EP3689546B1 - Clé de tuyau - Google Patents

Clé de tuyau Download PDF

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Publication number
EP3689546B1
EP3689546B1 EP19154937.7A EP19154937A EP3689546B1 EP 3689546 B1 EP3689546 B1 EP 3689546B1 EP 19154937 A EP19154937 A EP 19154937A EP 3689546 B1 EP3689546 B1 EP 3689546B1
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EP
European Patent Office
Prior art keywords
pivot
hole
pipe wrench
guide
toothed
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.)
Active
Application number
EP19154937.7A
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German (de)
English (en)
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EP3689546A1 (fr
Inventor
Arthur Wu
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.)
Proxene Tools Co Ltd
Original Assignee
Proxene Tools 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 Proxene Tools Co Ltd filed Critical Proxene Tools Co Ltd
Priority to EP19154937.7A priority Critical patent/EP3689546B1/fr
Publication of EP3689546A1 publication Critical patent/EP3689546A1/fr
Application granted granted Critical
Publication of EP3689546B1 publication Critical patent/EP3689546B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/20—Arrangements for locking the jaws
    • B25B13/22—Arrangements for locking the jaws by ratchet action or toothed bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
    • B25B13/5008—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects
    • B25B13/5016—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe
    • B25B13/5025—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe using a pipe wrench type tool
    • B25B13/5041—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe using a pipe wrench type tool with movable or adjustable jaws
    • B25B13/5058—Linearly moving or adjustable, e.g. with an additional small tilting or rocking movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/06—Joints
    • B25B7/10—Joints with adjustable fulcrum

Definitions

  • the present invention relates to a pipe wrench.
  • a pipe wrench includes a first lever member and a second lever member pivoted to each other, the first lever member has a slide slot, within the slide slot is a pivot, the second lever member is pivoted to the pivot to make the second lever member slide and swing relative to the first lever member.
  • a first toothed portion of the first lever member is meshed with a second toothed portion of the pivot, through pressing the pivot to make the first toothed portion detach from the second toothed portion, the pivot and the second lever member can slide relative to the first lever member so as to adjust a relative distance between a first clamping portion of the first lever member which is fixed and a second clamping portion of the second lever member which is movable, and after adjustment, the second lever member is swingable to make the second clamping portion which is movable swing toward the first clamping portion which is fixed to clamp a rectangular or hexagonal joint of a pipe.
  • Such pipe wrench is disclosed in CN204843895 .
  • an elastic mechanism is provided at a bottom of the pivot and elastically biases the pivot to make sure that the second toothed portion of the pivot and the first toothed portion of the jaw are meshed with each other, as disclosed in CN106103000 , US2557296 , US4269089 and US2017/0066112 .
  • the conventional pipe wrenches still have some disadvantages.
  • the first toothed portion and the second toothed portion are meshed with each other to lock each other in position, when the pivot is pressed along an axial direction of the pivot, the first and second toothed portions can easily be detached from each other, and the pivot and the second lever member can slide relative to the first lever member; however, when the pivot is released, as shown in Fig.
  • the first toothed portion B1 and the second toothed portion B2 move relatively horizontally, and due to tooth space and tooth type, an addendum of the first toothed portion and a dedendum of the second toothed portion cannot smoothly engaged with each other along the axial direction of the pivot B3, and the second toothed portion of the pivot cannot be smoothly meshed with the first toothed portion to position the pivot on a locked position. Therefore, the pivot and the second lever member still slide relative to the first lever member, a user needs to manually adjust relative positions of the pivot and the second lever member so that the pivot and the first lever member can be accurately meshed and positioned.
  • the present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
  • the major object of the present invention is to provide a pipe wrench, when a pivot is released, a guide toothed groove of a first lever member and a position-restricting toothed portion of the pivot can be easily locked, so the pivot can freely and quickly aligned to make the guide toothed groove and the position-restricting toothed portion easily meshed with each other, and the pivot can be quickly switched between a locked position or a released position to effectively elevate operation efficiency.
  • a pipe wrench including a first lever member, a pivot and a second lever member.
  • the first lever member includes a first grip portion, a first clamping portion and a body portion which is connected to and between the first grip portion and the first clamping portion, and the body portion has at least one guide toothed groove.
  • the pivot is positionably and slidably disposed within the at least one guide toothed groove, the pivot is slidable along an axial direction to be on a locked position or a released position, the pivot has at least one position-restricting toothed portion and at least one elastic mechanism, and each of the at least one elastic mechanism corresponds to one of the at least one position-restricting toothed portion in the axial direction.
  • the second lever member includes a second grip portion, a pivot hole and a second clamping portion, the pivot is disposed through and pivoted to the pivot hole, and through the second lever member sliding or swinging relative to the first lever member, the first clamping portion is slidable relative to the second clamping portion.
  • a pipe wrench includes a first lever member 1, a pivot 2 and a second lever member 5.
  • the first lever member 1 includes a first grip portion 11, a first clamping portion 12 and a body portion 13 which is connected to and between the first grip portion 11 and the first clamping portion 12, and the body portion 13 has at least one guide toothed groove 14.
  • the pivot 2 is positionably and slidably disposed within the at least one guide toothed groove 14, the pivot 2 is slidable along an axial direction to be on a locked position or a released position, the pivot 2 has at least one position-restricting toothed portion 22 and at least one elastic mechanism 23, and each of the at least one elastic mechanism 23 corresponds to one of the at least one position-restricting toothed portion 22 along the axial direction.
  • the second lever member 5 includes a second grip portion 31, a pivot hole 33 and a second clamping portion 41, the pivot 2 is disposed through and pivoted to the pivot hole 33, and through the second lever member 5 sliding or swinging relative to the first lever member 1, the first clamping portion 12 is slidable relative to the second clamping portion 41.
  • the elastic mechanism 23 enters the gap between the guide toothed groove 14; when the pivot 2 is pressed to be on the released position completely, the position-restricting toothed portion 22 and the guide toothed groove 14 are detached from each other, the pivot 2 can be moved relatively horizontally along the guide toothed groove 14 to adjust an opening of the pipe wrench, at this moment, the elastic mechanism 23 is repeatedly pressed and reposition and can be engaged between the gap of the guide toothed groove 14 any time; when the pivot 2 is released, being guided by the elastic mechanism 23, the position-restricting toothed portion 22 and the guide toothed groove 14 can be easily meshed with each other and repositioned and locked on any position, at this moment, the pivot 2 is slidable to be on any position of the guide toothed groove 14, the bouncing 23 is freely compressed by a part of the guide toothed groove 14 near an addendum, the elastic mechanism 23 also freely repositions from near a part of the guide
  • the pivot 2 and the second lever member 5 can slide along an extension direction of the guide toothed groove 14 (as shown in Figs. 10 and 11 ) to quickly adjust relative positions of the second lever member 5 and the first lever member 1.
  • each of the elastic mechanism 23 and one of teeth of the position-restricting toothed portion 22 have a common central line widthwise across the guide toothed groove 14, and the position-restricting toothed portion 22 and the guide toothed groove 14 can easily aligned and meshed with each other and locked.
  • the position-restricting toothed portion 22 and the guide toothed groove 14 can be quickly and easily aligned and meshed with each other, so that the disadvantage of the prior art that engagements of addendum flanks of the position-restricting toothed portion 22 and the guide toothed groove 14 along the axial direction makes the pivot 2 incapable of being positioned to the locked position can be prevented.
  • the position-restricting toothed portion 22 and the guide toothed groove 14 can be smoothly and easily meshed with each other, and the pivot 2 can be quickly switched between the locked position and the released position to effectively elevate the operation efficiency.
  • the body portion 13 includes two side plates 131 which correspond to each other and respectively have one of the at least one guide toothed groove 14, the two side plates 131 have a receiving groove 15 therebetween, one of two sides of each of the two side plates 131 has a slide slot 16, the two slide slots 16 and the two guide toothed grooves 14 are parallel to each other and non-overlapping,
  • the second lever member 5 includes a driving grip 3 and a clamping member 4, the driving grip 3 and the first lever member 1 are pivoted to the pivot 2, one of two ends of the driving grip 3 has the second grip portion 31, the other of the two ends of the driving grip 3 has a cam 32, the driving grip 3 has the pivot hole 33,
  • the clamping member 4 includes the second clamping member 41 and a slidable block 42 which are connected to each other, the slidable block 42 is slidable within the two slide slots 16, the clamping member 4 has a recessed portion 43, the cam 32 is abuttably inserted within the recessed portion 43, and through the driving grip
  • the slidable block 42 of the clamping member 4 is rectangular columnar
  • the two slide slots 16 are n-shaped slots to be complementary to the slidable block 42
  • the recessed portion 43 is recessed on the slidable block 42
  • the slidable block 42 and the two slide slots 16 can be in other shapes (for example, cylindrical and arc groove).
  • the pivot 2 further has a first elastic member 24, the first elastic member 24 biases between the driving grip 3 and the pivot 2 to move the pivot 2 normally toward the locked position so that when the pivot 2 is not influenced by a force, the pivot 2 automatically aligns to the locked positon.
  • each of at least one of the elastic mechanism 23 includes an engaging member 231 and a second elastic member 232
  • the pivot 2 has at least one receiving hole 28, the engaging member 231 and the second elastic member 232 of each of the at least one elastic mechanism 23 are received within one of the at least receiving hole 28, and the second elastic member 232 normally biases the engaging member 231 toward an outside of the receiving hole 28.
  • the engaging member 231 is a ball which can easily trip from the guide toothed groove 14, a hole diameter of the receiving hole 28 is slightly greater than a diametric dimension of the ball, and a surface of the receiving hole 28 is riveted so as to prevent the ball from falling off.
  • the pivot 2 includes a first connecting member 25 and a second connecting member 26, the first connecting member 25 has a rod member 251, the rod member 251 is disposed through the pivot hole 33 of the second lever member 5, the second connecting member 26 is abuttably connected to one of two ends of the rod member 251, and a first elastic member 24 is sleeved to the rod member 251.
  • the first and second connecting members 25, 26 respectively have a plurality of the position-restricting toothed portion 22, and in this embodiment, numbers of the at least one elastic mechanism 23 and the at least one receiving hole 28 are both two, the two elastic mechanisms 23 and the two receiving holes 28 are disposed on the first connecting member 23, and in other embodiments, the position-restricting toothed portion 22 and the receiving holes 28 may be arranged in other ways, not limited hereto.
  • one of two ends of the rod member 251 which is remote from the first head portion 252 further has a protrusive portion 253 which has a smaller diameter
  • the protrusive portion 253 is inserted into a through hole 262 of the second connecting member 26
  • a fixing member 27 is screwed with the protrusive portion 253 from a side of the through hole 262 which is remote from the first connecting member 25, a greatest diametric dimension of the fixing member 27 is greater than a diametric dimension of the through hole 262 so that the first and second connecting members 25, 26 can easily fixed with each other
  • two radial sides of the rod member 251 each have an engaging recess 254, a side of the second connecting member 26 facing the first connecting member 25 has a hole 263, the rod member 251 is inserted into the hole 263, the hole 263 communicates with the through hole 262, an internal circumferential wall of the hole 263 has two engaging protrusions 264, and each of the two engaging protrusions 264 is engaged with one of the two engaging
  • a respective side of each of the at least one position-restricting toothed portion in the axial direction has a slant face section 221, and when the pivot 2 moves to the released position, the slant face section 221 of the position-restricting toothed portion 22 faces the guide toothed groove 24 to which the slant face section 221 corresponds.
  • the slant face section 221 of each of the at least one position-restricting toothed portion 22 faces one of the at least one guide tooted groove 14 to which the slant face section 221 corresponds (as shown in Figs.
  • the slant face section 221 slides into the guide toothed groove 4 first so that the position-restricting toothed portion 22 can be easily meshed with the guide toothed groove 14, and the pivot 2 can easily align to the locked position; therefore, the two slant face sections 221 of the two position-restricting toothed portions 22 allow the pivot 2 to move from the released portion to the locked position more easily.
  • a shortest distance between the position-restricting toothed portion 22 and the elastic mechanism 23 to which the position-restricting toothed portion 22 corresponds defines a first length L1
  • a thickness of the guide toothed groove 14 along the axial direction defines a second length L2
  • the second length L2 is greater than the first length L1 (as shown in Fig. 5 ), so when the position-restricting toothed portion 22 has not tripped from the guide toothed groove 14, the elastic mechanism 23 enters the guide toothed groove 14, and the pivot 2 can be switched between the locked position and the released position more easily.
  • a width of a bottom edge of the first connecting member 25 and an outer edge of the guide toothed groove 14 which the first connecting member 25 faces defines a third length L3, and the third length L3 is greater than the second length L2 (as shown in Figs. 5 and 5A ) to make sure that the pivot 2 can move to the released position completely (as shown in Fig. 7 ).
  • the body portion 13A of the first lever member 1A does not have the two side plates 131 but has one of the at least one guide toothed groove 14A
  • the second lever member 5A has two partitions 51
  • the pivot hole 33A is disposed through the two partitions 51
  • the first lever member 1A is disposed between the two partitions 51
  • the pivot 2A is disposed through and pivoted to the pivot hole 33A of the two partitions 51.
  • the pivot when the pivot aligns to the locked position, the elastic mechanism is releasably engaged with the guide toothed groove, the pivot can be smoothly aligned, and the position-restricting toothed portion and the guide toothed groove can be quickly and easily aligned to and meshed with each other; therefore, the position-restricting toothed portion and the guide toothed groove can be prevented from being engaged with each other along the axial direction and from making the pivot incapable of aligning to the locked position.
  • the position-restricting toothed portion and the guide toothed groove can be easily meshed with each other, and the pivot can be quickly switched between the locked position and the released position to effectively elevate the operation efficiency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (13)

  1. Clé à tuyau, incluant :
    un premier élément de levier (1), incluant une première partie de préhension (11), une première partie de serrage (12) et une partie de corps (13) qui est reliée à et entre la première partie de préhension (11) et la première partie de serrage (12), la partie de corps (13) présentant au moins une rainure dentée de guidage (14) ;
    un pivot (2), disposé de manière positionnable et coulissante à l'intérieur de la au moins une rainure dentée de guidage (14), le pivot (2) pouvant coulisser le long d'une direction axiale pour être dans une position verrouillée ou une position libérée, le pivot (2) présentant au moins une partie dentée de restriction de position (22) et au moins un mécanisme élastique (23), chaque au moins un mécanisme élastique (23) correspondant à l'une de la au moins une partie dentée de restriction de position (22) dans la direction axiale ;
    un second élément de levier (5), incluant une seconde partie de préhension (31), un trou de pivot (33) et une seconde partie de serrage (41), le pivot (2) étant disposé à travers et pivotant par rapport au trou de pivot (33), à travers le second élément de levier (5) coulissant ou oscillant par rapport au premier élément de levier (1), la première partie de serrage (12) pouvant coulisser par rapport à la seconde partie de serrage (41) ;
    dans laquelle, lorsque le pivot (2) est dans la position verrouillée, la partie dentée de restriction de position (22) et la rainure dentée de guidage (14) engrènent l'une avec l'autre, et le mécanisme élastique (23) n'est pas en prise avec la rainure dentée de guidage (14) ; lorsque le pivot (2) se déplace vers la position libérée, la partie dentée de restriction de position (22) et la rainure dentée de guidage (14) sont détachées l'une de l'autre, et le mécanisme élastique (23) est en prise de manière libérable avec la rainure dentée de guidage (14).
  2. Clé à tuyau selon la revendication 1, dans laquelle le mécanisme élastique (23) inclut un élément de mise en prise (231) et un second élément élastique (232), le pivot (2) présente au moins un trou de réception (28), et l'élément de mise en prise (231) et le second élément élastique (232) du mécanisme élastique (23) sont reçus à l'intérieur de l'un du au moins un trou de réception (28).
  3. Clé à tuyau selon la revendication 2, dans laquelle le second élément élastique (232) sollicite normalement l'élément de mise en prise (231) vers un extérieur du trou de réception (28), l'élément de mise en prise (231) est une bille, un diamètre de trou du trou de réception (28) est légèrement supérieur à une dimension diamétrale de la bille, et une surface du trou de réception (28) est rivetée de manière à empêcher la bille de tomber.
  4. Clé à tuyau selon la revendication 1, dans laquelle le pivot (2) inclut un premier élément de connexion (25) et un second élément de connexion (26), le premier élément de connexion (25) présente un élément de tige (251), l'élément de tige (251) est disposé à travers le trou de pivot (33) du second élément de levier (5), le second élément de connexion (26) est connecté de manière à pouvoir venir en butée à l'une de deux extrémités de l'élément de tige (251), et un premier élément élastique (24) est manchonné sur l'élément de tige (251).
  5. Clé à tuyau selon la revendication 4, dans laquelle l'une de deux extrémités du premier élément de connexion (25) et l'une de deux extrémités du second élément de connexion (26) qui sont distantes l'une de l'autre ont respectivement une première partie de tête (252) et une seconde partie de tête (261) faisant saillie radialement, et des dimensions diamétrales de la première partie de tête (252) et de la seconde partie de tête (261) sont chacune supérieures à une largeur de la rainure dentée de guidage (14).
  6. Clé à tuyau selon la revendication 5, dans laquelle l'une des deux extrémités de l'élément de tige (251) qui est distante de la première partie de tête (252) présente en outre une partie saillante (253) qui présente un diamètre plus petit, la partie saillante (253) est insérée dans un trou traversant (262) du second élément de connexion (26), un élément de fixation (27) est vissé avec la partie saillante (253) à partir d'un côté du trou traversant (262) qui est éloigné du premier élément de connexion (25), une dimension diamétrale la plus grande de l'élément de fixation (27) est supérieure à une dimension diamétrale du trou traversant (262), deux côtés radiaux de l'élément de tige (251) ont chacun un évidement de mise en prise (254), un côté du second élément de connexion (26) faisant face au premier élément de connexion (25) présente un trou (263), l'élément de tige (251) est inséré dans le trou (263), le trou (263) communique avec le trou traversant (262), une paroi circonférentielle interne du trou (263) présente deux saillies de mise en prise (264), et chacune des deux saillies de mise en prise (264) est mise en prise avec l'un des deux évidements de mise en prise (254).
  7. Clé à tuyau selon la revendication 1, dans laquelle un côté respectif de chacune de la au moins une partie dentée de restriction de position (22) dans la direction axiale présente une section de face inclinée (221), et lorsque le pivot (2) se déplace vers la position libérée, la section de face inclinée (221) de la partie dentée de restriction de position (22) fait face à la rainure dentée de guidage (14) à laquelle correspond la section de face inclinée (221).
  8. Clé à tuyau selon la revendication 1, dans laquelle le long de la direction axiale, une distance la plus courte entre la partie dentée de restriction de position (22) et le mécanisme élastique (23) auquel correspond la partie dentée de restriction de position (22) définit une première longueur (L1), une épaisseur de la rainure dentée de guidage (14) le long de la direction axiale définit une deuxième longueur (L2), et la deuxième longueur (L2) est supérieure à la première longueur (L1).
  9. Clé à tuyau selon la revendication 4, dans laquelle le long de la direction axiale, une largeur d'un bord inférieur du premier élément de connexion (25) et d'un bord extérieur de la rainure dentée de guidage (14) à laquelle le premier élément de connexion (25) fait face définit une troisième longueur (L3), et la troisième longueur (L3) est supérieure à la deuxième longueur (L2).
  10. Clé à tuyau selon la revendication 1, dans laquelle le premier élément de levier (1) présente une dite rainure dentée de guidage (14), le second élément de levier (5) présente deux cloisons (51), le trou de pivot (33) est disposé à travers les deux cloisons (51), le premier élément de levier (1) est disposé entre les deux cloisons (51), et le pivot (2) est disposé à travers le et pivotant par rapport au trou de pivot (33) des deux cloisons (51).
  11. Clé à tuyau selon la revendication 1, dans laquelle la partie de corps (13) inclut deux plaques latérales (131) qui correspondent l'une à l'autre et présentent respectivement l'une de la au moins une rainure dentée de guidage (14), les deux plaques latérales (131) présentent une rainure de réception (15) entre elles, l'un de deux côtés de chacune des deux plaques latérales (131) présente une fente de coulissement (16), les deux fentes de coulissement (16) et les deux rainures dentées de guidage (14) sont parallèles les unes aux autres et ne se chevauchent pas, le second élément de levier (5) inclut une poignée d'entraînement (3) et un élément de serrage (4), la poignée d'entraînement (3) et le premier élément de levier (1) sont pivotés sur le pivot (2), l'une de deux extrémités de la poignée d'entraînement (3) présente la seconde partie de préhension (31), l'autre des deux extrémités de la poignée d'entraînement (3) présente une came (32), la poignée d'entraînement (3) présente le trou de pivot (33), le pivot (2) est disposé à travers le trou de pivot (33), l'élément de serrage (4) inclut le second élément de serrage (4) et un bloc coulissant (42) qui sont reliés l'un à l'autre, le bloc coulissant (42) peut coulisser à l'intérieur des deux fentes coulissantes (16), l'élément de serrage (4) présente une partie évidée (43), la came (32) est insérée de manière à venir en butée à l'intérieur de la partie évidée (43), et à travers la poignée d'entraînement (3) coulissant ou oscillant par rapport au premier élément de levier (1), la came (32) est capable de commander l'élément de serrage (4) pour coulisser par rapport au premier élément de levier (1).
  12. Clé à tuyau selon la revendication 11, dans laquelle le pivot (2) présente en outre un premier élément élastique (24), et le premier élément élastique (24) sollicite entre la poignée d'entrainement (3) et le pivot (2) pour faire en sorte que le pivot (2) se déplace normalement vers la position verrouillée.
  13. Clé à tuyau selon la revendication 1, dans laquelle chacun du mécanisme élastique (23) et de l'une des dents de la partie dentée de restriction de position (22) présente une ligne centrale commune dans le sens de la largeur à travers la rainure dentée de guidage (14).
EP19154937.7A 2019-01-31 2019-01-31 Clé de tuyau Active EP3689546B1 (fr)

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EP19154937.7A EP3689546B1 (fr) 2019-01-31 2019-01-31 Clé de tuyau

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EP3689546B1 true EP3689546B1 (fr) 2021-08-04

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114074303B (zh) * 2020-08-18 2023-08-22 吴明杰 开***动扳手
TWI767517B (zh) 2021-01-14 2022-06-11 亨龍工業有限公司 可調整扳手
CN114668595B (zh) * 2022-03-30 2024-01-19 黄冈师范学院 自锁机构及带有该机构的折叠椅

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US2557296A (en) 1948-02-16 1951-06-19 Williams J H & Co Pivot for adjustable fulcrum pliers
US4269089A (en) 1978-11-24 1981-05-26 Hastings Charles E Adjustable ratchet pliers
DE102014102927A1 (de) 2014-03-05 2015-09-10 Knipex-Werk C. Gustav Putsch Kg Zange
CN204843895U (zh) 2015-08-27 2015-12-09 上海美瑞实业有限公司 钳口平行移动的快调钳

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