JPH0534327Y2 - - Google Patents
Info
- Publication number
- JPH0534327Y2 JPH0534327Y2 JP1986176519U JP17651986U JPH0534327Y2 JP H0534327 Y2 JPH0534327 Y2 JP H0534327Y2 JP 1986176519 U JP1986176519 U JP 1986176519U JP 17651986 U JP17651986 U JP 17651986U JP H0534327 Y2 JPH0534327 Y2 JP H0534327Y2
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- fastened
- receiving member
- contact
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Connection Of Plates (AREA)
- Bolts, Nuts, And Washers (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、例えばアルミニウム製のシリンダヘ
ツドとシリンダブロツクとをボルトで相互に締結
するのに用いて好適なボルト締結体構造に関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bolt fastening body structure suitable for use in, for example, fastening a cylinder head and a cylinder block made of aluminum to each other with bolts.
一般に、第７図に示すように、２枚の被締結体
１，２にボルト３を貫通させボルト３を締め付け
ることにより、これらの被締結体１，２を相互に
締結させることが種々行なわれている。
Generally, as shown in FIG. 7, various methods are used to connect the two objects 1 and 2 to each other by passing a bolt 3 through them and tightening the bolt 3. ing.
なお、第７図において、符号１ａ，２ａはボル
ト穴、４はナツト、５は座金を示す。 In FIG. 7, numerals 1a and 2a indicate bolt holes, 4 indicates a nut, and 5 indicates a washer.
しかしながら、このようなボルト締結体構造で
は、ボルト３の軸力が大きいような場合、被締結
体１に符号Ａで示すボルト座面部分が降伏する
（へたる）ことがあり、その結果ボルト３がゆる
んでしまうおそれがある。かかる現象は被締結体
１がアルミニウムのごとき柔らかい金属でできて
いる場合に顕著である。
However, in such a bolt fastening body structure, when the axial force of the bolt 3 is large, the bolt seating surface portion indicated by the symbol A on the fastened body 1 may yield (sag), and as a result, the bolt 3 There is a risk that it may come loose. This phenomenon is remarkable when the object to be fastened 1 is made of a soft metal such as aluminum.
そこで、このような場合には、座金５を大きく
して、面圧を下げることも考えられるが、レイア
ウト上、大きな座金を設けることができないこと
がある。 Therefore, in such a case, it may be possible to increase the size of the washer 5 to reduce the surface pressure, but it may not be possible to provide a large washer due to layout considerations.
本考案は、このような問題点を解決しようとす
るもので、大きな座金を入れなくても、被締結体
におけるボルト座面部分が降伏しないようにし
た、ボルト締結体構造を提供することを目的とす
る。 The present invention is an attempt to solve such problems, and aims to provide a bolt fastening body structure that prevents the bolt bearing surface of the fastened object from yielding even without inserting a large washer. shall be.
このため、本考案のボルト締結体構造は、ボル
トのねじ部が貫通する貫通孔を穿設されるととも
にボルト頭部と係合する第１の被締結体と、上記
ボルトのねじ部が貫通もしくは螺合する第２の被
締結体と、上記第１の被締結体における上記ボル
ト頭部との係合に埋設されるとともに上記第１の
被締結体よりも降伏応力の高い材料から成る受け
部材とをそなえ、少なくとも上記第１および第２
の被締結体を含む複数の被締結体を相互に締結す
るボルト締結体構造において、上記受け部材が上
記ボルト頭部と係合する第１の当接面と、同第１
の当接面に平行で上記第１の被締結体に当接する
第２の当接面と、両端がそれぞれ上記第１および
第２の当接面に開孔し且つ両当接面に垂直なボル
ト貫通孔とをそなえ、上記第２の当接面の外径が
上記ボルト頭部外径よりも大であり且つ上記第２
の当接面と上記第１の被締結体との接触面積が上
記第１の当接面と上記ボルト頭部との接触面積よ
りも大であることを特徴としている。
For this reason, the bolt fastening body structure of the present invention includes a first fastened body that has a through hole through which the threaded portion of the bolt passes and engages with the bolt head; A receiving member that is embedded in the engagement between the second fastened body and the bolt head of the first fastened body and is made of a material having a higher yield stress than the first fastened body. and at least the above first and second
In the bolt fastening body structure for mutually fastening a plurality of fastened objects including the fastened objects, the receiving member has a first contact surface that engages with the bolt head, and a first contact surface that engages with the bolt head;
a second contact surface parallel to the contact surface and in contact with the first object to be fastened; a bolt through hole, the outer diameter of the second contact surface is larger than the outer diameter of the bolt head;
The contact area between the contact surface and the first object to be fastened is larger than the contact area between the first contact surface and the bolt head.
上述の本考案のボルト締結体構造では、複数の
被締結体を相互に締結するに際し、ボルトを通し
てボルトを締め付けることが行なわれるが、被締
結体におけるボルト頭部との係合部に埋設された
受け部材にボルト軸力が作用するので、被締結体
におけるボルト座面部分が降伏することがなく、
これによりボルトもゆるむことがない。
In the bolt fastening body structure of the present invention described above, when a plurality of objects to be fastened are connected to each other, the bolts are passed through and tightened. Since the bolt axial force acts on the receiving member, the bolt bearing surface of the fastened object does not yield,
This prevents the bolts from loosening.
また、第２の当接面の外径がボルト頭部外径よ
りも大であり且つ第２の当接面と第１の被締結体
との接触面積が第１の当接面とボルト頭部との接
触面積よりも大となるよう構成されている。 Further, the outer diameter of the second abutting surface is larger than the outer diameter of the bolt head, and the contact area between the second abutting surface and the first object to be fastened is the same as that of the first abutting surface and the bolt head. The contact area is larger than the contact area with the other parts.
したがつて、大きな座金を入れなくてもボルト
軸力の伝達面積が大幅に増大し、ボルト座面部分
が降伏することがなく、ボルトの緩みが防止さ
れ、ボルト締結による信頼性が大幅に向上する。 Therefore, the transmission area of bolt axial force is greatly increased without inserting a large washer, the bolt seating surface does not yield, the bolt is prevented from loosening, and the reliability of bolt fastening is greatly improved. do.
以下、図面により本考案の実施例について説明
すると、第１，２図は本考案の第１実施例として
のボルト締結体構造を示すもので、第１図はその
断面図、第２図はその受け部材の斜視図であり、
第３，４図は本考案の第２実施例としてのボルト
締結体構造を示すもので、第３図はその断面図、
第４図はその受け部材の斜視図であり、第５，６
図は本考案の第３実施例としてのボルト締結体構
造を示すもので、第５図はその断面図、第６図は
その受け部材の斜視図であり、各図中同じ符号は
ほぼ同様の部分を示す。
Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. Figures 1 and 2 show the structure of a bolt fastening body as the first embodiment of the present invention. Figure 1 is a sectional view thereof, and Figure 2 is its sectional view. It is a perspective view of a receiving member,
Figures 3 and 4 show the structure of a bolt fastening body as a second embodiment of the present invention, and Figure 3 is a sectional view thereof;
FIG. 4 is a perspective view of the receiving member, and FIG.
The figures show a bolt fastening body structure as a third embodiment of the present invention, Fig. 5 is a sectional view thereof, and Fig. 6 is a perspective view of its receiving member. Show parts.
まず、第１，２図に示す第１実施例から説明す
る。 First, a first embodiment shown in FIGS. 1 and 2 will be explained.
第１図において、符号１はボルト３のりねじ部
が貫通する貫通孔１Ａを穿設されるとともに、ボ
ルト３を締め付けたときボルト３の頭部と係合す
る第１の被締結体を示している。そして、この第
１の被締結体１におけるボルト３の頭部との係合
（ボルト壁面部分）に、この第１の被締結体１よ
りも降伏応力の高い材料から成る受け部材７が、
鋳込みにより、埋設されている。 In FIG. 1, reference numeral 1 designates a first fastened body having a through hole 1A through which the threaded portion of the bolt 3 passes, and which engages with the head of the bolt 3 when the bolt 3 is tightened. There is. Then, in the engagement with the head of the bolt 3 in the first fastened body 1 (the bolt wall surface portion), the receiving member 7 made of a material having a higher yield stress than the first fastened body 1 is inserted.
It is buried by casting.
符号２はボルト３のねじ部が螺合する雌ねじ部
６Ａをそなえるとともに、ボルト３により第１の
被締結体１に結合される第２の被締結体を示して
いて、第１の被締結体１、第２の被締結体２およ
びボルト３でボルト締結体構造が形成されてい
る。 Reference numeral 2 designates a second fastened body that has a female threaded portion 6A into which the threaded portion of the bolt 3 is screwed, and is connected to the first fastened body 1 by the bolt 3, and is connected to the first fastened body 1 by the bolt 3. 1. A bolt fastening body structure is formed by the second fastened body 2 and the bolt 3.
そして、受け部材７が、第２図に示すように、
ボルト３の頭部と係合する第１の当接面と、この
第１の当接面に平行で第１の被締結体１と当接す
る第２の当接面とをそなえた截頭円錐形状に形成
され、しかも第２の当接面の外径がボルト頭部外
径よりも大きくかつ第２当接面と第１の被締結体
１との接触面積が第１の当接面とボルト頭部との
接触面積より大となるように形成され、さらに上
記の第１および第２の各当接面に開孔しかつこれ
ら両当接面に垂直なボルト貫通孔が形成されてい
る。 Then, as shown in FIG. 2, the receiving member 7
A truncated cone having a first contact surface that engages with the head of the bolt 3, and a second contact surface that is parallel to the first contact surface and comes into contact with the first object to be fastened 1. shape, the outer diameter of the second contact surface is larger than the outer diameter of the bolt head, and the contact area between the second contact surface and the first object 1 to be fastened is the same as that of the first contact surface. The bolt is formed to have a larger contact area than the bolt head, and is further provided with a bolt through hole that is open in each of the first and second contact surfaces and is perpendicular to both of the contact surfaces. .
ここで、受け部材７Ａは、被締結体１が例えば
アルミニウムでできている場合、鋳鉄やMMC
（Metal Matrixed Composite）あるいはFRM
（Fiber Reinforced Metal）を材料としてつくら
れる。 Here, when the object 1 to be fastened is made of aluminum, for example, the receiving member 7A is made of cast iron or MMC.
(Metal Matrixed Composite) or FRM
(Fiber Reinforced Metal) is used as the material.
そして、この場合、受け部材７Ａと被締結体１
との間の受圧面積は降伏しない程度に大きくとら
れている。 In this case, the receiving member 7A and the object to be fastened 1
The pressure-receiving area between the two is set large enough to prevent breakdown.
なお、第１図中、１Ａはボルト穴、１Ｂは凹
所、２Ａはボルト穴、５は座金、６Ａはボルト３
と螺合する雌ねじ部である。 In Figure 1, 1A is a bolt hole, 1B is a recess, 2A is a bolt hole, 5 is a washer, and 6A is a bolt 3.
This is a female thread that is screwed together.
上述の構成により、これらの被締結体１，２を
相互に締結するには、ボルト３をボルト穴１Ａ，
２Ａに通しボルト３と雌ねじ部６Ａとを螺合させ
ることにより締め付けてゆけばよい。そしてこの
締付時にボルト軸力が座金５を介して受け部材７
Ａに作用するが、この受け部材７Ａは降伏応力の
高い材料でつくられており、しかも、受け部材７
Ａの第２の当接面が第１の被締結体１と当接する
構造となつており、ボルトの軸力は全て第１の被
締結体１に伝達される。 With the above-described configuration, in order to fasten these fastened bodies 1 and 2 to each other, the bolt 3 is inserted into the bolt hole 1A,
The bolt 3 may be tightened by threading the through bolt 3 through the thread 2A into the female threaded portion 6A. During this tightening, the bolt axial force is applied to the receiving member 7 via the washer 5.
A, but this receiving member 7A is made of a material with high yield stress, and moreover, the receiving member 7A is made of a material with high yield stress.
The structure is such that the second contact surface of A contacts the first object 1 to be fastened, and all the axial force of the bolt is transmitted to the first object 1 to be fastened.
したがつて、受け部材７Ａと第１の被締結体１
との接合に緩みが生じたとしても、ボルトの軸力
が常に第１の被締結体１に作用しているため、第
１の被締結体１がボルト３を中心として回動する
ことはない。 Therefore, the receiving member 7A and the first fastened body 1
Even if the joint becomes loose, the axial force of the bolt is always acting on the first fastened body 1, so the first fastened body 1 will not rotate around the bolt 3. .
また、第２の当接面の外径がボルト頭部外径よ
りも大であり、且つ第２の当接面と第１の被締結
体１との接触面積が第１の当接面とボルト頭部と
の接触面積よりも大となるよう構成されている。 Further, the outer diameter of the second abutting surface is larger than the outer diameter of the bolt head, and the contact area between the second abutting surface and the first object 1 to be fastened is the same as that of the first abutting surface. The contact area is larger than the contact area with the bolt head.
したがつて、大きな座金を入れなくてもボルト
軸力の伝達面積が大幅に増大し、ボルト座面部分
が降伏することがなく、ボルトの緩みが防止さ
れ、ボルト締結による信頼性が大幅に向上する。 Therefore, the transmission area of bolt axial force is greatly increased without inserting a large washer, the bolt seating surface does not yield, the bolt is prevented from loosening, and the reliability of bolt fastening is greatly improved. do.
次に第３，４図に示す第２実施例につき説明す
る。この第２実施例では、受け部材７Ｂの側壁部
をひだ状にして受圧面積を大きくとつたものであ
る。そしてこの受け部材７Ｂの材質も、被締結体
１がアルミニウムの場合、受け部材７Ａと同じ
で、受け部材７Ｂの埋設（鋳込み）場所も受け部
材７Ａと同じくボルト座面部分である。 Next, a second embodiment shown in FIGS. 3 and 4 will be described. In this second embodiment, the side wall portion of the receiving member 7B is pleated to increase the pressure receiving area. When the object 1 to be fastened is aluminum, the material of the receiving member 7B is the same as that of the receiving member 7A, and the place where the receiving member 7B is buried (cast) is also the bolt seating surface portion, like the receiving member 7A.
このような構成により、この第２実施例の場合
も、前述の第１実施例とほぼ同様の効果ないし利
点が得られる。 With such a configuration, the second embodiment also provides substantially the same effects and advantages as those of the first embodiment.
さらに、第５，６図に示す第３実施例では、受
け部材を符号７Ｃで示すごとくリング状に形成し
たもので、他の受け部材７Ａ，７Ｂよりも大径に
して大きな受圧面積をとつている。そして、この
受け部材７Ｃの材質も、被締結体１がアルミニウ
ムの場合、受け部材７Ａ，７Ｂと同じで、受け部
材７Ｃの埋設（鋳込み）場所も受け部材７Ａ，７
Ｂと同じくボルト座面部分である。 Furthermore, in the third embodiment shown in FIGS. 5 and 6, the receiving member is formed into a ring shape as shown by the reference numeral 7C, and has a larger diameter than the other receiving members 7A and 7B to ensure a large pressure receiving area. There is. When the object 1 to be fastened is aluminum, the material of the receiving member 7C is the same as that of the receiving members 7A, 7B, and the location where the receiving member 7C is buried (casting) is also the same as that of the receiving members 7A, 7B.
Like B, this is the bolt seating surface.
このような構成により、この第３実施例の場合
も、前述の第１，２実施例とほぼ同様の効果ない
し利点が得られる。 With such a configuration, the third embodiment also provides substantially the same effects and advantages as those of the first and second embodiments described above.
なお、受け部材の形状として、第２，４，６図
に示すもの以外の形状ももちろん可能である。 Note that, as the shape of the receiving member, shapes other than those shown in FIGS. 2, 4, and 6 are of course possible.
ところで、本考案による構造は、例えばアルミ
ニウム製のシリンダヘツド、シリンダブロツクを
ボルトを用いて締結する場合に適用できるが、そ
の他エンジンフランジ部どうしをボルトを用いて
締結する場合にも適用することができる。 By the way, the structure according to the present invention can be applied, for example, when bolts are used to fasten aluminum cylinder heads and cylinder blocks, but it can also be applied when other engine flanges are fastened together using bolts. .
また、３枚（３個）以上の被締結体にボルトを
通してこれらの被締結体相互を締結するものに
も、本考案を適用することができる。 Further, the present invention can be applied to a device in which three or more objects to be fastened are fastened together by passing bolts through them.
以上詳述したように、本考案のボルト締結体構
造によれば、簡素な構成で次のような効果ないし
利点が得られる。
As detailed above, according to the bolt fastening structure of the present invention, the following effects and advantages can be obtained with a simple configuration.
(1) 受け部材の第２の当接面が第１の被締結体と
当接する構造となつており、ボルトの軸力は全
て第１の被締結体に伝達される。(1) The second contact surface of the receiving member is configured to come into contact with the first object to be fastened, and all the axial force of the bolt is transmitted to the first object to be fastened.
したがつて、受け部材と第１の被締結体との
接合に緩みが生じたとしても、ボルトの軸力が
常に第１の被締結体に作用しているため、第１
の被締結体がボルトを中心として回動すること
はない。 Therefore, even if the connection between the receiving member and the first fastened body becomes loose, the axial force of the bolt is always acting on the first fastened body, so the first fastened body
The fastened body does not rotate around the bolt.
(2) 第２の当接面の外径がボルト頭部外径よりも
大であり且つ第２の当接面と第１の被締結体と
の接触面積が第１の当接面とボルト頭部との接
触面積よりも大となるよう構成されている。(2) The outer diameter of the second abutting surface is larger than the outer diameter of the bolt head, and the contact area between the second abutting surface and the first fastened object is larger than that of the first abutting surface and the bolt. It is configured to be larger than the contact area with the head.
したがつて、大きな座金を入れなくてもボル
ト軸力の伝達面積が大幅に増大し、ボルト座面
部分が降伏することがなく、ボルトの緩みが防
止され、ボルト締結による信頼性が大幅に向上
する。 Therefore, the transmission area of bolt axial force is greatly increased without inserting a large washer, the bolt seating surface does not yield, the bolt is prevented from loosening, and the reliability of bolt fastening is greatly improved. do.
第１，２図は本考案の第１実施例としてのボル
ト締結体構造を示すもので、第１図はその断面
図、第２図はその受け部材の斜視図であり、第
３，４図は本考案の第２実施例としてのボルト締
結体構造を示すもので、第３図はその断面図、第
４図はその受け部材の斜視図であり、第５，６図
は本考案の第３実施例としてのボルト締結体構造
を示すもので、第５図はその断面図、第６図はそ
の受け部材の斜視図であり、第７図は従来のボル
ト締結体構造を示す断面図である。
１，２……被締結体、１Ａ，２Ａ……ボルト
穴、１Ｂ……凹所、３……ボルト、５……座金、
６Ａ……雌ねじ部、７Ａ，７Ｂ，７Ｃ……受け部
材。
Figures 1 and 2 show the structure of a bolt fastening body as a first embodiment of the present invention, with Figure 1 being a sectional view thereof, Figure 2 being a perspective view of its receiving member, and Figures 3 and 4 being a perspective view of its receiving member. 3 shows a bolt fastening body structure as a second embodiment of the present invention, FIG. 3 is a sectional view thereof, FIG. 4 is a perspective view of its receiving member, and FIGS. Fig. 5 is a cross-sectional view thereof, Fig. 6 is a perspective view of a receiving member thereof, and Fig. 7 is a cross-sectional view showing a conventional bolt fastening structure. be. 1, 2... object to be fastened, 1A, 2A... bolt hole, 1B... recess, 3... bolt, 5... washer,
6A...Female screw portion, 7A, 7B, 7C...Receiving member.
Claims (1)
とともにボルト頭部と係合する第１の被締結体
と、上記ボルトのねじ部が貫通もしくは螺合する
第２の被締結体と、上記第１の被締結体における
上記ボルト頭部との係合部に埋設されるとともに
上記第１の被締結体よりも降伏応力の高い材料か
ら成る受け部材とをそなえ、少なくとも上記第１
および第２の被締結体を含む複数の被締結体を相
互に締結するボルト締結構造において、上記受け
部材が上記ボルト頭部と係合する第１の当接面
と、同第１の当接面に平行で上記第１の被締結体
に当接する第２の当接面と、両端がそれぞれ上記
第１および第２の当接面に開孔し且つ両当接面に
垂直なボルト貫通孔とをそなえ、上記第２の当接
面の外径が上記ボルト頭部外径よりも大であり且
つ上記第２の当接面と上記第１の被締結体との接
触面積が上記第１の当接面と上記ボルト頭部との
接触面積よりも大であることを特徴とする、ボル
ト締結体構造。 a first to-be-fastened body having a through-hole through which the threaded portion of the bolt passes and engages with the bolt head; a second to-be-fastened body through which the threaded portion of the bolt passes or is screwed; a receiving member that is embedded in a portion of the first to-be-fastened body that engages with the bolt head and is made of a material having a higher yield stress than the first to-be-fastened body;
and a bolt fastening structure for mutually fastening a plurality of objects to be fastened, including a second object to be fastened, wherein the receiving member has a first contact surface that engages with the bolt head; a second contact surface parallel to the surface and in contact with the first object to be fastened; and a bolt through hole having both ends opening in the first and second contact surfaces and perpendicular to both contact surfaces. The outer diameter of the second abutment surface is larger than the outer diameter of the bolt head, and the contact area between the second abutment surface and the first object to be fastened is larger than the first object. A bolt fastening structure characterized in that the contact area between the contact surface of the bolt and the bolt head is larger than the contact area of the bolt head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986176519U JPH0534327Y2 (en) | 1986-11-17 | 1986-11-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986176519U JPH0534327Y2 (en) | 1986-11-17 | 1986-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6380311U JPS6380311U (en) | 1988-05-27 |
| JPH0534327Y2 true JPH0534327Y2 (en) | 1993-08-31 |
Family
ID=31116841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986176519U Expired - Lifetime JPH0534327Y2 (en) | 1986-11-17 | 1986-11-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0534327Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010270853A (en) * | 2009-05-22 | 2010-12-02 | Toyota Motor Corp | Fender mounting structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58117914U (en) * | 1982-02-05 | 1983-08-11 | 三菱自動車工業株式会社 | Mounting structure for resin molded products |
-
1986
- 1986-11-17 JP JP1986176519U patent/JPH0534327Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6380311U (en) | 1988-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62147904A (en) | Structure of joint of line strip | |
| JPH0534327Y2 (en) | ||
| JPH07238635A (en) | Web opening part reinforcing method of steel structural beam | |
| JP3393228B2 (en) | Connecting rod bolt | |
| JP3052547U (en) | Nut loosening stopper | |
| JP2575954Y2 (en) | Oil filter mounting structure | |
| JPH04122808U (en) | Hollow screw bolt coupling device | |
| JPH06158783A (en) | Screw coupling for steel bar | |
| JPH0451211Y2 (en) | ||
| JPH0530064Y2 (en) | ||
| JPH07109160B2 (en) | Joint structure of large diameter concrete segment | |
| JPH0346079Y2 (en) | ||
| JPS5940566Y2 (en) | Locking structure of the rod end of linear actuator | |
| JPH0521545Y2 (en) | ||
| JP2500546Y2 (en) | Concrete segment joint structure | |
| JPS6152416U (en) | ||
| JPH0577610U (en) | Lock nut | |
| JPH0139988Y2 (en) | ||
| JPH0511421Y2 (en) | ||
| JPS59196639U (en) | Steel column and beam joining equipment | |
| JPH0139989Y2 (en) | ||
| JPH1078182A (en) | Connecting structure between hard pipe and soft pipe | |
| JPS6154579U (en) | ||
| JPH0343850B2 (en) | ||
| JPS608453A (en) | Cylinder block |