CN105473462A - Clamping and locking device - Google Patents

Abstract

The invention relates to a clamping and locking device for connecting a first component to a second component, in particular a lid (12) closing an opening, to a container (13). In order to adjust the clamping force applied, the clamping and locking device has an adjusting mechanism in the form of an inner eccentric bearing (6, 7) for a bearing pin (8) of a traction bow (4) of the clamping and locking device. The clamping and locking device, which can be disassembled into individual parts, preferably without the use of screws, offers good protection against contamination and can be cleaned particularly well. The clamping and locking device is therefore particularly suitable for use in the pharmaceutical or food industry.

Description

Clamping and locking device

technical field

The invention relates to a clamping closure for connecting a first component to a second component, in particular a lid closing an opening, to a container, the clamping closure comprising: Or a base body fixedly mounted on the first member; a pivot element with a clamping lever hingedly supported on the base body; a pulling bow rotatably supported on the pivot element, wherein the pulling bow The bearing position of the pivot element is adjustable with respect to the distance of the bearing position of the pivot element on the base body; and a corresponding holder for releasably or fixedly mounting the clamping locking device on the second member, pulling In the clamped state of the clamping lock, the bow engages behind the counter-holder.

Background technique

Clamping locks of this type are known. It works as follows: by manual operation of the clamping lever installed on the pivot element, the pivot element is rotated or deflected around the bearing position of the pivot element on the base body according to the toggle principle, so that it is arranged on the pivot element The pulling bow is locked with the corresponding holder or released from the locked position with the corresponding holder. To bring the clamping lock into the locked or clamped position, the clamping lever is manually moved downwards. By moving the clamping lever upwards, the pulling bow is released from the locked position with the corresponding holder, so that the connection between the two components is released. Such clamping closures are used in particular for closing container lids which close an opening and clamping the lid to the container in this case. A special application is the clamping of centrifuge covers and centrifuge housings.

Clamping locks of this type are known which regulate the applied clamping force. This is achieved in that the distance between the bearing position of the pulling bow on the pivot element and the bearing position of the pivot element on the base body is adjusted.

Clamping locks are known in which the pulling bow is U-shaped and the two free legs of the U are supported on pivot elements. The free ends of the two U-parts are each threaded here and can be adjusted in the axial direction relative to the bearing position on the pivot element by means of the screw connection. Accordingly, in this embodiment, the corresponding adjusting mechanism for adjusting the clamping force is arranged unprotected in the outer region of the clamping lock.

However, such pinch closures are increasingly used to close containers used in the pharmaceutical or food sector. Contamination of such clamping locks has a considerable influence here. In other words, the clamping lock should not be easily soiled and should be easy to clean. Of course, no dirt adhering to the clamping closure must be allowed to fall into the container when the associated container lid is opened.

Contents of the invention

The object underlying the present invention is to provide a clamping closure of the type mentioned at the outset, which provides good protection against contamination and can be cleaned particularly well.

According to the invention, this object is solved in a clamping lock device of the specified type in that the pulling bow has a transverse hole with an internal toothing in the end region, a disk with an external toothing and This internal toothing engages, the disc is carried by a transverse pin arranged eccentrically on the disc and rotatably supported on the pivot element, and the disc can be released from its engagement by axially outward movement of the transverse pin disengaged and can be moved into a new engagement position by turning and moving axially inwards, so that the distance between the bearing position of the pivot element and the bearing position of the pulling bow (axis of the transverse pin) is thus imposed by the clamping lock The clamping force is adjustable.

Thus, in contrast to the prior art described above, the present invention provides an internal adjustment mechanism which in particular does not have a thread exposed around the clamping lock which is susceptible to contamination and which is difficult to clean. According to the invention, the adjustment mechanism between the pivot element and the drawing bow is integrated in the drawing bow. A corresponding transverse hole with external toothing is located in the pulling bow itself, and the thus engaged disk with external toothing is arranged in this transverse hole and can be disengaged from the meshing of the disk with the external toothing by axial movement and can be Enter the engagement again. By simply turning the disc by means of a transverse pin connected to the disc that serves as a support pin, the position of the support pin eccentrically arranged on the disc relative to the bearing position of the pivot element can be adjusted, thereby adjusting the force exerted by the clamping lock. clamping force.

In this case, the pivot element is designed in particular such that it supports the pulling bow on both sides, so that the adjustment mechanism integrated in the pulling bow is covered and protected by the pivot element on both sides. The transverse pin, which serves as a bearing pin for the pulling bow, is rotatably mounted on the pivot element on both sides of the pulling bow.

The pivot element has, in particular, two approximately inverted triangular side sections, which have a connecting section on which the clamping lever is arranged and which are articulated on both sides. supported on the substrate. The lower end of the triangular pivot element cooperates here with the stop of the associated component. In this embodiment, the bearing point of the pivot element on the base body is located in the region of one upper corner of the triangle, while the bearing point of the pulling bow on the pivot element is arranged in the region of the other upper corner of the triangle.

In general, the bearing position of the pulling bow relative to the bearing position of the pivot element on the base body can preferably be adjusted by axial movement of the associated transverse pin and subsequent rotation of the disk. In this way, the clamping force of the clamping lock can be set or adjusted relatively easily and without problems, despite the fact that the actual adjusting mechanism is mounted in a protected manner within the drawbar.

With regard to the design of the pulling bow, according to the invention, the pulling bow preferably has a single arm section, which is designed as a hook at the contact end for the corresponding holder. The single-armed pulling bow is preferably accommodated and supported between the two side sections of the triangular pivot element. The pulling bow lies here in a vertical plane with the clamping lever. At the free end, the single arm section is formed in the shape of a hook, so that the pulling bow can engage from behind with a corresponding holder, which is preferably also formed in the shape of a hook.

As already mentioned, the clamping lock configured according to the invention is preferably designed without threads. No threaded connections, in particular for adjusting the clamping force, are used. This brings with it considerable advantages, since such thread sections are highly susceptible to contamination and can only be cleaned with difficulty or with considerable effort.

A further feature of the invention is that the clamping lock is preferably designed to be detachable apart from the fastening of the base body and the corresponding holder. In other words, the base body and the counter-holder are usually fixedly connected to the two mating components (lid and container), but can also be detachably connected thereto. In the latter case, the base body and the corresponding holder are of course also detachable.

The detachability of the clamping closure has the advantage that the resulting individual parts can be cleaned particularly well, in particular can withstand washing processes. For example, the entire clamping lock can thus be fully cleaned in an industrial washing machine. Here, preferably the desired detachability can be easily performed manually by simply manually removing the bearing pins of the pivot element on the base body and the transverse pins for supporting the pulling bow on the clamping element. The pin can then release the pivoting element from the base and the pulling bow from the pivoting element.

The pivot element is therefore preferably rotatably mounted on the base body via a manually removable pivot pin, and the transverse pin for supporting the pulling bow is preferably manually removable from its position. No tools, especially special tools, are required for this.

In a special embodiment of the invention, the pivot pin and the transverse pin are designed as bolts with an axial fastening. In this embodiment, the pin has a button, by means of which a pawl, which is arranged in the pin and protrudes from the side of the pin, is released as an axial fastening. The pin is then movable in the axial direction. When the push button is no longer actuated, the pawl reaches its axially fixed position again, so that the pin is fixed in the axial direction. The pivot element can thus be released from the base body and the pulling bow from the pivot element in a simple manual manner by means of such a pin.

Description of drawings

The present invention will be described in detail below with reference to the embodiments in conjunction with the accompanying drawings. The accompanying drawings are as follows:

Figure 1 is a side view of a partial section of a clamping locking device;

Figure 2 is a rear view of the clamping locking device of Figure 1;

Figure 3 is a side view of the pinch closure of Figures 1 and 2 in the mounted state on a container.

detailed description

The clamping closure shown in the drawings comprises an approximately triangular base body 1 which can be fixedly or releasably arranged, for example, on a wall of a container and which forms a pivot for the clamping closure in its upper end region. Revolving bearing. The clamping lock also comprises a pivot element 2 which, in side view, has approximately the shape of an inverted triangle and has two triangular side sections and a connecting section. The two side sections of the pivot element 2 are pivotally mounted on the base body 1 , more precisely on the base body via a pivot pin or bearing pin 9 . The two side sections therefore surround the base body 1 on both sides.

The pivot element 2 is also provided with a clamping lever 3 which is arranged on the connection section of the pivot element 2 . Furthermore, the pulling bow 4 is rotatably mounted on the pivot element 2 via a transverse pin 8 . The transverse pin 8 is mounted rotatably in two side sections of the pivot element 2 , between which the pulling bow 4 is arranged.

The pulling bow 4 has a single arm, which is provided at its free end with a hook 5 for engaging from behind a corresponding holder, not shown here.

The clamping lock works according to the toggle principle. The clamping lock is released from its locking by manually lifting the clamping lever 3 by moving the pulling bow 4 to the left in FIG. 1 and out of its engagement with the corresponding holder. . Clamping of the clamping rod is achieved by moving the clamping rod 3 downward.

In order to be able to adjust the clamping force exerted by the clamping lever, the distance between the bearing position of the pivot element 2 on the base body 1 and the bearing position of the pulling bow 4 on the pivot element 2 can be adjusted manually. For this purpose, a corresponding bearing pin or transverse pin 8 for supporting the pulling bow 4 on the pivot element 2 is arranged eccentrically on the disk 7 which is arranged in the transverse hole 6 of the pulling bow 4 . The disc 7 is provided with external toothing which meshes with the internal toothing of the transverse bore 6 .

By moving the transverse pin 8 axially, the disc 7 can be released from its engagement with the internal toothing of the transverse bore 6 . The disc 7 is then rotatable relative to the transverse hole and then engages with the internal toothing of the transverse hole, so that the relative position of the transverse pin 8 to the bearing position of the pivot element 2, that is to say to the position of the bearing pin 9, changes. .

In order to make the transverse pin 8 axially displaceable but also axially fixed, the transverse pin 8 is configured as a so-called latch, where the pawl of the pin 8 can be released by means of the button 10 shown in FIG. 2 so that the pin can be pivoted. to move. When the push button 10 is no longer actuated, the pawl assumes its locking position again and fixes the pin 8 and thus the disk 7 again in its meshing position with the external toothing of the transverse hole 6 .

FIG. 3 shows the clamping pin in a position in which the lid 12 of the container 13 is clamped to the container. The pulling bow 4 engages with its hook end 5 from behind in a corresponding holder 11 fastened to the cover 12 . The clamping lock can be released from its clamping position by manually moving the clamping lever 3 to the right in FIG. 3 so that the clamping element 2 is deflected relative to the base body 1 . As a result, the pulling bow 4 arranged on the pivot element 2 is moved upwards in FIG. 3 into the position indicated by the dashed line and released from the counter holder 11 . The clamping lock is locked again by the oppositely directed movement of the clamping lever 3 . As mentioned above, the clamping force applied by means of the clamping lock can be achieved by the rotation of the transverse pin 8 and thus the disk 7 .

Claims (8)

1. A clamping closure for connecting a first component to a second component, in particular a lid closing an opening to a container, comprising: for releasably or fixedly mounting the clamping closure on the first component A base on the base; a pivoting element with a clamping lever hingedly supported on the base; a pulling bow rotatably supported on the pivoting element, wherein the supporting position of the pulling bow is relative to the pivoting element The distance of the support position on the base is adjustable; and a corresponding holder for releasably or fixedly mounting the clamping lock on the second member, the pulling bow is in the clamp of the clamping lock Engages in the corresponding holder from behind in a tight state, characterized in that the pulling bow (4) has in the end region a transverse hole (6) with internal toothing, a disk with external toothing ( 7) Engaging with this internal toothing, the disc is carried by a transverse pin (8) eccentrically arranged on the disc (7) and rotatably supported on the pivot element (2), and the disc can pass through the transverse pin Axial outward movement of (8) disengages from the engagement of the disc and can be rotated and axially inwardly moved into a new engaged position so that in the bearing position of the pivot element (2) and the pulling bow (4) The distance between the bearing positions (axis of the transverse pin (8)) and thus the clamping force exerted by the clamping lock is adjustable. 2. Clamping locking device according to claim 1, characterized in that the pivot element (2) has two substantially inverted triangular side sections, the side sections have connecting sections, the clamping lever (3) is arranged on the connection section, and the side sections are articulated on both sides on the base body (1). 3. Clamping locking device according to claim 1 or 2, characterized in that the pulling bow (4) has a single arm section at the contact end for the counter holder (11) The upper part is hooked. 4. Clamping lock device according to one of the preceding claims, characterized in that the clamping lock device is designed without threads. 5. Clamping lock device according to one of the preceding claims, characterized in that, apart from the fastening of the base body (1) and the counter holder (11), the clamping lock device is designed to be detachable. 6. Clamping lock device according to one of the preceding claims, characterized in that the pivot element (2) is rotatably supported on the base body (1) via a manually removable pivot pin (9). 7. Clamping lock device according to one of the preceding claims, characterized in that the transverse pin (8) for supporting the pulling bow (4) can be manually removed from its position. 8. Clamping lock device according to claim 6 or 7, characterized in that the pivot pin (9) and the transverse pin (8) are designed as bolts with an axial fastening.