Clamp having a rotatable advancing device

Abstract

The invention relates to a clamp comprising: a slide rail (16); a fixed bracket (12) which is seated on the slide rail (16); a counterpart bracket (14), in relation to which the slide rail (16) is slideable; an advancing device (18) on which the slide rail (16) is slideably mounted and to which the counterpart bracket (14) is non-slideably connected; an actuating apparatus (54) which is disposed on the advancing device (18) and by means of which the sliding of the slide rail (16) can be actuated in an advancing direction (90); and a blocking device (20) by means of which the sliding of the slide rail (16) in a direction (138) counter to the advancing direction (90) can be blocked; wherein the actuating apparatus (54) is rotatable with respect to the slide rail (16) and rotatable with respect to the blocking device (20), and wherein the blocking device (20) is non-rotatable with respect to the slide rail (16).

Description

[0001] The invention relates to a clamp comprising a clamping rail, a fixed bracket which is mounted on the clamping rail, a counter bracket relative to which the clamping rail is displaceable, a feed device on which the clamping rail is displaceably mounted and with which the counter bracket is connected in a displacement-resistant manner, an actuating device which is arranged on the feed device and by means of which a displacement of the clamping rail in a feed direction can be actuated, and a locking device by which a displacement of the clamping rail in a direction opposite to the feed direction can be locked.

[0002] Document DE 91 16 235 U1 discloses a clamp according to the preamble of claim 1.

[0003] The US 2006 / 0049563 A1 reveals an extension for a clamp.

[0004] WO 01 / 56746 A1 discloses a clamping device with a clamping rail slidably guided in its longitudinal direction and an actuating device comprising a handle element by which the clamping rail is slidable. A first contact element and a second contact element are held on the clamping rail. The clamping rail is slidable with respect to the first contact element, and the first contact element is rotatable relative to the actuating device.

[0005] The invention is based on the objective of providing a clamp of the type mentioned at the outset, which has extensive operating options.

[0006] This problem is solved according to the invention in the clamp mentioned at the outset by the fact that the actuating device is rotatable relative to the clamping rail and rotatable relative to the locking device, and that the locking device is rotationally fixed relative to the clamping rail.

[0007] In the clamp according to the invention, it is possible to bring the actuating device, by means of which an operator operates the clamp, into a rotational position suitable for an application relative to the clamping rail.

[0008] During such a rotation, the locking device does not rotate due to its rotationally fixed arrangement. The locking device remains in its position with respect to rotation.

[0009] This allows the feed device to be separated from the locking device. In particular, this makes it possible for the feed device to be actuated for feeding the clamping rail in any rotational position of the actuating device relative to the clamping rail.

[0010] This allows the clamp to be optimally adapted to the specific application, and the actuating device can be positioned by rotation to provide the operator with optimized access. The operator can also position the actuating device so that it does not collide with other potentially disruptive elements of the application.

[0011] The actuating device is rotatable relative to the fixed bracket and, in particular, is also rotatable relative to the counter bracket.

[0012] It is advantageous if the locking device is fixed to the feed device and the clamping rail is slidable relative to the locking device. This allows the clamping rail to be slidably mounted on the combination of locking device and feed device. This simplifies the implementation of both the feed action of the feed device and the locking action of the locking device. The feed device is rotatable relative to the locking device.

[0013] For the same reason, it is advantageous if the tensioning rail is slidably mounted on the locking device. This allows the locking function of the locking device to be implemented simply.

[0014] It is advantageous if at least one of the following is provided: In a clamping function, the locking device is positioned between the fixed jaw and the feed device; in a spreading function, the feed device is positioned between the locking device and the fixed jaw.

[0015] When the locking device is positioned between the fixed jaw and the feed mechanism during clamping, the design is simple. In particular, at least within a certain rotational range of the actuating device relative to the clamping rail, the locking device can be operated by the same hand that operates the actuating device or holds the clamp against the actuating device. This allows for one-handed operation.

[0016] A spreading function can be easily implemented if the fixed bracket is positioned accordingly.

[0017] In an advantageous embodiment, the counter bar is attached to the locking device, in particular with at least one of the following: The counter bar is fixed against displacement on the locking device; the counter bar is fixed against rotation on the locking device.

[0018] This allows for the creation of a clamp with a structurally simple design. The number of required components can be kept to a minimum, thus also keeping the clamp's weight low. Furthermore, one-handed operation can be easily achieved. The counter jaw is specifically aligned with the fixed jaw, and the only relative movement between the counter jaw and the fixed jaw is linear.

[0019] From a design perspective, it is advantageous if a section of the feed device, on which the actuating device is located, is rotatably mounted on the clamping rail. This allows for simple rotation of the actuating device. Furthermore, it is easy to ensure that the clamping rail can be advanced via the feed device regardless of the actuator's rotational position. This can be achieved, for example, by mounting a feed element or a set of feed elements on the feed device so that it is rotationally fixed relative to the clamping rail, while allowing the section of the feed device on which the actuating device is located to rotate relative to this feed element or set of feed elements.

[0020] In a structurally advantageous embodiment, the housing of the feed device is rotatably mounted on the clamping rail. The actuating device is arranged on the housing. This results in extensive operating options for the user.

[0021] In a structurally advantageous embodiment, the feed device is rotatably mounted on the locking device, at least with a partial section. This allows, in particular, the design of a connecting device between the feed device and the locking device as a rotary bearing, in order to connect the two in a displacement-resistant manner.

[0022] It is advantageous if the axis of rotation of the actuating device is parallel to the feed direction relative to the clamping rail. This results in extensive operating options.

[0023] It is possible for a rotary bearing for the rotation of the actuating device relative to the clamping rail to be continuously adjustable or to have a plurality of discrete steps, and in particular detent steps. With a continuously adjustable design, any desired angle of rotation can be set. For example, a spring action ensures a corresponding force-fit to maintain a set rotational position. If a plurality of discrete steps, and in particular detent steps, are provided, then a set rotational position can be easily maintained by positive locking. This prevents the actuating device from "twisting" out of a set rotational position due to its own weight.

[0024] It is advantageous if at least one of the following is provided: A housing of the feed device is rotatably mounted on the clamping rail via a first rotary bearing about a first axis of rotation; a housing of the feed device is rotatably mounted on the locking device via a second rotary bearing about a second axis of rotation; the first axis of rotation and the second axis of rotation are coaxial.

[0025] This allows for the simple implementation of a rotary bearing, using the first and second rotary bearings, to enable the actuator to rotate relative to the clamping rail. The rotary bearing can be designed over a large length range with respect to the clamping rail, thus achieving high stability and rigidity. In particular, the clamping rail is slidably mounted on both the feed device and the locking device. This allows for the simple rotation of the actuator by rotating the feed device housing relative to the clamping rail.

[0026] In one embodiment, the first rotary bearing comprises a first sleeve with a first opening, wherein the clamping rail is guided through the first opening and is linearly displaceable and rotationally fixed to the sleeve, and the first sleeve is mounted on the housing. In this way, a rotary bearing can be easily implemented via the first sleeve, in which, in particular, the housing forms an external shaft. The first sleeve then serves both as a linear guide for the clamping rail and as part of the rotary bearing for the rotation of the housing.

[0027] In one embodiment, the first sleeve is associated with a counter-element which engages the first sleeve to form discrete rotational positions, wherein (i) the first sleeve has a detent ring, or (ii) the counter-element has a detent ring. With a corresponding embodiment, discrete rotational positions can then be set and locked.

[0028] It is particularly advantageous if the first sleeve is at least partially located within the housing. This results in a compact design. An external shaft can then be easily implemented via the housing.

[0029] Furthermore, it is advantageous if the second rotary bearing has a second sleeve with a second opening, whereby the clamping rail is guided through the second opening and is mounted on the second sleeve in a linearly displaceable and rotationally fixed manner. The second sleeve can be used to implement both a rotary bearing for the rotation of the actuating device relative to the clamping rail and a displacement bearing for the clamping rail itself. The second sleeve can, for example, form an internal shaft, or it can interact with a mating element of the housing, which then forms an external shaft.

[0030] To create discrete rotational positions, a counter element may be assigned to the second sleeve, which engages the second sleeve to create discrete rotational positions, wherein (i) the second sleeve has a detent ring, or (ii) the counter element has a detent ring. In particular, a corresponding anti-rotation device for realizing discrete rotational positions may be provided on both the first and the second sleeve, or only on the first sleeve or only on the second sleeve.

[0031] It is possible that the second sleeve (i) is arranged on the locking device and is immersed in a housing of the feed device, or (ii) is arranged on a housing of the feed device and is immersed in a recess of the locking device. In the first case (i), the housing of the feed device forms an external shaft. In the second case (ii), the second sleeve forms an internal shaft. This results in a stable design with a rotary bearing, which minimizes tilting moments and the like.

[0032] It is advantageous if the feed device has at least one feed element upon which the actuating device acts, wherein the at least one feed element is rotationally fixed with respect to the clamping rail. This results in a simple design. In a sense, the conventional solution with a feed element for feeding the clamping rail can be used. Rotatability of the actuating device is then easily achieved, in particular by making a housing of the feed device, in which the at least one feed element is located and on which the actuating device is arranged, rotatable about the at least one feed element.

[0033] It is particularly advantageous if the at least one feed element has a contact surface for the actuating device that is ring-shaped, and especially an annular shape. This allows the actuating device to act on the at least one feed element in any rotational position of the actuating device, thus causing the clamping rail to be fed. This means, for example, that a clamping effect via the actuating device is independent of the rotational position of the actuating device relative to the clamping rail.

[0034] For the same reason, it is advantageous if the actuating surface surrounds the clamping rail in a ring shape. This allows the actuating device to act on the at least one feed element in any rotational position relative to the clamping rail, thus causing the clamping rail to advance.

[0035] It is advantageous if at least one feed element has a continuous opening through which the clamping rail is guided in a rotationally fixed manner. This allows for a simple feed movement.

[0036] It is advantageous if at least one feed element is positioned within a housing of the feed device. This results in a protected arrangement.

[0037] It is advantageous to use a feed element package with a plurality of feed elements, where adjacent feed elements are in contact. This allows for a high clamping force or spreading force to be achieved.

[0038] In a structurally advantageous embodiment, the actuating device comprises an actuating lever that can be pivoted about a pivot axis, in particular with at least one of the following: The pivot axis is oriented transversely and, in particular, perpendicularly to the feed direction; the pivot axis is oriented transversely and, in particular, perpendicularly to a rotation axis of the rotary mobility of the feed device to the clamping rail.

[0039] This results in simple operation. An operator can hold and operate the clamp using the control mechanism. In particular, a one-handed clamp can be created, meaning a clamp that can be operated with one hand.

[0040] Advantageously, the operating device has a fixed holding element positioned at a distance from the operating lever. This fixed holding element serves as a grip for the operator's hand. The operator can hold the clamp by it and also use it to support their hand while pivoting the operating lever.

[0041] In a structurally advantageous embodiment, the feed device comprises at least one feed element to which the actuating lever engages. Starting from an initial position, when the actuating lever engages, the feed element tilts towards the clamping rail, becoming wedged against it. This causes the clamping rail to move linearly in the feed direction. By pivoting the actuating lever, a linear feed of the clamping rail can be easily achieved, and a corresponding clamping or spreading force can be exerted. In particular, an eccentric arrangement is provided to convert the pivoting movement into a linear movement.

[0042] In an advantageous embodiment, a spring device is provided which is supported against the at least one feed element, wherein a spring force of the spring device tends to bring or hold the at least one feed element in its initial position relative to the clamping rail. This makes it possible to effect a feed by actuating the operating lever (against the effect of the spring force of the spring device) in a simple manner. When an operator releases the operating lever, the at least one feed element returns to its initial position, and the operating lever also returns to its initial position. A further feed can then be performed. The spring device, which is supported against the at least one feed element, also allows the operating device to be held in a rotational position relative to the clamping rail by means of a frictional connection.It is specifically provided that the spring assembly is supported on a rotatable part of the feed device. (The at least one feed element is specifically not rotatable relative to the clamping rail.)

[0043] It is advantageous if the locking device has a release element and, in particular, a release lever for lifting the lock. An operator can then use the release element to lift the lock and can then freely move the clamping rail to the locking device and the feed mechanism.

[0044] In a structurally simple embodiment, the locking device comprises at least one locking element and, in particular, a locking element assembly, wherein the at least one locking element has a continuous opening through which the clamping rail is guided, and wherein, in a locked position, the at least one locking element is canted with the clamping rail. The locking device allows for the simple prevention of movement of the clamping rail against the feed direction. This allows for a simple clamping or spreading effect between the fixed jaw and the counter jaw. Clamping or spreading can be achieved, in effect, via a pumping action. The clamping rail is moved in the feed direction by the feed device, while movement in the opposite direction is prevented by the locking device.

[0045] It is advantageous to provide a spring mechanism which is supported against the at least one locking element, wherein a spring force of the spring mechanism tends to bring or hold the at least one locking element in its locked position. The position of the at least one locking element without operator intervention is thus the locked position. This prevents displacement in the opposite direction to the feed direction. This locked position can only be released by operator intervention, overcoming the spring force of the spring mechanism, in order to allow, in particular, free movement of the clamping rail.

[0046] In a structurally advantageous embodiment, a release element is provided which acts on the at least one locking element and by means of which the angular position of the at least one locking element relative to the clamping rail can be adjusted. The locking position can thus be easily released by adjusting the required angular position accordingly.

[0047] It is advantageous if at least one of the following is provided: The fixed bracket is detachably mounted on the clamping rail; a clamping function is provided in which the feed direction is a direction of the fixed bracket's movement towards the counter bracket; a spreading function is provided in which the feed direction is a direction of the fixed bracket's movement away from the counter bracket; the clamping rail has a plurality of fixing positions for the fixed bracket and, in particular, fixing positions are located in the area of ​​opposite ends of the clamping rail.

[0048] This results in expanded application possibilities. In particular, by repositioning the fixed bracket on the clamping rail, a spreading function can be implemented starting from a clamping function.

[0049] It is particularly advantageous if the clamp is designed as a one-handed clamp, which can be held by the operator with one hand on the operating device and in which the clamping rail can be advanced in the feed direction using the holding hand. This leaves the operator's other hand free to hold one or more workpieces or for other tasks. The holding hand can also be used to rotate the operating device to the desired position relative to the clamping rail.

[0050] It is advantageous if a release element of the locking device is arranged and designed in such a way that it can be operated by the hand of an operator holding the clamp against the operating device, at least in one unrotated position. This results in simplified application possibilities.

[0051] The following description of preferred embodiments, in conjunction with the drawings, serves to explain the invention in more detail.

[0052] They show: Figure 1 shows a perspective view of an embodiment of a clamp according to the invention with a first rotational position of a feed device to a clamping rail; Figure 2 shows the same view as Figure 1 with a second rotational position of the feed device relative to the clamping rail; Figure 3, the same view as Figure 1 with a third rotational position of the feed device relative to the clamping rail; Figure 4 a view in direction A according to Figure 1 Figure 5 shows a top view of the clamp according to Figure 1 Figure 6 shows a rear view of the clamp according to Figure 2 (according to direction A according to Figure 1 ); Figure 7 a top view of the clamp according to Figure 2 Figure 8 shows a rear view of the clamp according to Figure 3 Figure 9 shows a top view of the clamp according to Figure 3 Figure 10 shows a rear view of the clamp according to Figure 1 at a fourth rotation position of the feed device to the clamping rail; Figure 11 a top view of the clamp according to Figure 10 Figure 12 shows a sectional view along line 12-12 according to Figure 5 Figure 13 shows a sectional view along line 13-13 according to Figure 5 Figure 14 shows a sectional view along line 14-14 according to Figure 5 Figure 15 shows a sectional view along line 15-15 according to Figure 5 Figure 16 shows a top view of the clamp according to Figure 1 in direction B according to Figure 1 Figure 17 shows a sectional view along line 17-17 according to Figure 4 Figure 18 shows a perspective view accordingly Figure 1 , with housing covers removed; Figure 19 a top view of the clamp according to Figure 18 (with the housing cover removed); Figure 20 a view in direction C according to Figure 19 Figure 21 shows a view in direction D according to Figure 19; and Figure 22 a view in direction E according to Figure 19 .

[0053] An exemplary embodiment of a clamp according to the invention, which is located in the Figures 1 to 22 The assembly shown and designated by 10 comprises as essential components a fixed bracket 12, a counter bracket 14 for the fixed bracket 12, a clamping rail 16, a feed device 18 and a locking device 20.

[0054] The tension rail 16 extends along a longitudinal axis 22 and is straight.

[0055] In one embodiment, the clamping rail 16 has a rectangular envelope shape in cross-section, optionally with rounded or chamfered edges. In particular, the clamping rail 16 is designed with a tapered profile (see figure). Figure 1 and Figure 16 ).

[0056] The tension rail 16, for example, is made of a metallic material.

[0057] The fixed bracket 12 is firmly (immovably) attached to the clamping rail 16. It is fundamentally possible that the fixed bracket 12 is permanently fixed to the clamping rail 16.

[0058] In one embodiment, shown in the figures, the fixed clamp 12 is detachably fixed to the clamping rail 16. This makes it possible to replace the fixed clamp or to equip the clamp 10 with a clamping function and a spreading function.

[0059] It is specifically provided that the clamping rail 16 has a plurality of fixing positions for the fixed bracket 12. In one embodiment, the clamping rail 16 comprises a first fixing position 24 for the fixed bracket 12, wherein the first fixing position 24 is located in the region of a first end 26 of the clamping rail 16. Furthermore, a second fixing position 28 is provided, which is located in the region of a second end 30 of the clamping rail 16 (compare, for example, Figure 5The second end, 30, is opposite the first end, 26.

[0060] When the fixed clamp 12 is fixed at the first end 26, a clamping function is realized, as shown in the figures. When fixed at the second fixing position 28, a spreading function can be realized for the clamp 10.

[0061] The fixed bracket 12 comprises a holding area 32, which is located on the clamping rail 16 and by means of which the fixed bracket 12 can be (removably) fixed to the clamping rail 16. A positive locking connection is provided in particular. The clamping rail 16 has one or more through openings 34 for this purpose.

[0062] A bracket element 36 is attached to the holding area 32, which is oriented transversely to the longitudinal axis 22 of the tensioning rail 16 and extends away from the tensioning rail 16.

[0063] A contact element 38 is arranged on the ironing element 36, which serves to make contact with a workpiece.

[0064] The attachment element is primarily designed as a plastic part. It forms a type of cap which sits on the bracket element 36.

[0065] In one embodiment, the attachment element 38 is replaceable.

[0066] In the clamp 10, the mounting element 38 is offset with respect to the longitudinal axis 22 from the holding area 32 (see, for example, Figure 5 The system element 38 has a greater distance to the first end 26 with respect to the longitudinal axis 22 than the holding area 32.

[0067] The system element 38 is spaced apart from the tension rail 16.

[0068] The counter bracket 14 is held on the clamping rail 16 via a holding area 40. The locking device 20 forms the holding area 40, as will be explained in more detail below.

[0069] A bracket element 42 is attached to the holding area 40. A contact element 44, which is basically designed the same way as the contact element 38 of the fixed bracket 12, is attached to the bracket element 42.

[0070] The mounting element 44 of the counter bracket 14 is aligned with the mounting element 38 of the fixed bracket 12. One alignment line lies parallel to the clamping rail 16.

[0071] A force can be exerted on one or more workpieces via the fixed bracket 12 and the counter bracket 14, which are in contact with the support elements 38, 44.

[0072] The mounting element 44 is arranged offset from the holding area 40 in a direction parallel to the longitudinal axis 22. In this direction, the mounting element 44 is closer to the first end 26 than the holding area 40.

[0073] The tension rail 16 is slidably guided on the holding area 40 (of the locking device 20). One direction of displacement 46 (direction and counter-direction) is parallel to the longitudinal axis 22.

[0074] By shifting the clamping rail 16 in the direction of displacement 46, the distance between the support elements 38 and 44 can be varied, and a force can be exerted on one or more workpieces.

[0075] In a clamping function (as shown in the drawings), the fixed bracket 12 can be moved towards the counter bracket 14 by shifting the clamping rail 16 in order to exert a clamping force on one or more workpieces between the support elements 38 and 44.

[0076] Furthermore, to release a clamping effect, the fixed bracket 12 can be moved away from the counter bracket 14 by appropriately shifting the clamping rail 16. This is explained in more detail below.

[0077] The feed device 18 serves to actively feed the clamping rail 16. It includes a drive mechanism for the clamping rail 16. Furthermore, the feed device 18 serves to hold the clamp 10. In particular, the clamp 10 is designed as a one-handed clamp, which can be held with one hand, whereby a feed movement can also be actuated by means of the feed device via the holding hand.

[0078] The feed device 18 has a housing 48 (see, for example, Figure 17 , 18 The clamping rail 16 is slidably mounted on the feed device 18 and on the housing 48 in the direction of displacement 46 via a sliding guide 50. The sliding guide 50 is designed in particular as a sliding guide and includes a sliding bearing assembly 52.

[0079] The locking device 20, and specifically the holding area 40, is connected to the housing 48 (and thus to the feed device 18). The locking device 20 and the feed device 18 form a unit, with respect to which the clamping rail 16 is slidably mounted. The sliding bearing assembly 52 is arranged on the locking device 20 (the holding area 40) and the housing 48. The locking device 20 and the feed device 18 are connected to each other in a displacement-resistant manner.

[0080] As explained in more detail below, the feed device 18 is rotatable relative to the locking device 20 and the feed device 18 is rotatably mounted on the locking device 20.

[0081] An actuating device 54 is arranged on the housing 48. The actuating device 54 serves to hold the clamp 10 by an operator with one hand and to activate a feed of the clamping rail 16 via the feed device 18 by an operator.

[0082] The housing 48 has an approximately cuboid or cylindrical shape with a base 56, a wall 58 which is arranged on the base 56 and projects transversely from it, and a lid 60 (compare Figure 18 , with the lid 60 in the Figures 18 to 22 (is removed).

[0083] The wall 58 is formed all around except for a passage for the tension rail 16. With the cover 60 in place, the housing 48 is closed with an interior 62 (compare Figure 18 ).

[0084] The actuating device 54 comprises a retaining element 64 (handle element) which is located on the wall 58 and is situated on a wall portion of the wall 58 that is spaced in a direction transverse to the longitudinal axis 22 from the clamping rail 16. This wall portion is aligned at least approximately parallel to the clamping rail 16.

[0085] The retaining element 64 is fixedly (i.e., immovably) arranged on the housing 48. For example, it is formed integrally with the wall 58. The retaining element 64 is located in a rear region 66 of the housing 48, which is closer to the second end 30 of the clamping rail 16 than to the first end 26 of the clamping rail 16.

[0086] The retaining element 64 extends outwards from the wall 58 transversely to the longitudinal axis 22 of the clamping rail 16. It is arranged and designed so that it can be grasped by a hand and gripped by the palm of an operator. The retaining element 64 allows the operator to hold the clamp 10 as a whole.

[0087] The actuating device 54 further comprises an actuating lever 68, which is mounted on the housing 48. The actuating lever 68 is pivotally mounted on a pivot bearing 70 about a pivot axis 72 (compare, for example, Figure 4 ).

[0088] The pivot axis 72 is oriented transversely and, in particular, perpendicularly to the longitudinal axis 22 of the clamping rail 16.

[0089] The actuating lever 68 is arranged at a distance from the holding element 64 and is positioned such that an operator, when holding the holding element 64, can contact the actuating lever 68 with the fingers of the holding hand and pivot about the pivot axis 72 and, in particular, pivot towards the holding element 64.

[0090] The wall 58 of the housing 48 has an opening 74, which is formed in a wall part of the wall 58 that is oriented transversely to the wall part on which the retaining element 64 is located.

[0091] A first sleeve 76 is located at opening 74. The first sleeve 76 is rotationally fixed with respect to the clamping rail 16. The first sleeve 76 has a first opening 78 (compare Figure 18), through which the clamping rail 16 has passed. The first opening 78 is adapted to the profile of the clamping rail 16 and designed such that the clamping rail 16 is guided only slidably, but not rotatably, at the first opening 78. The first sleeve 76 with the first opening 78 forms part of the sliding bearing assembly 52.

[0092] The first sleeve 76 is attached to and, in particular, inside the housing 48.

[0093] In the housing 48 (in the interior 62 of the housing 48) above the swivel bearing 70 (compare Figure 17 ) a mounting area 80 is formed. The clamping rail 16 is guided through the mounting area 80.

[0094] The installation area 80 serves to install a feed element 82.

[0095] In the interior space 62, a feed element package 84 is arranged, which comprises a plurality of feed elements 82.

[0096] For example, a feed element 82 is designed as a sheet metal part.

[0097] Adjacent feed elements 82 touch each other.

[0098] Each feed element 82 has an opening 86 through which the clamping rail has passed.

[0099] The feed element assembly 84 is designed such that the actuating lever 68 can act on the feed element assembly 84 when pivoting towards the holding element 64. In particular, the actuating lever 68 acts with a lug 88 (compare, for example, Figure 17 ) to the feed element 82 as the first feed element in the feed element package 84, which is closest to the attachment area 80.

[0100] The feed element assembly 84 is designed such that it can be tilted with the clamping rail 16 and moved via the actuating lever 68, whereby the clamping rail 16 is then moved in a feed direction 90. The feed direction 90 is a direction of the displacement direction 46. In a clamping function of the clamp 10, in which the fixed jaw 12 is arranged in the area of ​​the first end 26 ( Figures 1 to 22 ), the feed direction 90 is a direction of movement of the clamping rail 16 in which the fixed bracket 12 moves towards the counter bracket 14 (see for example Figure 17 ).

[0101] Starting from an initial position of the feed element package 84 (compare, for example, Figure 17The clamping rail 16 can be moved by an operator via the actuating lever 68. The initial position 92 is a position in which the feed element assembly 84 with the outer feed element 82 rests against the contact area 80. In the initial position 92 of the feed element assembly 84, the clamping rail 16 can be moved freely on the feed device 18 (if the locking device 20 is not taken into account).

[0102] In the initial position 92 of the feed element package 84, the actuating lever 68 is also in an initial position in which the actuating lever 68 has a maximum distance from the holding element 64. Starting from this initial position, the actuating lever 68 can be pivoted in a direction 94 ( Figure 17 ) to pivot onto the holding element 64.

[0103] A spring device 96 is provided (compare, for example, Figure 18), which is supported on the feed element assembly 84 and thereby on the feed element 98, which is an outer feed element and faces away from the feed element 82. The spring assembly 96 is further supported on the first sleeve 76 or on a wall 100 in the housing 48, the wall 100 being located at the sleeve 76.

[0104] The spring assembly 96 is arranged and designed such that it tends to press the feed element assembly 84 into its initial position 92 against the contact area 80. To pivot the actuating lever 68 in the pivoting direction 94, an operator must overcome the spring force of the spring assembly 96. When an operator releases the actuating lever 68, the spring assembly 96 presses the feed element assembly 84 into the initial position 92.

[0105] The interior 62 of the housing 48 can be assigned an upper part 102 and a lower part 104 (compare Figure 17The lower part 104 and the upper part 102 are separated by the clamping rail 16, which runs through the housing 48. The actuating device 54 is arranged adjacent to the lower part 104 on the housing 48.

[0106] The nose 88 of the actuating lever 68 is positioned in the lower part 104 and acts there on the feed element package 84.

[0107] Starting from the initial position 92, a pivoting of the actuating lever 68 in the pivoting direction 94, due to the engagement of the nose 88 with the feed element assembly 84, causes the feed element assembly 84 to tilt with the clamping rail 16. During this pivoting movement, the actuating lever 68 initially causes a change in the angular position of the feed element assembly 84 relative to the clamping rail 16. This leads to a tilting of the feed element assembly 84 with the clamping rail 16.

[0108] In the illustrated embodiment (compare, for example, Figure 17) the feed element package 84 in the initial position 92 has an angular position 106 to the longitudinal axis 22 with respect to a surface of the feed element 82, which is approximately 90°.

[0109] In the illustrated embodiment ( Figure 17 The corresponding angle 106 is slightly less than 90°, with the feed element assembly inclined away from the counter bracket 14 in the initial position 92. The corresponding openings of the feed elements of the feed element assembly 84 are arranged and designed such that even with this inclination (if the locking device 20 is not taken into account) the clamping rail 16 can still move freely on the feed device 18.

[0110] When the actuating lever 68 is pivoted towards the holding element 64, the angle 106 decreases and the tilting occurs. Further pivoting of the actuating lever 68 towards the holding element 64 causes the clamping rail 16 to engage and a linear displacement in the feed direction 90.

[0111] In one embodiment, when the angle of the feed element package 84 changes due to pivoting of the actuating lever 68, it can be supported in the contact area 80 in the upper part 102 of the housing 48.

[0112] An eccentric is formed by the actuating lever 68 with the nose 88, the feed element package 84 and the contact area 80.

[0113] The pivot bearing 70 is arranged and designed in such a way that the pivot axis 72 penetrates the clamping rail 16 (compare Figure 18). Thus, the pivot axis 72 lies between the upper part 102 and the lower part 104, and the nose 88 engages the feed element package 84 offset from the pivot axis 72.

[0114] The feed element package 84 has an engagement surface 108 for the nose 88 on the first feed element 82 (compare Figure 19 This attack surface 108 is ring-shaped and surrounds the clamping rail 16 in a ring-like manner. As will be explained in more detail below, this allows for the realization of a rotatable feed device 18, in which the actuating device 54 with the actuating lever 68 can be rotated relative to the clamping rail 16, while the feed element assembly 84 is not rotated along with it, and the nose 88 can still act on the feed element assembly 84 in every rotational position of the actuating device 54 relative to the clamping rail 16.

[0115] In one embodiment, the attack surface 108 is designed as a circular ring.

[0116] In particular, the feed elements of the feed element package 84 are designed as ring discs.

[0117] The locking device 20 also includes a housing 110, on which the clamping rail 16 is slidably arranged. This housing 110 forms the holding area 40. The clamping rail 16 is guided through the housing 110.

[0118] A second sleeve 112 is attached to the housing 110 (compare, for example, Figure 17 ), which has an opening through which the clamping rail 16 is guided. The second sleeve 112 is part of the sliding bearing assembly 52.

[0119] The second sleeve 112 projects beyond a side 114 of the housing 110, with side 114 facing the housing 48 of the feed device 18. The second sleeve 112 is immersed in a corresponding receptacle 116 of the housing 48 of the feed device 18.

[0120] The housing 110 is rotationally fixed relative to the clamping rail 16 and displacement-fixed relative to the feed device 18.

[0121] The feed device 18 with the housing 48 and the actuating device 54 is rotatable via a rotary bearing 118 to the clamping rail 16 and thereby rotatable to the counter bracket 14 and the fixed bracket 12. A rotation axis 120 of the rotary bearing 118 is parallel to the longitudinal axis 22 and thus also parallel to the displacement direction 46.

[0122] The pivot axis 72 of the pivot bearing 70 of the actuating lever 68 is transverse and, in particular, perpendicular to the axis of rotation 120.

[0123] The rotary bearing comprises a first rotary bearing 122 with a first axis of rotation, which is formed by the first sleeve 76. The first sleeve 76 is seated on a receptacle 126 of the housing 48, the housing 48 and the receptacle 126 forming, in effect, an external shaft. The first sleeve 76 is rotationally fixed to the clamping rail 16 (the clamping rail 16 being slidably mounted on the first sleeve 76), and the housing 48 is rotatably mounted on the receptacle 126 about the axis of rotation 120 on the first sleeve 76.

[0124] Opposite the first sleeve 76, the second sleeve 112 is positioned. A second pivot bearing 124 of the pivot bearing 118 is formed by means of the receptacle 116, with a second axis of rotation. The first axis of rotation and the second axis of rotation coincide and form the axis of rotation 120.

[0125] In the area of ​​the second sleeve 112, the housing 48 with the receptacle 116 also forms a type of external shaft.

[0126] The feed element package 84 is positioned in the interior 62 of the housing 48 between the first sleeve 76 and the second sleeve 112.

[0127] The second rotary bearing 124 rotatably connects the housing 48 of the feed device 18 to the locking device 20. The feed device 18 and the locking device 20 form a single unit, relative to which the clamping rail 16 is displaceable in the direction of displacement 46. In particular, the second rotary bearing 124 is designed such that a displacement-resistant connection exists between the feed device 18 and the locking device 20 via the combination of the receptacle 116 and the second sleeve 112.

[0128] For example, a ring-shaped formation is formed on the second sleeve 112, into which a bead dips, which is formed on the housing 48 and in particular the cover 60, in order to achieve a displacement-resistant connection.

[0129] In the illustrated and described embodiment, the second sleeve 112 is formed on the housing 110 of the locking device 20. It is also possible, in principle, for a corresponding sleeve to be arranged or formed on the housing 48 of the feed device 18, which then fits into a corresponding recess in the housing 110. In this case, the second sleeve forms an internal shaft for the rotation of the housing 48.

[0130] The feed device 18 is designed such that the actuating device 54 is rotatable relative to the fixed bracket 12 and the counter bracket 14. The feed element assembly 84 is rotationally fixed with respect to the clamping rail 16. When the housing 48 rotates about the axis of rotation 120, the nose 88 of the actuating lever 68 rotates about the axis of rotation 120 and engages at different points on the contact surface 108, depending on the rotational position. This is made possible by the annular shape of the contact surface 108.

[0131] Due to the described design of the feed device 18, in any rotational position of the actuating device 54 about the axis of rotation 120, a feed of the clamping rail 16 in the feed direction 90 can be activated by an operator via the actuating lever 68.

[0132] In the housing 110 of the locking device 20 at least one locking element 128 and in particular a locking element package 130 is arranged.

[0133] In the illustrated embodiment, the locking element package comprises two locking elements 128 which are positioned one above the other and touch each other.

[0134] A locking element 128 has a through opening through which the clamping rail 16 passes. The locking element 128 is rotationally fixed to the clamping rail 16.

[0135] The locking element package 130 is supported by a spring device 132 (compare Figure 19 The spring assembly is supported against a wall 134 and the locking element assembly 130. The wall 134 faces the housing 48.

[0136] The locking element package 130 has a locking position 136 (see, for example, Figure 19 ) in which the locking element assembly 130 is canted relative to the clamping rail 16. A force from the spring device 132 pushes the locking element assembly 130 into the locked position.

[0137] In the locking position 136, the clamping rail 16 is displaced in a direction 138 which is opposite to the feed direction 90 (compare for example Figure 19 ) is blocked. However, a displacement in the feed direction 90 is not blocked by the locking element package 130.

[0138] The locking element package 130 has an inclination in the locking direction at an angle 140 to a perpendicular to the longitudinal axis 22 of the tension rail 16 (compare Figure 19 ), wherein this inclination is opposite to the inclination of the feed element package 84 when it is canted with the clamping rail 16 in order to obtain a locking mechanism for displacement in the opposite direction 138 to the feed direction.

[0139] A release lever 142 is connected to the locking element package 130. An operator can grasp the release lever 142 and pivot it in a direction 144 that lies towards the second end 30 of the clamping rail 16. In doing so, he must overcome the spring force of the spring assembly 132.

[0140] The locking element package 130 rests against an inner area of ​​the housing 110 to enable this pivoting capability.

[0141] By pivoting the release lever 142 in direction 144, the angle of the locking element assembly 130 to the longitudinal axis 22 of the clamping rail is changed. It is reduced, meaning the alignment moves closer to an orthogonal alignment. This releases the clamping rail 16 for movement within the openings of the locking element assembly 130, thus enabling displacement.

[0142] The release lever 142 protrudes beyond the housing 110 on one side.

[0143] The clamp 10 has a starting position ( Figure 1 ), in which the release lever 142 is located on the same side as the actuating device 54. In particular, the release lever 142 is then arranged and designed such that, when an operator holds the clamp 10 on the actuating device 54, he can access the release lever 142 with one or more fingers of the holding hand.

[0144] It is fundamentally possible that the rotary bearing 118 is designed in such a way that stepless rotation about the axis of rotation 120 is possible.

[0145] A set rotational position is held in a force-fit position, in particular due to the spring force of the spring device 132.

[0146] In an alternative embodiment, a plurality of discrete rotational positions are provided. For this purpose, for example, the second sleeve 112 is equipped with a detent ring 146 (compare Figure 14) provided; this has a plurality of elevations 148, which are spaced apart from each other.

[0147] The housing 48 has a counter element 150 ( Figure 14 ) for the locking ring 146. The counter element 150 is designed to be inserted into an area (into a "valley") between adjacent elevations 148. A specific rotational position of the housing 48 relative to the second sleeve 112 is then secured by positive locking.

[0148] A greater force is required to move the element out of such a set rotational position. This increased force is necessary to move the counter element 150 out of the area between adjacent protrusions 148.

[0149] In one embodiment, the counter element 150 is slidably mounted on the housing 48 and spring-supported. A spring force presses the counter element 150 against the detent ring 146 and, in a locked rotational position, into the area between adjacent protrusions 148. To release this rotational position, i.e., to move the counter element 150 out of the area between adjacent protrusions 148, the counter element 150 must be moved against the spring force; that is, the spring force must be overcome. This is done by an operator, who must exert a corresponding force during the rotation.

[0150] The clamp 10 according to the invention functions as follows: The fixed jaw 12, the counter jaw 14, and the locking device 20 are arranged so as to be rotationally fixed relative to the clamping rail 16. The housing 48 of the feed device 18 and the actuating device 54 are rotatable about the axis of rotation 120 via the rotary bearing 118 relative to the clamping rail 16 and thus also relative to the fixed jaw 12, the counter jaw 14, and the locking device 20.

[0151] An operator can, as in the Figures 1 to 11 is shown (see especially the Figures 1 to 3 Depending on the application, the actuating device 54 is moved into the advantageous or desired rotational position relative to the fixed bracket 12 or counter bracket 14. During this rotation, the alignment of the brackets 12 and 14 relative to each other is maintained. The locking device 20 does not rotate.

[0152] In each rotary position of the actuating device 54, an operator can effect a feed via the feed device 18 of the clamping rail 16 in order to move the fixed jaw 12 towards the counter jaw 14 in the clamping function or to clamp one or more workpieces between the fixed jaw 12 and the counter jaw 14.

[0153] This is ensured by the ring-shaped attack surface 108.

[0154] Without operator intervention on the release lever 142, the locking element package 130 is in the locked position 136 due to the force exerted by the spring device 132. This means that movement of the clamping rail 16 in the opposite direction 138 to the feed direction 90 is blocked.

[0155] When an operator actuates the operating lever 68 (performs a pivoting movement), it acts on the feed element assembly 84, and the clamping rail 16 is then moved in the feed direction 90 as described above. A counter-movement is blocked by the locking element assembly 130 in the locking position 136.

[0156] By actuating the release lever 142 with pivoting in the direction 144, the locking on the locking device 20 can be lifted and a corresponding free movement of the clamping rail 16 on the locking device 20 (and also of the feed device 18 if the actuating lever 68 is not actuated) is enabled.

[0157] In the solution according to the invention, the locking device 20 and the feed device 18 are decoupled from each other in the sense that even in the locking position 136 of the locking element package 130, rotation of the actuating device 54 about the axis of rotation 120 is possible and feed actuation on the feed device 18 is possible.

[0158] In the described embodiment, the feed direction 90 is such that the fixed bracket 12 is movable on the counter bracket 14 and one or more workpieces can be clamped between the fixed bracket 12 and the counter bracket 14.

[0159] The plant elements 38 and 44 face each other.

[0160] In one embodiment, it is possible to fix the fixed bracket 12 at the second fixing position 28. The fixing is achieved in such a way that the contact elements 38 and 44 are then facing away from each other.

[0161] In this case, a feed in the feed direction 90 of the clamping rail 16 causes the fixed jaw 12 and the counter jaw 14 to move apart. This creates a spreading function. A spreading force can be applied to one or more workpieces.

[0162] The clamping function of the clamp 10 ( Figures 1 to 21 ) the locking device 20 is positioned on the clamping rail 16 between the fixed bracket 12 and the feed device 18.

[0163] If the clamp 10 is modified so that the spreading function is feasible, then the feed device 18 is positioned between the locking device 20 and the fixed jaw 12. Reference symbol list

[0164] 10 Clamp 12 Fixed jaw 14 Counter jaw 16 Clamping rail 18 Feed device 20 Locking device 22 Longitudinal axis 24 First fixing position 26 First end 28 Second fixing position 30 Second end 32 Holding area 34 Opening 36 Bracket element 38 Contact element 40 Holding area 42 Bracket element 44 Contact element 46 Direction of movement 48 Housing 50 Movement guide 52 Slide bearing device 54 Actuating device 56 Base 58 Wall 60 Cover 62 Interior 64 Holding element 66 Rear area 68 Actuating lever 70 Swivel bearing 72 Swivel axis 74 Opening 76 First sleeve 78 First opening 80 Contact area 82 Feed element 84 Feed element package 86 Opening 88 Nose 90 Feed direction 92 Starting position 94 Swivel direction 96 Spring device 98 Feed element 100 Wall 102 Upper part 104 Lower part 106 Angular position 108 Contact surface 110 Housing 112 Second sleeve 114 Side 116 Mount 118 Rotary bearing 120 Axis of rotation 122 First rotary bearing 124 Second rotary bearing 126 Mount 128 Locking element 130 Locking element package 132 Spring device 134 Wall136 Locking position 138 Opposite direction 140 Angle 142 Release lever 144 Direction 146 Detent ring 148 Raise 150 Counter element

Claims

1. Clamp, comprising a clamp bar (16), a fixed jaw (12) which is located at the clamp bar (16), a counter jaw (14) relative to which the clamp bar (16) is displaceable, an advancement apparatus (18) on which the clamp bar (16) is displaceably supported and to which the counter jaw (14) is connected in translationally fixed relation, an actuating device (54) which is arranged at the advancement apparatus (18) and by way of which displacement of the clamp bar (16) in an advance direction (90) is actuatable, and a blocking apparatus (20) by way of which displacement of the clamp bar (16) in a counter direction (138) to the advance direction (90) is blockable, characterized in that the actuating device (54) is rotatable relative to the clamp bar (16) and is rotatable relative to the blocking apparatus (20), and in that the blocking apparatus (20) is rotationally fixed relative to the clamp bar (16).

2. Clamp in accordance with claim 1, characterized in that the blocking apparatus (20) is connected to the advancement apparatus (18) in translationally fixed relation thereto and the clamp bar (16) is displaceable relative to the blocking apparatus (20).

3. Clamp in accordance with claim 1 or 2, characterized in that the clamp bar (16) is displaceably supported on the blocking apparatus (20).

4. Clamp in accordance with any one of the preceding claims, characterized by at least one of the following: - in a clamping function, the blocking apparatus (20) is positioned between the fixed jaw (12) and the advancement apparatus (18); - in a spreading function, the advancement apparatus (18) is positioned between the blocking apparatus (20) and the fixed jaw (12).

5. Clamp in accordance with any one of the preceding claims, characterized in that the counter jaw (14) is located at the blocking apparatus (20), in particular with at least one of the following: - the counter jaw (14) is located at the blocking apparatus (20) in translationally fixed relation thereto; - the counter jaw (14) is located at the blocking apparatus (20) in rotationally fixed relation thereto.

6. Clamp in accordance with any one of the preceding claims, characterized in that a region of the advancement apparatus (18) in which the actuating device (54) is arranged, is supported for rotation relative to the clamp bar (16), and in particular characterized in that a housing (48) of the advancement apparatus (18) is rotatably supported on the clamp bar (16).

7. Clamp in accordance with any one of the preceding claims, characterized in that the advancement apparatus (18) is rotatably supported in at least a portion thereof on the blocking apparatus (20).

8. Clamp in accordance with any one of the preceding claims, characterized in that a rotational axis (120) of the rotatability of the actuating device (54) relative to the clamp bar (16) is parallel to the advance direction (90).

9. Clamp in accordance with any one of the preceding claims, characterized by at least one of the following: - a housing (48) of the advancement apparatus (18) is supported for rotation about a first rotational axis (120) on the at least one clamp bar (16) via a first rotary bearing (122); - a housing (48) of the advancement apparatus (18) is supported for rotation about a second rotational axis (120) on the blocking apparatus (20) via a second rotary bearing (124); - the first rotational axis (120) and the second rotational axis (120) are coaxial.

10. Clamp in accordance with claim 9, characterized by at least one of the following: - the first rotary bearing (122) comprises a first sleeve (76) having a first opening (78), wherein the clamp bar (16) is passed through the first opening (78) and is linearly displaceably and rotationally fixedly supported on the first sleeve (76) and in that the first sleeve (76) is located at the housing (48); - the first sleeve (76) is associated with a counter element that engages the first sleeve (76) to form discrete rotational positions, wherein (i) the first sleeve (76) comprises a latching rim, or (ii) the counter element comprises a latching rim; - the first sleeve (76) is at least partially arranged in the housing (48); - the second rotary bearing (124) comprises a second sleeve (112) having a second opening, wherein the clamp bar (16) is passed through the second opening and is linearly displaceably and rotationally fixedly supported on the second sleeve (112), and in particular in that the second sleeve (112) has associated therewith a counter element (150) which engages the second sleeve (112) for forming discrete rotational positions, wherein (i) the second sleeve (112) comprises a latching rim (146), or (ii) the counter element comprises a latching rim, and / or the second sleeve (112) is (i) arranged at the blocking apparatus (20) and is entered in a housing (48) of the advancement apparatus (18), or is (ii) arranged at a housing of the advancement apparatus and is entered in a recess of the blocking apparatus.

11. Clamp in accordance with any one of the preceding claims, characterized in that the advancement apparatus (18) comprises at least one advance element (82, 98) on which the actuating device (54) acts, wherein the at least one advance element (82, 98) is rotationally fixed relative to the clamp bar (16), and in particular characterized by at least one of the following: - the at least one advance element (82, 98) comprises an engagement surface (108) for the actuating device (54), which engagement surface (108) is formed in the shape of a ring, and is formed in the shape of a circular ring in particular, in particular wherein the engagement surface (108) for the actuating device (54) surrounds the clamp bar (16) in a ring shape; - the at least one advance element (82, 98) has a through-opening through which the clamp bar (16) is passed in rotationally fixed relation thereto; - the at least one advance element (82, 98) is positioned in a housing (48) of the advancement apparatus (18); - an advance element pack (84) having a plurality of advance elements (82, 98) is provided, in particular wherein adjacent advance elements are in contact with one another.

12. Clamp in accordance with any one of the preceding claims, characterized in that the actuating device (54) comprises an actuating lever (68) which is pivotable about a pivot axis (72), in particular with at least one of the following: - the pivot axis (72) is oriented transversely and in particular perpendicularly to the advance direction (90); - the pivot axis (72) is oriented transversely and in particular perpendicularly to a rotational axis (120) of the rotational mobility of the advancement apparatus (18) relative to the clamp bar (16); - the actuating device (54) has a stationary holding element (64) in spaced apart relation to the actuating lever (68); - the advancement apparatus (18) comprises at least one advance element (82, 98) which is engaged by the actuating lever (68), wherein, starting from an initial position (92) of the at least one advance element (82, 98), upon engagement by the actuating lever (68), the at least one advance element (82, 98) is inclined to the clamp bar (16) with canting of the at least one advance element (82, 98) relative to the clamp bar (16), and the clamp bar (16) is driven in linear displacement in the advance direction (90), in particular characterized by a spring device (96) which is supported on the at least one advance element (98), wherein a spring force of the spring device (96) attempts to bring or hold the at least one advance element (98) in its initial position (92) relative to the clamp bar (16).

13. Clamp in accordance with any one of the preceding claims, characterized in that the blocking apparatus (20) comprises a release element (142), and comprises a release lever in particular, for releasing a blocking condition.

14. Clamp in accordance with any one of the preceding claims, characterized in that the blocking apparatus (20) comprises at least one blocking element (128), and comprises a blocking element pack (130) in particular, wherein the at least one blocking element (128) has a through-opening through which the clamp bar (16) is passed, and wherein in a blocking position (136) of the at least one blocking element (128), the at least one blocking element (128) is canted relative to the clamp bar (16), in particular characterized by at least one of the following: - a spring device (132) which is supported on the at least one blocking element (128), wherein a spring force of the spring device (132) attempts to bring or hold the at least one blocking element (128) in its blocking position (136); - a release element (142) which acts upon the at least one blocking element (128) and via which an angular position of the at least one blocking element (128) to the clamp bar (16) is adjustable.

15. Clamp in accordance with any one of the preceding claims, characterized by at least one of the following: - the fixed jaw (12) is releasably located at the clamp bar (16); - a clamping function is provided in which the advance direction (90) is a direction of movement of the fixed jaw (12) towards the counter jaw (14); - a spreading function is provided in which the advance direction (90) is a direction of movement of the fixed jaw (12) away from the counter jaw (14); - the clamp bar (16) has a plurality of fixing positions (24; 28) for the fixed jaw (12) and, in particular, fixing positions (24; 28) are located in the area of opposing ends (26; 30) of the clamp bar (16).

16. Clamp in accordance with any one of the preceding claims, characterized by the clamp being configured as a one hand operated clamp which is holdable by the actuating device (54) by one hand of an operator, and in which an advance of the clamp bar (16) is actuatable in the advance direction (90) via the actuating device (54) by the holding hand, and in particular - characterized in that a release element (142) of the blocking apparatus (20) is arranged and configured such that it is operable, by the holding hand of an operator who is holding the clamp by the actuating device (54), in at least a non-rotated position.

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