Search

RU-2861731-C2 - PLIERS

RU2861731C2RU 2861731 C2RU2861731 C2RU 2861731C2RU-2861731-C2

Abstract

FIELD: mechanical devices. SUBSTANCE: invention relates to pliers with an adjustable pivot axis. The pliers (1) have two pliers levers (3, 4) crossing at a pivot pin (2) having a pivot pin axis (x), one of which (4) is considered movable and the other (3) fixed, wherein on one side of the pivot pin (2) handle portions (8, 9) are formed, and on the other side of the pivot pin (2) jaw portions (5, 6) interacting in the form of a pliers mouth (7), the movable pliers lever (4) having a longitudinal slot (13) provided with a tooth system (16), and a pivot pin (2) located in a seat (12), capable of disengaging from toothed contact with said tooth system (16) by pressing the pivot pin (2) to adjust the mouth opening width (w), and the movable pliers lever (4) penetrates the fixed pliers lever (3), wherein the longitudinal slot (13) has an extension (S) which, when the pliers (1) are closed, extends transversely to the orientation of the pliers levers (3 and 4) on the handle side. The movable pliers lever (4) has an overlap region (U) in which the movable pliers lever (4) is overlapped on both sides by the fixed pliers lever (3), the overlap region (U) extending at right angles to the direction (r) of adjustment of the pivot pin (2) in the longitudinal slot (13), having a width (g) which corresponds to 0.5 times or more the maximum adjustment dimension (f), and having a length (d) which corresponds to 2 times or more the maximum adjustment dimension (f). EFFECT: functionally reliable design of the pliers with ergonomically convenient handling. 7 cl, 26 dwg

Inventors

  • Mosler, Mario
  • LIEDTKE, Kevin
  • HOLZ, CHRISTIAN

Dates

Publication Date
20260508
Application Date
20220405
Priority Date
20210407

Claims (7)

  1. 1. Pliers (1) having two levers (3, 4) of the pliers intersecting in a hinge pin (2) having an axis (x) of the hinge pin, one of which (4) should be considered movable and the other (3) fixed, wherein on one side of the hinge pin (2) there are sections (8, 9) of the handles, and on the other side of the hinge pin (2) there are jaws (5, 6) of the jaws interacting in the form of a mouth (7) of the pliers, wherein the movable lever (4) of the pliers has a longitudinal slot (13) provided with a system (16) of teeth, and a hinge pin (2) located in a socket (12), having the ability to come out of toothed contact with the said system (16) of teeth by pressing on the hinge pin (2) to rearrange the width (w) of the opening of the mouth, and the movable lever (4) of the pliers pierces the fixed lever (3) of the pliers, wherein the longitudinal slot (13) has length (S), which, for closed pliers (1), extends in the transverse direction to the orientation of the levers (3 and 4) of the pliers on the side of the handles, characterized in that the movable lever (4) of the pliers has an overlapping region (U), in which the movable lever (4) of the pliers is overlapped on both sides by the fixed lever (3) of the pliers, wherein the overlapping region (U) extends at a right angle to the direction (r) of rearrangement of the hinge pin (2) in the longitudinal slot (13), having a width (g), which corresponds to 0.5 times or more of the maximum dimension (f) of rearrangement, and having a length (d), which corresponds to 2 times or more of the maximum dimension (f) of rearrangement.
  2. 2. Pliers according to paragraph 1, characterized in that when shifting from a smaller to a larger width (w) of the opening of the jaws in relation to the sections (21, 22) of the levers of the pliers on the side of the handles, in each case a larger overlapping area is initially obtained.
  3. 3. Pliers according to paragraph 1 or 2, characterized in that the width (h) of the pliers in the area of overlapping, starting from the closed pliers (1), when moving to a larger width (w) of opening of the mouth, is initially reduced.
  4. 4. Pliers according to any one of paragraphs 1-3, characterized in that the fixed lever (3) of the pliers has a pit (39) designed for action by pressing on the hinge pin (2), wherein the axis (x) of the hinge pin is located eccentrically to the geometric mean axis (y) of the pit.
  5. 5. Pliers according to item 4, characterized in that the axis (x) of the hinge pin is shifted in the direction (r) of the rearrangement of the jaws (7) of the pliers relative to the middle axis (y) of the hole.
  6. 6. Pliers according to any of paragraphs 1-5, characterized in that the jaws (5, 6) of the mouth have working surfaces (23, 24) that are equipped with a system (25, 26) of teeth.
  7. 7. Pliers according to item 6, characterized in that the working surfaces (23, 24), in relation to the longitudinal length (L) of the mouth (7) of the pliers, deepen towards the top (34) of the pliers, so that when the pliers (1) are closed, an opening (37) remains in front of the mouth (7) of the pliers.

Description

The invention concerns pliers having two pliers levers intersecting in a hinge pin having an axis of the hinge pin, one of which should be considered movable and the other fixed, wherein on one side of the hinge pin there are handle sections, and on the other side of the hinge pin there are jaws of the jaw interacting in the form of a jaw of the pliers, wherein the movable lever of the pliers also has a longitudinal slot provided with a system of teeth, and the hinge pin located in the socket can move from the toothed contact, and the movable lever of the pliers pierces the fixed lever of the pliers, wherein the longitudinal slot also has an extension which, in closed pliers, extends in the transverse direction to the orientation of the levers of the pliers from the side of the handles. The invention also concerns pliers having two pliers levers rotating around the axis of rotation and a pliers jaw formed from two jaws of the jaws, wherein this pliers jaw has opposing working surfaces, a first working surface and a second working surface, which over a substantial part of their length, when viewed from the free end of the jaws of the jaws to the axis of rotation, are provided with a system of teeth, wherein the sharply ending teeth have the tops of the teeth oriented in the direction of the axis of rotation, and the other sharply ending teeth have the tops of the teeth oriented toward the free end of the jaws of the jaws. The invention also concerns pliers having two pliers levers rotating around the axis of rotation and a pliers mouth, wherein this pliers mouth has working surfaces that are provided with a system of teeth, and the sharply ending teeth, in relation to the passage of the tops of the teeth in the working surface, have an orientation in the direction of the axis of rotation, while each tooth also has a bisector, and these bisectors extend, starting from the top of the tooth and facing from the pliers mouth to the free end of the jaws of the mouth or to the end of the pliers mouth facing the hinge. In addition, the invention concerns pliers having two levers of the pliers rotatable around the axis of rotation and a jaw of the pliers, wherein this jaw of the pliers has working surfaces that are provided with a system of teeth, and the sharply ending teeth, in relation to the passage of the tops of the teeth in the working surface, have an orientation in the direction of the axis of rotation, wherein also in the view in which the axis of rotation is displayed as a point, a penetration plane extends through the jaw of the pliers, which in this view is displayed as a line, wherein this penetration plane is obtained due to the fact that, when the jaw of the pliers is adjusted to the maximum closed position, it passes at a right angle to the longitudinal center line of the longitudinal slot for placing the adjustable hinge pin or passes so that the axis of rotation extends in the plane of penetration, wherein either, in the case of a longitudinal slot, the point of intersection of the longitudinal center plane with the longitudinal center line is chosen so, or, with the axis of rotation extending in the plane of penetration, the orientation of the penetration plane is chosen so that during the closing of the jaw of the pliers at a certain angle opening, related to the free end of the jaws of the mouth, simultaneously for the first time the contact of the opposite working surfaces is achieved, and, in addition to this, the tops of the teeth end at a different perpendicular distance from the plane of penetration, and the teeth also have a bisector, which makes an acute angle with the plane of penetration, while on some of the teeth this acute angle in the area in which the bisector extends in the area of the jaws of the pliers, is obtained between the perpendicular and the axis of rotation, and in another part of the teeth between the perpendicular and the free end of the jaws of the pliers. The invention also concerns pliers having two pliers levers that rotate around the axis of rotation and a pliers mouth, wherein this pliers mouth has working surfaces that are provided with a system of teeth, and the sharply ending teeth are oriented in the direction of the axis of rotation, wherein a broken line can be drawn through the tops of the teeth, wherein individual sections of this broken line also form an angle with each other, and in the open position of the pliers mouth the broken lines are opposite each other. State of the art The pliers in question are known, for example, from US 5,996,450 A or US 5,752,419 A. The pliers known from US 5,752,419 A have the ability to adjust the opening width, in particular in the closed position of the jaws of the pliers, for which purpose the hinge pin is first moved from the toothed contact to the position of the largest possible opening by rotating the levers of the pliers, and then the movable lever of the pliers is shifted, preferably together with the hinge pin,