JPH08135864A - Clamping device - Google Patents

Clamping device

Info

Publication number
JPH08135864A
JPH08135864A JP6272788A JP27278894A JPH08135864A JP H08135864 A JPH08135864 A JP H08135864A JP 6272788 A JP6272788 A JP 6272788A JP 27278894 A JP27278894 A JP 27278894A JP H08135864 A JPH08135864 A JP H08135864A
Authority
JP
Japan
Prior art keywords
tightening
spiral
line
screwing means
pair
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Withdrawn
Application number
JP6272788A
Other languages
Japanese (ja)
Inventor
Toru Kurimoto
亨 栗本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sango Co Ltd
Original Assignee
Sango Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sango Co Ltd filed Critical Sango Co Ltd
Priority to JP6272788A priority Critical patent/JPH08135864A/en
Publication of JPH08135864A publication Critical patent/JPH08135864A/en
Withdrawn legal-status Critical Current

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Abstract

PURPOSE: To apply the uniform tightening force on the whole periphery of a jointed pipe, by installing a pair of tightening fitting bodies engaged at both the end parts of the tightening line wound in a spiral shape and a screwing means for tightening both the tightening fitting bodies, as for a clamping device suitable for clamping the joint part between the exhaust pipes of an automobile. CONSTITUTION: When the exhaust pipes 5 and 6 for automobile are connected, the downstream side exhaust pipe 6 is fitted with the exhaust pipe 5 on the upstream side, and the spiral-shaped tightening life 1 of a clamping device 4 is fitted on the outer periphery. The tightening line 1 is formed by winding a spring steel in a spiral form in the nearly 1.7 turns, and both the ends of the tightening line 1 are inserted into a hole 2d opened on the slide curved surfaces 2a of a pair of tightening fitting bodies 2, and the top end is caulked, and engaged with the slidable curved surface 2a by forming a head part 1a. Then, both the seat surfaces 2b and 2b are shifted, sliding along the outer peripheral surface (outer peripheral line) of the spiral-shaped tightening line 1 by tightening the nut 3B of a screwing means 3, and both the exhaust pipes 5 and 6 are tighetened by the tightening line 1 in a contracted diameter state.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は自動車の排気系等の排気
管同志の結合部をクランプするに好適なクランプ装置に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device suitable for clamping a joint between exhaust pipes of an exhaust system of an automobile.

【0002】[0002]

【従来の技術】水道蛇口、ガス管端等への元栓へ挿入連
結するゴム管挿込部を締付け保持する締付け具(クラン
プ装置)として、実公昭50−23867号公報のもの
が周知である。
2. Description of the Related Art As a tightening tool (clamping device) for tightening and holding a rubber pipe inserting portion which is inserted and connected to a main tap such as a water faucet or a gas pipe end, the one disclosed in Japanese Utility Model Publication No. 50-23867 is well known.

【0003】このクランプ装置は螺旋状締付け線31、
31の各両端32、32を締付具本体33に固定し、本
体33に貫通螺合させた軸34で螺旋状締付け線31、
31の中央上部を押さえ盤35で半径方向に押しつつ両
端32、32を引いて、螺旋状締付け線31、31の径
を縮小してゴム管挿込部を締め付ける構造である。
This clamp device has a spiral tightening wire 31,
Each end 32, 32 of 31 is fixed to the fastener main body 33, and the spiral tightening line 31, with the shaft 34 screwed through the main body 33.
The upper part of the center of 31 is pressed by the pressing board 35 in the radial direction and both ends 32, 32 are pulled to reduce the diameter of the spiral tightening wires 31, 31 to tighten the rubber tube insertion part.

【0004】[0004]

【発明が解決しようとする課題】前記従来の技術では螺
旋状締付け線31、31の両端32、32を引きつつ、
その中央上部を押え盤35で半径方向に中心に向って押
すため、締付け線31、31が真円を保ったままで縮径
されなくて、図示上下方向が短径の楕円形に変形してし
まう。その結果、管の円周上で均一な締付け力が得られ
ず、自動車の排気系に用いた場合にはガス洩れを招く虞
れがある。
According to the above-mentioned conventional technique, while pulling both ends 32, 32 of the spiral tightening wires 31, 31,
The upper part of the center is pressed by the presser plate 35 toward the center in the radial direction, so that the tightening lines 31 and 31 are not reduced in diameter while keeping a perfect circle, and the vertical direction in the drawing is deformed into an elliptical shape with a short diameter. . As a result, a uniform tightening force cannot be obtained on the circumference of the pipe, which may cause gas leakage when used in an exhaust system of an automobile.

【0005】また締付け用の軸34が管の半径方向(図
示上下方向)に放射状に延びているため、クランプ装置
としての外形形状が大きくなり、車両の排気管に用いた
場合には、周辺部品と干渉して、車両への搭載性が劣る
という問題点があった。
Further, since the tightening shaft 34 extends radially in the radial direction of the pipe (the vertical direction in the drawing), the external shape of the clamp device becomes large, and when used as an exhaust pipe of a vehicle, peripheral parts are used. However, there was a problem that it was inferior in mountability on the vehicle.

【0006】そこで、本発明はこのようなガス洩れの虞
れや、問題点が解消できるクランプ装置を提供すること
を目的とする。
[0006] Therefore, an object of the present invention is to provide a clamp device capable of solving such a risk of gas leakage and problems.

【0007】[0007]

【課題を解決するための手段】前記目的を達成するため
に、請求項1のクランプ装置は、螺旋状に巻いた締付け
線(1)と、該締付け線(1)の両端部にそれぞれ係止
され、締付け線(1)の外周面に摺接すべき滑動曲面
(2a)と螺合手段用の座面(2b)とを備えた一対の
締付具本体(2)と、該一対の締付具本体(2)の座面
(2b)に係合して両座面を近づけることで一対の締付
具本体(2)を締結する螺合手段(3)とを具備したこ
とを特徴とするものである。
In order to achieve the above object, a clamp device according to a first aspect of the present invention is such that a tightening wire (1) wound in a spiral shape and locked to both ends of the tightening wire (1), respectively. And a pair of fastening tool bodies (2) having a sliding curved surface (2a) to be slidably in contact with the outer peripheral surface of the fastening line (1) and a seating surface (2b) for screwing means, and the pair of fastening tools. And a screwing means (3) for fastening the pair of fastener main bodies (2) by engaging the seating surface (2b) of the attachment main body (2) and bringing both seating surfaces close to each other. To do.

【0008】請求項2の発明は、請求項1記載のクラン
プ装置において、締付具本体(2)の螺合手段用座面
(2b)を凸曲面に形成したことを特徴とするものであ
る。そして、請求項3の発明は、請求項1又は2記載の
クランプ装置において、締付け線(1)をばね鋼で形成
したことを特徴とするものである。
A second aspect of the present invention is characterized in that, in the clamp device according to the first aspect, the seating surface (2b) for the screwing means of the fastener body (2) is formed into a convex curved surface. . The invention of claim 3 is the clamp device according to claim 1 or 2, characterized in that the tightening wire (1) is formed of spring steel.

【0009】[0009]

【作用】請求項1記載のクランプ装置では、螺合手段
(3)を締付けると、一対の締付具本体(2)はその滑
動曲面(2a)が螺旋状締付け線(1)の外周面に沿っ
て滑動しながら互に接近する。こうして螺旋状締付け線
(1)の両端が管の周方向へ引っ張られ、管の全周に均
一な締付け力が作用する。従ってガス洩れは発生し難く
なる。
In the clamping device according to the first aspect, when the screwing means (3) is tightened, the sliding curved surfaces (2a) of the pair of tightening tool bodies (2) are attached to the outer peripheral surface of the spiral tightening line (1). Sliding along, they approach each other. In this way, both ends of the spiral tightening wire (1) are pulled in the circumferential direction of the tube, and a uniform tightening force acts on the entire circumference of the tube. Therefore, gas leakage is less likely to occur.

【0010】また放射状に突出する締付け軸がなく、ク
ランプ装置の外形形状が小形化できるので、車両等への
搭載性が向上する。締付具本体(2)の螺合手段用座面
(2b)を凸曲面とすると、締付けストロークが大きく
て締付具本体どうしが極度に接近する場合でも、螺合手
段であるボルト・ナットの中心に座面(2b)が当接す
るので、かつぎを防止できる。
Further, since there is no tightening shaft protruding radially, the outer shape of the clamp device can be made small, so that the mountability on a vehicle or the like is improved. If the seating surface (2b) for the screwing means of the tightening tool body (2) is a convex curved surface, even if the tightening tool bodies are extremely close to each other due to a large tightening stroke, the bolts and nuts that are the screwing means are Since the seating surface (2b) is in contact with the center, it is possible to prevent a fold.

【0011】また、螺旋状締付け線をばね鋼で形成する
と、締付け線の細径化と高引張り強度とを両立させるこ
とができるため、真円を保ったままで締付け力を一層高
められる。
Further, when the spiral tightening wire is made of spring steel, it is possible to make both the diameter of the tightening wire and the high tensile strength compatible with each other, so that the tightening force can be further enhanced while keeping the perfect circle.

【0012】[0012]

【実施例】図1(a)(b)は本発明の第1実施例で、
(a)はクランプ装置の平面図、(b)はクランプ装置
の一部を破断した正面図、図1(c)は同図(a)
(b)に示すクランプ装置を排気管に装着した状態を示
す縦断側面図である。
1 (a) and 1 (b) show a first embodiment of the present invention.
1A is a plan view of the clamp device, FIG. 1B is a front view in which a part of the clamp device is broken, and FIG.
It is a vertical side view which shows the state which attached the clamp apparatus shown to (b) to the exhaust pipe.

【0013】同図(a)(b)において、1は螺旋状に
巻いた締付け線で、線径φ4.5のばね鋼が、内径φ4
9の円形の周りに螺旋状にほぼ1.7回巻きで形成して
ある。符号Dはφ49の円形の直径を示す。又符号dは
φ4.5の締付け線の線径を示す。
In FIGS. 1 (a) and 1 (b), reference numeral 1 denotes a tightening wire wound in a spiral shape. Spring steel having a wire diameter of φ4.5 has an inner diameter of φ4.
It is spirally wound around a circle of 9 with about 1.7 turns. Reference numeral D indicates a circular diameter of φ49. The symbol d indicates the diameter of the tightening wire of φ4.5.

【0014】2は一対の締付具本体で、線Y−Yの図示
左右に対称な形状に形成されている。これらの締付具本
体2は、金属板をプレス成形して作られ、前記螺旋状締
付け線1の内周Dで巻かれた外周面(厳密には外周線と
言うべきかも知れない)に沿って摺接すべき滑動曲面2
aと、後述する螺合手段用の座面2bを備えている。
Reference numeral 2 denotes a pair of fastener main bodies, which are formed in a symmetrical shape to the left and right of the line Y-Y in the figure. These tightening tool bodies 2 are made by press-molding a metal plate, and extend along the outer peripheral surface (which may be technically called outer peripheral line) wound around the inner circumference D of the spiral tightening wire 1. Sliding surface 2 to be slid on
a and a seating surface 2b for a screwing means described later.

【0015】なお滑動曲面2aは、螺旋状締付け線1に
当接する側に形成され、座面2bは滑動曲面2aとは反
対の側に形成されている。即ち、締付具本体2の片側と
反対側とにそれぞれ滑動曲面2aと座面2bが形成され
ている。
The sliding curved surface 2a is formed on the side contacting the spiral tightening line 1, and the seat surface 2b is formed on the side opposite to the sliding curved surface 2a. That is, a sliding curved surface 2a and a seating surface 2b are formed on one side and on the other side of the fastening tool body 2, respectively.

【0016】2cはリブで、滑動曲面2aと座面2bの
前後に、滑動曲面2dと座面2bと直角方向に折曲げ形
成され、締付具本体2の剛性を高くする。3は螺合手段
で、座面2b、2bに明けたボルト穴に貫通したボルト
3Aと、該ボルト3Aに螺合したナット3Bと、二つの
ワッシャ3Cとで構成され、ナット3Bを締め付けるこ
とで、一対の締付具本体2、2の座面2b、2bを接近
させて締付け線1の内径Dを縮径させて締付ける。
Reference numeral 2c denotes a rib, which is formed in front of and behind the sliding curved surface 2a and the seat surface 2b by bending in a direction perpendicular to the sliding curved surface 2d and the seat surface 2b, and enhances the rigidity of the fastener body 2. 3 is a screwing means, which is composed of a bolt 3A penetrating through a bolt hole formed in the seat surface 2b, 2b, a nut 3B screwed into the bolt 3A, and two washers 3C. By tightening the nut 3B, , The seat surfaces 2b, 2b of the pair of tightening tool bodies 2, 2 are brought close to each other to reduce the inner diameter D of the tightening wire 1 for tightening.

【0017】なお、締付け線1の両端は、締付具本体
2、2の滑動曲面2a、2aに明けた孔2dに通し、先
端をかしめて、頭部1aを形成することで滑動曲面2
a、2aに係止されている。
Both ends of the tightening wire 1 are passed through the sliding curved surfaces 2a of the tightening tool bodies 2 and 2 and the holes 2d formed in the sliding curved surfaces 2a are crimped to form the head portion 1a, whereby the sliding curved surface 2 is formed.
a, 2a.

【0018】換言すれば、一対の締付具本体2、2の各
滑動曲面2a、2aは、螺旋状締付け線1の端部にそれ
ぞれ係止されている。図1(a)(b)の構成のクラン
プ装置4を自動車用排気管の連結に使用した状態を同図
(c)に示す。
In other words, the sliding curved surfaces 2a, 2a of the pair of tightening tool bodies 2, 2 are respectively locked to the ends of the spiral tightening wire 1. FIG. 1C shows a state in which the clamp device 4 having the configuration shown in FIGS. 1A and 1B is used for connecting an automobile exhaust pipe.

【0019】上流側の排気管5に下流側排気管6を嵌合
し、その外周にクランプ装置4の螺旋状締付け線を嵌め
て、螺合手段3の前記ナット3Bを締め付けることで、
前記両座面2b、2bを近づける。すると、一対の締付
具本体2、2の滑動曲面2a、2aが螺旋状締付け線1
の外周面(外周線)に沿って摺動しながら移動して、締
付け線1により、両排気管5と6を締結する。
By fitting the exhaust pipe 6 on the upstream side to the exhaust pipe 6 on the upstream side, and fitting the spiral tightening wire of the clamp device 4 on the outer periphery thereof, and tightening the nut 3B of the screwing means 3,
The two seat surfaces 2b, 2b are brought close to each other. Then, the sliding curved surfaces 2a, 2a of the pair of tightening tool bodies 2, 2 have the spiral tightening line 1
The exhaust pipes 5 and 6 are fastened by the tightening line 1 while moving along the outer peripheral surface (outer peripheral line) of the.

【0020】図2は本発明の第2実施例に使う締付具本
体2、2と、螺旋状締付け線1を示す一部破断正面図で
ある。この第2実施例は、座面2b、2bが凸曲面に形
成されている点だけが前記第1実施例と異なる。
FIG. 2 is a partially cutaway front view showing the fastener main bodies 2 and 2 used in the second embodiment of the present invention and the spiral fastening line 1. The second embodiment differs from the first embodiment only in that the seat surfaces 2b, 2b are formed into convex curved surfaces.

【0021】そのため、前記ボルト3Aやナット3Bで
両締付具本体2、2を締結して、両者の座面2b、2b
を接近させたときでもボルト・ナットの中心(厳密には
正面からみたときのワッシャ3C、3Cの図示上寸法の
中央部)に常に座面2b、2bが接するので、ボルト・
ナット座面のいわゆるかつぎを防止できる。従ってボル
ト・ナット等の螺合手段を滑らかに締付けられるととも
に、ボルト・ナット等の螺合手段の無理な負荷による破
損を防止できる。
Therefore, both fastening tool bodies 2 and 2 are fastened with the bolts 3A and nuts 3B, and the seating surfaces 2b and 2b of both are fastened.
Since the seating surfaces 2b, 2b are always in contact with the center of the bolt / nut (strictly speaking, the central portion of the washer 3C, 3C when viewed from the front in the upper dimension in the drawing when viewed from the front) even when the bolts are approached,
It is possible to prevent the so-called creases on the nut seat surface. Therefore, the screwing means such as bolts and nuts can be tightened smoothly, and damage to the screwing means such as bolts and nuts due to an unreasonable load can be prevented.

【0022】また、上記両実施例とも、螺旋状締付け線
をばね鋼で形成したので、締付け線の線径の細径化と高
引張り強度を両立できるため、ほぼ直径Dの真円を保っ
たままで締付け力を一層高められる。
Further, in both of the above-mentioned embodiments, since the spiral tightening wire is formed of spring steel, the wire diameter of the tightening wire can be reduced and high tensile strength can be achieved at the same time, so that a perfect circle having a diameter D is maintained. The tightening force can be further increased.

【0023】[0023]

【発明の効果】本発明のクランプ装置は上述のように構
成されているので、結合すべき管の全周にわたり、均一
な締付け力を加えることができる。
Since the clamping device of the present invention is constructed as described above, it is possible to apply a uniform tightening force over the entire circumference of the pipes to be joined.

【0024】しかも、螺旋状締付け線と締付具本体の弾
力で常時締付力が作用するので、車両用の排気管の結合
部のように、温度変化や振動等の過酷な環境条件におい
ても緩みやガス洩れを確実に防止できる。
In addition, since the tightening force is always applied by the elasticity of the spiral tightening wire and the tightening tool body, even under severe environmental conditions such as temperature change and vibration like a joint of an exhaust pipe for a vehicle. Looseness and gas leakage can be reliably prevented.

【0025】また、クランプ装置全体を小形化できるた
め、車両等への搭載性が向上する。また、請求項2記載
の発明では、螺合手段としてのボルトやナットが座面の
凸曲面と接するため、極端に強く締付けて、両座面(2
b)(2b)が極度に接近した状態でも、螺合手段を滑
らかに締付けられるとともに、螺合手段の無理な負荷に
よる折損を防止することができる。
Further, since the entire clamp device can be downsized, the mountability on a vehicle or the like is improved. Further, in the invention according to claim 2, since the bolt and the nut as the screwing means come into contact with the convex curved surface of the seating surface, the bolts and nuts are tightened extremely strongly and both seating surfaces (2
Even when b) and (2b) are extremely close to each other, the screwing means can be smoothly tightened, and breakage due to an excessive load on the screwing means can be prevented.

【0026】さらにまた、請求項3記載の発明では細い
線径の螺旋状締付け線を用いることができ、しかも強い
締付け力に耐えられるため、締付け線がより一層管の外
径になじんで変形し、かつ強い締付け力を発生させられ
る。その結果、自動車排気管のように温度サイクルで熱
膨張と収縮を繰り返すとともに振動衝撃がかかる部分に
用いても、しっかりと締付けることができ、緩みやガス
洩れを一層確実に防止できる。
Furthermore, in the invention according to claim 3, since a spiral tightening wire having a small wire diameter can be used and a strong tightening force can be endured, the tightening wire is further adapted to the outer diameter of the pipe and deformed. And a strong tightening force can be generated. As a result, even when it is used in a portion such as an automobile exhaust pipe that repeatedly undergoes thermal expansion and contraction in a temperature cycle and is subjected to vibration and impact, it can be firmly tightened, and loosening and gas leakage can be prevented more reliably.

【図面の簡単な説明】[Brief description of drawings]

【図1】(a)は本発明の第1実施例の平面図、(b)
は同正面図、(c)は(a)(b)の第1実施例のクラ
ンプ装置を排気管の結合部に使用した状態を示す縦断側
面図である。
FIG. 1A is a plan view of a first embodiment of the present invention, and FIG.
FIG. 3 is a front view of the same, and (c) is a vertical cross-sectional side view showing a state in which the clamp device of the first embodiment of (a) and (b) is used for a coupling portion of an exhaust pipe.

【図2】本発明の第2実施例の正面図である。FIG. 2 is a front view of a second embodiment of the present invention.

【図3】従来技術の斜視図である。FIG. 3 is a perspective view of a conventional technique.

【符号の説明】[Explanation of symbols]

1 螺旋状締付け線 2 締付具本体 2a 滑動曲面 2b 座面 3 螺合手段 3A ボルト 3B ナット 3C 座金 1 Spiral tightening wire 2 Fastener body 2a Sliding curved surface 2b Seat surface 3 Screwing means 3A bolt 3B nut 3C washer

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 螺旋状に巻いた締付け線(1)と、 該締付け線(1)の両端部にそれぞれ係止され、締付け
線(1)の外周面に摺接すべき滑動曲面(2a)と螺合
手段用の座面(2b)とを備えた一対の締付具本体
(2)と、 該一対の締付具本体(2)の座面(2b)に係合して両
座面を近づけることで一対の締付具本体(2)を締結す
る螺合手段(3)とを具備したことを特徴とするクラン
プ装置。
1. A tightening wire (1) wound in a spiral shape, and a sliding curved surface (2a) to be slidably contacted with the outer peripheral surface of the tightening wire (1), which is locked to both ends of the tightening wire (1). And a pair of fastening tool bodies (2) provided with a seating surface (2b) for screwing means, and both seating surfaces by engaging with the seating surfaces (2b) of the pair of fastening tool bodies (2). And a screwing means (3) for fastening a pair of fastening tool bodies (2) by bringing them closer to each other.
【請求項2】 締付具本体(2)の螺合手段用座面(2
b)を凸曲面に形成したことを特徴とする請求項1記載
のクランプ装置。
2. A seat surface (2) for screwing means of a fastener body (2).
The clamp device according to claim 1, wherein b) is formed into a convex curved surface.
【請求項3】 締付け線(1)をばね鋼で形成したこと
を特徴とする請求項1又は2記載のクランプ装置。
3. The clamping device according to claim 1, wherein the tightening wire (1) is made of spring steel.
JP6272788A 1994-11-08 1994-11-08 Clamping device Withdrawn JPH08135864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6272788A JPH08135864A (en) 1994-11-08 1994-11-08 Clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6272788A JPH08135864A (en) 1994-11-08 1994-11-08 Clamping device

Publications (1)

Publication Number Publication Date
JPH08135864A true JPH08135864A (en) 1996-05-31

Family

ID=17518758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6272788A Withdrawn JPH08135864A (en) 1994-11-08 1994-11-08 Clamping device

Country Status (1)

Country Link
JP (1) JPH08135864A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010065753A (en) * 2008-09-10 2010-03-25 Anyx Co Ltd Duct band
JP2016205563A (en) * 2015-04-27 2016-12-08 アイシン高丘株式会社 Clamp apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010065753A (en) * 2008-09-10 2010-03-25 Anyx Co Ltd Duct band
JP2016205563A (en) * 2015-04-27 2016-12-08 アイシン高丘株式会社 Clamp apparatus

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A300 Withdrawal of application because of no request for examination

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Effective date: 20020115