JPS6257471B2 - - Google Patents
Info
- Publication number
- JPS6257471B2 JPS6257471B2 JP54079580A JP7958079A JPS6257471B2 JP S6257471 B2 JPS6257471 B2 JP S6257471B2 JP 54079580 A JP54079580 A JP 54079580A JP 7958079 A JP7958079 A JP 7958079A JP S6257471 B2 JPS6257471 B2 JP S6257471B2
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- socket
- nut
- regular hexagon
- straight
- 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
Description
【発明の詳細な説明】
本発明はボルト締付機の改良に係り、特にソケ
ツトの内面形状を改良してボルト・ナツトへの着
脱を容易にしたボルト締付機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in bolt tightening machines, and particularly to a bolt tightening machine in which the inner surface shape of a socket is improved to facilitate attachment and detachment to bolts and nuts.
一般に、ボルト・ナツト類の締付に際しては、
トルクレンチ等の手締め工具やナツトランナと称
する電動締付機が広く使用されている。 Generally, when tightening bolts and nuts,
Manual tightening tools such as torque wrenches and electric tightening machines called nutrunners are widely used.
電動締付機は、第１図に例示するように小型電
動機および速度変換装置を内蔵した本体１の先端
に突出する駆動軸２にソケツト３を挿着し、この
ソケツト３を締付けるボルト・ナツトの頭部に嵌
合させるようにしたものである。なお、同図中、
４は把手、５は電源コード、６は駆動スイツチで
あり、また、その使用に際しては先端部近傍に反
力受け（図示せず）が取付けられている。 As shown in Fig. 1, the electric tightening machine is constructed by inserting a socket 3 into a drive shaft 2 protruding from the tip of a main body 1 which has a built-in small electric motor and a speed converter, and tightening bolts and nuts into the socket 3. It is designed to fit on the head. In addition, in the same figure,
Reference numeral 4 designates a handle, 5 a power cord, and 6 a drive switch. When in use, a reaction force receiver (not shown) is attached near the tip.
このような電動締付機において、ソケツト３の
内面形状は、中央部から後端部にかけて駆動軸２
に対応した四角状であり、また、先端部の内面形
状３ａは締付けるボルト・ナツトの頭部に近似し
た六角状である。この場合、ソケツト３はその先
端部の内面形状３ａが第２図に示すようにボル
ト・ナツト７の頭部に対して多少のクリアランス
のある大きさのものが選定使用されるが、このク
リアランスが大きいと、両者の係合面ａの面積が
小さくなつてボルト・ナツト７の頭部の頂部部分
を傷めやすくなり、反対にクリアランスが小さい
と、ソケツトのボルト・ナツトへの嵌合がスムー
ズに行ないにくいという難点がある。これは複数
個のソケツトで複数個のボルト・ナツトを同時締
付けする多軸締付機の場合、はなはだ不都合であ
る。特に、締付が完了した時、電動締付機のソケ
ツトがボルト・ナツトにくいこみ、ボルト締付機
をボルト・ナツトより抜きとるのが困難となる欠
点があつた。 In such an electric tightening machine, the inner surface shape of the socket 3 is such that the drive shaft 2 extends from the center to the rear end.
The inner surface 3a of the tip has a hexagonal shape similar to the head of a bolt or nut to be tightened. In this case, the socket 3 is selected and used so that the inner shape 3a of its tip has a certain clearance with respect to the head of the bolt/nut 7, as shown in FIG. If the clearance is too large, the area of the engaging surfaces a between the two will be small and the top of the head of the bolt/nut 7 will be easily damaged.On the other hand, if the clearance is small, the socket will not fit smoothly into the bolt/nut. The problem is that it is difficult. This is extremely inconvenient in the case of a multi-spindle tightening machine that simultaneously tightens a plurality of bolts and nuts using a plurality of sockets. In particular, when tightening is completed, the socket of the electric tightening machine becomes wedged in the bolt or nut, making it difficult to remove the bolt tightening machine from the bolt or nut.
更に従来のソケツトでは、ソケツトの内面形状
における凹部、すなわち正六角形の頂部とボル
ト・ナツトの正六角形の頂部とがほぼ一致したと
きに両者が嵌合するため、多数のボルト・ナツト
の着脱を行なう場合に作業性が悪いという難点が
あつた。 Furthermore, in conventional sockets, when the recess in the inner surface of the socket, that is, the top of the regular hexagon, and the top of the regular hexagon of the bolt/nut fit together when they almost match, it is necessary to attach and detach a large number of bolts/nuts. The problem was that workability was poor in some cases.
なお、ソケツトのボルト・ナツトへの嵌合を容
易にするため、ソケツトの内面形状を正六角形を
２個組合せた星形の二重六角形としたナツトも知
られているが（例えば特公昭45−33640号公報、
特開昭51−8445号公報等）、このようなナツトで
は、内面形状が正六角形のナツトと比較して、ソ
ケツトの嵌合位置が２倍に増えただけで、ソケツ
トの内面形状の六角形の頂部とボルト・ナツトの
六角形の頂部とを一致させて両者の嵌合を行なう
点では前述の正六角形１個の内面形状のものと本
質的な差異はなく、嵌合作業はなお煩雑なもので
あつた。 In order to make it easier to fit the socket into a bolt or nut, some nuts are known in which the inner surface of the socket is a star-shaped double hexagon, which is a combination of two regular hexagons (for example, −33640 publication,
(Japanese Patent Application Laid-Open No. 51-8445, etc.), compared to a nut with a regular hexagonal inner surface, such a nut only has twice the number of socket fitting positions; There is no essential difference from the inner surface shape of one regular hexagon described above in that the top of the bolt and nut are fitted with the top of the hexagon of the bolt/nut, and the fitting work is still complicated. It was hot.
本発明者は従来のソケツトの内面形状につき
種々の検討を加える間に、クリアランスの少ない
ソケツトとボルト・ナツトの関係においても、実
際に荷重負担をする面積は第２図ａに示すように
僅かであり、ｂ部分は何等の寄与もしていないこ
とを知見した。本発明は、このｂ部分を積極的に
活用すると共に他の部分を基本正六角形の外接円
の円弧、又はこの円弧より後退した面とすること
により、ソケツトのボルト・ナツトへの着脱を容
易に行なえるようにしたボルト締付機を提供する
ことを目的とするものである。 While conducting various studies on the internal shape of conventional sockets, the present inventor discovered that even in the relationship between a socket with little clearance and a bolt/nut, the area that actually bears the load is small, as shown in Figure 2a. It was found that the b part did not make any contribution. The present invention makes it easy to attach and detach the socket to a bolt or nut by making active use of this part b and making the other parts an arc of the circumcircle of the basic regular hexagon or a surface set back from this arc. The object of the present invention is to provide a bolt tightening machine that can perform the bolt tightening process.
第３図は、本発明のボルト締付機におけるソケ
ツトの一例を示す一部縦断側面図であり、第４図
は第３図の―線に沿う横断面図を示す。これ
らの図において、ソケツト８の内面形状は中央部
近傍から後端（第３図右端）にかけては、電動締
付機の駆動軸（第１図の２に相当）に適合するよ
うコーナ部分をまるめた四角形状８ａであるが、
その先端部分に形成されたボルト・ナツト挿入部
８ｂは、第４図に示されているように、六角形状
を基本とし、その一部を切除したような形状をし
ている。即ち、正六角形を成す六面の夫々を、各
頂点から第１直線部a1の部分を残し、残余部分ｂ
を切除した形状である。この残余部分ｂは、第２
直線部a2と円弧部ｃとで構成されている。これら
の第１、第２直線部a1とa2は等長で、第１直線部
a1に対し第２直線部a2は150゜の角度をなして連
なつている。また、円弧部ｃは基本正六角形の外
接円の円弧である。以下、便宜上、第１、第２直
線部a1，a2および円弧部ｃを含む垂直面を、それ
ぞれ第１直線面a1、第２直線面a2および円弧面ｃ
と呼ぶことにする。 FIG. 3 is a partially longitudinal side view showing an example of a socket in the bolt tightening machine of the present invention, and FIG. 4 is a cross-sectional view taken along the line -- in FIG. In these figures, the inner shape of the socket 8 has rounded corners from near the center to the rear end (right end in Figure 3) to fit the drive shaft of the electric tightener (corresponding to 2 in Figure 1). Although the square shape 8a is
As shown in FIG. 4, the bolt/nut insertion portion 8b formed at the tip thereof is basically hexagonal in shape, with a portion of the hexagonal shape being cut away. That is, for each of the six faces forming a regular hexagon, from each vertex, leave the first straight part a 1 part, and leave the remaining part b
It has a shape with the . This remaining portion b is the second
It is composed of a straight section a2 and a circular arc section c. These first and second straight parts a 1 and a 2 are of equal length, and the first straight part
The second straight portion a2 is continuous at an angle of 150° with respect to a1 . Further, the arc portion c is an arc of a circumcircle of a basic regular hexagon. Hereinafter, for convenience, the vertical plane including the first and second straight parts a 1 , a 2 and the circular arc part c will be referred to as the first straight plane a 1 , the second straight plane a 2 and the circular arc plane c, respectively.
I will call it.
このように構成したソケツトは第１図における
と同様、ボルト締付機本体１の先端に突出する駆
動軸２に嵌挿され、ビス孔８ｃに嵌合したビス
（図示せず）によつて駆動軸に固着されて使用さ
れる。この場合、ソケツト８を左回転させるとき
は、第１直線面a1がボルト・ナツト頭部に対する
加圧面となり、また、右回転させるときは、第２
直線面a2が加圧面となつてボルト・ナツトの締付
けを行なう。そして、円弧面ｃは、ボルト・ナツ
トの頂点が、その範囲θ内にあるときは、これを
自由に受入れるからソケツトのボルト・ナツトへ
の着脱は、自由度が大きなものとなる。 As in FIG. 1, the socket configured in this way is fitted onto the drive shaft 2 protruding from the tip of the bolt tightening machine body 1, and is driven by a screw (not shown) fitted into the screw hole 8c. Used by being fixed to the shaft. In this case, when rotating the socket 8 to the left, the first linear surface a1 becomes the pressurizing surface for the bolt/nut head, and when rotating the socket 8 to the right, the second linear surface a1 becomes the pressure surface for the bolt/nut head.
The straight surface a2 becomes the pressure surface and tightens bolts and nuts. Since the arcuate surface c freely accepts the apex of the bolt/nut when it is within the range θ, there is a large degree of freedom in attaching and detaching the socket to the bolt/nut.
以上の如く、本発明のボルト締付機において
は、そのソケツトが第１直線面と第２直線面によ
つて形成される突出部分と次の突出部分との間に
は、基本正六角形の外接円の円弧状切除面が形成
されており、この部分は、ボルト・ナツトへの挿
着に際し、それらの頭部頂点を自由に受け入れる
から、特に多軸締付機の場合には、ボルト・ナツ
トへの着脱は容易であり、簡単に位置合わせをす
ることができる等の効果が大である。 As described above, in the bolt tightening machine of the present invention, the socket has a basic regular hexagonal circumference between the protruding part formed by the first linear surface and the second linear surface and the next protruding part. A circular arc-shaped cutting surface is formed, and this part freely accepts the head apex of bolts and nuts when they are inserted into the bolts and nuts. It is easy to attach and detach, and has great effects such as easy positioning.
また、本発明のボルト締付機では、第１直線面
と第２直線面とを同一の長さとし、150゜の角度
を成して連ねたのでソケツトを左回転するときに
も、また右回転するときにもボルト・ナツトの締
付および緩め作業を確実に行なうことができる。
特に錆びついて締付けられているボルト・ナツト
等を緩める場合には、円弧面の長さにわたりソケ
ツトにインパクトを与えることができるので有効
である。 In addition, in the bolt tightening machine of the present invention, the first linear surface and the second linear surface are the same length and are connected at an angle of 150 degrees, so that when the socket is rotated to the left, it can also be rotated to the right. This allows the tightening and loosening work of bolts and nuts to be performed reliably even when the work is done.
This is particularly effective when loosening bolts and nuts that are rusted and tightened, as the impact can be applied to the socket over the length of the arcuate surface.
第１図は電動式のボルト締付機の一例を示す一
部縦断側面図、第２図はソケツト内面とボルト・
ナツト頭部との関係を示す平面図、第３図は本発
明のボルト締付機で使用されるソケツトの一部縦
断側面図、第４図は第３図の―線に沿う横断
面図である。
１……電動締付機本体、２……駆動軸、３，８
……ソケツト、７……ボルト・ナツト、a1……第
１直線面、a2……第２直線面、ｃ……円弧面（後
退面）。
Fig. 1 is a partially longitudinal side view showing an example of an electric bolt tightening machine, and Fig. 2 shows the inner surface of the socket and the bolt.
FIG. 3 is a partially vertical side view of the socket used in the bolt tightening machine of the present invention, and FIG. 4 is a cross-sectional view taken along the line - in FIG. 3. be. 1...Electric tightening machine body, 2...Drive shaft, 3, 8
...Socket, 7...Bolt/Nut, a1 ...First linear surface, a2 ...Second linear surface, c...Circular surface (retreating surface).
Claims (1)
断面の内面形状が、基本正六角形の各頂点から右
回りまたは左回りにその各辺上にとられた第１直
線部と、一端はこの第１直線部に連なり、他端は
前記第１直線部と150゜の角度をなして前記基本
正六角形の外接円上にあり、かつ第１直線部と同
一長さを有する第２直線部とで形成される６個の
突出部分と；これらの突出部分間をそれぞれ連ね
る６個の前記基本正六角形の外接円の円弧部とか
ら成ることを特徴とするボルト締付機。1 The inner shape of the axis-perpendicular cross section of the bolt/nut insertion part of the socket is a first straight line section taken clockwise or counterclockwise from each vertex of a basic regular hexagon on each side thereof, and one end A second straight part connected to the straight part, the other end of which forms an angle of 150° with the first straight part, lies on the circumcircle of the basic regular hexagon, and has the same length as the first straight part. A bolt tightening machine characterized by comprising: six protruding parts; and six circular arc parts of the circumcircle of the basic regular hexagon, each of which connects each of these protruding parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7958079A JPS563183A (en) | 1979-06-24 | 1979-06-24 | Bolt clamping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7958079A JPS563183A (en) | 1979-06-24 | 1979-06-24 | Bolt clamping machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS563183A JPS563183A (en) | 1981-01-13 |
| JPS6257471B2 true JPS6257471B2 (en) | 1987-12-01 |
Family
ID=13693915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7958079A Granted JPS563183A (en) | 1979-06-24 | 1979-06-24 | Bolt clamping machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS563183A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4811889B2 (en) * | 1999-12-03 | 2011-11-09 | 岡部株式会社 | Anti-rust cap spanner |
| JP6089826B2 (en) * | 2013-03-15 | 2017-03-08 | アイシン・エィ・ダブリュ株式会社 | Tool socket |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5526327B2 (en) * | 1974-07-09 | 1980-07-12 |
-
1979
- 1979-06-24 JP JP7958079A patent/JPS563183A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS563183A (en) | 1981-01-13 |
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