EP0812660A1 - Vice - Google Patents

Abstract

A vice consists of a body (1) which can be mounted on a flat supporting surface and is equipped with a fixed jaw (10) and a rack (12), and a moving body (3) with a jaw (40) which can be moved relative to the fixed jaw and locked in the required position. The locking mechanism for the fixed and moving jaws consists of a peg (6) with a toothed end (61) which is operated by a lever (51) and cam (50) to engage with the rack. The moving jaw body (3) is articulated relative to the fixed jaw body about an axis (14) lying parallel to the fixed jaw, while the peg is urged towards the rack by a spring (62).

Description

The present invention relates to a vice device.

A vice is generally composed of two jaws, one fixed and the other movable, and of a member allowing the translation of the movable jaw to carry out a tightening, said member consisting in most cases in a screw-nut system. .

In use, the object to be clamped is placed against the fixed jaw, and the movable jaw is brought into contact with said object by turning the screw by means of a lever.

To successively tighten objects of different dimensions, it is necessary, before the tightening operation, to adapt the spacing of the jaws by bringing them closer or away from them, so that the tightening cannot be immediate.

The object of the present invention is to remedy this drawback by proposing a vice device allowing immediate tightening, not requiring prior adjustment of the spacing of the jaws.

The vise device which is the subject of the present invention is essentially characterized in that it comprises on the one hand a frame which can be secured to a flat support and comprising a fixed jaw and a rack, the latter being arranged in a plane perpendicular to said fixed jaw ; and on the other hand a movable jaw, comprising a body and a movable jaw in displacement relative to said body, said jaw being movable in displacement parallel to said rack with possibility of blocking on the latter by means of a movable finger in said body, provided with notches at its end opposite said rack, biased towards the latter by at least one spring and maneuverable by a lever articulated on said body, the articulated end of said lever being linked to a cam which takes support on the rear part of said movable jaw to allow the spacing of the latter relative to said body in the direction of said fixed jaw.

According to a first embodiment of the device according to the invention, on the one hand the body and the jaw of the movable jaw are articulated on an axis parallel to the jaw, and on the other hand the rack is in the form of an arc of a circle coaxial with said pivot axis.

According to an additional characteristic of the first embodiment of the device according to the invention, the finger is housed in a chamber radial to the pivot axis of the movable jaw, it is pushed back towards the rack by the spring, and it is linked to the cam so that the rotation of the latter, in the opposite direction to that used to move the movable jaw away from the body, causes said spring to be compressed.

According to another additional characteristic of the device according to the invention, the cam consists of a half-round non-coaxial with its pivot axis, part of which fits into a notch formed in the central region of the finger, the curved wall coming to the contact of the movable jaw, while the flat wall is capable of coming to bear against the upper edge of said notch.

The pivoting of the cam, by means of the operating lever, allows in a direction of rotation the disengaging of the finger of the rack and the pivoting of the body and of the movable jaw towards the fixed jaw in order to block the object to be clamped , and in the opposite direction, the engagement of the finger on the rack, therefore the blocking of the body, and, by prolonging the movement, the spacing of the movable jaw from the body, therefore its approximation of the fixed jaw in order to tighten said object .

According to a second embodiment of the device according to the invention, the movable jaw is slidably mounted parallel to a rectilinear rack, by means of guides integral with the body of said movable jaw, while the jaw thereof is movable sliding on said guides.

According to an additional characteristic of the second embodiment of the device according to the invention, the guides are tubular parts which slide on parallel bars integral with the frame.

According to the invention, the cam is secured in rotation to the lever by means of a retractable lug in said lever.

The two embodiments are not intended for the same uses because of the different kinematics of the movable jaws, the first mode is more particularly intended for the clamping of cylindrical objects such as tubes, while the second allows the clamping of flat objects , also, the jaws of the first embodiment are preferably of V-section, one concave and the other convex, while the jaws of the second embodiment are flat.

The advantages and characteristics of the present invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents several non-limiting embodiments.

• la figure 1 représente une vue en perspective et en éclaté avec arraché partiel d'un premier mode de réalisation du dispositif d'étau selon l'invention.
• les figures 2a, 2b et 2c représentent des vues schématiques de côté du même dispositif lors de différentes phases de son utilisation.
• la figure 3 représente une vue en perspective d'un second mode de réalisation du dispositif d'étau selon l'invention.
• la figure 4 représente une vue partielle en coupe partielle selon un plan vertical longitudinal non médian, du même dispositif.
• la figure 5 représente une vue partielle en perspective et en éclaté du même dispositif.
• les figures 6a, 6b et 6c représentent des vues partielles en coupe selon un plan longitudinal médian, du même dispositif, lors de différentes phases d'utilisation.
• la figure 7 représente une vue en perspective d'un dispositif de fixation du dispositif d'étau selon l'invention.

In the attached drawing:

• Figure 1 shows a perspective and exploded view with partial cutaway of a first embodiment of the vice device according to the invention.
• Figures 2a, 2b and 2c show schematic side views of the same device during different phases of its use.
• FIG. 3 represents a perspective view of a second embodiment of the vice device according to the invention.
• FIG. 4 represents a partial view in partial section along a non-median longitudinal vertical plane, of the same device.
• FIG. 5 represents a partial view in perspective and exploded from the same device.
• Figures 6a, 6b and 6c show partial sectional views along a median longitudinal plane, of the same device, during different phases of use.
• FIG. 7 represents a perspective view of a device for fixing the vice device according to the invention.

If we refer to Figure 1 we can see that a vice device according to the invention comprises a frame 1, which can be secured by appropriate means, not shown, to a workbench for example, a movable jaw 2 comprising a body 3 and a movable jaw 4.

The frame 1 comprises a jaw 10 and, projecting perpendicularly, a flat part 11, the upper edge of which is a rack 12 in the form of an arc of a circle concentric with a transverse hole 13 intended to accommodate an axis 14 for pivoting assembly body 3 and movable jaw 4.

The movable jaw 4 comprises a jaw part 40 and two branches 41 passing on either side of the part 11, and in each of which a hole 42 is made, of which only one is visible, for the passage of the axis 14.

The body 3 comprises two branches 30, passing on either side of the branches 41 of the movable jaw 4, in each of which a hole 31 is made, of which only one is visible, for the passage of the axis 14.

The jaw 4 and the body 3 are brought back apart by a spring, not shown, threaded on the axis 14 and bearing on the frame 1 and on the movable jaw 4.

The body 3 has at its free end 32 a transverse channel 33 into which is introduced a shaft 5 movable in rotation under the action of a lever, not shown, and which comprises in its central region an eccentric 50 consisting of a half - non-coaxial round.

The channel 33 centrally includes a lumen 34 allowing the rear wall 43 of the movable jaw 4 to enter in contact with the eccentric 50.

The body 3 also includes internally a dark channel 35, radial to the axis 14, emerging between the branches 30 and partially passing through the channel 33 in line with the eccentric 50, and in which is housed a finger 6, of general shape cylindrical, the lower end 60 of which has transverse notches 61 of shape complementary to that of the teeth 15 of the rack 12.

The finger 6 is movable in axial translation in the channel 35, and it is pushed back towards the rack 12 by a spring 62 bearing on the bottom 35 ', not visible in the figure, of the channel 35.

The finger 6 also has in its central region a notch 63 in which a part of the eccentric 50 takes place, which in particular makes it possible to prohibit the rotation of the finger 6 in the channel 35.

If we now refer to FIG. 2a, we can see that during an upward push, in the direction of the arrow F, on the lever 51 for operating the shaft 5, the latter turns in the direction H and the flat face 52 of the eccentric 50 comes into contact with the upper edge 63 'of the notch 63, which causes the finger 6 to rise by compressing the spring 62 against the bottom 35', and the teeth 61 to disengage teeth 15.

If we now refer to FIG. 2b, we can see that the extension of the thrust in the direction of arrow F on the lever 51 has the effect of pivoting the body 3 which drives the movable jaw 2, the jaw 40 of which approaches jaw 10 of frame 1.

If we finally refer to Figure 2c we can see on the one hand that the relaxation of the thrust on the lever 51 causes, under the action of the spring 62, the descent of the finger 6 and the meshing of the teeth 61 thereof. ci in the teeth 15 of the rack, which blocks the body 3 in a certain position, and on the other hand that a push down, in the direction of arrow B, on the lever 51 pivot the shaft 5 in the direction A, and the curved wall 53 of the eccentric 50 bears on the rear wall 23 of the movable jaw 2 which moves away from the body 3, the jaw 40 approaching the jaw 10 of the frame 1 .

The displacement of the body 3 and its blocking on the rack 12 allow the object to be clamped to be held between the movable jaw 2 and the frame 1, and the displacement of the movable jaw 2 under the action of the eccentric 50 allows '' refine the tightening.

The tightening operation can thus be carried out easily and quickly by holding the object to be tightened with one hand and by operating the lever 51 with the other.

Note the particular profiles of the jaws 10 and 40, namely in V, concave for the jaw 10 of the frame 1 and convex for the jaw 40, the profiles of these jaws are more particularly suitable for clamping tubes.

If we now refer to Figures 3 and 4 we can see that according to a second embodiment, the vice device according to the invention comprises a frame 7, comprising a base 70 of planar and rectangular shape, intended to be secured by its lower face 71 to a flat support of the table or established type, and two vertical walls 72 and 73 facing each other, one at each end of the base 71, the wall 72, higher than the wall 73, carrying on its inner face a bit 74.

Two parallel bars 75, of round section, extend between the walls 72 and 73 to which they are secured by their ends, while a rack 76 having transverse notches 760 is secured to the upper face 77 of the base 70, parallel to the bars 75.

The vice also includes a carriage 20, movable in sliding on the bars 75 by means of tubular guides 21, only one of which is visible in FIG. 4.

The carriage 20 comprises a body 36 and a jaw 44 parallel to the fixed jaw 74, the jaw 44 is movable by sliding on the tubular guides 21 which are integral with the body 36.

The body 36 is traversed transversely by an axis 88, and it has a central opening 37 in which is engaged the end 80 of a lever 8, not shown in Figure 4, which is pivotally articulated on the axis 88 .

If we now refer to FIG. 5, we can see that the end 80 of the lever 8 comprises two coaxial discs 81 separated by a space 82 and pierced with a hole 83 for the passage of the axis 88.

The space 82 is intended to accommodate a disc 55 having a hole 56 for the passage of the axis 88, and having, over approximately a quarter of its circumference on the side of the jaw 44, a cam portion 57, that is to say - say that the radius of this part is not constant and increases from top to bottom.

The disc 55 is in free rotation on the axis 88, but the lever 8 comprises means making it possible to join it which will be described later.

We can also see in Figure 5 a finger 6 'in the shape of a stirrup, comprising a crosspiece 64 surmounted by two parallel uprights 65 each having on their internal edge, in substantially median position, a notch 66, while the crosspiece 64 has at its lower edge and centrally a series of notches 67 of shape complementary to that of the notches 760 of the rack 76, not shown.

The finger 6 'is intended to be introduced into a housing 38 that comprises the body 36, shown in broken lines in Figure 4, opening on the underside 39 thereof in line with the rack 76, and positioned in rear of the axis 88 passage.

The finger 6 'can move in the housing 38 to allow the engagement of the notches 67 in the notches 760 of the rack 76, under the action of two springs 68 housed in two holes 69 each made in the uprights 64 at the upper end thereof and which bear against the bottom 38 'of the housing 38.

The end 80 of the lever 8 also comprises, projecting from each of the external faces of the discs 81, two pins 84, only one of which is visible in the figure, intended to take place each in one of the notches 66 of the finger 6 ' .

If we now refer to Figures 6a, 6b and 6c we can see the operation of the vice device according to the invention.

In FIG. 6a, while an object to be clamped 16 is placed against the fixed jaw 74, the carriage 20 is moved in the direction of the latter, by pushing on the lever 8 in the direction of the fixed jaw 74 in the direction arrow C, until the jaw 44 comes into contact with the object 16, the pressure on the lever 8 in the direction of arrow C having the effect, via the lugs 84 which bear on the upper edges 66 ′ of the notches 66, the raising of the finger 6 ′ by compressing the springs 68, therefore the disengagement of the notches 67 from the notches 760 of the rack 76.

In FIG. 6b, when the movable jaw 44 is in contact with the object 16, the pressure on the lever 8 is released, so that under the effect of the springs 68, the finger 6 'slides in its housing 38 and the notches 67 mesh with the notches 760 of the rack 76, thus blocking the carriage 20.

In FIG. 6c, the lever 8 is lowered in the direction of the arrow D, which has the effect of rotating the disc 55, the cam portion 57 of which rests on a pin 45 which the jaw 44 has on its rear face. 46, pushes back the jaw 44 which slides on the tubular guides 21 and clamps the object 16, the body 36 remaining anchored on the rack 76.

In this embodiment the disc 55 is in free rotation on the axis 88, possibly being braked by an appropriate means such as an O-ring not shown, its attachment to the lever 8 is achieved by means of a lug 85 which has at its end a rod 86 slidably mounted axially in the lever 8, and capable of engaging in a notch 58 formed in the edge of the disc 55.

The retraction of the lug 85 is produced by a system of known type which will not be described, and controlled by a button 87, visible in FIG. 5, which comprises the lever 8 at its free end.

After tightening of the object 16 the lug 85 can be retracted and disengaged from the notch 58, which makes it possible to lower the lever 8 which then does not constitute a gene for carrying out work on the object 6.

It will be noted that the lever 51 and the shaft 5 of the first embodiment can also be secured by a similar device.

According to a variant, not shown, the device may not include this arrangement, in this case the end 81 of the lever 8 only includes the cam part 57 which is secured to it by screwing for example.

Referring now to Figure 7, we can see a fixing device 9 of the vice device according to the invention.

This fixing device 9 comprises an L-shaped body 90 of which a branch 91 has at its end, projecting perpendicularly, two parallel rods 92 and 93, while the other branch 94 is crossed perpendicularly by a screw 95 provided with its lower end of a handle 96 for maneuvering and at its other end with a flat tip 97.

The rods 92 and 93 are intended to be introduced into two of the holes 78, visible in FIGS. 3 and 4, which have regularly spaced around its periphery the base 70, while the branch 94 of the body 90 is placed under the flat support, not shown, on which the base 70 rests, then the screw 95 is tightened until the flat end piece 97 comes to bear against the underside of the support.

It will be noted that the frame 7 can also be secured to a support by screwing, by means of screws introduced into holes 79 made in the base 70, only one of which is visible in FIG. 3.

Claims (11)

Vise device characterized in that it comprises on the one hand a frame (1, 7) which can be secured to a flat support and comprising a fixed jaw (10, 74) and a rack (12, 76), the latter being disposed in a plane perpendicular to said fixed jaw (10, 74); and on the other hand a movable jaw (2, 20), comprising a body (3, 36) and a jaw (4, 44) movable in displacement relative to said body (3, 36), said jaw (2, 20) being movable in displacement parallel to said rack (12, 76) with the possibility of locking thereon by means of a finger (6, 6 ') movable in said body (3, 36), provided with notches (61 , 67) at its end opposite said rack (12, 76), biased towards the latter by at least one spring (62, 68) and maneuverable by a lever (51, 8) articulated on said body (3, 36), the articulated end of said lever (51, 8) being linked to a cam (50, 55) which bears on the rear part (43, 45) of said movable jaw (4, 44) in order to allow the spacing of the latter relative to said body (3, 36) in the direction of said fixed jaw (10, 74). Device according to claim 1 characterized in that on the one hand the body (3) and the jaw (4) of the movable jaw (20) are articulated on an axis (14) parallel to the fixed jaw (10), and on the other hand the rack (12) is in the form of an arc of a circle coaxial with said pivot axis (14). Device according to claim 1 or claim 2 characterized in that the finger (6) is housed in a chamber (35) radial to the pivot axis (14) of the movable jaw (2), it is pushed back in the direction of the rack by a spring (62), and it is linked to the cam (50) so that the rotation of the latter, in the opposite direction (H) from that making it possible to spread the movable jaw (4) of the body (3), causes the compression of said spring (62). Device according to any one of the preceding claims, characterized in that the cam (50) consists of a half-round non-coaxial with its pivot axis (5), part of which is inscribed in a notch (63) formed in the central region of the finger (6), the curved wall (53) coming into contact with the movable jaw (4), while the flat wall (52) is capable of coming to bear against the upper edge (63 ') of said notch (63). Device according to any one of the preceding claims, characterized in that the jaws (10, 40) have complementary V-shaped profiles, the jaw (10) of the frame (1) being concave and the jaw (40) of the movable jaw ( 2) being convex. Device according to claim 1 characterized in that the movable jaw (20) is slidably mounted parallel to a rectilinear rack (76); by means of guides (21) integral with the body (36) of said movable jaw (20), while the jaw (44) of the latter is movable by sliding on said guides (20). Device according to claim 6 characterized in that the guides (21) are tubular parts which slide on parallel bars (75) integral with the frame (7). Device according to claim 6 or claim 7 characterized in that the articulated end (80) of the lever (8) comprises two coaxial discs 81 separated by a space (82) and pierced with a hole (83) for the passage of the pivot axis (88) on the body (36), said space (82) being intended to accommodate a disc (55) mounted in rotation on said axis (88), secured to said lever (8), and having, on about a quarter of its circumference a cam part (57), namely that the radius of this part is not constant and increases from top to bottom. Device according to claim 8 characterized in that the finger (6 ') is movable in a housing (38) formed in the body (36) and opening in line with the rack (76), said finger (6') is in the form of a stirrup , it comprises a crosspiece (64) surmounted by two parallel uprights (65) each comprising at their end a return spring (68), and each having on their internal edge, in a substantially median position, a notch (66), while said crosspiece (64) has at its lower edge and centrally the notches (67); and in that the articulated end (80) of the lever (8) laterally comprises lugs (84) each taking place in one of said notches (66) against the upper edges (66 ') of which they are susceptible, during the raising said lever, to abut in order to compress the springs (68). Device according to any one of the preceding claims, characterized in that the cam (5, 55) is secured to the lever (51, 8) by means of a retractable lug (85). Device according to any one of the preceding claims, characterized in that the frame (1) has on its periphery, regularly spaced, holes (18) intended to allow the joining of said frame (1) on a flat support by means of a fastening device (9) comprising on the one hand two parallel rods (92, 93) intended to be introduced into two of said holes (18); and secondly a fixing means (95) on the flat support on which rests said frame (1).

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