WO2004038234A1

WO2004038234A1 - Clamping holder

Info

Publication number: WO2004038234A1
Application number: PCT/EP2003/011630
Authority: WO
Inventors: Wayne Ryan
Original assignee: Pauli + Sohn Gmbh Metallwaren
Priority date: 2002-10-23
Filing date: 2003-10-21
Publication date: 2004-05-06
Also published as: AU2003274049A1

Abstract

The invention relates to clamping holders (10) for fastening panes of glass, for example, between two posts. Said clamping holder (10) comprises two clamping jaws (1, 2), the legs (3, 4) of which can be braced against each other on a clamping holder base (5) by means of at least one clamping screw. The clamping holder base (5) is provided with a fastening hole (14) while the legs (3, 4) of the clamping jaws are provided with pockets (18, 19) for accommodating elastic intermediate pads (40, 41), the surface of which rests upon the plate. Said fastening hole (14) is wider than it is high in order to compensate misalignments of the boreholes in the post while the surfaces of both intermediate pads (40, 41) are aligned in an inclined manner such that the clamping gap tapers towards the front clamping area in order to compensate the drop in the clamping pressure.

Description

Title: Klem Halter

The invention relates to a clamp holder for fastening plates, in particular glass panes, between two posts, with two clamping jaws, the spaced-apart clamping jaw arms of which can be clamped against one another on a clamp holder base by means of at least one clamping screw.

In the case of generic clamp holders, the clamp holder base has a fastening hole and can be screwed onto the post by means of a fastening screw passing through the fastening hole and / or the clamping jaw arms have, on their inner sides, receiving pockets for elastic intermediate cushions which rest on the plate with their surface.

Generic clamp holders have been marketed by the applicant for decades in different embodiments and different construction principles for guiding the clamping jaws into one another and the functioning of the clamping mechanism for clamping the two clamping jaw arms together. With the clamp holders, plates, in particular glass plates, are to be fastened between the two spaced-apart posts, where possible no bending forces or the like with the clamp holders in the glass plate. should be initiated. In the case of posts on railings, stairs or parapets in particular, the holes for fastening the clamp holder must be drilled on site on the post. Basically, this bears the risk that the drilled holes drilled on the two spaced-apart posts to which the clamp holders are to be fastened are not exactly aligned with one another and / or the threads in the bores are slanted are cut, whereby a bending-free fastening of the plate between the posts cannot be guaranteed. The problem is particularly great when the posts are round tube posts, since the curvature of the tube increases the influence of a small lateral misalignment of the bore hole.

A generic clamp holder is known for example from DE 93 06 824 U by the applicant. In the clamp holder according to DE 93 06 824 U, projections on one clamping jaw engage in sockets on the other clamping jaw, and the sockets are to minimize the installation space of the clamp holder and to minimize the distance of the plate from the supporting structure without a space on the rear wall of the associated clamping part molded, provided with the sockets for the threaded bores and at the same time they have guide recesses in the transverse region of the sockets for the projections arranged on the other clamping jaw. Both the recess for receiving the protrusion on one jaw and the protrusion on the other jaw are provided with inclined surfaces in order to tilt one of the two jaws slightly when they are clamped together, thereby causing the clamping surfaces in the front jaw region to be brought closer together than one another in the rear area of the jaws. By tilting the one jaw, greater pressure is exerted on the clamped plate in the front clamping surface area in order to compensate for a drop in clamping pressure caused by wear or fatigue. The inclined surface in the recess of the one clamping jaw is only formed on the bottom thereof, so that the tilting of the clamping jaws only occurs when the clamping jaws are clamped. The tilting of the one clamping jaw relative to the other clamping jaw leads to a comparatively high load on the clamping screws and the threads for the clamping screws, since the clamping screws are subjected to bending along their threaded shank. The object of the invention is to provide a clamp holder in which the aforementioned problems do not occur and which is particularly suitable for use on round tubular posts.

This object is achieved in that the width of the mounting hole from one to the other jaw is greater than the height of the mounting hole. Due to the larger width of the fastening hole, a lateral offset due to oblique or off-center drilling on the post can be compensated for by shifting the axial position of the fastening screw relative to the base of the clamp holder. In the simplest and most practical embodiment, the fastening hole is designed as an elongated hole, which is preferably extended from the center of the clamping gap to both clamping jaws in order to be able to compensate for an offset in both directions.

In the case of clamp holders which have a round tube connection adapted to the curvature of the post on the back of the clamp holder base, it is particularly advantageous if, at least when the borehole is located off-center, a washer formed with a curved surface is arranged between the head of the fastening screw and the abutment shoulder of the fastening hole to prevent with the curvature of the washer that the pressure surface of the fastening screw pushes the clamp holder in a position aligned with the axis of the borehole in the post and thereby bending forces are introduced into the plate despite the elongated hole via eccentrically aligned clamp holders. The intermediate washer expediently has a penetration cutout designed as an elongated hole. In one embodiment, the underside of the washer can be flat and the radius of curvature of the top of the washer is larger than the radius of curvature of the round pipe connection. Alternatively, the underside of the washer can be flat and the top has an elliptically or cylindrically curved surface.

With regard to the clamping of the plate with an overall simple and inexpensive construction of the clamp holder, it is particularly advantageous if the clamping jaw arms have receiving pockets for elastic intermediate cushions on their mutually facing inner sides, the bottoms of the receiving pockets being arranged at an angle α such as obliquely to the inner sides of the clamping jaw arms, that the distance between the bases decreases with increasing distance from the clamp base. As a result of this configuration, the clamping pressure that can be applied with the clamping jaw arms in the front clamping area is greater than the clamping pressure in the rear clamping area near the base of the clamp holder, which results in an increase in the holding force and a compensation of a possibly occurring drop in clamping pressure. The angle α can be approximately 0.15-3 °, preferably approximately 0.2-1.5 °.

Another object of the invention is to provide clamp holders in which a high holding force and compensation for any clamping pressure drop that may occur are achieved without additional manufacturing outlay and additional stress on the clamping screw.

In particular, this object is achieved according to the invention in that the distance of the surface of at least one, preferably both, intermediate cushions from the inside of the associated clamping jaw increases with increasing distance from the clamping jaw base and at the same time the distance between the surfaces of the intermediate cushions decreases with increasing distance. In the clamp holders according to the invention, the higher clamping pressure in the front clamping surface area is therefore not achieved by tilting the clamping jaws towards one another, but rather Surfaces of both intermediate cushions are so inclined from the outset that the clamping gap tapers towards the front clamping surface.

In a preferred embodiment of the clamp holder according to the invention, the bottom of the receiving pocket is formed or curved or stepped in at least one, preferably in both clamp jaw arms, obliquely to the central plane of the clamp holder or obliquely to the inside of the clamp jaw arms, so that the intermediate pads, which are preferably made of ethylene-propylene Terpolymer (EPDM) consist, can be cut out or punched out of plates with constant thickness. It is particularly preferred here if the bottom of the receiving pocket in at least one of the clamping jaw arms, preferably in both clamping jaw arms, is designed to be inclined by an angle α to the central plane of the clamping holder or to the inner sides of the clamping jaw arms, while the inner sides facing the clamping gap and the plate to be clamped the jaw arms are aligned parallel to each other and to the plate surface.

Alternatively, the surface of the intermediate cushions could be designed to be inclined to the underside of the intermediate cushions by the angle .alpha. Further alternatively, a wedge-shaped widening intermediate layer made of preferably inelastic material could be arranged between the bottom of the receiving pocket and the underside of the intermediate cushion in order to achieve the inclined position of the surface of the intermediate cushion over the wedge shape of the intermediate layer. The intermediate layer can preferably widen by the angle α. In all embodiments, it is particularly advantageous if the angle α is approximately 0.15-5 °, preferably approximately 0.2-1.5 °. The oblique arrangement of the invention Intermediate padding due to the inclined position of the bottoms of the receiving pockets has the particular advantage that the guide recesses in one jaw and the guide projections in the other jaw can cause a plane-parallel, tilt-free movement of the jaw arms to one another when tensioning and can therefore be aligned parallel to the clamping screw axis.

Further advantages and configurations of the clamp holder according to the invention result from the following description of exemplary embodiments shown schematically in the drawing. The drawing shows:

Figure 1 schematically shows a horizontal section through a clamp holder attached to a round tube. and

FIG. 2 shows a view of the rear of the clamp holder from FIG. 1;

3 shows a holder according to the invention according to a second embodiment in side view;

4 shows the holder from FIG. 3 in plan view; and

Fig. 5 schematically shows a horizontal section through a clamp holder attached to a round post according to the second embodiment.

The clamp holder, designated overall by 10 in FIGS. 1 and 2, has two spaced-apart clamping jaws 1, 2 with projecting clamping jaw arms 3, 4 for fastening a plate (not shown), in particular a glass pane, between two posts such as railing or parapet posts which the upper in Fig. 1 jaw 1 has in one piece with the jaw arm 3 connected clamp holder base 5, which is screwed by means of a fastening hole 14 through a fastening screw 20 to the round tube post 21. The clamp holder 10 has on the rear side a round tube connection 7 adapted to the radius of curvature of the round tube post 21, which is largely formed by the rear side 8 of the clamping jaw 1 and in a smaller partial area by the rear side 9 of the clamping jaw 2. As can be clearly seen in FIG. 2, the parting plane 11 runs between the two clamping jaws 1, 2 through the round pipe connection 7. Vertically to the parting plane 11, the two clamping jaws 1, 2 can be clamped against one another by means of two clamping screws (not shown in detail) arranged on the screw axes 12, 13, the clamping jaws 1, 2 projecting into the matching guide recesses by means of the parting plane 11 on the clamping jaw 2 the clamping holder base 5 of the jaw 1 engaging guide projections (not shown) are connected to one another in such a way that the jaw arms 3, 4 are moved parallel to one another.

The fastening screw 20 passes through a fastening hole 14 in the clamp holder base 5, the width B of which is approximately 50% greater than its height H and which is designed as an elongated hole in the exemplary embodiment shown. The longer width B extends from one to the other jaw 1, 2. The height H of the fastening hole 14 is preferably adapted to the diameter D of the fastening screw 20 with little play, so that the clamp holder 10 fixed on the round tube post 21 is exactly positioned in the vertical direction, but can be adjusted transversely thereto. The increase in the width B of the elongated hole 14 extends from the center plane between the two jaw arms 3, 4 to both sides in order to be able to compensate for a lateral offset of the screw hole 22 in the round tube post 21 if necessary. Between the Cylindrical screw head 23 of the fastening screw 20 and the contact shoulder 16 surrounding the elongated hole 14 and pointing towards the clamping gap 15 between the two jaw arms 3, 4 on the clamping holder base 5, an intermediate washer 30 is arranged, the underside 31 of which is flat and the upper side 31 of which is cylindrical or elliptically curved. The intermediate washer 30 is provided with a through opening 33 designed as an elongated hole. The intermediate washer 30 can consist of the same material as the clamping jaws 1, 2 and can be poured together with them in a casting mold, the curvature of the upper side 32 of the intermediate washer 30 being adapted to the radius of curvature of the pipe connection 7. The intermediate washer 30 is arranged in particular between the screw head 24 and the contact shoulder 16 if, when drilling or tapping the screw hole 22 in the round tube post 21, a deviation from the axially aligned line with the fastening hole on the opposite round tube post occurs. The elongated hole 14 allows in this case due to its larger width B that the clamp holder 20 can be mounted exactly axially aligned with a clamp holder arranged on the other transverse side of the glass plate despite the inclination of the fastening screw 20 and thus no bending stresses by an oblique fastening of the clamp holder in the plate will be initiated. The washer with the curved surface prevents the pressure surface of the screw head 24 from aligning the clamp holder 10 with the axial position of the fastening screw 20.

As can be seen in FIG. 1, both clamping jaw arms 3, 4 have at their spaced-apart inner sides 15, 17 which delimit the clamping gap 35 in parallel, receiving pockets 18, 19, the bottoms 18 ', 19' of which are angled at an angle α such that the distance between the bases 18 ', 19' from one another decreases with increasing distance from the clamp holder base 5 device. As a result, the intermediate pads 40, 41 made of elastic material such as, in particular, ethylene-propylene terpolymer (EPDM), which are fastened in the receiving pockets 18, 19, are arranged obliquely in order to apply a greater clamping pressure to the plate clamped in the clamping gap 35 in the front clamping area of the clamping jaw arms 3, 4 than in the rear clamping area near the clamping holder base 5. The angle α on both clamping jaw arms 3, 4 can be in particular between approximately 0.2 ° and 1.5 ° in order to cover the entire clamping area of the clamping jaw arms 3, 4 or intermediate pads 40, 41 to ensure a clamping contact with the plate.

The embodiment in FIGS. 1 and 2 shows a clamp holder with round tube connection and washer. If the fixing hole is exactly aligned in the round tube post, the installation of the washers is not necessary. The back of the clamp holder could also be flat to attach the clamp holder to square posts.

The clamp holder, designated overall by 50 in FIGS. 3 to 5, according to a second exemplary embodiment, comprises two clamping jaws 51, 52, preferably made of cast parts, of which one clamping jaw 51 has a base part 55, in which the screw-in thread 79 for two clamping screws 75 are formed, with which the two clamping jaws 51, 52 can be clamped against one another in the region of the clamping jaw base 55 in order to clamp a glass plate (not shown) in the clamping gap 85 between the inner sides 65, 67 of the clamping jaw arms 53, 54 projecting beyond the base part 55. Both clamping jaw arms 53, 54 are provided on the inner sides 65, 67 with here rectangular recesses as receiving pockets 68, 69 for intermediate pads 90, 91, which consist of elastic ethylene-propylene terpolymer (EPDM) and directly on the plate sides of the Glass pane fit to an immediate Avoid contact between the clamp holders and the glass pane and consequently avoid damaging or breaking the glass plate despite the clamping.

3 and 4 can be clearly seen, the one jaw 51 is fixed to the base part 55 on a post, relative to which the jaw 52 is movable. The clamping jaw 52 is guided by means of suitable, here U-shaped guide projections 76 in guide recesses 77 in the base part 55 such that the two clamping jaw arms 53, 54 with their inner surfaces

67, 65 can be moved exactly plane-parallel to one another without a tilt between the two jaw arms 53, 54 or their inner surfaces 67, 65. In order to maintain a high clamping pressure in the area of the front clamping surfaces of the clamping jaws 53, 54, i.e. According to the invention, the bottom 68 ', 69' of the two receiving pockets can be achieved in the areas at a great distance from the clamp holder base 55

68, 69 formed in the jaw arms 54, 53 obliquely to the inner surfaces 65, 67 of the jaw arms 54, 53 or to the central plane of the clamping gap 85. The distance A between the surfaces 92, 93 of the intermediate pads 90, 91 tapers on both sides uniformly with increasing distance from the clamp holder base 55 and decreases in the front clamping area to the distance A ', while the distance between the inner sides 65, 67 along the entire clamping gap 35 remains constant. The inclination of the bottom 68 ', 89' of the receiving pockets 68, 69 relative to the inner sides 67, 65 is in each case approximately 1 °.

FIG. 5 shows the clamp holder 50 in the assembled state on a round post 71, the angle of inclination γ of the surfaces 92, 93 of the intermediate pads 90, 91 being exaggerated to clarify the inventive concept. From Fig. 5 it can also be clearly seen that both elastic intermediate pads 90, 91 each one between the front and rear clamping surface have constant thickness; the angle γ therefore corresponds to the inclination of the bottom 68 'or 69' of the respective receiving pockets 68 or 69 relative to the inner sides 67, 65. FIG. 5 also shows the fastening screw 70 which passes through a fastening hole 54 in the base part 55 of the clamping jaw 51 ,

FIGS. 3 to 5 only illustrate the idea of the invention with the preferred embodiment of inclined receiving pocket bottoms within both clamping surfaces or clamping jaws with simultaneous bracing of the two clamping jaws 51, 52 to one another. However, an inclined position of the receiving pockets in the clamping surfaces can also be retrofitted to the existing clamp holders, e.g. by wedge-shaped intermediate layers are attached below the underside of the intermediate cushion.

From the foregoing description, those skilled in the art will appreciate a number of modifications which are intended to fall within the scope of the appended claims.

Claims

Expectations :

Clamp holder for fastening plates, in particular glass panes, between two posts, with two clamping jaws, the spaced-apart clamping jaw arms of which can be clamped against one another on a clamp holder base by means of at least one clamping screw, the clamp holder base having a fastening hole and being screwable to the post by means of a fastening screw passing through the fastening hole, characterized in that the width dimension (B) of the fastening hole (14) from one to the other clamping jaw (1, 2) is greater than the height (H) of the fastening hole (14).

Clamp holder according to claim 1, characterized in that the fastening hole is an elongated hole (14).

Clamp holder according to claim 1 or 2, characterized in that the clamp holder (10) has on the back a round pipe connection (7) adapted to the curvature of the round tube post (21) and between the head (24) of the fastening screw (20) and the contact shoulder ( 16) of the fastening hole (14), an intermediate washer (30) formed with a curved surface (32) is arranged.

Clamp holder according to claim 3, characterized in that the intermediate washer (30) has a through opening (33) designed as an elongated hole.

Clamp holder according to claim 3 or 4, characterized in that the underside (31) of the washer (30) is flat and the radius of curvature of the top (32) of the washer (30) is greater than the radius of curvature of the round tube connection (7). Clamp holder according to claim 3 or 4, characterized in that the underside of the washer is flat and the upper side has an elliptically or cylindrically curved surface.

Clamp holder according to one of claims 1 to 6, characterized in that the clamping jaw arms (3, 4) on their mutually facing inner sides (15, 17) receiving pockets

(18, 19) for elastic intermediate pads (40, 41), the bottoms (18 ', 19') of the receiving pockets (18, 19) at an angle () so inclined to the inner sides

(15, 17) of the clamping jaw arms (3, 4) are arranged in such a way that the distance between the bases (18 ', 19') decreases with increasing distance from the clamping holder base (5).

Clamp holder according to claim 7, characterized in that the angle (α) is approximately 0.15-3 °, preferably approximately 0.2-1.5 °.

Clamp holder for fastening plates, in particular glass panes, between two posts, with two clamping jaws, the spaced-apart clamping jaw arms of which can be clamped against one another on a clamping holder base by means of at least one clamping screw by clamping the plate, and on the inside of which there are receiving pockets for elastic, with their surface on the plate have adjacent intermediate pads, characterized in that the distance of the surface (92, 93) of at least one, preferably both, intermediate pads (40, 41; 90, 91) from the inside (15, 17; 67, 65) of the associated jaw arm (3, 4; 53, 54) increases with increasing distance from the clamp holder base (5; 55) and at the same time the distance (A) between the surfaces (92, 93) decreases.

10. Clamp holder according to one of claims 7 to 9, characterized in that the bottom (18 ', 19'; 68 ', 69') of the receiving pocket (18, 19; 68, 69) obliquely to the central plane of the clamp holder (10th ; 50) or to the inside (15, 17; 67, 65) of the jaw arm (2, 3; 52, 53) or curved or stepped.

11. Clamp holder according to one of claims 7 to 10, characterized in that the bottom (18 ', 19'; 68 ', 69') of the receiving pocket (18, 19; 68, 69) in at least one of the jaw arms (2, 3rd ; 52, 53), preferably in both jaws, is inclined by an angle (α; γ) to the central plane of the clamp holder (10; 50) and / or the inner sides (15, 17; 67, 65).

12. Clamp holder according to one of claims 7 to 11, characterized in that the surface of the intermediate pads to the bottom of the intermediate pads by the angle (α; γ) is formed inclined.

13. Clamp holder according to one of claims 7 to 12, characterized in that a wedge-shaped widening intermediate layer of preferably inelastic material is arranged between the bottom of the receiving pocket and the underside of the intermediate pads.

14. Clamp holder according to one of claims 7 to 13, characterized in that the intermediate cushion or the intermediate layer widens by the angle.

15. Clamp holder according to one of claims 9 to 14, characterized in that the angle (γ) is approximately 0.15-5 °, preferably approximately 0.2-1.5 °.

6. Clamp holder according to one of claims 7 to 15, characterized in that the guide recesses in one jaw and the guide projections in the other jaw cause a plane-parallel, tilt-free movement of the jaw arms to each other when tensioning.