JP6974875B2

JP6974875B2 - Pipe wrench

Info

Publication number: JP6974875B2
Application number: JP2020002792A
Authority: JP
Inventors: 呉傳福
Original assignee: 伯▲きん▼工具股▲ふん▼有限公司
Priority date: 2019-01-15
Filing date: 2020-01-10
Publication date: 2021-12-01
Anticipated expiration: 2040-01-10
Also published as: TWI679088B; TW202027920A; JP2020110913A; CN111434463A; AU2020200141B2; CN111434463B; AU2020200141A1

Description

本発明は、パイプレンチに関するものである。 The present invention relates to a pipe wrench.

一般的なパイプレンチは、互いに枢着する、第１クランプ本体と、第２クランプ本体と、を備える。前記第１クランプ本体にスライド溝が設けられている。スライド溝内に枢着ピンが設けられている。前記第２クランプ本体が前記枢着ピンに枢着されていることにより、前記第２クランプ本体は、前記第１クランプ本体に対してスライドし、又は旋回することができる。前記クランプ本体の第１歯部は、常時前記枢着ピンの第２歯部と噛み合う。前記枢着ピンを押圧することにより、前記第１歯部が第２歯部から離脱して、前記枢着ピンと前記第１クランプ本体とは、前記第１クランプ本体に対してスライドすることができる。これにより、前記第１クランプ本体の固定な第１挟み部と前記第２クランプ本体の自在な第２挟み部との間の距離を調整することができる。調整した後、前記第２クランプ本体を旋回して、自在な前記第２挟み部は、固定な前記第１挟み部へ旋回して、水管の四角形または六角形のジョイントを挟むことが可能である。中国ＣＮ２０４８４３８９５号に開示したパイプレンチは、以上のようなものである。
また、第１クランプ本体と第２クランプ本体とパイプレンチ全体との噛合いの密着度を改善するために、枢着ピンの底部には、枢着ピンに弾性的に押し付ける弾性部材が設けられている。これにより、枢着ピンの第２歯部とクランプ本体の第１歯部との噛合いを確保することができる。例えばＣＮ１０６１０３０００号、ＵＳ２５５７２９６号、ＵＳ４２６９０８９号、ＵＳ２０１７／００６６１１２号などは、以上のようなものである。 A general pipe wrench includes a first clamp body and a second clamp body that are pivotally attached to each other. A slide groove is provided in the first clamp body. A pivot pin is provided in the slide groove. Since the second clamp body is pivotally attached to the pivot pin, the second clamp body can slide or rotate with respect to the first clamp body. The first tooth portion of the clamp body always meshes with the second tooth portion of the pivot pin. By pressing the pivot pin, the first tooth portion is separated from the second tooth portion, and the pivot pin and the first clamp body can slide with respect to the first clamp body. .. Thereby, the distance between the fixed first sandwiched portion of the first clamp body and the free second clamped portion of the second clamp body can be adjusted. After the adjustment, the second clamp body can be swiveled so that the free second pinch can swivel to the fixed first pinch to clamp the quadrangular or hexagonal joint of the water pipe. .. The pipe wrench disclosed in China CN204843895 is as described above.
Further, in order to improve the degree of adhesion between the first clamp main body, the second clamp main body and the entire pipe wrench, an elastic member elastically pressed against the pivot pin is provided at the bottom of the pivot pin. There is. Thereby, the meshing between the second tooth portion of the pivot pin and the first tooth portion of the clamp body can be ensured. For example, CN1061033000, US2557296, US4269089, US2017 / 0066112, etc. are as described above.

しかし、このような従来のパイプレンチには、下記のような欠点がある。
平常時に、第１歯部は第２歯部と噛み合うが、前記枢着ピンの軸方向に沿って前記枢着ピンを押圧すると、前記第１歯部は前記第２歯部から容易に離脱することができ、前記枢着ピンと前記第１クランプ本体とは前記第１クランプ本体に対してスライドすることができるが、前記枢着ピンをリリースするときに、図１４に示すように、前記第１歯部Ｂ１と前記第２歯部Ｂ２とは、相対的に水平に移動した後、歯の距離および形状により、前記第１歯部の歯峰と前記第２歯部の歯元とは、枢着ピンＢ３の軸方向に沿って互いに係合することができず、前記枢着ピンの第２歯部は、第１歯部と容易に噛み合うことができない。これにより、前記枢着ピンはロック位置に位置決めることができず、前記枢着ピンと前記第１クランプ本体とは、前記第１クランプ本体に対してスライドする可能性がある。このとき、ユーザーは、前記枢着ピンと前記第１クランプ本体との相対位置を手動で微調整することが必要である。このため、従来のパイプレンチの使用性は良くない。 However, such a conventional pipe wrench has the following drawbacks.
In normal times, the first tooth portion meshes with the second tooth portion, but when the pivot pin is pressed along the axial direction of the pivot pin, the first tooth portion is easily separated from the second tooth portion. The pivot pin and the first clamp body can slide with respect to the first clamp body, but when the pivot pin is released, as shown in FIG. 14, the first clamp body can be slid. After the tooth portion B1 and the second tooth portion B2 move relatively horizontally, the tooth peak of the first tooth portion and the tooth root of the second tooth portion are pivotally located depending on the distance and shape of the teeth. The attachment pins B3 cannot be engaged with each other along the axial direction, and the second tooth portion of the pivot pin cannot be easily meshed with the first tooth portion. As a result, the pivot pin cannot be positioned at the locked position, and the pivot pin and the first clamp main body may slide with respect to the first clamp main body. At this time, the user needs to manually fine-tune the relative position between the pivot pin and the first clamp main body. Therefore, the usability of the conventional pipe wrench is not good.

ＣＮ２０４８４３８９５号公報CN204843895 Gazette ＣＮ１０６１０３０００号公報CN1061033000 Gazette ＵＳ２５５７２９６号公報US255296A Gazette ＵＳ４２６９０８９号公報US4269089 Gazette ＵＳ２０１７／００６６１１２号公報US2017 / 0066112 Gazette

本発明の主な目的は、枢着ピンをリリースするときに、第１クランプ本体の歯付きガイド溝を、枢着ピンの規制歯部に容易に位置合わせることができるため、枢着ピンを迅速に位置合わせることができ、歯付きガイド溝が規制歯部と容易に噛み合うことができ、ロック位置またはリリース位置に、枢着ピンを迅速に切り替えることができ、作業効率を有効に向上することが可能なパイプレンチを提供することにある。 A main object of the present invention is to quickly align the toothed guide groove of the first clamp body with the restricting tooth portion of the pivot pin when the pivot pin is released. The toothed guide groove can be easily engaged with the regulated tooth part, and the pivot pin can be quickly switched to the lock position or the release position, which can effectively improve the work efficiency. It is to provide a possible pipe wrench.

本発明に係るパイプレンチは、第１ハンドル部と、第１挟み部と、第１ハンドル部と第１挟み部との間に連接されている身部と、を備え、身部に歯付きガイド溝が少なくとも一つ設けられている第１クランプ本体と、位置が規制可能なように、歯付きガイド溝にスライド可能に設けられており、軸方向に沿ってロック位置とリリース位置の間にスライド可能であり、少なくとも一つの規制歯部と少なくとも一つの弾性付き押付部材とが設けられており、各弾性付き押付部材は、軸方向に沿って規制歯部に対応する枢着ピンと、第２ハンドル部と、枢着穴と、第２挟み部と、を備え、枢着ピンは枢着穴を挿通し、第１クランプ本体に対してスライドし、又は旋回することにより、第１挟み部は第２挟み部に対して移動する第２クランプ本体と、を備えるパイプレンチにおいて、枢着ピンがロック位置に位置するときには、規制歯部が歯付きガイド溝と噛み合い、弾性付き押付部材が歯付きガイド溝と係合せず、枢着ピンがリリース位置に移動すると、規制歯部は歯付きガイド溝から離脱し、弾性付き押付部材が離脱可能に歯付きガイド溝の歯同士の隙間と係合することを特徴とする。 The pipe wrench according to the present invention includes a first handle portion, a first pinching portion, and a body portion connected between the first handle portion and the first pinching portion, and a toothed guide is provided on the body portion. The first clamp body is provided with at least one groove, and the toothed guide groove is provided so as to be slidable so that the position can be regulated, and slides between the lock position and the release position along the axial direction. It is possible, and at least one regulating tooth portion and at least one elastic pressing member are provided, and each elastic pressing member has a pivot pin corresponding to the restricting tooth portion along the axial direction and a second handle. The first pinching portion is provided with a portion, a pivoting hole, and a second pinching portion, and the pivoting pin inserts the pivoting hole and slides or turns with respect to the first clamp body, so that the first pinching portion is the first. 2 In a pipe wrench provided with a second clamp body that moves with respect to the pinching portion, when the pivot pin is located at the locked position, the restricting tooth portion meshes with the toothed guide groove, and the elastic pressing member is a toothed guide. When the pivot pin moves to the release position without engaging with the groove, the restricting tooth part disengages from the toothed guide groove, and the elastic pressing member engages with the gap between the teeth of the toothed guide groove so that it can disengage. It is characterized by.

本発明に係るパイプレンチは、弾性付き押付部材は、係合部材と、第２弾性部材と、を備え、枢着ピンに収容穴が少なくとも一つ設けられており、弾性付き押付部材の係合部材と第２弾性部材とは、収容穴に収容されることを特徴とする。 In the pipe wrench according to the present invention, the elastic pressing member includes an engaging member and a second elastic member, and the pivot pin is provided with at least one accommodating hole, and the elastic pressing member is engaged. The member and the second elastic member are characterized in that they are accommodated in the accommodating holes.

本発明に係るパイプレンチは、第２弾性部材により、係合部材は収容穴の外側へ付勢され、係合部材はボールであり、収容穴の穴径は、ボールの直径よりやや大きく、かしめにより、ボールは収容穴の表面から脱落することはないことを特徴とする。 In the pipe wrench according to the present invention, the engaging member is urged to the outside of the accommodating hole by the second elastic member, the engaging member is a ball, and the hole diameter of the accommodating hole is slightly larger than the diameter of the ball and is crimped. Therefore, the ball does not fall off from the surface of the accommodating hole.

本発明に係るパイプレンチは、枢着ピンは、第１連接部材と、第２連接部材と、を備え、第１連接部材にロッドが連接されており、ロッドは第２クランプ本体の枢着穴を挿通し、第２連接部材はロッドの一端に当接し、第１弾性部材はロッドに嵌め設けられていることを特徴とする。 In the pipe wrench according to the present invention, the pivoting pin includes a first connecting member and a second connecting member, and a rod is connected to the first connecting member, and the rod is a pivoting hole of the second clamp body. The second articulated member is in contact with one end of the rod, and the first elastic member is fitted and provided on the rod.

本発明に係るパイプレンチは、第１連接部材の前記第２連接部材から離れた一端に径方向に突出する第１ヘッド部が設けられており、第２連接部材の前記第１連接部材から離れた一端に径方向に突出する第２ヘッド部が設けられており、第１ヘッド部と第２ヘッド部との直径は歯付きガイド溝の幅より大きいことを特徴とする。 The pipe wrench according to the present invention is provided with a first head portion that protrudes in the radial direction at one end of the first connecting member away from the second connecting member, and is separated from the first connecting member of the second connecting member. A second head portion protruding in the radial direction is provided at one end thereof, and the diameter of the first head portion and the second head portion is larger than the width of the toothed guide groove.

本発明に係るパイプレンチは、ロッドの第１ヘッド部から遠く離れた一端に、直径がより小さい凸部が設けられており、凸部は第２連接部材の穿孔に差し込まれており、ロック部材は、穿孔の第１連接部材から遠く離れた一側から、凸部に螺着されており、ロック部材の最大の径方向の寸法は、穿孔の径方向の寸法より大きく、ロッドの径方向の両側には、係合凹みがそれぞれ設けられており、第２連接部材の第１連接部材に向く一側に窪みが設けられており、ロッドは窪みに差し込まれており、窪みは穿孔と連通し、窪みの内周壁に係合突起が二つ設けられており、二つの係合突起は、それぞれ二つの係合凹みと係合することを特徴とする。 The pipe wrench according to the present invention is provided with a convex portion having a smaller diameter at one end far away from the first head portion of the rod, and the convex portion is inserted into the perforation of the second connecting member and is a lock member. Is screwed onto the convex portion from one side far away from the first articulating member of the perforation, and the maximum radial dimension of the locking member is greater than the radial dimension of the perforation and is radial of the rod. Engagement recesses are provided on both sides, a recess is provided on one side of the second articulating member facing the first articulating member, the rod is inserted into the recess, and the recess communicates with the perforation. The inner peripheral wall of the recess is provided with two engaging protrusions, each of which engages with two engaging recesses.

本発明に係るパイプレンチは、各規制歯部の軸方向に沿う一側に斜面段が設けられており、枢着ピンがリリース位置に移動すると、規制歯部の斜面段は、それに対応する歯付きガイド溝に向くことを特徴とする。 The pipe wrench according to the present invention is provided with a slope step on one side along the axial direction of each regulated tooth portion, and when the pivot pin moves to the release position, the slope step of the regulated tooth portion has a corresponding tooth. It is characterized by facing the attached guide groove.

本発明に係るパイプレンチは、規制歯部とそれに対応する弾性付き押付部材との軸方向に沿う最小距離を第１長さとし、歯付きガイド溝の軸方向に沿う厚さを第２長さとする場合には、第２長さが第１長さより大きいことを特徴とする。 In the pipe wrench according to the present invention, the minimum distance along the axial direction between the regulated tooth portion and the corresponding elastic pressing member is defined as the first length, and the thickness along the axial direction of the toothed guide groove is defined as the second length. In some cases, the second length is larger than the first length.

本発明に係るパイプレンチは、第１連接部材の底縁と、それに対向する歯付きガイド溝の外縁との間の軸方向に沿う距離を第３長さとする場合には、第３長さが第２長さより大きいことを特徴とする。 The pipe wrench according to the present invention has a third length when the distance along the axial direction between the bottom edge of the first connecting member and the outer edge of the toothed guide groove facing the bottom edge is the third length. It is characterized by being larger than the second length.

本発明に係るパイプレンチは、第２クランプ本体に仕切板が二つ設けられており、枢着穴は二つの仕切板に設けられており、第１クランプ本体は二つの仕切板の間に設けられており、枢着ピンは二つの仕切板の枢着穴を挿通することを特徴とする。 In the pipe wrench according to the present invention, the second clamp main body is provided with two partition plates, the pivot hole is provided in the two partition plates, and the first clamp main body is provided between the two partition plates. The wrench pin is characterized by inserting the pivot holes of the two dividers.

本発明に係るパイプレンチは、身部は、互いに対向する二つの側板を備え、前記二つの側板に歯付きガイド溝がそれぞれ設けられており、二つの側板の間に収容空間が形成され、二つの側板の互いに対向する側面にスライド溝がそれぞれ設けられており、二つのスライド溝は、二つの歯付きガイド溝に平行でありながら重ならず、第２クランプ本体は、駆動ハンドルと、挟み部材と、を備え、駆動ハンドルと第１クランプ本体とは、枢着ピンに枢着されており、駆動ハンドルは、一端に第２ハンドル部が設けられており、他端に突起が設けられており、駆動ハンドルに枢着穴が設けられており、枢着ピンは枢着穴を挿通し、挟み部材は、互いに連接する、第２挟み部と、スライドブロックと、を備え、スライドブロックは二つのスライド溝をスライドし、挟み部材に凹部が設けられており、突起は凹部内に当接し、駆動ハンドルが第１クランプ本体に対してスライドし、又は旋回することにより、突起は、挟み部材の第１クランプ本体に対するスライドをコントロールすることが可能であることを特徴とする。 In the pipe wrench according to the present invention, the body portion is provided with two side plates facing each other, each of the two side plates is provided with a toothed guide groove, and a storage space is formed between the two side plates. Slide grooves are provided on the opposite side surfaces of the side plates, and the two slide grooves are parallel to the two toothed guide grooves but do not overlap, and the second clamp body has a drive handle and a pinching member. , The drive handle and the first clamp body are pivotally attached to a pivot pin, and the drive handle is provided with a second handle portion at one end and a protrusion at the other end. The drive handle is provided with a pivot hole, the pivot pin inserts the pivot hole, and the clamp members are provided with a second clamp and a slide block that are connected to each other, and the slide block has two slides. The groove is slid, and a recess is provided in the sandwiching member. The protrusion abuts in the recess, and the drive handle slides or turns with respect to the first clamp body, so that the protrusion is the first of the sandwiching members. It is characterized in that it is possible to control the slide with respect to the clamp body.

本発明に係るパイプレンチは、枢着ピンには、更に、第１弾性部材が設けられており、第１弾性部材は、駆動ハンドルと枢着ピンとの間に設けられており、両方に弾性的に押し付けて、枢着ピンがロック位置へ付勢されることを特徴とする。 In the pipe wrench according to the present invention, the pivot pin is further provided with a first elastic member, and the first elastic member is provided between the drive handle and the pivot pin, and is elastic in both. It is characterized in that the pivot pin is urged to the locked position by pressing against.

本発明に係るパイプレンチは、弾性付き押付部材の中心は、規制歯部の何れかの歯の中心と同じであることを特徴とする。 The pipe wrench according to the present invention is characterized in that the center of the elastic pressing member is the same as the center of any tooth of the regulated tooth portion.

本発明に係るパイプレンチは、枢着ピンをリリースするときに、第１クランプ本体の歯付きガイド溝を、枢着ピンの規制歯部に容易に位置合わせることができるため、枢着ピンを迅速に位置合わせることができ、歯付きガイド溝が規制歯部と容易に噛み合うことができ、ロック位置またはリリース位置に、枢着ピンを迅速に切り替えることができ、作業効率を有効に向上することが可能であるという効果を有する。 The pipe wrench according to the present invention can easily align the toothed guide groove of the first clamp body with the restricting tooth portion of the pivot pin when the pivot pin is released, so that the pivot pin can be quickly aligned. It can be aligned to, the toothed guide groove can be easily engaged with the regulated tooth part, and the pivot pin can be quickly switched to the lock position or release position, which can effectively improve work efficiency. It has the effect of being possible.

本発明の一実施形態に係るパイプレンチを示す斜視図である。It is a perspective view which shows the pipe wrench which concerns on one Embodiment of this invention. 本発明の一実施形態に係るパイプレンチを示す分解斜視図である。It is an exploded perspective view which shows the pipe wrench which concerns on one Embodiment of this invention. 本発明の一実施形態に係るパイプレンチの一部を示す斜視図である。It is a perspective view which shows a part of the pipe wrench which concerns on one Embodiment of this invention. 本発明の一実施形態に係るパイプレンチを示す別の斜視図である。It is another perspective view which shows the pipe wrench which concerns on one Embodiment of this invention. 本発明の一実施形態に係る枢着ピンがロック位置に位置する状態を示す断面図である。It is sectional drawing which shows the state which the pivot pin which concerns on one Embodiment of this invention is located at a lock position. 図５の一部を示す拡大図である。It is an enlarged view which shows a part of FIG. 本発明の一実施形態に係る枢着ピンが、半分にリリースされる位置に移動したときの操作を示す断面図である。It is sectional drawing which shows the operation when the pivot pin which concerns on one Embodiment of this invention moves to the position which is released in half. 本発明の一実施形態に係る枢着ピンが、完全にリリースされる位置に移動したときの操作を示す断面図である。It is sectional drawing which shows the operation when the pivot pin which concerns on one Embodiment of this invention moves to the position which is completely released. 本発明の一実施形態に係るパイプレンチの操作を示す図である。It is a figure which shows the operation of the pipe wrench which concerns on one Embodiment of this invention. 本発明の一実施形態に係るパイプレンチの操作を示す図である。It is a figure which shows the operation of the pipe wrench which concerns on one Embodiment of this invention. 図８の操作を示すＡ−Ａ線の断面図である。It is sectional drawing of the line AA which shows the operation of FIG. 図８の操作を示すＡ−Ａ線の断面図である。It is sectional drawing of the line AA which shows the operation of FIG. 本発明の別の実施形態に係るパイプレンチを示す斜視図である。It is a perspective view which shows the pipe wrench which concerns on another embodiment of this invention. 本発明の別の実施形態に係るパイプレンチを示す分解斜視図である。It is an exploded perspective view which shows the pipe wrench which concerns on another embodiment of this invention. 従来のパイプレンチの枢着ピンの操作を示す断面図である。It is sectional drawing which shows the operation of the pivot pin of the conventional pipe wrench.

以下、本発明の実施の形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１から図１１を参照する。本発明の一実施形態に係るパイプレンチは、第１クランプ本体１と、枢着ピン２と、第２クランプ本体５と、を備える。 1 to 11 will be referred to. The pipe wrench according to the embodiment of the present invention includes a first clamp main body 1, a pivot pin 2, and a second clamp main body 5.

第１クランプ本体１は、第１ハンドル部１１と、第１挟み部１２と、第１ハンドル部１１と第１挟み部１２との間に連接されている身部１３と、を備える。身部１３に歯付きガイド溝１４が少なくとも一つ設けられている。 The first clamp main body 1 includes a first handle portion 11, a first sandwiching portion 12, and a body portion 13 connected between the first handle portion 11 and the first sandwiching portion 12. The body portion 13 is provided with at least one toothed guide groove 14.

枢着ピン２は、位置が規制可能なように、歯付きガイド溝１４にスライド可能に設けられており、軸方向に沿ってロック位置とリリース位置の間にスライド可能であり、少なくとも一つの規制歯部２２と少なくとも一つの弾性付き押付部材２３とが設けられている。各弾性付き押付部材２３は、前記軸方向に沿って２２規制歯部に対応する。 The pivot pin 2 is slidably provided in the toothed guide groove 14 so that the position can be regulated, and can be slidable between the lock position and the release position along the axial direction, and at least one regulation. A tooth portion 22 and at least one elastic pressing member 23 are provided. Each elastic pressing member 23 corresponds to the 22-regulated tooth portion along the axial direction.

第２クランプ本体５は、第２ハンドル部３１と、枢着穴３３と、第２挟み部４１と、を備える。枢着ピン２は枢着穴３３を挿通する。第２クランプ本体５は、第１クランプ本体１に対してスライドし、又は旋回することにより、第１挟み部１２は第２挟み部４１に対して移動する。 The second clamp main body 5 includes a second handle portion 31, a pivot hole 33, and a second sandwiching portion 41. The pivot pin 2 inserts the pivot hole 33. The second clamp body 5 slides or turns with respect to the first clamp body 1, so that the first clamp portion 12 moves with respect to the second clamp portion 41.

枢着ピン２が前記ロック位置に位置するときには、図５に示すように、規制歯部２２が歯付きガイド溝１４と噛み合い、弾性付き押付部材２３の係合部材２３１が歯付きガイド溝１４と係合せず、枢着ピン２と第２クランプ本体５とは、歯付きガイド溝１４に対してスライドすることができない。枢着ピン２が前記リリース位置に移動すると、図６及び図７に示すように、規制歯部２２は歯付きガイド溝１４から離脱し、弾性付き押付部材２３が離脱して歯付きガイド溝１４の歯同士の隙間と係合する。詳細には、枢着ピン２を少し押圧すると、弾性付き押付部材２３が歯付きガイド溝１４の歯同士の隙間に入る。枢着ピン２を底まで押圧して完全にリリースされた位置に位置するときに、規制歯部２２は、歯付きガイド溝１４から離脱して、歯付きガイド溝１４に沿って枢着ピン２を移動することができ、これにより、パイプレンチの開口の開きの大きさを変更することができる。このとき、弾性付き押付部材２は、繰り返して押さえられて戻しても、何時も歯付きガイド溝１４の歯同士の隙間と係合する。枢着ピン２をリリースすると、弾性付き押付部材２３によるガイドにより、規制歯部２２と歯付きガイド溝１４とが容易に噛み合い、何れかの位置に位置しても、容易に戻して再度ロックすることができる。そして、枢着ピン２が歯付きガイド溝１４をスライドして何れかの位置に位置するときに、弾性付き押付部材２３は、歯付きガイド溝１４の歯峰に近接する部位に押さえられて退行し、第１歯部の歯元に近接する箇所で、戻されて歯付きガイド溝の歯同士の隙間に直接に進入し、上記の動作が繰り返して行われる。
図１０及び図１１に示すように、弾性付き押付部材２３が歯付きガイド溝１４で前進または退行を行うことができることにより、枢着ピン２と第２クランプ本体５とは、歯付きガイド溝１４の延び方向に沿ってスライドすることができる。これにより、第２クランプ本体５と第１クランプ本体１との相対位置を迅速に調整することができる。そして、弾性付き押付部材２３は歯付きガイド溝１４の歯同士の隙間と係合することができ、指で枢着ピン２をリリースすると、ロック状態に戻して、弾性付き押付部材２３は、歯付きガイド溝１４の歯峰に垂直する点に位置するとき以外、自動的にガイドされて歯付きガイド溝１４の歯同士の隙間に入る。
弾性付き押付部材２３の中心は、規制歯部２２の何れかの歯の中心と同じである。これにより、規制歯部２２と歯付きガイド溝１４とは、容易に噛み合ってロックすることができるため、枢着ピン２を前記ロック位置に位置合わせようとするときに、規制歯部２２と歯付きガイド溝１４とを迅速で容易に位置合わせして噛み合うことができる。このため、規制歯部２２と歯付きガイド溝１４とは、前記軸方向に沿って両方の歯面が互いに係合することにより、枢着ピン２が前記ロック位置に位置合わせることができないことを防止することが可能である。本発明によれば、歯付きガイド溝１４と規制歯部２２とが容易に噛み合うことができるため、前記ロック位置または前記リリース位置に枢着ピン２を迅速に切り替えることができ、作業効率を有効に向上することができる。 When the pivot pin 2 is located at the locked position, as shown in FIG. 5, the restricting tooth portion 22 meshes with the toothed guide groove 14, and the engaging member 231 of the elastic pressing member 23 engages with the toothed guide groove 14. Without engaging, the pivot pin 2 and the second clamp body 5 cannot slide with respect to the toothed guide groove 14. When the pivot pin 2 moves to the release position, as shown in FIGS. 6 and 7, the restricting tooth portion 22 is detached from the toothed guide groove 14, and the elastic pressing member 23 is detached from the toothed guide groove 14. Engage with the gap between the teeth. Specifically, when the pivot pin 2 is slightly pressed, the elastic pressing member 23 enters the gap between the teeth of the toothed guide groove 14. When the pivot pin 2 is pressed to the bottom and is in the fully released position, the restricting tooth portion 22 disengages from the toothed guide groove 14 and the pivot pin 2 is provided along the toothed guide groove 14. Can be moved, thereby changing the size of the opening of the pipe wrench. At this time, the elastic pressing member 2 always engages with the gap between the teeth of the toothed guide groove 14 even if it is repeatedly pressed and returned. When the pivot pin 2 is released, the regulated tooth portion 22 and the toothed guide groove 14 are easily engaged by the guide by the elastic pressing member 23, and even if they are located at any position, they are easily returned and locked again. be able to. Then, when the pivot pin 2 slides on the toothed guide groove 14 and is positioned at any position, the elastic pressing member 23 is pressed by a portion close to the tooth peak of the toothed guide groove 14 and regresses. Then, at a position close to the tooth root of the first tooth portion, the tooth is returned and directly enters the gap between the teeth of the toothed guide groove, and the above operation is repeated.
As shown in FIGS. 10 and 11, the elastic pressing member 23 can move forward or backward in the toothed guide groove 14, so that the pivot pin 2 and the second clamp body 5 are separated from each other by the toothed guide groove 14. Can slide along the direction of extension of. Thereby, the relative position between the second clamp main body 5 and the first clamp main body 1 can be quickly adjusted. Then, the elastic pressing member 23 can engage with the gap between the teeth of the toothed guide groove 14, and when the pivot pin 2 is released with a finger, the elastic pressing member 23 is returned to the locked state, and the elastic pressing member 23 has teeth. It is automatically guided into the gap between the teeth of the toothed guide groove 14 except when it is located at a point perpendicular to the tooth peak of the toothed guide groove 14.
The center of the elastic pressing member 23 is the same as the center of any tooth of the restricting tooth portion 22. As a result, the regulated tooth portion 22 and the toothed guide groove 14 can be easily engaged and locked. Therefore, when the pivot pin 2 is to be aligned with the locked position, the regulated tooth portion 22 and the tooth The attached guide groove 14 can be quickly and easily aligned and meshed with the guide groove 14. Therefore, the restricted tooth portion 22 and the toothed guide groove 14 cannot align the pivot pin 2 with the locked position because both tooth surfaces engage with each other along the axial direction. It is possible to prevent it. According to the present invention, since the toothed guide groove 14 and the restricting tooth portion 22 can be easily meshed with each other, the pivot pin 2 can be quickly switched to the lock position or the release position, and the work efficiency is effective. Can be improved.

具体的には、本実施形態に係る身部１３は、互いに対向する二つの側板１３１を備える。二つの側板１３１に歯付きガイド溝１４がそれぞれ設けられている。二つの側板１３１の間に収容空間１５が形成される。二つの側板１３１の互いに対向する側面に、スライド溝１６がそれぞれ設けられている。二つのスライド溝１６は、二つの歯付きガイド溝１４に平行でありながら重ならない。
第２クランプ本体５は、駆動ハンドル３と、挟み部材４と、を備える。駆動ハンドル３と第１クランプ本体１とは、枢着ピン２に枢着されている。駆動ハンドル３は、一端に第２ハンドル部３１が設けられており、他端に突起３２が設けられている。駆動ハンドル３に枢着穴３３が設けられている。挟み部材４は、互いに連接する、第２挟み部４１と、スライドブロック４２と、を備える。スライドブロック４２は、二つのスライド溝１６にスライド可能に設けられている。挟み部材４に凹部４３が設けられている。突起３２は凹部４３内に差し込む。駆動ハンドル３が第１クランプ本体１に対してスライドし、又は旋回することにより、突起３２は、挟み部材４の第１クランプ本体１に対するスライドをコントロールすることができる。これにより、第１挟み部１２と第２挟み部４１とにより、チューブを容易に挟むことができる。
本実施形態に係る挟み部材４のスライドブロック４２は、矩形の断面形状を呈し、コ字形を呈する溝である二つのスライド溝１６に合うことができる。凹部４３はスライドブロック４２に設けられている。もちろん、例えば、スライドブロック４２は円形の断面形状を呈し、二つのスライド溝１６は円弧形の断面形状を呈してもよい。本実施形態に係る枢着ピン２には、更に、第１弾性部材２４が設けられている。第１弾性部材２４は、駆動ハンドル３と枢着ピン２との間に設けられており、両方に弾性的に押し付けることにより、枢着ピン２が前記ロック位置へ付勢される。これにより、枢着ピン２は、外力を受けていないときに、前記ロック位置に自動的に位置合わせることができる。 Specifically, the body portion 13 according to the present embodiment includes two side plates 131 facing each other. The two side plates 131 are each provided with a toothed guide groove 14. A storage space 15 is formed between the two side plates 131. Slide grooves 16 are provided on the side surfaces of the two side plates 131 facing each other. The two slide grooves 16 are parallel to the two toothed guide grooves 14 but do not overlap.
The second clamp main body 5 includes a drive handle 3 and a sandwiching member 4. The drive handle 3 and the first clamp body 1 are pivotally attached to the pivot pin 2. The drive handle 3 is provided with a second handle portion 31 at one end and a protrusion 32 at the other end. The drive handle 3 is provided with a pivot hole 33. The sandwiching member 4 includes a second sandwiching portion 41 and a slide block 42 that are connected to each other. The slide block 42 is slidably provided in the two slide grooves 16. The sandwiching member 4 is provided with a recess 43. The protrusion 32 is inserted into the recess 43. When the drive handle 3 slides or turns with respect to the first clamp main body 1, the protrusion 32 can control the slide of the sandwiching member 4 with respect to the first clamp main body 1. Thereby, the tube can be easily sandwiched by the first sandwiching portion 12 and the second sandwiching portion 41.
The slide block 42 of the sandwiching member 4 according to the present embodiment has a rectangular cross-sectional shape and can fit into two slide grooves 16 which are grooves having a U-shape. The recess 43 is provided in the slide block 42. Of course, for example, the slide block 42 may have a circular cross-sectional shape, and the two slide grooves 16 may have an arc-shaped cross-sectional shape. The pivot pin 2 according to the present embodiment is further provided with a first elastic member 24. The first elastic member 24 is provided between the drive handle 3 and the pivot pin 2, and the pivot pin 2 is urged to the locked position by elastically pressing against both. As a result, the pivot pin 2 can be automatically aligned with the lock position when no external force is applied.

各弾性付き押付部材２３は、係合部材２３１と、第２弾性部材２３２と、を備える。枢着ピン２に収容穴２８が少なくとも一つ設けられている。各弾性付き押付部材２３の係合部材２３１と第２弾性部材２３２とは、収容穴２８に収容される。第２弾性部材２３２により、係合部材２３１が収容穴２８の外側へ付勢される。本実施形態に係る係合部材２３１は、ボールであるため、歯付きガイド溝１４を容易に越えることができる。収容穴２８の穴径は、前記ボールの直径よりやや大きい。かしめを採用することにより、前記ボールは収容穴２８の表面から脱落することを防止することができる。 Each elastic pressing member 23 includes an engaging member 231 and a second elastic member 232. The pivot pin 2 is provided with at least one accommodating hole 28. The engaging member 231 and the second elastic member 232 of each elastic pressing member 23 are accommodated in the accommodating hole 28. The engagement member 231 is urged to the outside of the accommodating hole 28 by the second elastic member 232. Since the engaging member 231 according to the present embodiment is a ball, it can easily cross the toothed guide groove 14. The hole diameter of the accommodating hole 28 is slightly larger than the diameter of the ball. By adopting caulking, the ball can be prevented from falling off from the surface of the accommodating hole 28.

枢着ピン２は、第１連接部材２５と、第２連接部材２６と、を備えることが好ましい。第１連接部材２５には、それと連接するロッド２５１が設けられている。ロッド２５１は第２クランプ本体５の枢着穴３３を挿通する。第２連接部材２６は、ロッド２５１の一端に当接する。第１弾性部材２４は、ロッド２５１に嵌め設けられている。特に、本実施形態では、第１連接部材２５と第２連接部材２６とは、複数の規制歯部２２がそれぞれ設けられている。本実施形態に係る弾性付き押付部材２３と収容穴２８との数量は二つある。二つの弾性付き押付部材２３と二つの収容穴２８とは、第１連接部材２５に設けられている。もちろん、規制歯部２２、弾性付き押付部材２３及び収容穴２８の数量は、上記の数量以外でもよく、本発明はこれに限定されない。 The pivot pin 2 preferably includes a first connecting member 25 and a second connecting member 26. The first connecting member 25 is provided with a rod 251 that is connected to the first connecting member 25. The rod 251 inserts the pivot hole 33 of the second clamp body 5. The second connecting member 26 comes into contact with one end of the rod 251. The first elastic member 24 is fitted and provided on the rod 251. In particular, in the present embodiment, the first connecting member 25 and the second connecting member 26 are each provided with a plurality of regulating tooth portions 22. There are two quantities of the elastic pressing member 23 and the accommodating hole 28 according to the present embodiment. The two elastic pressing members 23 and the two accommodating holes 28 are provided in the first connecting member 25. Of course, the quantity of the regulating tooth portion 22, the elastic pressing member 23, and the accommodating hole 28 may be other than the above quantity, and the present invention is not limited thereto.

一方、第１連接部材２５の前記第２連接部材から離れた一端に径方向に突出する第１ヘッド部２５２が設けられており、第２連接部材２６の前記第１連接部材から離れた一端に径方向に突出する第２ヘッド部２６１が設けられている。第１ヘッド部２５２と第２ヘッド部２６１との径方向の寸法は、歯付きガイド溝１４の幅より大きい。これにより、第１連接部材２５と第２連接部材２６とは、二つの側板１３１から離脱不能となる。 On the other hand, a first head portion 252 protruding in the radial direction is provided at one end of the first connecting member 25 away from the second connecting member, and at one end of the second connecting member 26 away from the first connecting member. A second head portion 261 protruding in the radial direction is provided. The radial dimension of the first head portion 252 and the second head portion 261 is larger than the width of the toothed guide groove 14. As a result, the first connecting member 25 and the second connecting member 26 cannot be separated from the two side plates 131.

ロッド２５１の第１ヘッド部２５２から遠く離れた一端には、更に、直径がより小さい凸部２５３が設けられていることが好ましい。凸部２５３は、第２連接部材２６の穿孔２６２に差し込む。ロック部材２７は、穿孔２６２の第１連接部材２５から遠く離れた側から、凸部２５３と螺合する。ロック部材２７の最大の径方向の寸法は、穿孔２６２の径方向の寸法より大きい。これにより、第１連接部材２５と第２連接部材２６とは、容易に互いに固定することができ、互いに離脱することはない。ロッド２５１の径方向の両側には、係合凹み２５４がそれぞれ設けられている。
第２連接部材２６の第１連接部材２５に向く一側に窪み２６３が設けられている。ロッド２５１は窪み２６３に差し込む。窪み２６３は穿孔２６２と連通する。窪み２６３の内周壁に係合突起２６４が二つ設けられている。二つの係合突起２６４は、二つの係合凹み２５４とそれぞれ係合することにより、第１連接部材２５と第２連接部材２６とが互いに回動することを防止することができる。 It is preferable that a convex portion 253 having a smaller diameter is further provided at one end of the rod 251 far away from the first head portion 252. The convex portion 253 is inserted into the perforation 262 of the second connecting member 26. The lock member 27 is screwed to the convex portion 253 from a side far away from the first connecting member 25 of the perforation 262. The maximum radial dimension of the lock member 27 is greater than the radial dimension of the perforation 262. As a result, the first connecting member 25 and the second connecting member 26 can be easily fixed to each other and do not separate from each other. Engagement recesses 254 are provided on both sides of the rod 251 in the radial direction.
A recess 263 is provided on one side of the second connecting member 26 facing the first connecting member 25. The rod 251 is inserted into the recess 263. The recess 263 communicates with the perforation 262. Two engaging protrusions 264 are provided on the inner peripheral wall of the recess 263. By engaging the two engaging protrusions 264 with the two engaging recesses 254, respectively, it is possible to prevent the first connecting member 25 and the second connecting member 26 from rotating with each other.

特に、本実施形態に係る各規制歯部２２は、前記軸方向に沿う一側に斜面段２２１が設けられている。枢着ピン２が前記リリース位置に移動すると、規制歯部２２の斜面段２２１は、それに対応する歯付きガイド溝１４に向く。詳細には、枢着ピン２が前記リリース位置から前記ロック位置に移動しようとするときに、規制歯部２２が歯付きガイド溝１４に精確に位置合わせず、互いに噛み合うことができない場合には、図５から図７に示すように、各規制歯部２２の斜面段２２１が、それに対応する歯付きガイド溝１４に向くため、斜面段２２１が先に歯付きガイド溝１４に滑り込むことにより、規制歯部２２は、歯付きガイド溝１４と容易に噛み合うことができ、枢着ピン２は、前記ロック位置に容易に位置合わせることができる。このため、二つの規制歯部２２の斜面段２２１により、枢着ピン２は、前記リリース位置から前記ロック位置に容易に移動することができ、使用性が良い。 In particular, each of the regulated tooth portions 22 according to the present embodiment is provided with a slope step 221 on one side along the axial direction. When the pivot pin 2 moves to the release position, the slope step 221 of the restricting tooth portion 22 faces the corresponding toothed guide groove 14. Specifically, when the pivot pin 2 tries to move from the release position to the lock position, the restricting tooth portion 22 does not accurately align with the toothed guide groove 14 and cannot mesh with each other. As shown in FIGS. 5 to 7, since the slope step 221 of each regulated tooth portion 22 faces the corresponding toothed guide groove 14, the slope step 221 slides into the toothed guide groove 14 first to regulate. The tooth portion 22 can be easily meshed with the toothed guide groove 14, and the pivot pin 2 can be easily aligned with the lock position. Therefore, the pivot pin 2 can be easily moved from the release position to the lock position by the slope step 221 of the two restricting tooth portions 22, and the usability is good.

本実施形態に係る規制歯部２２とそれに対応する弾性付き押付部材２３との間の前記軸方向に沿う最小距離を第１長さＬ１とし、歯付きガイド溝１４の前記軸方向に沿う厚さを第２長さＬ２とする場合には、図５に示すように、第２長さＬ２は第１長さＬ１より大きいことが好ましい。これにより、規制歯部２２が歯付きガイド溝１４から離脱していないときに、弾性付き押付部材２３は歯付きガイド溝１４内に進入する。このため、枢着ピン２の前記ロック位置または前記リリース位置への切替えは円滑となる。
本実施形態に係る第１連接部材２５の底縁と、それに対向する歯付きガイド溝１４の外縁との間の前記軸方向に沿う距離を第３長さＬ３とする場合に、図５及び図５Ａに示すように、第３長さＬ３は第２長さＬ２より大きい。これにより、図７に示すように、枢着ピン２は前記リリース位置に完全に移動することを確保することができる。 The minimum distance along the axial direction between the regulated tooth portion 22 according to the present embodiment and the corresponding elastic pressing member 23 is defined as the first length L1, and the thickness of the toothed guide groove 14 along the axial direction. When is set to the second length L2, it is preferable that the second length L2 is larger than the first length L1 as shown in FIG. As a result, the elastic pressing member 23 enters the toothed guide groove 14 when the restricted tooth portion 22 is not separated from the toothed guide groove 14. Therefore, switching of the pivot pin 2 to the lock position or the release position becomes smooth.
5 and FIGS. 5 and 3 when the distance along the axial direction between the bottom edge of the first connecting member 25 according to the present embodiment and the outer edge of the toothed guide groove 14 facing the bottom edge thereof is the third length L3. As shown in 5A, the third length L3 is larger than the second length L2. This makes it possible to ensure that the pivot pin 2 is completely displaced to the release position, as shown in FIG.

図１２及び図１３を参照する。本発明の別の実施形態では、第１クランプ本体１Ａの身部１３Ａに、二つの側板１３１が設けられておらず、歯付きガイド溝１４Ａだけが設けられている。第２クランプ本体５Ａに仕切板５１が二つ設けられている。枢着穴３３Ａは二つの仕切板５１に設けられている。第１クランプ本体１Ａは、二つの仕切板５１の間に差し込む。枢着ピン２Ａは、二つの仕切板５１の枢着穴３３Ａを挿通する。これにより、本実施形態の構造はより簡素であるが、第２クランプ本体５Ａと第１クランプ本体１Ａとの相対位置を迅速に調整することができ、枢着ピン２Ａの前記ロック位置または前記リリース位置への切替を迅速を行うことができ、作業効率を有効に向上することができる。その他の構造は、上記の実施形態と同じなため、説明を省略した。 See FIGS. 12 and 13. In another embodiment of the present invention, the body portion 13A of the first clamp main body 1A is not provided with the two side plates 131, but is provided with only the toothed guide groove 14A. Two partition plates 51 are provided on the second clamp body 5A. The pivot hole 33A is provided in the two partition plates 51. The first clamp body 1A is inserted between the two partition plates 51. The pivot pin 2A inserts the pivot holes 33A of the two partition plates 51. Thereby, although the structure of the present embodiment is simpler, the relative position between the second clamp body 5A and the first clamp body 1A can be quickly adjusted, and the lock position or the release of the pivot pin 2A can be adjusted. Switching to the position can be performed quickly, and work efficiency can be effectively improved. Since other structures are the same as those in the above embodiment, the description thereof is omitted.

本発明に係るパイプレンチによれば、枢着ピンを前記ロック位置に位置合わせようとするときに、弾性付き押付部材が、弾性的に移動して歯付きガイド溝の歯同士の隙間と係合することができ、これにより、枢着ピンを円滑に位置合わせることができ、規制歯部と歯付きガイド溝とは、迅速で容易に位置合わせして互いに噛み合うことができる。このため、規制歯部と歯付きガイド溝とは、前記軸方向に沿って両方の歯面が互いに係合することにより、枢着ピンが前記ロック位置に位置合わせることができないことを防止することが可能である。
本発明によれば、歯付きガイド溝と規制歯部とは容易に噛み合うことができるため、前記ロック位置または前記リリース位置に枢着ピンを迅速に切り替えることができ、作業効率を有効に向上することができる。 According to the pipe wrench according to the present invention, when the pivot pin is to be aligned with the lock position, the elastic pressing member elastically moves and engages with the gap between the teeth of the toothed guide groove. This allows the pivot pin to be smoothly aligned and the toothed tooth portion and the toothed guide groove to be quickly and easily aligned and mesh with each other. Therefore, the restricted tooth portion and the toothed guide groove prevent the pivot pin from being unable to be aligned with the lock position due to the engagement of both tooth surfaces with each other along the axial direction. Is possible.
According to the present invention, since the toothed guide groove and the restricting tooth portion can be easily meshed with each other, the pivot pin can be quickly switched to the lock position or the release position, and the work efficiency is effectively improved. be able to.

上記では、種々の実施の形態および変形例を説明したが、本発明はこれらの内容に限定されるものではない。本発明の技術的思想の範囲内で考えられるその他の態様も本発明の範囲内に含まれる。 Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other aspects considered within the scope of the technical idea of the present invention are also included within the scope of the present invention.

１、１Ａ第１クランプ本体
１１第１ハンドル部
１２第１挟み部
１３，１３Ａ身部
１３１側板
１４、１４Ａ歯付きガイド溝
１５収容空間
１６スライド溝
２、２Ａ枢着ピン
２２規制歯部
２２１斜面段
２３弾性付き押付部材
２３１係合部材
２３２第２弾性部材
２４第１弾性部材
２５第１連接部材
２５１ロッド
２５２第１ヘッド部
２５３凸部
２５４係合凹み
２６第２連接部材
２６１第２ヘッド部
２６２穿孔
２６３窪み
２６４係合突起
２７ロック部材
２８収容穴
３駆動ハンドル
３１第２ハンドル部
３２突起
３３、３３Ａ枢着穴
４挟み部材
４１第２挟み部
４２スライドブロック
４３凹部
５、５Ａ第２クランプ本体
５１仕切板
Ｂ１第１歯部
Ｂ２第２歯部
Ｂ３枢着ピン
Ｌ１第１長さ
Ｌ２第２長さ
Ｌ３第３長さ 1, 1A 1st clamp body 11 1st handle 12 1st pinch 13, 13A Body 131 Side plate 14, 14A Toothed guide groove 15 Storage space 16 Slide groove 2, 2A Tooth pin 22 Restricted tooth 221 Slope step 23 Elastic pressing member 231 Engagement member 232 Second elastic member 24 First elastic member 25 First articulated member 251 Rod 252 First head portion 253 Convex portion 254 Engagement recess 26 Second articulated member 261 Second head portion 262 Perforation 263 Recess 264 Engagement protrusion 27 Lock member 28 Storage hole 3 Drive handle 31 Second handle part 32 Protrusion 33, 33A Pivot hole 4 Holding member 41 Second pinching part 42 Slide block 43 Recess 5, 5A Second clamp body 51 Partition Plate B1 1st tooth B2 2nd tooth B3 pivot pin L1 1st length L2 2nd length L3 3rd length

Claims

The body portion includes a first handle portion, a first sandwiching portion, and a body portion connected between the first handle portion and the first sandwiching portion, and the body portion has at least one toothed guide groove. The first clamp body provided and
The toothed guide groove is slidable so that the position can be regulated, and can be slid between the lock position and the release position along the axial direction, and has at least one regulated tooth portion and at least one. An elastic pressing member is provided, and each elastic pressing member includes a pivot pin corresponding to the regulation tooth portion along the axial direction.
A second handle portion, a pivot hole, and a second sandwiching portion are provided, and the pivot pin inserts the pivot hole and slides or turns with respect to the first clamp main body. The first clamp portion is a pipe wrench including a second clamp body that moves with respect to the second clamp portion.
When the pivot pin is located at the locked position, the restricting tooth portion meshes with the toothed guide groove, and the elastic pressing member does not engage with the toothed guide groove.
When the pivot pin moves to the release position, the restricting tooth portion is detached from the toothed guide groove, and the elastic pressing member is detachably engaged with the gap between the teeth of the toothed guide groove. Features,
Pipe wrench.

The elastic pressing member includes an engaging member and a second elastic member, and the pivot pin is provided with at least one accommodating hole, and the engaging member and the second elastic of the elastic pressing member are provided. The pipe wrench according to claim 1, wherein the member is accommodated in the accommodating hole.

The engaging member is urged to the outside of the accommodating hole by the second elastic member, the engaging member is a ball, and the hole diameter of the accommodating hole is slightly larger than the diameter of the ball, and by caulking. The pipe wrench according to claim 2, wherein the ball does not fall off from the surface of the accommodating hole.

The pivoting pin includes a first connecting member and a second connecting member, and a rod is connected to the first connecting member, and the rod inserts a pivoting hole of the second clamp body. The pipe wrench according to claim 1, wherein the second connecting member is in contact with one end of the rod, and the first elastic member is fitted and provided on the rod.

A first head portion that protrudes radially is provided at one end of the first connecting member away from the second connecting member, and radially at one end of the second connecting member away from the first connecting member. The pipe wrench according to claim 4, wherein a protruding second head portion is provided, and the diameter of the first head portion and the second head portion is larger than the width of the toothed guide groove. ..

A convex portion having a diameter smaller than that of the rod is provided at one end of the rod away from the first head portion, the convex portion is inserted into a perforation of the second connecting member, and the lock member is the lock member. It is screwed onto the convex portion from one side of the drilling away from the first articulating member, and the maximum radial dimension of the locking member is larger than the radial dimension of the drilling and the diameter of the rod. Engagement recesses are provided on both sides in the direction, and recesses are provided on one side of the second connecting member facing the first connecting member, and the rod is inserted into the recess. The recess communicates with the perforation, and two engaging protrusions are provided on the inner peripheral wall of the recess, and the two engaging protrusions are respectively engaged with the two engaging recesses. , The pipe wrench according to claim 5.

A slope step is provided on one side of each of the regulated teeth along the axial direction, and when the pivot pin moves to the release position, the slope step of the regulated tooth has the corresponding tooth. The pipe wrench according to any one of claims 1 to 6, characterized in that it faces a guide groove.

When the minimum distance between the regulated tooth portion and the corresponding elastic pressing member along the axial direction is defined as the first length, and the thickness of the toothed guide groove along the axial direction is defined as the second length. The pipe wrench according to any one of claims 1 to 6, wherein the second length is larger than the first length.

When the distance along the axial direction between the bottom edge of the first connecting member and the outer edge of the toothed guide groove facing the bottom edge is the third length, the third length is the second length. The pipe wrench according to claim 8, wherein any one of claims 4 to 6 is cited.

The second clamp main body is provided with two partition plates, the pivot hole is provided in the two partition plates, and the first clamp main body is provided between the two partition plates. The pipe wrench according to claim 1, wherein the pivot pin is inserted through a pivot hole of the two partition plates.

The body portion is provided with two side plates facing each other, the two side plates are each provided with the toothed guide groove, a storage space is formed between the two side plates, and the two side plates face each other. The two slide grooves are provided on the side surfaces thereof, respectively, and the two slide grooves are parallel to the two toothed guide grooves but do not overlap each other, and the second clamp main body has a drive handle, a sandwiching member, and the like. The drive handle and the first clamp main body are pivotally attached to the pivot pin, and the drive handle is provided with the second handle portion at one end and a protrusion at the other end. The drive handle is provided with the pivot hole, the pivot pin inserts the pivot hole, and the sandwiching member is connected to the second sandwiching portion and the slide block. , The slide block slides through the two slide grooves, the sandwiching member is provided with a recess, the protrusion abuts in the recess, and the drive handle with respect to the first clamp body. The pipe wrench according to claim 1, wherein the protrusion can control the sliding of the sandwiching member with respect to the first clamp body by sliding or turning.

The pivot pin is further provided with a first elastic member, and the first elastic member is provided between the drive handle and the pivot pin and is elastically pressed against both of them. 11. The pipe wrench according to claim 11, wherein the pivot pin is urged to the locked position.

The pipe wrench according to claim 1, wherein the center of the elastic pressing member is the same as the center of any of the teeth of the regulated tooth portion.