FR2745527A1 - Clip for pinching and binding papers or similar - Google Patents

Abstract

The clip A for holding paper B comprises a U-shaped resilient press cover (4) which surrounds and is slidably mounted on a similarly shaped resilient clip body (1) having pinch jaws (3a. The press jaws are slidably coupled to each of the pinch jaws. The clip A grips when the press cover (4) slides towards the clip body by device of tabs (8) engaged in grooves (7) causing the jaws (3a) on the clip body to be forced together. The clip body has a smaller spring constant than the press cover.

Description

The present invention relates to a pincer for pinching and

connect papers or the analog.

  There are various types of conventional pliers, such as a double gripper in which the user uses his fingers to act on actuating levers and spread contact parts, a paperclip constituted by a double loop of metal son, or a sheet metal clamp in which the metal clip having bent pinch jaws is attached to papers using a clip presser

clamp mounting).

i5

  Although the double gripper exerts a great force of

  such a large double gripper requires

  an important force to open the jaws of pinching.

  There are cases where these pinch jaws can not be opened. When the papers connected by the clamp are stacked on other papers, it appears the disadvantage that the whole stack becomes bulky because of

  operating levers. Because the paper clip alone

  papers between loops, the disadvantage is that the pinch force is too weak to pinch papers

thicker.

  Although the sheet metal clamp is suitable and can exert sufficient pinching force, it can not be used without a separate clamp pushing device. Accordingly, the present Applicant has improved the conventional gripper so as to open and close the gripper jaws of the gripper without using any thrust device. An object of this invention is to provide a paper clip which does not require any fastening device, which is easy to

  manipulate and can produce an important pinching force

  you. In order to achieve the above purpose, a clamp of the present invention clamps papers or the like between two clamping jaws which are resiliently deformable and bent and depart from opposite ends of a base portion having a given height. . The clip comprises: a clip body of resilient material having a relatively low elastic constant, the clip body comprising a pinch base portion having a height

  given and two clamping jaws, upper and lower

  which are bent and extend continuously diverging from the opposite ends of the nipping base portion, each nip having at its distal end a nip section which is bent inward towards the nipping base portion, and a clamping cover of an elastic material having a relatively large elastic constant and slidably mounted on the clamp body, the clamping cover comprising a base portion of

  tightening and two clamping jaws, upper and lower

  re, which are bent and extend continuously converging from opposite ends of the clamping base portion, each clamping jaw being slidably coupled to each of the clamping jaws, the clamping cap being formed to be between the distal ends of the clamping jaws a narrower gap than a maximum gap between the clamping jaws of the clamp body. The gripping sections of the gripping jaws are moved toward and away from each other when the gripping clamp clamp jaws are slid onto the gripping jaws as they move toward and away from the gripping jaws. their

distal end.

  Each gripping jaw of the gripper body has a multiplicity of guide slots. Each clamping jaw has a multiplicity of guide tabs adapted to engage the respective guide slots. One of the curved portions of the clamping jaws of the clamp body can be shifted by a given distance to

  the front compared to the other bent portion. Preferably

  this, the pinch section having the bent portion

  offset is longer than the other nip section.

  Preferably, the clamping base portion has on its opposite ends a rib and each of the clamping jaws is provided with a rib on its opposite lateral edges. It is possible to smoothly introduce the papers or the like into the clamp, since the clamping sections of the clamp body extend diverging towards the

  distal ends of the jaws of nip.

  When the clamping cover is pushed onto the clamp body, the clamping clamp clamping jaws push the clamping jaws inwardly sliding on the clamping jaws, causing these clamping jaws to draw closer to the clamping jaws. of the fact that the insertion gap defined between the clamping jaws of the clamping cover is narrower than the maximum gap defined between the clamping jaws.

pinching the clamp body.

  At this time, since the nip portion of each nip jaw of the nip body is bent inwardly and is directed toward the base portion of

  pinch, the pinch section exerts an elastic force

  than. It is possible to obtain a large pinching force by adding the above elastic force to the clamping force exerted in the clamping cover. Further, because the nip sections are bent in the direction of introduction of the papers or the like, a strong resisting force is produced toward the papers, or the like, which force can develop between the upper faces. papers or the like and pinch sections, thus preventing papers or the like from coming out of the clip. Because the nip section of each nip jaw is bent from the distal end of the nip jaw and one of the nip sections is directed, staggered, toward the nip base portion of the nip body. clip, there is no risk that the

  pliers injures a user's finger.

  In the case where the size of the clamp becomes large, the upper and lower side edges of the clamp body or the clamping cover can injure the user's finger. However, it is possible to protect the user's finger from the lateral edges by

providing ribs.

  The invention will be better understood on reading the description of

  following detailed description of several embodiments of the clamp according to the invention, in conjunction with the accompanying drawings, in which:

  FIGS. 1 (a) to 1 (c) are longitudinal sectional views.

  nal of a clamp according to the present invention, illustrating the functional relationship between the body of the clamp and a clamping lid; Figure 2 is an exploded perspective view of the clamp shown in Figure 1, showing the clamp body in Figure 2 (a) and the clamping cover in Figure 2 (b); - Figure 3 is a perspective view of the clamp according to the present invention, in use; - Figure 4 is a longitudinal sectional view of another embodiment of the clamp according to the present invention; - Figure 5 is a longitudinal sectional view of the clamp shown in Figure 4, illustrating a condition of maximum cooperation between the clamp body and the clamping cover; FIGS. 6 (a) and 6 (b) are explanatory views of a state of safety in use, illustrating the gripper according to FIG.

  the present invention in FIG. 6 (a) and the conventional clip

  in Figure 6 (b); and - Figure 7 is a longitudinal sectional view of another

  embodiment of the clamp according to the present invention.

  We will now describe in detail a first mode

  embodiment of a clamp according to the invention.

  Figures 1 (a) to 1 (c) are longitudinal sectional views of a clamp A according to the present invention, illustrating the functional relationship between a clamp body 1 and a

  Closing cover 4. Figure 2 is a perspective view

  An exploded view of the clamp A shown in FIG. 1, illustrating the clamp body 1 in FIG. 2 (a) and the clamping cover 4 in FIG. 2 (b). Figure 3 is

  a perspective view of the clamp A of the present invention.

  tion, illustrating a state of the clamp in use.

  The clamp A of the present invention comprises the body of

  pliers 1 made of an elastic material having an elastic constant

  relatively low and the clamping cover 4 of an elastic material having a relatively large elastic constant. Here, the elastic constant K is defined by a formula F = Kx, where x is a displacement distance

and F is a force.

  The clamp body 1 and the clamping cover 4 are formed by bending a flat plate of the desired shape, such as a metal sheet, a synthetic resin sheet or

  the analog. The clamping cover 4 is slidably mounted

  on the clamp body i so as to be able to pinch the

papers or the like.

  As seen in FIG. 2 (a), the flat plate of the desired shape is formed into the gripper body 1, comprising a nipper base portion 2 having a given width or height X and two jaws of nip, upper and lower, 3, 3 which are bent continuously diverging from the opposite ends of the nipper base portion 2. In this embodiment, each of the nip jaws 3, 3 has on its distal end a nip section 3a which is bent inwardly from the distal end of the nip jaw 3 and which is directed towards the nipper base portion 2. An introduction gap Z is defined between

  the distal ends of the nip sections 3a, 3a.

  Therefore, a gap V defined between curved portions 3b, 3b connecting the gripping jaws 3, 3 and the gripping sections 3a, 3a respectively will become a maximum gap between the gripping jaws 3, 3 of the gripper body 1 in this case. embodiment. In the position shown in Fig. 2 (a), the insertion gap Z defined between the distal ends of the nip sections 3a, 3a becomes maximum. The width or height X of the pinch base portion 2 can be

  modified according to the thickness of the B papers to be bound.

  As seen in Figure 2 (b), the flat plate of the

  desired shape is formed into the clamping cap 4 comprising

  a clamping base portion 5 having a given width or height X 'and two upper and lower clamping jaws 6, 6 which are bent continuously converging from opposite ends of the clamping base portion 5. An introduction gap Y defined between the distal ends of the clamping jaws 6, 6 is smaller than the height X of the nipper base portion 2 of the clamp body 1. The insertion gap Y is smaller than the height X 'of the clamping base portion 5 of the clamping cover 4. It should be noted that the above dimensions are given only as an example and

  that the present invention is not limited to dimensions.

  It is important, however, that the insertion gap Y be narrower than the maximum interval V of the gripper body 1. For example, the introduction interval Y may be wider than the introduction interval Z of the gripper body 1. body of

thin 1.

  The dimensional relationship above will be given by the following formula:

  introductory interval Y <height X <insertion interval

duct Z <width or height V.

  However, the above formula is just one example. Inter-

  introductory valence Y may be smaller than the interval

  Z, provided that the interval of introduction-

  Y is smaller than the width or height V. The clamping cover 4 is slidably mounted on the clamp body 1 by spacing the clamping jaws 6, 6 from the clamping cover 4 and engaging the distal ends of the clamping jaws 6, 6 on the clamping jaws 3, 3 of the clamp body 1. The clamping sections 3a, 3a of the clamping jaws 3, 3 are brought closer to one another when the clamping cover 4 is slid to In a variant, as hereinafter described with reference to FIG. 5, the clamping sections 3a, 3a can be brought into contact with each other when the cover tightening 4

  is in the full thrust position.

  As seen in FIG. 2 (a), each of the clamping jaws 3, 3 of the clamp body 1 has a multiplicity of guide slots 7, 7 (two slots in the embodiment shown) and each of the clamping jaws 6 , 6 of the clamping cover 4 has a multiplicity of guide tabs 8, 8 (two tabs in the embodiment shown) adapted to be engaged in the guide slots 7, 7, as seen in Figure 2 (b). The guide lugs 8, 8 are housed in the guide slots 7, 7 respectively so that the lugs 8, 8 can slide in the slots 7, 7 but they can not leave the slots 7, 7. Thus , the clamping cover 4 is slidably mounted

on the clamp body 1.

  In this embodiment, the clamping cover 4 can not be accidentally separated from the clamp body 1, since the guide lugs 8, 8 of the clamping cover 4 are slidably engaged in the guide slots 7, 7, but can not be removed and the height X of the nipper base portion 2 of the clamp body 1 is larger than the insertion gap Y between the

  clamping jaws 6, 6 of the clamping cover 4.

  Although the drawing does not show this change, each

  clamping jaw 6, 6 can have on its inner face

  respective one or more dovetail protrusions or any other projection having a desired shape. The guide slot may be a non-through slot, that is to say a recess. We will now explain an example of use of the clamp described in this embodiment by referring to

Figure 3.

  The papers or the analogue B can be introduced without

  in the clamp body 1 through the insertion gap Z defined between the distal ends of the clamping sections 3a, 3a of the clamping jaws 3, 3, as the clamping jaws 3, 3 depart from the base pinch portion 2 up to

  distal ends (see Figures l (a) and 1 (b)).

  When the clamping cover 4 is slid forwards (in the direction indicated by the arrow W in FIG. 3) onto the clamping jaws 3, 3 of the clamp body 1 into which the B-papers are inserted, the jaws of FIG. clamping 6, 6 of the clamping cover 4 push the clamping jaws 3, 3 of the clamp body 1 inwardly sliding on these clamping jaws 3, 3 so that the clamping jaws 3, 3 come closer to the clamping jaws 3, 3. one of

  the other (by reducing the size of the introductory

  Z), thus firmly pinching the papers B between the nip sections 3a, 3a. Because the clamp body 1 and the clamping cover 4 are made of a resilient material, the clamping jaws 3, 3 can firmly clamp the papers B, while being elastically deformed by the clamping jaws 6, 6 of the cover. tightening 4 (see

Figure l (c) and 3).

  Elastic recovery forces exerted in the nip sections 3a, 3a and thus the thrust forces exerted in the clamping jaws 6, 6 of the clamping cover 4 can enhance the pinch force for the B papers. where the thickness of B papers

  is important, the pinch sections 3a, 3a of the cheeks

  The nip 3, 3 are first deformed, thereby preventing the clamp body 1 and the clamping cover 4 from being enlarged. This can prevent stacked papers from taking

an important place.

  When it is desired to remove the clip A from the papers B, the clamping cover 4 is slid in the opposite direction on the clamp body 1 to suppress the pushing forces.

  exerted on the clamping jaws 3, 3 (see

  re l (b)). A strong resistant force is produced between the top faces of the papers B and the nip sections 3a, 3a when the clamping cover 4 is moved backwards, since the niping sections 3a, 3a of the nip jaws 3, 3 are curved in the direction of introduction of papers B. As a result, the clamping cover 4 slides smoothly over the clamp body 1 and the clamping jaws 3, 3 of the clamp body

1 are surely open.

  A second embodiment will now be described.

  FIG. 4 is a longitudinal sectional view of another

  embodiment of the clamp A according to the present invention.

  tion. FIG. 5 is a longitudinal sectional view of the clamp A shown in FIG. 4, showing a state of

  maximum cooperation between the clamp body 1 and the cover

  4. Figures 6 (a) and 6 (b) are views explaining the safety of use, showing the clamp A of

  the present invention in Figure 6 (a) and the conventional clip

in Figure 6 (b).

  In this second embodiment, which is seen in FIG. 4, one of the curved portions 3b, 3b of the clamp body 1 (the upper portion in the drawing) is shifted forward (left side on the drawing) by a given distance d relative to the other curved portion 3b (the lower portion in the drawing) and the niping section 3a (the upper section in the drawing) having the offset curved portion 3b (the upper portion on the drawing); the drawing) is longer than the other nip section 3a (the lower section on the drawing). In this structure, as seen in Figure 5, when the clamping cover 4 is slid all the way to the clamp body 1, the clamping sections 3a, 3a of the clamping jaws 3, 3 of the clamp body 1 enter in contact with each other, thus curving each other. Each of the nip sections 3a, 3a in the non-contact free position is

  indicated by the dashed lines in Figure 5.

  If the two nip sections 3a, 3a are short, the resilient resilient force becomes large. This may increase the binding strength of the papers, but this can not use a lever arm obtained by elastic deformation of the nip sections 3a, 3a. As a result, the structure in which one nip section 3a is longer than the other nip section 3a, as seen in FIG. 4, can simultaneously use the nip

lever of the two sections 3a, 3a.

  It is easy to introduce the end of the papers B into the clamp A, since one of the distal ends of the nip sections 3a, 3a is held back in the direction of introduction of the B papers. see it in Figure 6 (a), even though the finger of

  the user accidentally comes into contact with the

  distal mite of the clamp A, the latter can not hurt the finger. On the contrary, Figure 6 (b) shows a

  clamp structure that does not provide the benefit above.

  In this case, one of the distal ends of the clamping jaws of the clamp body 1 'is not held back. In such a structure, the finger of the user

  can be injured by the end of the forceps.

  A third embodiment will now be described.

  FIG. 7 is a longitudinal sectional view of this third

  seventh embodiment of the clamp A according to the present invention. In this embodiment, as seen in FIG. 7, the clamping base portion 5 of the clamping cover 4 has on its opposite ends a rib 9 and each of the clamping jaws 3, 3 has on its ends.

  opposite side edges a rib 11.

  In the case where the clamp A has a large size, it is preferable that the clamp body 1 is of a thin material in order to use the resilient resilient forces exerted in the clamping sections 3a, 3a. However, because the rigidity of the clamp body 1 is reduced if the material becomes thin, the clamp body 1 is reinforced by the ribs 11 provided on the clamping jaws 3, 3. The ribs 11 also serve not to injure the finger of

  the user during use.

  In addition, excessive external force may be applied to the clamping cover 4 in the large clamp A, thereby causing plastic deformation in the clamping cover 4. The ribs 9 serve to prevent the clamping jaws 6, 6 d the ribs 9 are also used to exert a large clamping force without increasing the thickness of the clamping cover 4, and to reduce the cost of production. It should be noted that the present invention is not limited to the above embodiments. It is possible to change the lengths, the lateral widths, the widths or heights X, X 'of the basic portions or the analog, of the

  clamping jaws 3, 3 of the clamp body 1 and the jaws

  6, 6 of the clamping cover 4 if desired. The clamp body 1 and the clamping cover 4 can be either in the same material or in material

different.

  The present invention provides a new paper clip, which exerts a pinching force by moving the diverging clamping jaws closer to the clamp body by means of a clamping force. The clip of the present invention does not require any attachment device and can produce a large pinch force by

  simple operation compared with conventionally

  such as paper clips, double tongs,

  sheet metal clamps, which require an attachment device

che, or the analog.

  It is possible to smoothly introduce the papers into the

  pliers, because the jaws of pinching extend in divergence

  from the base nip portion to their distal ends. When the clamping cover is pushed all the way onto the clamp body, the clamping cover pushes the clamping jaws inwardly sliding on the clamping jaws and brings the clamping jaws closer to each other because insertion gap between the clamping jaws of the clamping cover is narrower than the maximum gap between the jaws of

  pinching of the clamp body, which makes it possible to pinch

  papers between the jaws of pinching.

  The clip according to the present invention can securely and positively connect the papers or the analog without using a

special fastening device.

Claims (4)

claims   1. Clip (A), which clamps papers or the like between two clamping jaws (3, 3), which are elastically deformable and are bent and depart from opposite ends of a base portion (2) having a height characterized in that it comprises: a gripper body (1) of an elastic material having a relatively small elastic constant, said gripper body comprising a gripping base portion (2) of a given height (X) and two upper and lower nip jaws (3, 3), which are bent and extend continuously diverging from opposite ends of said nip base portion (2), each nip jaw (3, 3 ) having on its distal end a nip section (3a) which is bent inwardly directed towards said nip base portion (2), and a clamping lid (4) of an elastic material having an elastic constant relatively impo a clamping portion comprising a clamping base portion (5) and two upper and lower clamping jaws (6, 6) which are bent and extend continuously; converging from opposite ends of said clamping base portion (5), each clamping jaw (6, 6) being slidably coupled to each of said clamping jaws (3, 3), said clamping cover having between the ends distal from said clamping jaws (6, 6) a gap (Y) narrower than a maximum gap (V) between said clamping jaws of said clamp body, whereby said clamping sections (3a, 3a) said gripping jaws are brought together and spaced apart from each other when said clamping jaws (6, 6) of said clamping cover (4) are slid onto said gripping jaws as they move towards and away from the distal end of these.   Gripper according to claim 1, characterized in that each gripping jaw (3, 3) of said gripper body (1) has a multiplicity of guide slots (7), and in that each clamping jaw (6). said clamping cover (4) has a multiplicity of guide tabs (8)   adapted to engage in the respective guide slots ves.   3. Pliers according to claim 1, characterized in that one of the curved portions (3b, 3b) of said clamping jaws (3, 3) of said clamp body (1) is shifted by a given distance (d) to the front with respect to the other curved portion, and in that the nip section having the offset bent portion is longer than the other pinch section.   4. Pliers according to claim 1, characterized in that said clamping base portion (5) has on its opposite ends a rib (9), and in that each of said clamping jaws (3, 3) has on its edges   opposite sides a rib (11).