DK2586942T3

DK2586942T3 - THE STRAKER TO CONNECT A STUD BOLT

Info

Publication number: DK2586942T3
Application number: DK12189301.0T
Authority: DK
Inventors: Jörg Skopnik
Original assignee: Emka Beschlagteile Gmbh & Co Kg
Priority date: 2011-10-28
Filing date: 2012-10-19
Publication date: 2019-04-15
Also published as: DE102011054899A1; EP2586942A2; EP2586942B1; EP2586942A3; ES2719845T3; TR201905327T4; DE102011054899B4; PL2586942T3

Description

Bar guide set up for fastening on a stud bolt

Description

The invention relates to a bar guide for the flat band bar of a bar closure, which can be used in switch cabinets in particular, having a fastening arm having a recess for plugging the bar guide onto a stationary stud bolt, which is provided with an external thread and is used for fastening the bar guide on a component, and having a guide arm protruding from the fastening arm and forming an L shape of the bar guide, which guide arm has a channel holding and guiding the flat band bar on the side thereof facing away from the stud bolt. A bar guide with the previously mentioned features is known from DE 20 2008 005 452 Ul. Here, it is provided for fastening the bar guide on the stud bolt constructed on a component carrying the bar guide, that the L-shaped bar guide can be plugged by way of a fastening arm onto the stud bolt, wherein a plurality of holding tabs is arranged on the fastening arm distributed over the circumference of a recess set up for accommodating the stud bolt, which holding tabs protrude into the recess and can be bent resiliently onto the stud bolt counter to the plugging direction of the bar guide. A bearing surface of these holding tabs bears against the external thread of the stud bolt, and a lug engaging in a thread of the stud bolt is constructed in this bearing surface. Thus, when the bar guide is plugged onto the stud bolt, the holding tabs catch on the external thread of the stud bolt and fix the bar guide to the stud bolt as a result. To unmount the bar guide latched onto the stud bolt, the bar guide can be unscrewed by means of a rotational movement of the stud bolt provided with the external thread, wherein the lugs of the individual holding tabs engaging into the thread of the stud bolt move along the thread until the bar guide is freed from the stud bolt.

The known bar guide is also connected with the disadvantage that the latching of the bar guide by way of the fastening arm thereof onto the stud bolt requires a considerable effort because of the spring action of the holding tabs arranged around the stud bolt circumference and the engagement of the holding lugs constructed on the holding tabs into the threads. Consequently, a continuous mounting of large quantities of such bar guides leads to a correspondingly strong burdening of the relevant employees and the envisaged short mounting times can barely be maintained or realized over a relatively long period of time. A further bar guide with holding tabs for fastening the bar guide on a stud bolt is known from WO 2007/ 033 714 Al.

The invention is therefore based on the object of improving a bar guide with the features mentioned at the beginning such that both mounting on and unmounting from a stud bolt provided with an external thread are facilitated and in particular require less effort.

The achievement of this object including advantageous embodiments and developments of the invention results from the content of the patent claims, which follow this description.

In its basic idea, the invention provides that a stationary lateral bearing surface for the stud bolt is constructed on the side of the guide arm facing away from the channel and an additional lateral bearing surface for the stud bolt, opposite the stationary bearing surface with respect to the stud bolt axis, is provided in the region located between the fastening arm and the stationary bearing surface, which additional bearing surface is supported by a clamping rocker arranged such that it springs away from the stud bolt axis.

In a manner known per se, the bar guide is initially fastened on the stud bolt in the radial direction by plugging the recess constructed in the fastening arm thereof onto the stud bolt, insofar as the dimensions of the recess are adapted to the dimension of the stud bolt. Insofar as, for fastening the bar guide in the axial direction, the two bearing surfaces, which are opposite one another and fasten the stud bolt between them, are set up on the bar guide, the bearing surface of the clamping rocker arranged thereon deflects resiliently outwards from the stud bolt during the plugging of the bar guide onto the stud bolt, so that the bearing surface slips in a resilient and light manner over the threads of the stud bolt. In this case, the upper bearing surface only comes into contact with the stud bolt during the mounting path. In this respect, the effort required for plugging the bar guide onto the stud bolt is reduced considerably, because no force directed directly counter to the plugging direction is to be overcome. By contrast, the securing of the plugged bar guide against an axial pulling from the stud bolt is increased in that in this movement direction, the clamping rocker comes, by way of the bearing surface constructed on the same, respectively more strongly into engagement with the threads of the stud bolt with increasing pulling force, so that in the context of a use-related loading of the bar guide, securing against a slipping of the bar guide off of the stud bolt is improved. For unmounting, it is only necessary to lightly pull the clamping rocker outwards by hand and as a result lift the contact of the bearing surface arranged on the clamping rocker with the stud bolt. In this position of the clamping rocker, the bar guide can be moved in the direction of the stud bolt axis without great resistance and therefore pulled off of the stud bolt.

According to an exemplary embodiment of the invention, it is provided that the stationary bearing surface and the bearing surface constructed on the clamping rocker have a rounded shape in each case and encompass the stud bolt between them on a part of the circumference thereof.

According to a preferred embodiment of the invention, it may be provided that the stationary bearing surface and the bearing surface constructed on the clamping rocker are constructed in a semicircular manner in each case with a radius corresponding to the radius of the stud bolt, such that in the rest position of the clamping rocker when the bar guide is plugged onto the stud bolt, the two bearing surfaces together encompass the stud bolt completely.

In order to facilitate the handling for pulling off the clamping rocker outwards for unmounting the bar guide from the stud bolt, it is provided according to an exemplary embodiment of the invention that the clamping rocker is provided with an outwardly protruding actuating projection on the side opposite the bearing surface thereof.

For further improvement of the securing of the bar guide against being pulled off of the stud bolt, it can be provided according to an exemplary embodiment of the invention that the clamping rocker has a stop protruding downwards in the direction of the fastening arm, which stop delimits the movement path of the clamping rocker during loading of the bar guide directed counter to the plugging direction of the bar guide onto the stud bolt, in the sense of supporting the clamping rocker on the fastening arm. Thus, the correspondingly directed connection between the guide arm and the clamping rocker articulated thereon is also relaxed.

It can be provided that the bearing surface constructed on the clamping rocker is provided with ribbing catching with the threads of the stud bolt, wherein the security of the fastening of the bar guide on the stud bolt is improved by the positive fit brought about thereby.

In an expedient embodiment of the invention, the clamping rocker has a U-shaped form, wherein the bearing surface arranged thereon is constructed on the connecting web between the U legs of the clamping rocker, wherein the clamping rocker is resiliently fastened at the ends of its U legs, which laterally border the stud bolt and are constructed as spring arms, to the guide arm of the bar guide.

Insofar as it is provided according to an exemplary embodiment of the invention that the spring arms of the clamping rocker are constructed in one piece with the guide arm of the bar guide, this means that the bar guide as such can be manufactured in one piece as an injection-moulded part and can be realized by means of a simple and inexpensive mould.

For reasons of stability improvement, it can be provided that the recess constructed in the fastening arm is formed from two semicircular cuts, which are arranged in mutually offset planes in the fastening arm, which cuts together encompass the stud bolt when the fastening arm is plugged onto the stud bolt. A greater bearing stability of the bar guide on the stud bolt results in the region of the fastening arm owing to the offset arrangement of the two half shells constructing the recess in the fastening arm.

According to an alternative embodiment, it may be provided that the recess constructed in the fastening arm is constructed as a slot-like mount for the stud bolt, which is open in the direction towards the guide arm of the bar guide and closed on its opposite side by means of a rounding corresponding to the radius of the stud bolt. In the context of this design, the plugging of the bar guide onto the stud bolt by way of its fastening arm is facilitated, because the slot-like recess gives a greater play even in the case of a non-rectilinearly aligned placement of the bar guide on the stud bolt. On the other hand, when placing the bar guide, the stud bolt is clamped and guided between the rounding of the mount on the one hand and the stationary bearing surface constructed on the guide arm.

To facilitate the handling of the bar guide during the mounting thereof on the stud bolt, it can be provided that a pressure surface aligned parallel to the fastening arm is constructed on the free end of the guide arm, opposite the fastening arm, for the application of pressure for the bar guide when plugging the same onto the stud bolt.

An exemplary embodiment of the invention is reproduced in the drawing, which is described in the following. In the figures:

Fig. 1 shows a bar guide in a perspective view onto the guide ropes thereof,

Fig. 2 shows the bar guide according to Figure 1 in a perspective view onto the fastening ropes thereof,

Fig. 3 shows the bar guide mounted on the stud bolt of a component in a perspective view,

Fig. 4 shows the bar guide mounted on the stud bolt according to Figure 3 in a side sectional view.

As can be seen initially from Figures 1 and 2, the bar guide 10, which overall has an L-shaped construction, has a fastening arm 11 set up for support on a component 33 (Figures 3, 4) and a guide arm 12 protruding therefrom and set up for guiding a flat band bar 32 (Figures 3, 4). A slotlike mount 13, which is open in the direction towards the guide arm 12 and closed on the opposite side thereof by means of a rounding 14 corresponding to the radius of a stud bolt, is constructed in the fastening arm 11, using which mount the bar guide 10 can be placed onto a stud bolt 31. Insofar as the guide arm 12 is constructed overall in a U-shaped manner with two outer walls 34, a pressure surface 15 aligned parallel to the fastening arm 11 is arranged at the free end of the walls 34 protruding freely from the fastening arm 11, which pressure surface connects the walls 34 of the guide arm 12 to one another. A non-slip region 16 is constructed on the upper side of the pressure surface 15 by means of a suitable shaping, which non-slip region facilitates the handling of the bar guide 10 when pressing by way of the fastening arm 11 thereof onto a stud bolt 31. A projection 17 protrudes from the pressure surface 15 in the direction of the fastening arm 11 between the walls 34 of the guide arm 12, on which projection a stationary lateral bearing surface 18 for the stud bolt, facing away from the guide side of the guide arm 12, is constructed. The bearing surface 18 and the rounding 14 in the fastening arm 11 are arranged and aligned in such a manner that they accommodate and guide the stud bolt 31 between them during the plugging on of the bar guide 10, so that the bar guide 10 is thereby fastened on the stud bolt 31 in a radially immovable manner. A further bearing surface 22 for the stud bolt 31 is arranged in the region located between the stationary bearing surface 18 and the rounding 14 constructed in the fastening arm 11, which is carried by a clamping rocker 19. This clamping rocker 19 is constructed in a U-shaped manner with a connecting web 20 and lateral U legs 21, wherein the bearing surface 22 is constructed on the connecting web 20. The bearing surface 22 is also constructed with a radius corresponding to the radius of the stud bolt 31 used, so that the bearing surface 22 of the clamping rocker 19 together with the stationary bearing surface 18 encompasses the stud bolt 31 when the bar guide 10 is plugged on. To improve the adhesion between the bearing surface 22 and the stud bolt 31 provided with an external thread, the bearing surface 22 is provided with ribbing 23. The clamping rocker 19 is connected at the ends of the U legs 21 in an elastically resilient manner to the structure of the guide arm 12, wherein the connecting point is arranged opposite the bearing surface 22 with respect to the axis of the stud bolt 31.

As can be seen from Figure 2, the clamping rocker 19 is provided on the side facing away from its bearing surface 22 with an outwardly protruding actuating projection 24, by means of which the clamping rocker 19 can be lifted outwards for unmounting the rod guide and as a result the bearing surface 22 can be brought out of engagement with the stud bolt 31. Furthermore, the clamping rocker 19 has a stop 25 protruding downwards in the direction of the fastening arm 11 of the bar guide 10, which stop delimits the movement path of the clamping rocker 19 in the sense of supporting the clamping rocker 19 on the fastening arm when during loading of the bar guide 10, due to a flat band bar guided in it counter to the plugging direction, a corresponding pivot movement of the clamping rocker 19 in the direction towards the fastening arm 11 results.

Two hook structures 26 protruding in the direction of the fastening arm 11 are constructed on the guide side of the bar guide 10, which can be seen from Figure 1, on the pressure surface 15 forming the upper side of the bar guide opposite the fastening arm 11, which hook structures are set up for encompassing a flat band bar 32 inserted into the bar guide 10 (Figures 3 and 4). Two support parts 27 are arranged in the region of the fastening arm 11, which keep a distance from the underside of the fastening arm 11, so that the support parts 27 can deflect downwards. In this case, one guide surface 28 for the inserted flat band bar is constructed on the upper side of the support parts 27 in each case. One retaining lug 29 extending in the direction of the hook structures 26 is arranged on the front end of the support parts 27 in each case. Finally, freely protruding spring arms 30 are also constructed on the underside of the fastening arm 11.

As can be seen from Figures 3 and 4, the bar guide 10 mounted on a stud bolt 31 fastened on a component 33 supporting the bar guide 10 is pressed onto the stud bolt 31, wherein the stud bolt is guided through the slot-like mount 13 in the fastening arm 11 of the bar guide 10 and is fixed on its opposite side by the stationary lateral bearing surface 18. During this plugging movement, the clamping rocker 19 deflects away from the stud bolt by way of the bearing surface 22 constructed on it, so that the bearing surface 22 slides flexibly over the external thread of the stud bolt 31 during plugging. When the bearing position of the fastening arm 11 on the component 33 is reached, the spring arms 30 are brought into a plane with the fastening arm 11 and prestressed as a result, and this prestress likewise ensures an improved prestress of the bar guide 10 on the stud bolt 3 1.

As can further be seen from Figures 3 and 4, a flat band bar 32 is clamped between the hook structures 26 and the support parts 27 on the guide side of the guide arm 12, and in the process guided on the guide surfaces 28 of the support parts 27 and fastened by the retaining lugs 29 constructed on the same. During the mounting of the bar guide, either a plurality of bar guides can be pushed onto the flat band bar 32 and aligned in such a manner that the bar guides 10 together with the flat band bar 32 accommodated by them are pressed onto the correspondingly arranged stud bolts 31. Or an alternative mounting provides that initially the bar guides 10 are pressed onto the stud bolts 31 in each case and the flat band bar 32 is subsequently clipped into the guide side of the guide arm 12, wherein the resiliently constructed support parts 27 can yield correspondingly.

If the bar guide 10 mounted on the stud bolt 31 including the flat band bar 32 is loaded in the sense of pulling off from the stud bolt, then the bearing surface 22 of the movable resilient clamping rocker 19 engages more strongly into the external thread of the stud bolt 31 owing to the lever action of the clamping rocker 19, wherein this engaging movement is delimited by the stop 25. To unmount the bar guide 10, the clamping rocker 19 correspondingly conversely merely needs to be pulled outwards off of the stud bolt 31 by acting on the actuating projection 24, and in this release position of the bearing surface 22 from the stud bolt, the bar guide 10 can be removed from the stud bolt 31.

The features of the subject of these documents disclosed in the previous description, the patent claims, the abstract and the drawing may be important individually and in any desired combinations with one another, for the realisation of the invention in its various embodiments.

Claims

A rod guide (10) to the flat belt rod (32) of a rod closure, particularly useful in coupling cabinets, which has a fastening arm (11) with a recess (13) for connecting the rod guide (10) to a stationary stud bolt ( 31), which is provided with an external thread and is used for attaching the rod guide (10) to a component and with a guide arm (12) protruding from the fixing arm (11) and forming an L-shape of the rod guide (10), said guide arm having a channel holding and guiding the flat belt rod (32) on the side facing away from the stud bolt (31) characterized in that a stationary lateral bearing surface (18) for the stud bolt (31) is constructed on that side of the the guide arm (12) facing away from the channel and a further lateral bearing surface (22) of the stud bolt (31) opposite the stationary bearing surface (18) relative to the axis of the stud bolt are provided in the region between the attachment arm (11) and the stationary bearing surface (18), which additional bearing surface is supported by e n clamp flip-flop (19) arranged so that it springs away from the axis of the stud bolt.

The rod guide according to claim 1, characterized in that the stationary bearing surface (18) and the bearing surface (22) constructed on the clamping flip-flop (19) have a rounded shape in each case and comprises the stud bolt (31) between them on a part of the the circumference thereof.

The bar guide according to claim 1, characterized in that the stationary bearing surface (18) and the bearing surface (22) constructed on the clamping flip-flop (19) are constructed in a semi-circular manner in each case with a radius corresponding to the radius of the stud bolt (31). so that, in the resting position of the clamping rocker (19), when the rod guide (10) is mounted on the stud bolt (31), the two bearing faces (18, 22) comprise the stud bolt (31) completely.

The bar guide according to one of claims 1 to 3, characterized in that the clamping flip-flop (19) is provided with a protruding projection (24) on the side opposite the bearing surface (22).

The bar guide according to one of claims 1 to 4, characterized in that the clamping flip-flop (19) has a stop (25) which projects downwards in the direction of the locking arm (11), which stops the movement of the clamping flip-flop (19) under load of the rod-guide (10). ) directed to the rod guide (10) connection direction of the stud bolt (31) in the sense of supporting the clamping point (19) of the fastening arm (11).

The bar guide according to one of claims 1 to 5, characterized in that the bearing surface (22) constructed on the clamping flip-flop (19) is provided with a rib (23) which engages the threads of the stud bolt (31).

The bar guide according to one of claims 1 to 6, characterized in that the clamping flip-flop (19) is U-shaped and the bearing surface (22) located on this bearing surface is constructed on the connecting bridge (20) between the U-legs (21) of the clamping flip-flop (19). ), wherein the clamping flip-flop (19) is resiliently attached to the ends of its U-legs (21), which laterally border the stud bolt (31) and are constructed as spring arms, to the control arm (12) of the rod guide (10).

The bar guide according to claim 7, characterized in that the spring arms of the clamping rocker (19) are constructed integrally with the guide arm (12) of the bar guide (10).

The bar guide according to one of claims 1 to 8, characterized in that the recess constructed in the attachment arm (11) is formed by two semi-circular sections arranged in mutually displaced planes in the attachment arm (11) which together comprise the stud bolt (31) when the attachment arm (11) is mounted on the stud bolt (31).

The bar guide according to one of claims 1 to 8, characterized in that the recess constructed in the fastening arm (11) is constructed as a slot-like recorder (13) for the stud bolt (31) which is open in the direction of the guide rod (12) of the bar guide (10) and closed on its opposite side by means of a rounding (14) corresponding to the radius of the stud bolt (31).

The bar guide according to one of claims 1 to 10, characterized in that a pressure surface (15) directed parallel to the fastening arm (11) is constructed on the free end of the guide bar (12) opposite the fastening arm (11) for applying pressure to the bar guide (10) when connected to the stud bolt (31).