CN1070358A - Clamping device - Google Patents

Abstract

One workbench comprises a pair of relative clamping jaws in order to clamping one workpiece.Clamping plate are rack-mount, and support is hinged in such a way, promptly under the effect of the downward force that power produced that applies by device deadweight and/or workpiece weight and/or user, clamping plate automatically one enter a clamped position towards another displacement.

Description

Clamping device

The present invention relates to a kind of clamping device that is used for a workpiece of clamping, relate to a kind of workbench that this clamping device is installed specifically.

Traditional workbench or buck have a less relatively working region by outrigger support, and this zone provides the working surface of a height in the middle of Cain and Abel.A kind of like this height can make that various operations are easier to be finished, and for example the saw of timber digs or boring and the similar operations on non-timber product.This traditional class workbench is typically provided with the device of holding workpiece, and keeping the convention of workpiece is to exert pressure with a hand or knee.Clamping just can be not firmly and yet difficulty like this, and dangerous sometimes yet.The another kind of selection is the clamp immobilization material of using D-clamp or G-clamp and so on, but places to get up usually not to be easy to, and consequently workpiece still is fixed unsatisfactorily, and clamp also can hinder near workpiece.

Proposed Foldable workbench, and comprised a top work surface that is made of relative clamping plate shape part, one of the mode that clamping plate shape part can bench vice is towards another displacement, so that clamp a workpiece.The thread mechanism that activates clamping plate makes structure complicated, and manufacturing cost is also more expensive relatively.

According to the present invention, a device that is used for releasably clamping a workpiece is provided, has comprised a pair of relative clamping jaws, like this device of connecting cleat, promptly act on power downward on the clamping plate and make and relatively move between the clamping plate, thereby between them, clamp a workpiece.

Two clamping plate preferably are installed in two hinged supportings on corresponding one separately, like this, when using this device, the lower end seat of supporting is on an area supported, under the vertical force that power applied that deadweight and/or workpiece and/or user by device apply, the lower end of supporting can one with respect to another to top offset, thereby make one on clamping plate move into a clamped position towards another.

One of them is bearing in its lower end can comprise a roller means, so that moving along area supported.

In a most preferred embodiment of the present invention, device forms a workbench, and one of them clamping plate forms a working surface of workbench, and the lower end seat of supporting on the ground.One of them is bearing in its lower end can have roller or roller along ground surface, and another supporting can comprise a leg.Its configuration can stop moving along ground.Leg can be convex so that during clamping plate move, be bearing in ground swing.

In an optimised form, one of them clamping plate can comprise an adjustable clamping part, and it is adjustable to a chosen distance from the relative clamping part of another clamping plate.In this structure, first clamping plate can limit a bigger workbench working surface, and its clamping part can move to a chosen position on working surface.Movable clamping part preferably can infinitely be adjusted to a chosen position, and also preferably takes obliquity with respect to the clamping part of another clamping plate.

In another optimised form, itself be adjustable to a chosen distance by simple one of them clamping plate of sliding action, to be locked in this chosen position from the relative clamping part of another clamping plate.In this structure, two clamping plate can limit a flat continual working surface.

In another embodiment, two clamping plate have the relative clamping surface of step configuration, thereby the workpiece clamp of permission different in width is between the different clamping parts of clamping plate.

Workbench also can have the plug-in unit between clamping plate so that special-shaped clamping surface is provided, in order to clamping such as bar, pipe or pipe fitting etc.By means of the rectangular plate shape plug-in unit between the clamping part of two clamping plate, workbench can provide a flat basically working surface.

Referring now to accompanying drawing, most preferred embodiment of the present invention is described by way of example, wherein:

Fig. 1 is the end-view of the workbench of first embodiment according to the present invention;

Fig. 2 is the longitudinal section along II among Fig. 1-workbench that the II line is got;

Fig. 3 is a local enlarged side view, shows in detail the adjustable dog of the clamping part of one of them clamping plate that limits workbench;

Fig. 4 is the end-view of workbench second embodiment;

Fig. 5 is the enlarged detail of Fig. 4;

Fig. 6 is the end-view of workbench the 3rd embodiment;

Fig. 7 is the side view of workbench shown in Figure 6;

Fig. 8 and 9 shows the form that can be used for the inserted block of the clamping plate of workbench shown in Fig. 6 and 7.

Fig. 1 in the accompanying drawing-3 shows a work long table, and its height can make it as workbench or buck.The bench-top of workbench is limited by relative clamping plate 2,4.Clamping plate 2,4 all are installed on rigidly gets each upper end of supporting that support 6,8 forms, and each support all has the relative supporting leg 6a that is positioned at the workbench opposite end, 8a.Two supports 6,8 are connected by hinge so that rotate around an axis 10, axis 10 is along the workbench longitudinal extension and be positioned at the bench-top below, like this, the weight of each clamping plate 2,4 adds the weight of the workpiece that is clamped by clamping plate and just makes support 6 by any downward pressure that the user puts on workpiece and/or bench-top, one of 8 lower end with respect to another around axis 10 towards outer displacement and support 6,2,4 one on the clamping plate of 8 upper ends with respect to another to intrinsic displacement, thereby workpiece is clamped.Clamping action power preferably need not to be connected in clamping plate screwed mechanism from clamping action power.In the embodiment shown, be positioned at roller on two supporting leg lower ends of one of them support (as directed support 6) or roller 12 and make the more easy to outer displacement relatively of two support 6,8 lower ends.In order to prevent that workbench is whole and move (this moving is undesirable when working) on workbench, on the lower end of the supporting leg of another support, leg 14 is housed, leg 14 can be grabbed on the ground tightly in case stop bit moves.When the lower end of support 6 by its roller 12 during to outer displacement, the support 8 just pin joint between two supports rotates or swings, in order to hold this motion, leg 14 is convex preferably, this shape will allow support 8 to wave on the ground and can be along ground displacement.For firm engagement is provided between leg 14 and ground, leg 14 is preferably made by the artificial rubber with great friction coefficient, and is had and can prevent the ribbed surfaces or other compromise face that move along ground.

In the embodiment shown, two supports 6,8 is hinged at vertical hinge axes 10 places, this axis passes the leg 8a of support 8, extend by means of each supporting leg 6a from support 6 and connected by screw or the rigidity pole 16 that is riveted on the respective leg of support 8 constitutes hinged by independent one screw that limits hinge axes 10 or rivet.Pole 16 is fixedly mounted on the supporting leg 6a of support 6.

In this structure, the clamping plate 2 relevant with support 6 comprise a platform 18 that enough width are arranged forming the big working surface of workbench, clamping plate 4 relative narrower relevant with support 8.Clamping plate 4 comprise one with platform 18 with high stop portions 20, the vertical longitudinal edge 20a of stop portions 20 reclines with the relative longitudinal edge 18a of platform 18 when two supports 6,8 fully become the splayed positions.One fixes to clamp part 22 is installed in protruding and being positioned at more than the height of the working surface that is limited by platform 18 than edge 20a slightly on the stop portions 20.An adjustable clamping part 24 that is the elongate rod form is installed on the platform 18 in such a way, and promptly the edge 18a with respect to platform can be locked in a chosen position.Clamping part 24 has formed the part of clamping plate 4 so that move with support 6 on effect, enters a chosen position but can adjust on platform 18.In this mode, along with the lower end of support 6,8 is separately rotated and two clamping plate 2,4 moved place that the workpiece between the clamping part 22,24 just can be clamped by clamping part on the platform 18 around axis.

Adjustable clamping part 24 is mounted to and can moves on the width of platform 18, so that be locked in a chosen position with respect to platform 18, adjustable clamping part 24 preferably can be done stepless adjustment, so that the interval between two clamping parts 22,24 is adjustable to the suitable large-scale width of the workpiece.In most preferred embodiment, be parallel to platform 18 and form an easy installation system for adjustable clamping part 24 support 6 being hinged on pole 16 on the support 8 on the two ends of support 6 and by means of this.The two supports of adjustable clamping part 24 is on carriage 26, and carriage 26 is installed into and can slides along adjacent pole 16.Carriage 26 comprises an opening 28 that is used to hold pole 16, so that carriage 26 can slide along pole 16.The degree of depth of opening 28 is slightly larger than the degree of depth of pole 16, like this when carriage is approximately perpendicular to the axis of pole 16 with the plane of opening 28 and is orientated, carriage 26 just can slide along pole 16, but as shown in Figure 3 when carriage 26 tilts, the upper and lower edge 28a of opening 28 and 28b just with the edge of wedging pole 16, so just are stuck in carriage 26 and be locked in the position on the pole 16.Tilting and latched position, adjustable clamping part 24 is arranged essentially parallel to platform 18.In order to obtain the higher power of blocking, the thickness that carriage limits the part of opening 28 is maintained at minimum.Described installation system allows clamping part 24 to do stepless basically adjustment on the width of platform 18, provides a better anchoring force for the adjustable clamping part 24 that is in its chosen position simultaneously.Although adjustable clamping part 24 can be mounted to parallel move and its edge is total keeps parallel with edge 18a on platform 18, selecting clamping part also can be mounted to as another kind allows oblique motion and its edge tilt in edge 18a, so just allow thickness to have an object that increases or reduce to be clipped between two clamping parts 22,24.Width by making the opening 28 on the carriage 26 can obtain this effect greater than the thickness of pole 16, thereby allows adjustable clamping part 24 to tilt at platform 18.

For a workpiece is clamped on the workbench, earlier workpiece is placed on the platform 18, one surface is leaned against fix to clamp on the part 22, and move adjustable clamping part 26 towards another surface of workpiece.Catch platform 18 then and promote with the edge 18a that is reclining and the 20a of two clamping plate separately slightly and move adjustable clamping part 24 and make it adjacently situated surfaces secure engagement with workpiece, shown in the structure, adjustable clamping part 24 should move at last and the lifting slightly of platform 18 can be finished simultaneously by the user.When removing lifting force, the downward power that acts on the platform 18 just makes one on clamping plate move towards another, thereby workpiece is clipped between the clamping part 22,24 securely.On workpiece, just can saw then, dig or operation such as boring, and the user has also increased the clamping force that is applied on the workpiece with the trend that his knee is placed on the workbench.Then, for great majority operations, will provide enough clamping forces from clamping action power by what the deadweight of workbench itself provided.Actual clamping force depends on the weight of workbench and workpiece and the relative distance between pin joint 10 and clamping plate 2,4 and pin joint 10 and the two stands lower end.

By means of simple linkwork, described workbench can provide one effectively from clamping action power on the length of workbench, and the production cost of this linkwork is low, and does not need complicated threaded connector between two clamping plate.Be positioned near the supporting leg 6a of another support 6 by making support 8 rotate the lower end that makes its supporting leg 8a around axis 10, collapsible workbench is integral the long-pending structure that reduces and is convenient to store.

The marginal portion 18a of platform 18 can comprise the triangular incision of a series of different sizes, and is vertical orientated promptly perpendicular to the pipe fitting or the pipe of platform surface to hold, and makes it to be clipped on the stop portions 22.

Workbench also can have the ability of two plug-in units between the clamping part 22,24 with the raising workbench that be positioned at.Plug-in unit can comprise one or more in following.

When fixing to clamp the rectangular plate shape plug-in unit that part 22 and adjustable clamping part 24 can be between them when being in their farthest positions, so that form a continuous substantially surface between the outward flange of two clamping parts, this continuous surface can form a platform that supplies operator's safety to stand.

Can place on the platform the detachable jaw shape plug-in unit between two clamping parts, have profiled inner surface or nicked inner surface, so that clamp and locate certain objects, for example be parallel to pipe or the pipeline that platform extends or from the vertically extending pipe of platform (as sewage pipe), its lower end is bearing on the platform along workbench.

The difference of embodiment shown in embodiment shown in the Figure 4 and 5 and Fig. 1-3 is that the platform 18 of clamping plate 2 itself is made to is adjustable, has so just saved relevant adjustable clamping part 24.Platform 18 is installed into and can moves on upper support 30, and upper support 30 forms the part of support 6 and extends between two supporting legs of support 6.The edge is by carriage 32 supportings within it for platform 18, and carriage 32 is installed into and can slides along the pole 16 that is positioned at the workbench two ends.Top edge along pole 16 is processed with ratchet 34, and each carriage 32 all supports a locking pawl 36, and ratchet 36 rotates biasing and meshes with ratchet 34 under the gravity effect.In this embodiment, direct clamping work pieces between the opposite edges 20a of the stop portions 20 of the edge of platform 18a and clamping plate 4, in this embodiment, stop portions 20 forms the clamping part of clamping plate 4.The orientation of ratchet 34 allows clamping plate 2 to move and need not to discharge ratchet 36 towards clamping plate 4, thereby a workpiece is clamped between clamped edge 18a and the 20a.The release of ratchet 36 is so that allow clamping plate 2 to realize along oppositely moving by means of handle 38, and handle 38 is integral with ratchet 36 and can moves up and makes it to break away from engagement with ratchet 34 to rotate ratchet.In operation, open clamping plate 2 and 4 slightly along with being applied to the less power that makes progress on the pole 16, a workpiece is placed between two clamping plate, it is aforesaid from clamping action to allow to discharge power upwards then.

This embodiment provides a big expedite working surface for workbench.Can make clamped edge 18a, 20a for special-shaped with level or vertically hold pipe or pipeline.

Embodiment shown in Fig. 6-9 has utilized clamping principle certainly same as the previously described embodiments.In this embodiment, two clamping plate 40 are symmetrical basically, and the pin joint 10 between two supports 6 and 8 is also located symmetrically and is in the central longitudinal plane of workbench.The pole 42,44 of the inside orientation of a rigidity of each outrigger support of two supports 6,8, it is by an independent screw or rivet and screw connects or be riveted on the pole on the relative supporting leg of another support, thereby defines pin joint 10.Be processed with an outside step profile on each clamping plate 40, it is in the face of the step profile of another clamping plate.Such two clamping plate just provide a series of relative work mounting s and the clamping surface 40a with different in width, 40b, thus can hold the workpiece of multiple width.In order to use workbench, workpiece is placed between two clamping plate 40 symmetrically.Promote workbench slightly so that thereby two clamping plate 40 open around pin joint to be made on the area supported 40a of workpiece below dropping on, when discharging clamping plate 40, just workpiece is clamped in securely between the adjacent vertical clamping surface 40b.

Clamping plate 40 can form by the plastics with suitable intensity and durability are integrally moulded.Although compare with previous embodiment, the clamping plate configuration is not so general, and it still can clamp the workpiece of multiple different in width.It is contemplated that and compare the cost manufacturing that present embodiment can be lower with previous embodiment.

The present embodiment of workbench can adopt multiple different plug-in unit to improve the ability of workbench, and these plug-in units comprise:

One rectangular slab 46, its size and thickness can make it to be clipped between the uppermost steps of two clamping plate 40, thereby concordant with the upper surface of each clamping plate and provide a flat working surface, this surface also to can be used as the surface of standing for a user;

Metal splint 48(Fig. 8 that folder gets on), it by striking out similar profile in case the thin metal that on bottom plate, slides make, and can have the zigzag clamping surface to improve clamping action, these clamping plate that press from both sides up provide a very hard and durable working surface, and just in case can change under the situation about damaging;

Clamping plate 50(Fig. 9 of getting on of folder), for example it can be molded by plastics, and have a lower surface that matches with the surface of step clamping plate profile and have relative clamping surface, its shape permission level or vertically clamp rod member or pipe.

In this embodiment, with previous embodiments, clamping force is that the deadweight by workbench itself adds that the weight of workpiece and any user are applied to downward pressure decision on workbench or the workpiece.It also depends on the lever leverage that arrives the relative length generation of distance between the leg of supporting leg because of clamping region to hinge axes and hinge axes.With two supports 6, open between the clamping plate that 8 one produce with respect to another inside moving mobile degree be enough to be contained in the narrowest and the wideest between a workpiece of any width, the narrowest is clipped between two innermost clamping surfaces, the wideest is clipped between two outmost clamping surfaces, in a concrete instance, workbench can be designed to clamp the workpiece of the about 30mm of minimum thickness.

Described herein from clamping table clamping work pieces and the clamping device that need not to add as D-clamp and G-clamp, does not just hinder workpiece so effectively.Clamp operation can be fast and is realized easily and do not relate to and use expensive thread mechanism and similar means.The scope of application that plug-in unit and simple rectangular plate shape plug-in unit can be widened workbench, when the usual shape of clamping plate can not provide the flat-top workbench, the rectangular plate shape plug-in unit can convert this flat-top workbench fast to.

Embodiment just describes by way of example, can make remodeling within the scope of the present invention.

Claims (14)

1, a kind of device that can releasably clamp a workpiece, comprise a pair of relative clamping jaws, the device that it is characterized in that such connecting cleat, the downward power on the clamping plate of promptly acting on make to produce between the clamping plate and relatively move, thus with a workpiece clamp between them.

2, device according to claim 1, the device that it is characterized in that connecting cleat comprises two hinged supportings that corresponding clamping plate in two clamping plate respectively are installed, each supporting all has one and is suitable for the lower end of seat on area supported, hinged between the supporting is like this, promptly under the effect of a power downward vertically that applies by deadweight and/or workpiece and/or the user of device, the lower end of supporting can one with respect to another to outer displacement, thereby make one on clamping plate move and enter clamped position towards another.

3, device according to claim 2 is characterized in that the lower end of one of them supporting comprises roller means, so that this supporting is moved along area supported.

4, device according to claim 2 is characterized in that device forms a workbench, its supporting be suitable for seat on the ground and wherein at least one clamping plate form a working surface of workbench.

5, device according to claim 4, the lower end that it is characterized in that wherein a supporting comprises the roller means along ground surface, and the lower end of another supporting comprises leg device, its configuration makes it to stop being displaced sideways along ground.

6, device according to claim 5 is characterized in that leg device is a convex, so that described another supporting swing on the ground during clamping plate move into and shift out clamped position.

7, according to the described device of arbitrary claim in the claim 4 to 6, it is characterized in that one of them clamping plate comprises an adjustable clamping part, it is adjustable to the chosen distance from the relative clamping part of another clamping plate.

8, device according to claim 7 is characterized in that described clamping plate define one of workbench big working surface, and described adjustable clamping part can move on working surface and enters a chosen position.

9, device according to claim 8, it is characterized in that the erecting device in order to the adjustable clamping part of such installation, promptly clamping part can be adjusted basically steplessly and enter one and select clamped position and can take the orientation that tilts with respect to the relative clamping part of another clamping plate.

10, according to the described device of arbitrary claim in the claim 4 to 6, it is characterized in that one of them clamping plate comprises that a clamping part to another clamping plate is the clamping part of relative relation, and described device further comprises the device that described clamping plate are installed slidably, its clamping part is positioned on a chosen distance of the relative clamping part of another clamping plate and described clamping plate is locked in device on its chosen position.

11, device according to claim 10 is characterized in that locking device comprises a ratchet and detent mechanism, and ratchet can be freed to allow the clamping part fast moving of described clamping plate towards another clamping plate with ratchet.

12, according to the described device of arbitrary claim in the claim 4 to 6, it is characterized in that each clamping plate has the clamping surface of a step configuration, so that one group of clamping part to be provided, the relative clamping part of such two clamping plate is separated by different width.

13, according to the described device of arbitrary claim in the claim 4 to 11, it is characterized in that each supporting comprises a support, clamping plate are installed in the upper end of respective holder, and two supports are hinged by means of the pole that is parallel to the working surface extension between support usually, and pole and one of them support are rigidly connected and are articulated on another support.

14, clamping device according to claim 10, it is characterized in that each supporting comprises a support, clamping plate are installed in the upper end of respective holder, and two supports are hinged by means of the pole that is parallel to the working surface extension between support usually, pole and one of them support are rigidly connected and are articulated on another support, the device that wherein is used for installing slidably described clamping plate comprises the carriage that is installed on the described clamping plate and can slides along pole, and locking device is steerable so that carriage can releasably be locked in latched position along pole.

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