN105020238A (en) * | 2011-07-15 | 2015-11-04 | 株式会社山崎爱科蒂芙 | Locking bolt |
| KR20170027870A (en) * | 2011-07-15 | 2017-03-10 | 가부시키가이샤 야마자키 액티브 | Locking bolt and method for manufacturing same |
| JP2013024418A (en) * | 2012-04-11 | 2013-02-04 | Yamazaki Active:Kk | Lock bolt and method of manufacturing the same |
| JP2018012997A (en) * | 2016-07-21 | 2018-01-25 | 高久 徳永 | Hanger device for suspended ceiling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19971106 |