JP3094617U - Toggle lever clamp device - Google Patents

Abstract

(57) Abstract: A toggle lever clamp device for clamping a workpiece to a support frame. The apparatus includes a box-shaped head in which a clamp arm pivots between open and closed positions to release and lock a workpiece. The clamp arm is connected to the actuator by a toggle lever mechanism having a stop center state. The toggle lever mechanism includes a resilient bufferable link that is axially damped to some extent continuously after reaching the dead center state and deflected in a control mode by the facing stopper means on the clamp arm.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention is a toggle lever clamp device for locking a work piece or a work piece. To hold or fasten metal plates or pieces of metal, especially those used in car body structures Of equipment. However, the clamping device according to the present invention can be used for other different applications. Noh.

[0002]

[Prior art]

  Toggle levers commonly used to hold work pieces against a support frame Clamping devices include, for example, U.S. Pat. Nos. 4,445,676 and 4,921,2. No. 33, No. 4,923,184, No. 5,165,670, European Patent No. 1 ． No. 025.950 and No. 0.268.176 and are widely known. ing.

[0003]   Generally, clamp devices of the type described above have a clamp arm that pivots and operates. Freely toggle lever mechanism for pneumatic, electric or other type of linear actuator Box type that is connected to the data and tilts between the open position and the closed position to lock the work piece Including the head.

[0004]   The clamp arm normally uses a toggle lever mechanism to move the linear actuator. It is connected to a riding rod. This toggle lever mechanism is And the intermediate connecting ring hinged to the sliding rod of the linear actuator. Including ku.

[0005]   In this type of clamping device, the axial movement of the linear actuator is usually rigid. It is transmitted to the clamp arm by the sex connection link. Rigid connecting link during movement Must pass through the dead center state of the toggle lever mechanism, The articulation between the sliding rod and the clamp arm of the linear actuator is Beyond that, it becomes an irreversible appearance.

[0006]   In fact, in order to overcome the dead center position, the clamping device is moved to the clamping position. When moving, it is necessary to generate a relatively large force. In addition, reverse movement or opening Required to move the clamping device to the closed position for release movement A force much larger than that needs to be applied again. Or turning the clamp lever Sliding rods and connections of linear actuators to release rolling Add axial thrust by sharply impacting the outside to move the link backwards. Need to

[0007]   A rigid connecting link is used for the toggle connection between the clamp arm and the linear actuator. In addition to actuating the clamping device for opening and closing The large forces that must be applied place considerable strain on the various parts of the device. this This leads to excessive wear of moving parts, resulting in periodic maintenance or replacement. Need.

[0008]   In addition to potential damage or irregular operation of the clamping device, replacement of consumable parts is time consuming. Consumption and cost will be added.

[0009]   To partially eliminate these problems, U.S. Pat. No. 4,445,676 , A connecting link to two hinges that are connected by an intermediate elastic arm that can be bent sideways. A particularly long T-shaped spacer to divide the hinge to allow relative movement between the two hinge axes. Tol including an elastically yieldable connecting link formed by the lit The use of the glue lever mechanism is suggested.

[0010]   On the other hand, the use of a simple elastic bufferable connecting link is not Solves the problems caused by the strong stress and wear of, but on the other hand causes other problems, And the accidental release of the clamped work piece due to the presence of external forces on the clamp arm. Optimal irreversible clamping (tightening) of the clamping device with risk of removal and release It creates the inconvenience of making it impossible.

[0011]   In addition to the inability to maintain a rigid clamp on the workpiece, the use of simple elastic connecting links For repeated installation, the connecting link may be damaged or destroyed under strong clamping force, Including the risk of rendering the entire installation useless.

[0012]   For this purpose, during some tests, the elastic bufferable link of the toggle lever mechanism Tightening torque that is subject to deviation or distortion, and one side of the stop center point Accurate calculation in relation to the stress that the system experiences when passing from one side to the other Or the work piece to be clamped has a thickness slightly larger than intended. If any damage to the connecting link occurs, the irreversibility and function of the clamping device Be in danger.

[0013]   As a result, it is irreversible in a way that gives the clamping device reliability and safety. Further improvements on conventional clamping devices by providing a final movement to the clamping device. And there is a need for.

[0014]

[Prior art]

  U.S. Pat. Nos. 4,445,676, 4,921,233, 4,92 No. 3,184, No. 5,165,670, European Utility Model Registration No. 1.025.9 No. 50 and No. 0.268.176

[0015]

[Problems to be solved by the device]

  Therefore, the problem of the present invention is that it is structurally simple and in a controlled manner, Elastic cushioning that enables the clamping device to operate with high safety and reliability To provide a clamping device of the type described above with a possible toggle connection link. It

[0016]   Furthermore, the object of the present invention is to control the axial compression of the connecting link and at the same time to clamp the device. Different clamping movements that allow irreversible final movements in stationary clamping conditions To provide a clamping device of the type described above having a toggle lever mechanism that enables And in.

[0017]   Another object of the present invention is to provide a strong force for locking a work piece with a single and inexpensive structure. An ammunition designed to significantly enhance the safety and reliability of the clamping device, such as securing Clamping device of the type described above with a toggle lever mechanism including a shock-absorbable connecting link Is to provide storage.

[0018]

[Means for Solving the Problems]

  The above object is achieved by the invention of claim 1 described in the scope of utility model registration. . Specifically, the toggle lever clamp device according to the present invention is a frame for supporting a workpiece. A toggle lever clamp device for fastening to   A box-shaped head with a long axis,   -One end of the box-shaped head is rotatably connected to a pivot shaft to rotate between open and closed positions. Clamp arm that locks and releases the workpiece by   A linear actuator at the other end of the box head, and   A toggle operably connected between the actuator and the clamp arm Including a lever mechanism,   The toggle lever mechanism is elastically bufferable with a long axis extending between the hinge ends. ly yieldable) connecting link and having a dead center state, said connecting link Clamps beyond the stop center state and keeps the clamp arm fastened to the workpiece In the toggle lever clamp device,   The elastic shock-absorbing connecting link reaches the stop center state of the toggle lever mechanism. Spaced apart of the structure to prevent axial compression of the connecting link after overcoming It is characterized by including topper means.

[0019]   According to another feature of the invention, a front for preventing axial compression of the connecting link. The stopper means is the toggle lever machine in the closed position of the clamp arm. This is a configuration that enables the angular displacement of the connecting link beyond the stationary center state of the frame.

[0020]   In a preferred form, said stopper means are face-to-face and inclined or branched contact Characterized in that it includes first and second surface means arranged facing each other on the surface.

[0021]   In a preferred form, the stopper means is axial from the hinge end of the connecting link. Characterized in that it includes first and second stopper members extending in the opposite direction and facing each other. It

[0022]   In a preferred form, one of said stopper members is lateral from the front end of that stopper member. It is characterized in that it includes a contact element partially protruding in the cutting direction.

[0023]   In another form, one of the stopper means is lateral from the front end of the stopper member. It is characterized in that it includes first and second contact elements partially protruding in the cutting direction.

[0024]   In a preferred form, the first and second contact elements are in the form of contact members having rounded peripheral surfaces. It is characterized by being in a state.

[0025]   In another aspect, the first and second contact elements include a cylindrical member. It

[0026]   In another aspect, the contact element comprises a first contact member having a first diameter, and A second contact member having a second diameter smaller than the first contact member. .

[0027]   In a preferred form, the first and second contact members are relative to the major axis of the connecting link. It is characterized by being in the same plane arranged orthogonally.

[0028]   In another aspect, the contact elements are first and second cylindrical contacts having the same diameter. It is characterized by including a member.

[0029]   In a preferred embodiment, the major axes of the first and second contact members are aligned with the major axis of the connecting link. It is characterized by being in a plane inclined with respect to the plane.

[0030]   In a preferred form, the first and second contact elements are seated at the front end of the stopper member. It is characterized by being installed.

[0031]   In a preferred form, the connecting links are shaped steels arranged side by side. It is characterized by being a plate.

[0032]   In a preferred form, each of the shaped steel plates of the connecting link is a hinge. An end portion, first and second stopper members extending parallel to the long axis of the connecting link, and And an elastic cushionable side arm for connecting the ends of the shaped steel plate It is characterized by including.

[0033]   In a preferred form, the side arm is an arm form in which an arch is drawn inward. Is characterized by.

[0034]   The stopper member compresses the connecting link in the axial direction after reaching the stop center point. Allows for continuous control of the It enables continuous control of the angular deviation of the connecting links.

[0035]   Surface contact means arranged on the inclined or branched surface of the stopper member arranged facing Is the relaxation of the initial elastic damping movement of the connecting link when the clamping device is closed. Allows for summing and control, which allows the stop center position to be Allow to pass through.

[0036]   According to the present invention, after passing through the stop center position, the movement of the connecting link is The surface contacting means of the stopper member is moved to the final stop position where the surface contact means moves relatively on the inclined surface. It continues in a predetermined control mode until the connecting link reaches, Of the connecting link is made rigid and axial compression of the connecting link is prevented, and Allows for angular deviation. As a result, it cannot be obtained with other conventional clamping devices. Reverse final movements and controlled workpiece locking movements are possible.

[0037]   In this way, the safety and reliability of the clamping device of the present invention are compatible. It has improved considerably.

[0038]

[Embodiment of device]

  FIG. 1 shows an overall view of the clamp device 10. The clamping device 10 has two side-by-side arrangements. Including a box-shaped head portion 11 formed by arranged shell members, The clamp arm 12 is pivotally attached to the pivot shaft 13 connected as shown in FIG. From the raised position or open position indicated by, the clamp arm 12 Or to the lowered or closed position that locks the work piece P to the support frame 14. Allows rotation.

[0039]   The clamp arm 12 is, for example, a linear actuator such as a hydraulic or pneumatic cylinder. The hinge is fixed to the actuator 15 between the clamp arm 12 and the actuator 15. With a three-point articulation system or toggle lever mechanism that includes the interlocking link 19. And is operably connected.

[0040]   More specifically, in the embodiment shown in FIG. The binder 15 is hingedly connected to one end of an elastic shock-absorbing connecting link 19 with reference numeral 20. A piston member 16 having a piston rod 17 with a fork 18 Mu. The other end of the connecting link 19 is integrated with the clamp lever 12 by the pivot shaft 13. The crank lever 21 is hingedly fastened at reference numeral 22 to the crank lever 21. Pi Fork 18 of connecting rod 17, connecting link 19, and crank lever 21 Forms a three-point articulating system, or toggle lever with a stop center condition It This system works together with the cylinder 15 in a non-actuated state to overcome the stop center state. Becomes irreversible, and the clamp arm 12 is attached to the workpiece P as shown in FIG. Keep it clamped. Reference numeral 23 indicates a guide roller of the fork 18. , Reference numeral 24, on the other hand, stops the fork 18 and with respect to the clamp arm 12. At the front end of the guide roller 23 to reduce noise when reaching the stop position Shows a pad.

[0041]   According to an overall feature of the invention, the toggle lever mechanism controls and limits axial compression. Including an elastic shock-absorbing connecting link 19 with stop means designed for When the actuator is inactive and the clamp device is clamped, The toggle lever mechanism stops and the reaction force is smoothly overcome at the center point, and it is actually irreversible. To do so.

[0042]   According to the first form shown in FIG. 2 and by the enlarged illustrations in FIGS. 3 to 6, The connecting link 19 is connected to the two inwardly curved elastic shock-absorbing arc-shaped side arms 27. It thus comprises two hinged ends 25, 26 which are interconnected, and thus It enables axial compression and lateral displacement of the connecting link 19 described below.

[0043]   As shown in FIG. 2, the two separated and aligned long axes S of the connecting links 19 are provided. Whether the compression resistant stopper members 28 and 29 are hinge end portions 25 and 26 of the connecting link 19. Extend inward. The stopper member is, for example, in a stress-free state of the connecting link 19. It consists of two central arms whose front ends are slightly separated from each other. Allows the elastic compression of the connecting link 19 to be controlled upon closing.

[0044]   More specifically, as shown in FIG. 2, at the ends of the two stopper members 28 and 29, The facing flat surfaces 30 and 31 are connected to each other at the stop center point of the toggle lever mechanism. Slightly greater than or equal to the maximum elastic yield occurring at Slightly separated by a short length α of a few tenths of a millimeter, which is composed of between 1 and 0.4 mm is doing. Three points of the toggle lever mechanism, that is, points corresponding to the hinge shafts 22 and 20, The stop center point on the guide roller 23 is aligned with the long axis of the connecting link 19.

[0045]   Further, the front surfaces of the one or two stopper members 28, 29 are inclined by several degrees, Following the lateral displacement or distortion of the connecting link 19 during the closing movement of the clamp arm 12. , Allows differentiation and control of axial compression movements.

[0046]   The connecting link 19 may be suitably shaped and formed in a single piece, but preferably see FIG. A plurality of shaped plate members 19 'may be included as described further below.

[0047]   More specifically, as shown in the enlarged explanatory view of FIG. 3, the stopper members 28, 29 are One of them, for example, the stopper member 29, has a rectangular seat 34 at its front end, and the seat 34 has a A contact member 33 protruding from the front surface 31 of the topper member 29 is attached and the connecting member 33 is connected. A flat contact surface 33 'is formed on a surface of the link 19 orthogonal to the long axis S.

[0048]   The contact member 33 is press-fitted on the seat 34 or loosened by the stopper member 29. May be well supported.

[0049]   The other stopper member 28 faces the front surface 33 ′ of the contact member 33 as shown. And, for example, the front surface on a slightly inclined plane forming an angle β1 of 5 ° or 6 °. Terminated by 30 '. As described above, in the stress-free state of the connecting link 19, , The facing surfaces 30 'and 33' at the ends of the two stopper members 28 and 29 are of length α. Slightly apart from each other, firstly the axial direction of the connecting link 19 after the closing of the clamping device. Control of the elastic damping movement in the direction Excessive deformation of the elastic arm 27 connecting the two hinge ends 25, 26 of the connecting link 19 Avoid shape and potential fatigue failure.

[0050]   The angle β between the two faces 30 'and 33' of the stopper members 28, 29 and the minimum Since the values of the distance α are shown merely as examples, these values of the connecting link 19 are In relation to the shape and dimensions and elastic parameters, as well as the design of the entire clamp device And the lacking force or pressure exerted on the workpiece P. Should be calculated twice.

[0051]   As mentioned above, the stopper members 28 and 2 having a slightly inclined front surface. The presence of 9 differs from that of the elastic connecting link 19 during the closing process of the clamping device. It enables two different exercises. The connecting link 19 is, first of all, elastic in the axial direction. Buffering, which results in a relatively small thrust force, It is possible to overcome the above-mentioned problems, and to continue rigid behavior until it becomes completely closed. It This raises the clamp arm 12 or opens the clamp arm 12. Any potential external force acting on the clamp arm 12 to rotate it in the direction When it is countered (obstructed, canceled) by the axial rigidity obtained by the connecting link 19. In a sense, it is said that the actuator 15 is absolutely irreversible in the non-actuated state. Add features to the system. In this case, the reaction force on the clamp arm 12 is large. And increase reliably towards the shoulder 24, and after closing the clamping device the fork 1 Since the guide roller 23 of No. 8 contacts the shoulder 24, the two stopper members 28 And 29 arrive at a slightly inclined relative position and the fork of the piston rod 17 The hinge point 20 is urged by 18.

[0052]   The above explanation is for the continuous position of the stopper members 28, 29 when the clamp device is closed. It will be clearly understood from the continuous phase diagrams of FIGS. In particular, FIG. Indicates the tilted state of the connecting link 19 immediately before reaching the stop center state of the link device. However, in this case, the long axis S of the connecting link 19 is, for example, the central axis of the connecting link 19. Equal to or equal to the angle β1 between the front faces 30 'and 33' of the par members 28 and 29. Angle slightly wider than the above, the alignment condition described above for the three points of the linkage Form an angle α1 with the line R.

[0053]   In this connection, the two front faces 30 'and 33' of the two stopper members are As detailed in 3, the distance α slightly separates from each other.

[0054]   When closed, the shaft S of the connecting link 19 is linked during continuous rotation of the connecting link 19. As shown in FIG. 4, when the straight line R corresponding to the three-point aligned state of The two front faces 30 'and 33' of the topper members 28 and 29 are slightly relative to each other. , The distance or space α between them disappears. In such a state, The pump arm 12 or a part connected to the clamp arm 12 contacts the workpiece P. Just touch it and still apply the force needed to lock it against the support frame 14. Not granted.

[0055]   As shown in FIGS. 5 and 6, the front faces 30 'of the two stopper members 28,29. And 33 ', the elastic loosening of the connecting link 19 controlled and limited appropriately by the contact between The rotation of the connecting link 19 due to the impact movement causes the rigid connecting link of the conventional clamp device to rotate. Wider angle than possible due to, for example, connecting links and the entire clamping device Depending on the characteristics of, it is carried out continuously with an angle α2 corresponding to 4 ° or 5 °. It

[0056]   The final clamped state of the connecting link 19 and the two stopper members 28 and 29 The relative positions of the front faces 30 'and 33' of the are shown in the enlarged illustration of FIG. Figure 5 As can be seen from the above, elastic bending of the side arm 27 of the connecting link 19 and two The resulting relative rotation between the contact surfaces of the stopper members 28 and 29 of the The long axis S of the connecting link 19 forms a positive angle α2 with the straight line R. That is, two strikes The lid members 28, 29 are no longer aligned and are slightly inclined with respect to each other.

[0057]   Therefore, the clamp arm 12 is rotated upward by a strong external force or is released. When rotating toward the stopper member 28 due to elastic deformation of the connecting link 19. And a small angle β2 is still formed between the two front faces 30 'and 33' of 29 Therefore, the front surface 33 ′ of the stopper member 29 and the front surface 30 ′ of the other arm member 28 are Make intimate contact. The two stopper members 28 and 29 rotate slightly relative to each other. , Forming an angle α3 greater than α2 which makes the system irreversible. In this way, the connecting link 19 behaves like a rigid type.

[0058]   This activates a cylinder 15, or other type of control device, to reverse its movement. The absolute irreversibility of the system can be guaranteed only by

[0059]   Another form of the elastic connecting link 19 for the clamping device according to the present invention is shown in FIG. 12 and the same reference numbers as in the previous figures indicate corresponding or equivalent parts Is used for.

[0060]   As shown in FIG. 7, the connecting link 19 extends axially from the hinge ends 25,26. The existing stopper members 28 and 29 are included in the same manner as the above embodiment. Two stopper members 2 The opposite ends of 8, 29 include contact front means 30 ', 33' as in the previous embodiment. contact The frontal means 30 'and 33' are still in the unstressed state of the connecting link 19, for example 2 Separated from each other by a gap α of / 10 mm or 3/10 mm, for example For example, an angle β1 of 5 ° or 6 ° is formed.

[0061]   One of the stopper members 28, 29 is connected to the first contact element 35 and the first contact element 35 which is spaced apart from the first contact element 35. A contact surface provided by two contact elements 36, each preferably in a semi-circular seat Each of the pins is axially arranged from the front end of the stopper member 29. It projects in the direction.

[0062]   In this case, the contact front surface 33 'is provided by an imaginary surface which contacts the contact elements 35 and 36. Be served.

[0063]   In the form of FIGS. 9 to 11, the contact elements 35, 36 have a first circle with a first diameter. A tubular element 35 and a second cylindrical element 3 having a second diameter smaller than the first diameter 6 and the major axes of both contact elements 34, 36 are perpendicular to the major axis of the stopper member 29. Within the plane.

[0064]   The contact elements 35 and 36 are press fit into their respective seats at the front end of the stopper member 29. Mounted or loosely supported between both sides of the fork 18 or the clamp lever 21. it can.

[0065]   As mentioned above, having facing or facing contact fronts or contact front means The use of stopper members 28 and 29 allows the elastic connecting link 19 to perform two movements. To do. In fact, during the closing process of the clamping device, the control of the elastic damping is in the axial direction. It is possible for the connecting link 19, which is due to the relatively small thrust force. It enables to overcome the stop center point of the glue lever mechanism. Furthermore, the connection link 19 is the After reaching the final closed position, it allows the subsequent rigid behavior of the connecting link 19 Give the system absolute irreversibility.

[0066]   See the set of Figures 9 to 11 showing the continuous process compared to Figures 3 to 6. It becomes clear by illuminating.

[0067]   According to another embodiment of the present invention shown in FIG. 12, the axial compression of the connecting link 19 is reduced. The limiting means are first and second cylindrical contact elements 37 and 3 having the same diameter. 8, the major axis of which lies in a plane parallel to the contact surface 33 '.

[0068]   As shown in the accompanying drawings and understood from the above description, the clans according to the invention are The clamping device is an elastic shock-absorbing toggle between the clamp arm and the movable rod of the actuator. Including the lever mechanism, the toggle lever mechanism applies any excess stress on the moving parts. The clamping device can be opened and closed without the need for wear and malfunction problems. Accident of the clamping device by the actuator in the reduced and at the same time inactive state Allows an irreversible final clamping movement, such as blocking manual release.

[0069]   As will be understood from the above description with reference to the accompanying drawings by way of example, Other modifications are possible without departing from the scope of the patent registration request.

[Brief description of drawings]

FIG. 1 shows an overall view of a clamping device according to the present invention, with the half of the box-shaped head removed to show the internal mechanism.

FIG. 2 is an enlarged view of a connecting link of a toggle lever mechanism according to the present invention.

3 is an enlarged explanatory view showing one operating state of the clamp device of FIG. 1. FIG.

FIG. 4 is an enlarged explanatory view showing another operating state of the clamp device of FIG. 1.

5 is an enlarged explanatory view showing another operating state of the clamp device of FIG. 1. FIG.

6 is an enlarged explanatory view showing another operating state of the clamp device of FIG. 1. FIG.

FIG. 7 is a view showing a second form of the connection link according to the present invention.

8 is a cross-sectional view taken along line 8-8 of FIG.

FIG. 9 is an enlarged explanatory view of FIG. 8 in one operating state.

FIG. 10 is an enlarged explanatory diagram of FIG. 8 in another operating state.

FIG. 11 is an enlarged explanatory view of FIG. 8 in another operating state.

FIG. 12 is an enlarged explanatory diagram of FIG. 8 in another operating state.

[Explanation of symbols]

10 ... Clamping device 11 ... Box head 12 ... Clamp arm 14 ... Support frame 15: Linear actuator (cylinder) 16 ... Piston member 18 ... Fork 19 ... Connection link 25, 26 ... hinge end 27 ... Side arm 28, 29 ... Stopper member 33 ... Contact element or contact member 30 ', 33' ... Front or surface means or contact surface 35, 36, 37, 38 ... Contact element

Claims (16)

[Scope of utility model registration request] 1. A box-shaped head (11) having a long axis, and a work piece (rotatably connected to a pivot shaft (13) at one end of the box-shaped head (11) and rotated between open and closed positions ( A clamp arm (12) for locking and releasing P), a linear actuator (1) at the other end of the box head (11)
5), and-including a toggle lever mechanism (18, 19, 21) operably connected between the actuator (15) and the clamp arm (12), the toggle lever mechanism comprising a hinge end (25, 26). ) Includes a resilient cushionable connecting link (19) having a long axis between them and has a dead center condition, said connecting link (19) crossing said dead center condition and moving said clamp arm (12) to a workpiece (P). In the toggle lever clamp device for fastening the workpiece (P) to the support frame (14), the elastic shock-absorbable connecting link (19) reaches the stop center state of the toggle lever mechanism. Toggle, characterized in that it includes mutually spaced stop means (28, 29) configured to prevent axial compression of said connecting link (19) after being overcome. Lever clamping device. 2. The stopper means (28, 29) enables angular displacement of the connecting link (19) beyond the stop center state of the toggle lever mechanism in the closed position of the clamp arm (12). The toggle lever clamp device according to claim 1, wherein 3. The stopper means (28,29) comprises first and second surface means (30 ', 33') facing and facing each other on the inclined contact surface.
A toggle lever clamp device according to claim 1. 4. The stopper means (28, 29) includes first and second stopper members extending axially from the hinge ends (25, 26) of the connecting link (19) and facing each other. The toggle lever clamp device according to claim 3, characterized in that 5. One of said stopper members (28, 29) (29) is characterized in that it comprises a contact element (33) partly protruding in a direction transverse to the front end of said stopper member (29). A toggle lever clamp device according to claim 4. 6. One of said stopper means (28, 29) (29) has first and second contact elements (35, 35) protruding partly in a direction transverse to the front end of said stopper member (29).
36,37,38).
Toggle lever clamp device by. 7. First and second contact elements (35, 36,
37. The toggle lever clamping device according to claim 6, characterized in that (37, 38) is in the form of a contact member having a rounded peripheral surface. 8. The first and second contact elements (35, 36,
37. The toggle lever clamping device according to claim 7, characterized in that 37, 38) comprises a cylindrical member. 9. The contact element comprises a first contact member (35) having a first diameter and a second contact member (36) having a second diameter smaller than the first contact member (35). The toggle lever clamp device according to claim 8. 10. First and second contact members (35, 3)
10. Toggle lever clamping device according to claim 9, characterized in that 6) lies in the same plane arranged orthogonal to the long axis of the connecting link (19). 11. A toggle lever clamping device according to claim 8, characterized in that said contact element comprises first and second cylindrical contact members (37, 38) having the same diameter. 12. First and second contact members (37, 3)
8. The long axis of 8) lies in a plane inclined with respect to the long axis of the connecting link (19).
Toggle lever clamp device by 1. 13. First and second contact elements (35, 3)
6. Toggle lever clamping device according to claim 6, characterized in that 6, 37, 38) are mounted on the seat at the front end of the stopper member (28, 29). 14. Toggle lever clamping device according to claim 1, characterized in that the connecting links (19) are shaped steel plates (19 ') arranged side by side. 15. The hinged ends (25, 2) of each of the shaped steel plates (19 ') of the connecting link (19).
6), first and second stopper members (28, 29) extending parallel to the long axis of the connecting link (19), and ends (25, 2) of the shaped steel plate (19 ').
6) Elastically bufferable side arm (27) for connecting
15. The toggle lever clamp device according to claim 14, comprising: 16. The side arm (27) is in the shape of an arm that arches inward.
Toggle lever clamp device by.