JPH0540371Y2 - - Google Patents

Description

【考案の詳細な説明】 （産業上の利用分野） 本考案はパイプ材の端部を覆い、順方向の流体
を通し逆方向の流体を通さないように作用するチ
エツクバルブを、樹脂製帯状片によつて一体成形
したものである。[Detailed description of the invention] (Field of industrial application) The present invention is a check valve that covers the end of a pipe material and allows fluid to pass in the forward direction but not in the opposite direction. It is integrally molded by.

（従来の技術） 第８図に例示するように、例えば燃料タンクＴ
の燃料補給パイプ材ａのタンク内に開口するパイ
プ端面に順方向に流れる燃料圧力を阻まずに通
し、逆方向の噴き戻しの燃料圧力により鎖線に示
すようにパイプ端面を閉じる弁板ｆを備えるチエ
ツク弁ｂを取付けているものであるが、該チエツ
ク弁ｂは例えばパイプの端面周部に固定する軸支
部材ｃ、軸支部材に設けるストツパｅ、軸支部材
に設けた軸ｄに一端を取付ける前記の弁板ｆ等の
多数の部品を必要とする欠点を持つ。(Prior Art) As illustrated in FIG. 8, for example, a fuel tank T
A valve plate f is provided, which allows the fuel pressure flowing in the forward direction to pass through the end surface of the pipe opening into the tank of the refueling pipe material a without being obstructed, and closes the end surface of the pipe as shown by the chain line by the fuel pressure flowing back in the reverse direction. A check valve b is installed, and the check valve b includes, for example, a shaft support member c fixed to the circumference of the end surface of the pipe, a stopper e provided on the shaft support member, and one end attached to a shaft d provided on the shaft support member. This method has the disadvantage that it requires a large number of parts to be attached, such as the valve plate f mentioned above.

（本考案が解決しようとする問題点・考案の目
的） 従来のチエツク弁は前記の欠点があるのに鑑
み、これを樹脂成形体により一体成形して部品点
数過多の問題点を解決し、かつ考案の目的とする
ものである。(Problems to be solved by the present invention/purpose of the invention) In view of the above-mentioned drawbacks of conventional check valves, we have developed a system that solves the problem of an excessive number of parts by integrally molding the check valve with a resin molded body. This is the purpose of the invention.

（問題点を解決するための手段） 本考案は前記した目的に合致させた構成になる
もので、パイプ材の端面部に取付ける取付部を一
端に形成した樹脂製帯状片に第一区劃、第二区
劃、第三区劃を順次に設け、第一区劃と第二区劃
との間に第二区劃を第一区劃の下面に折り返すた
めの肉薄部を設けると共に、該第一区劃と第二区
劃とを折り返し形に保持する連結部をそれらの区
劃に形成し、第二区劃と第三区劃の間に第三区劃
を前記のパイプ材端面に接合するヒンジを設け、
第三区劃を前記パイプ端面に接合する板状のバル
ブとしたことを特徴とするヒンジ一体型チエツク
バルブに係るものである。(Means for Solving the Problems) The present invention has a structure that meets the above-mentioned purpose, and includes a first section, A second section and a third section are provided in sequence, and a thin section is provided between the first section and the second section for folding the second section back to the underside of the first section. A connecting part that holds the first section and the second section in a folded manner is formed in those sections, and the third section is joined to the end surface of the pipe material between the second section and the third section. A hinge is provided to
This invention relates to a hinge-integrated check valve characterized in that the third section is a plate-shaped valve that is joined to the end surface of the pipe.

（実施例） 第１〜３図は第１実施例を示し、パイプ材ａの
端部周面に取付ける取付片２を一端に形成した合
成樹脂製帯状片１に第一区劃、第二区劃、第
三区劃を順次に設け、第一区劃と第二区劃
の間に、巾を小さくすると共に第二区劃と第一
区劃の裏面に折曲して接合するため下面を凹円
弧形にした肉薄部３を設け、第二区劃と第三区
劃の間に肉薄部３と同様に構成したヒンジ部４
を設け、第三区劃をパイプ材ａの端面を塞ぐ円
板形の弁板とし、さらに第一区劃と第二区劃
に一方を透孔５とし、他方を透孔５に嵌まつて係
合する連結用片６を本考案の連結部の一例として
形成する。(Example) Figures 1 to 3 show a first example, in which a first section and a second section are attached to a synthetic resin strip 1 having a mounting piece 2 formed at one end to be attached to the circumferential surface of the end of a pipe material a. The first and third sections are installed in sequence, and between the first and second sections, the width is reduced and the lower surface is bent to join the backs of the second and first sections. A hinge portion 4 is provided with a thin wall portion 3 having a concave arc shape, and configured in the same manner as the thin wall portion 3 between the second section and the third section.
, the third section is a disk-shaped valve plate that closes the end face of the pipe material a, and the first section and the second section are provided with a through hole 5 on one side and a through hole 5 on the other side. The engaging connecting piece 6 is formed as an example of the connecting part of the present invention.

本実施例は、第３図に示すように第一区劃の
下面に肉薄部３によつて第二区劃を二つ折りに
折返し、かつ連結用片６を透孔５に嵌めて係止
し、ヒンジ部４により第三区劃を弾力的に約
90°に折曲げ、取付片２をパイプ材ａの端面部外
周に適宜に嵌めて使用する。 In this embodiment, as shown in FIG. 3, the second section is folded in half by a thin wall portion 3 on the lower surface of the first section, and a connecting piece 6 is fitted into a through hole 5 and locked. , the third section is elastically compressed by the hinge part 4.
Bend it at 90 degrees and fit the mounting piece 2 appropriately around the outer periphery of the end surface of the pipe material a for use.

この使用状態では第二区劃と第一区劃との
折曲げ密着が肉薄部３によつて生じ、かつ透孔５
と連結用片６の嵌め合わせによりその折曲げを保
持され、ヒンジ部４と第三区劃とによりチエツ
ク弁の作用を生ずる。 In this state of use, the bending and close contact between the second section and the first section is caused by the thin wall portion 3, and the through hole 5
The bent portion is held by the fitting of the connecting piece 6, and the hinge portion 4 and the third section function as a check valve.

第４〜７図は本考案の第２実施例を示し、合成
樹脂製帯状片１１の一端に取付片１２を形成し、
かつ第一区劃、第二区劃、第三区劃を設
け、第一区劃と第二区劃の間に肉薄部１３を
設けること、第一区劃と第二区劃の何れかに
透孔１５と連結用片１６とを設けること、並びに
第二区劃と第三区劃の間にヒンジ部１４を設
けることは第１実施例と同じであるが、弾力補助
ばねを使用できるようにすることに特長がある。 4 to 7 show a second embodiment of the present invention, in which a mounting piece 12 is formed at one end of a synthetic resin strip 11,
In addition, a first section, a second section, and a third section are provided, and a thin section 13 is provided between the first section and the second section, and either of the first section or the second section is provided. The provision of the through hole 15 and the connecting piece 16 and the provision of the hinge portion 14 between the second section and the third section are the same as in the first embodiment, but an elastic auxiliary spring can be used. It is characterized by its ability to

第一区劃にはばね掛け突片２２を巾方向で対
称形に突出した透孔２１を設け、第二区劃に折
曲したとき透孔２１に合致するばね通し孔２３を
設け、第三区劃の円板形の弁板の外面にばね係
合溝２４を設ける。 The first section is provided with a through hole 21 through which the spring hook protrusion 22 protrudes symmetrically in the width direction, the second section is provided with a spring through hole 23 that matches the through hole 21 when bent, and the third section is provided with a spring through hole 23 that matches the through hole 21 when bent. A spring engagement groove 24 is provided on the outer surface of the disc-shaped valve plate in the section.

本実施例は第１実施例と同じく第一区劃の下
面に第二区劃を曲げて接合し、かつ透孔１５と
連結用片１６を嵌め合わせてから、第６図に示し
た線ばね２５に設けたコイル部２６の両側をばね
通し孔２３に通してばね掛け突片２２にかけ、コ
イル部２６から突出する一側片２７を第二区劃
の下面に掛け、他側片２８をばね係合溝２４に線
方向移動自由に掛け、取付片１２をパイプ材ａの
端部周面に適宜に係止し、第三区劃を第７図の
通りにパイプ材ａの端面に弾接する。 In this embodiment, as in the first embodiment, the second section is bent and joined to the lower surface of the first section, and after fitting the through hole 15 and the connecting piece 16, the wire spring shown in FIG. Both sides of the coil part 26 provided in the coil part 25 are passed through the spring through hole 23 and hung on the spring hanging protrusion 22, one side piece 27 protruding from the coil part 26 is hung on the lower surface of the second section, and the other side piece 28 is hung on the spring hanging piece 22. It is hung in the engagement groove 24 so as to be freely movable in the linear direction, the mounting piece 12 is appropriately locked on the peripheral surface of the end of the pipe material a, and the third section is brought into elastic contact with the end surface of the pipe material a as shown in FIG. .

本実施例は燃料タンクＴに先端を挿通した燃料
補給パイプのチエツク弁を示したものである。 This embodiment shows a check valve for a refueling pipe whose tip is inserted into a fuel tank T.

（作用） 本考案は一枚の合成樹脂製帯状片の第一区劃
と第二区劃の折曲げ、及び帯状片に一体形成し
たヒンジ部により弁板を構成する第三区劃によ
りパイプ材の端口を塞がせるチエツク弁を構成す
るものであつて、パイプ材ａを矢線の方向に流れ
る流体があると第三区劃が構成する弁板を作動
してパイプ端口を開き、逆方向の流体圧があると
その圧力によりパイプ端口を閉じて逆流を防ぐ。(Function) The present invention creates a pipe material by bending the first section and the second section of a single synthetic resin strip, and forming the third section which forms a valve plate by means of a hinge part integrally formed on the strip. This constitutes a check valve that closes the end of the pipe, and when there is fluid flowing through the pipe material A in the direction of the arrow, the valve plate constituted by the third section is actuated to open the end of the pipe, and the end of the pipe is opened in the opposite direction. When there is fluid pressure, the pressure closes the end of the pipe to prevent backflow.

（効果） 本考案は取付片と第一区劃、第二区劃、第三区
劃及び第一〜第二区劃の間の肉薄部、第二区劃と
第三区劃の間のヒンジ部を設け、第二区劃を肉
薄部により第一区劃の下面への折返し接合したと
きその接合を保持する連結用片をそれらの区劃に
設け、第三区劃をヒンジ部によりパイプ材の端
面に接合又は接近し、パイプ材を順方向に流れる
流体の圧力により前記の端面を開き、パイプ材の
端面に逆方向の圧力が作用するとき前記の端面を
閉じるチエツク弁の作用を生じさせるもので、一
部品を以てヒンジ部を備えるチエツク弁を形成で
きて、従来のように多数の部品を必要とせず、組
立てについても他の部品を不用にして簡易に施す
ことができる効果をもつ。(Effects) This invention is effective for the thin parts between the mounting piece and the first section, second section, third section, and between the first and second sections, and the hinge between the second section and third section. A connecting piece is provided in those sections to hold the joint when the second section is folded and joined to the lower surface of the first section by the thin section, and the third section is connected to the pipe material by the hinge section. is joined to or approaches the end face of the pipe material, and the said end face is opened by the pressure of the fluid flowing in the forward direction through the pipe material, and when pressure in the opposite direction is applied to the end face of the pipe material, the action of a check valve is produced that closes the said end face. This has the effect that a check valve with a hinge part can be formed from one part, does not require a large number of parts as in the past, and can be easily assembled without the need for other parts.

【図面の簡単な説明】[Brief explanation of the drawing]

第１〜３図は本考案の第１実施例を示し、第１
図は平面図、第２図は縦断側面図、第３図はチエ
ツク弁の縦断側面図である。第４〜７図は第２実
施例を示し、第４図は平面図、第５図は第４図Ａ
−Ａ線切断側面図、第６図は線ばね２５の斜視
図、第７図はチエツク弁の縦断側面図である。第
８図は従来のチエツク弁の一例を示した側面図で
ある。 ……第一区劃、……第二区劃、……第三
区劃、１，１１……合成樹脂製帯状片、２，１２
……取付片、３，１３……肉薄部、４，１４……
ヒンジ部、５，１５……透孔、６，１６……連結
用片、２５……線ばね、２６……コイル部、２７
……一側片、２８……他側片。 1 to 3 show a first embodiment of the present invention.
The figure is a plan view, FIG. 2 is a longitudinal side view, and FIG. 3 is a longitudinal side view of the check valve. Figures 4 to 7 show the second embodiment, Figure 4 is a plan view, and Figure 5 is Figure 4A.
6 is a perspective view of the wire spring 25, and FIG. 7 is a longitudinal sectional side view of the check valve. FIG. 8 is a side view showing an example of a conventional check valve. ...First section, ...Second section, ...Third section, 1,11...Synthetic resin strip, 2,12
...Mounting piece, 3, 13...Thin wall part, 4, 14...
Hinge part, 5, 15... Through hole, 6, 16... Connection piece, 25... Wire spring, 26... Coil part, 27
...one side piece, 28...other side piece.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] パイプ材の端面部に取付ける取付部を一端に形
成した樹脂製帯状片に第一区劃、第二区劃、第三
区劃を順次に設け、第一区劃と第二区劃との間に
第二区劃を第一区劃の下面に折り返すための肉薄
部を設けると共に、該第一区劃と第二区劃とを折
り返し形に保持する連結部をそれらの区劃に形成
し、第二区劃と第三区劃の間に第三区劃を前記の
パイプ材端面に接合するヒンジを設け、第三区劃
を前記パイプ端面に接合する板状のバルブとした
ことを特徴とするヒンジ一体型チエツクバルブ。 A first section, a second section, and a third section are sequentially provided on a resin strip having a mounting section formed at one end to be attached to the end surface of the pipe material, and between the first section and the second section. A thin wall portion is provided for folding the second section to the lower surface of the first section, and a connecting section for holding the first section and the second section in the folded shape is formed in those sections; A hinge is provided between the second section and the third section to connect the third section to the end surface of the pipe material, and the third section is a plate-shaped valve that is connected to the end surface of the pipe. Check valve with integrated hinge.