FR2672036A1 - RETAINING CLIP, IN PARTICULAR FOR CLOSING A GARBAGE BAG OR FOR HOLDING THREADS. - Google Patents

Abstract

The invention relates to a retaining clip which can be manipulated with one hand to clamp it on a bag (7) which is to be closed, and which remains blocked, until a control device provided for this purpose. The clamp has two curved flat jaws (1, 2) connected by an articulation (axis 3) and able to cross. The joint contains a means of locking by friction or wedging, acting in a single direction of mutual pivoting of the jaws. This means can be formed by a helical spring inserted on a cylindrical core integral with one of the jaws, this spring having one end driven in rotation by the other jaw. A rotary release control button (20) is provided with a stud acting on the other end of the spring when this button (20) is rotated (C). Such a clamp can be used temporarily or permanently, to retain any objects, in particular electric wires or cables, and to close bags or sachets.

Description

RETAINING CLIP, IN PARTICULAR FOR CLOSING A BAG

ORDURES OR TO HOLD SONS

  The present invention relates to a retaining clip, in particular for closing a bag or for forming a collar around electric wires or cables, comprising two jaws arranged to be clamped

  on an object and hold it together.

  To close a flexible bag such as a garbage bag, a bag of coal, etc., it is generally used a flexible link that is attached around the upper part of this bag, above the content,

  while holding this part tight and possibly twisted.

  Therefore, the hand that holds the bag can not be used to put the link in place and to tie it. This is particularly difficult to do when the person concerned is clumsy or when the bag is very full, so particularly tense. avoid the use of a second person, there are known elastic clamps for keeping the upper part of the bag tight for

  However, these elastic clips are not satisfactory.

  the restraining force that their spring can exert on the bag is limited to a low value so that the user does not have

  hardly to spread the jaws to open the clamp.

  The present invention aims to provide a retaining clip to avoid the disadvantages mentioned above and able to maintain obejts tight between his jaws, but remaining

always easy to maneuver.

  For this purpose, the invention provides a retaining clip of the type indicated above, characterized in that: the jaws are connected by a hinge allowing any one of the jaws to pivot relative to the other, the articulation is provided with a locking means for pivoting a jaw in a direction corresponding to the clamping of the jaws, and mutually locking the jaws when urged in the tightening direction, the hinge is provided with an unlocking means to order

  manual, arranged to unlock on command the locking means.

  Preferably, the blocking means is of a blocking type

  friction or wedging under the effect of a spring.

  In a first embodiment, a first of said jaws is integral with a cylindrical periphery core, centered on the axis of the joint, and the locking means comprises a spring at least partially surrounding the cylindrical periphery of the core and provided with of two projecting ends, one of which is integral in rotation with the second jaw and the other of which cooperates with the unlocking means Preferably, the second jaw comprises a central hub surrounding the core and the spring, and provided with a notch in which is engaged said first end of the spring. The unlocking means may comprise a control button movably mounted on the second jaw and provided with an abutment surface arranged to be pressed laterally against said other end of the spring by a movement of the button. cylindrical hollow, rise of

  pivotally on the hub of the second jaw.

  In another embodiment of a gripper according to the invention, a first of said jaws is integral with a cylindrical periphery core centered on the axis of the articulation, the second jaw comprises a central hub provided with a bore axial in which the core is pivotally mounted, and the locking means comprises a cavity formed in the hub, laterally relative to said bore and having an eccentric surface facing the periphery of the core, and a locking member biased in one direction circumferential by a spring which tends to wedge between the periphery of the core and the eccentric surface The locking member may be a roller or a ball, and the unlocking means may comprise a pusher movable in translation in said hub, and provided with an oblique end surface arranged to repel

  the locking member in the opposite direction to the effect of the spring.

  Preferably, the two jaws are substantially flat and curved, each jaw having a concave inner edge opposite the other jaw, and are superposed on either side of an intermediate plane, and the hinge axis is perpendicular to

this plan.

  The first jaw and the core may be formed of a single molded piece of synthetic material, and the second jaw and the hub may also be formed of a single molded piece of material

synthetic.

  The present invention and its advantages will become more apparent in the

  following description of various embodiments, with reference

  In the accompanying drawings, in which Fig 1 is an exploded view showing all the elements of a first embodiment of a clamp according to the invention, Fig 2 is a plan view of the clamp of Fig 1 3 is a plan view of the clamp of FIG. 1 during its opening, FIG. 4 is a partial sectional view showing another embodiment of a clamp according to the invention, during its closing, and FIG 5 is a view similar to FIG 4, showing the operation

opening of the clamp.

  With reference to FIGS. 1 to 3, the clip shown comprises a first flat and curved jaw 1 and a second flat and curved jaw 2, which are articulated to one another so as to be able to pivot each other about an axis 3 The jaws 1 and 2 are in respective parallel and superimposed planes, so that they intersect by touching each other in the position illustrated in FIG. 3. Each jaw 1, 2 presents, in front of the other

  jaw, a concave inner edge 5, 6 making it possible to press

  the wall of one bag 7 at a time towards the other jaw

and axis 3.

  The first jaw 1 is part of a molded piece of synthetic material, which comprises a protruding central core 8 having a

  axial bore 9 and a cylindrical peripheral surface 10 of axis 3.

  A helical spring 11, having tight turns against each other, is inserted on the core 8 and has two ends 12 and 13 bent at right angles and directed radially at rest, the diameter of the turns of the spring 11 is slightly smaller than the diameter. of the cylindrical periphery 10 of the core, so that the

  spring is slightly tightened once placed on the core.

  The second jaw 2 is part of another molded piece of synthetic material, having a hollow cylindrical hub 14 centered on the axis 3 and arranged to surround the spring 11 and the core 8, that it can overlap the upper end of the hub 14 is closed by a transverse wall 15 having a central bore 16 surrounded by a flange 17. The cylindrical wall of the hub comprises an axial notch 18 in which is engaged the first end 12 of the spring 11, which secures in rotation the spring and the second jaw 2 This jaw is provided with an arcuate slot 19 in which the second end 13 of the spring can move

  A control knob 20 in the form of a cylindrical cap is

  upper wall, 21 having a central hole 22, is arranged to overlap the hub 14, the rim 17 of which engages in the hole 22. The lower edge of the cap 20 is provided with a driving nipple 23 which circulates in the slot 19 and a side face 24 can bear against the second end 13 of the spring 11 When the button 20 is not actuated, the stud 23 does not push the spring, because it has a certain margin of movement in the slot 19, that is to say that the button can rotate slightly on the hub

14.

  The elements 8, 14 and 20, once they are threaded onto each other, are held axially by means of an axial pin 26 having a slotted head 27 and a flat head 28, or by another

equivalent way.

  The operation of the clamp is illustrated by FIGS. 2 and 3, where the bag 7 is assumed to be viewed from the top and is represented only by its upper part which it is desired to ligate while holding this part of the bag. clasped in one hand, the gripper is grasped in the other hand, it is engaged on the bag as shown in fig 2 and, with the same hand, it is closed by pressing the jaws 1 and 2 against each other. other as indicated by the arrows A View from above, the jaw 2 tends to pivot in a clockwise direction relative to the jaw 1 and in this sense drives the first end 12 of the spring 11, the other end 13 remains free This tends to slightly loosen the spring 11 and rotates it by sliding with little friction on the cylindrical surface 10 of the core 8 that is why we can easily rotate the jaws 1 and 2 the towards each other in the closing direction of the forceps, until they intersect as the shows fig 3 and enclose the wall

of the bag 7.

  In this position, the jaws 1 and 2 are subjected by the bag to more or less large spacing forces, tending to spread them in the direction of the arrows B The jaw 2 then exerts on

  the end 12 of the spring 11 a force which tends to rotate this

  counterclockwise, so to tighten it on the core 8 With its initial tightening, the spring 11 is locked by friction on the core and thus prevents the jaws 1 and 2 from being separated from each other. the clamp can withstand opening forces in the direction of arrows B which are very high compared to the modest closing forces in the direction of the arrows A. When the clamp is tightened on the bag, it can be released and has the two hands to ligate the bag If necessary, it can also use the clamp in this way simply to close a bag provisionally between two uses To then open the clamp, hold for example the first jaw 1 in the right hand and, with the left hand, the control knob 20 is rotated in the direction of the arrow C, which causes the stud 23 to abut against the second end 13 of the spring 11 and therefore tends to loosen the spring which can slide easily. The clamp then opens in the direction of the arrows B, the jaw 2 being driven, in addition to the thrust of the bag, by the rotation of the other end 12 of the

  spring, which also tends to loosen it.

  The embodiment described above shows that a clamp according to the invention can be made in a simple and inexpensive way, since comprising only molded parts of synthetic material and a spring easy to manufacture and assemble. , the clamp has a safe operation and its use is very easy, even

for unskilled people.

  However, the present invention is not limited to the embodiment described above, but it extends to any modification or variant obvious to a person skilled in the art. In particular, it is possible to provide many other forms of the jaws. and other types

  locking members and release control members.

  FIGS. 4 and 5 schematically represent an embodiment of a clamp having other locking and unlocking means, but the same jaws 1 and 2 as the clamp described above. The molded part comprising the first jaw 1 may be similar. to that of Fig 1, with a central core 8 having a cylindrical peripheral surface 10 This core is engaged in a central bore of a cylindrical hub 30 integral with the second jaw 2 This hub 30 contains a cavity 31 having, on the opposite side at the core 8, a concave surface 32 which is slightly eccentric with respect to the axis 3 of the articulation and the core. The cavity 31 contains a roller 33 (or a ball) and a spring 34 exerting a slight thrust on the roller, in order to hold it in abutment against the cylindrical surface 10 of the core and the eccentric surface 32 of the hub An unlocking pusher 35 is movably mounted radially in the hub and has a surface d oblique end 36 which pushes the roller 33 against the spring 34 when the pusher is manually pressed in the direction of the arrow D. When the jaws 1 and 2 are brought together, the hub 30 rotates in the direction of the arrow E with respect to the core 8 The roller can slide or roll on the surface 10 of the core since the friction that results tends to compress the spring 34 and thus release the roller On the contrary, if the jaws 1 and 2 undergo forces tending to remove them and turn the hub 30 in the opposite direction to the arrow E, the roller 33 tends to block the jaws by wedging between the surfaces 10 and 32 can be removed or prevent it in advance by pressing the pusher 35 following the arrow D The pusher can then return to the position of fig 4 under the effect of

  spring 34 or another spring not shown.

  Pliers made according to the present invention can be used to hold all kinds of objects, and in particular to close or to help close all kinds of bags or bags with flexible wall, both for a short time and for a long time. may also consider incorporating such a clip into a bag, for example

  example to form a stock exchange

  For example, a rounded-jaw clamp may serve as a temporary collar around a bundle of electrical wires while wiring is performed. Jaw clamps may also be considered. flat, for example to hold bundles of

  sheets or textiles An additional spring may be incor-

  pored to tighten the jaws, if it is necessary to guarantee a permanent tightening.

Claims (8)

claims   1 Retaining clip, in particular for closing a garbage bag or for forming a collar around electric wires or cables, comprising two jaws arranged to be tight on an object and to hold it together, characterized in that: the jaws (1, 2) are connected by a hinge (shaft 3) allowing any one of the jaws to pivot relative to the other, the hinge is provided with a locking means (10 to 12, 18, 31 to   34) allowing pivoting of a jaw in a corresponding direction   clinging to the clamping of the jaws, and mutually locking the jaws (1, 2) when urged in the tightening direction, the articulation is provided with manually operated release means (20 to 24, 35, 36), arranged to unlock on command the blocking means.   2 gripper according to claim 1, characterized in that the locking means is of a type with friction locking or jamming under the effect of a spring (11, 34).   Gripper according to claim 2, characterized in that a first   (1) said jaws is integral with a core (8) with cylindrical periphery   jig (10), centered on the axis (3) of the hinge, and in that the locking means comprises a spring (11) at least partially surrounding the cylindrical periphery (8) of the core and provided with two projecting ends. , a first (12) is integral in rotation with the second jaw (2) and the other (13) cooperates with the means deblocking.   Gripper according to claim 3, characterized in that the second jaw (2) comprises a central hub (14) surrounding the core and the spring, and provided with a notch (18) in which is engaged   said first end (12) of the spring.   Gripper according to claim 3, characterized in that the unlocking means comprises a control button (20) movably mounted on the second jaw (2) and provided with an abutment surface (24) arranged to be pressed laterally against said other end (13) of the spring (11) by a movement of the button (20).   Gripper according to claims 4 and 5, characterized in that the   control knob (20) has a hollow cylindrical portion pivotally mounted on the hub (14) of the second jaw (2).   Gripper according to claim 2, characterized in that a first   (1) said jaws is integral with a core (8) with cylindrical periphery   centered on the axis of articulation (3), in that the second jaw (2) comprises a central hub (30) provided with an axial bore in which the core (8) is pivotally mounted and the locking means comprises a cavity (31) in the hub, laterally with respect to said bore and having an eccentric surface (32) opposite the circumference (10) of the core, and   a locking member (33) biased in a circumferential direction   by a spring (34) which tends to wedge it between the periphery   (10) of the core and the eccentric surface (37).   Clamp according to claim 7, characterized in that the locking member (33) is a roller or a ball, and in that the unlocking means comprises a pusher (35) movable in translation in said hub and provided with an oblique end surface (36) arranged to push the locking member in the opposite direction to the effect of the spring (34).   9 pliers according to claim 1, characterized in that the two jaws (1, 2) are substantially flat and curved, each jaw having a concave inner edge (5, 6) opposite the other   jaw, and are superimposed on both sides of an intermediate plane.   diaire, and in that the axis (3) of articulation is perpendicular to this plane. Pliers according to claim 4 or 7, characterized in that the first jaw (1) and the core (8) are formed of a single molded piece of synthetic material, and in that the second jaw (2) and the hub (14, 30) are also formed of a single molded piece of synthetic material.