FI58667B - FOUNDATION FASHION FASTHAOLLNING AV EN RAEL VID ETT UNDERLAG - Google Patents

Description

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Patent and register release / 44) Date of issue of the declaration. -

Patent · och registerstyrelaen Amekan utiagd och uti.ikrtft * n public · rad 28.11.80 (32) (33) (31) Pyydetty «uolktu * —Begird prlorltat 12.06.70

Sweden-Sverige (SE) 8l62 / 70 (71) Lesjöfors Aktiebolag, 680 96 Lesjöfors, Sweden-Sverige (SE) (72) Alf Lennart Borup, Bromma, Karl Rune Hamrin, Lesjöfors, Sweden-Sverige (SE) ilk) Oy Heinänen Ab (5 * 0 Device for flexibly holding the rail to the base - Anordning för fjädrande fasthällning av en räl vid ett underlag

For resiliently holding the rail to the base, it is known to use flexible rail nails inserted into the base, which immediately engage the rails1, or flexible clamping members tensioned between the rigid bracket and the rail leg. All of these devices have the disadvantage that the useful elastic path is short, i.e. the spring characteristic is steep so that the manufacturing and installation variations can cause considerable variations in the force at which the rail is held in place on the base, in addition to the between the suction and the rail, can easily be crushed during installation due to the fact that the load on the spacer is not removed during installation. Due to the short elastic path, the elastic properties of the device also change during the installation and removal of the rail, which is why the spring member often has to be replaced when the rail is re-installed.

A holding device with a long elastic path, i.e. a relatively poorly worn spring characteristic, is also known. This device has a bracket made of a resilient material with an end portion anchored to the base, adjacent to the rail foot, a spacer projecting upward from the base and bent away from the rail, and an end portion bent into a holder that held the gripper to the upper side of the rail leg against this. However, this device has a flexible bracket and a clamping member formed in such a way that the installation and removal of the rail is complicated and is not suitable for mechanized installation.

The present invention is directed to the latter type of device and eliminates the drawbacks associated therewith. This is achieved in such a way that, according to the invention, the device is characterized in that the end part of the fastener bent into a holder is open towards the rail.

U, with an upper branch facing the rail and a lower branch which becomes an intermediate part of the bracket.

Such a design of the device according to the invention makes it easy to twist the arms of the U-shaped holder by means of a tool and move it somewhat away from the rail and then place the clamping member on the open U-end side of the holder, i.e. on the side of the holder, whereby the clamping member rests in the unloaded state the grip between the tool and the holder so that any electrical insulation spacer • fitted to the clamping member is carefully loaded without risk of crushing. Due to the large elastic path of the holder, there is no risk of changing the spring properties of the bracket when installing or removing the rail, and the holding force generated on the rail by the device remains essentially constant regardless of the tolerances of the parts.

According to a further development of the invention, the manufacture of the fastener and the achieved spring properties become particularly advantageous when the fastener is formed of two spring leaves which abut each other side-to-side in the base-anchored end portion of the fastener 3,58667 and in the end part of the fastener bent, but bent wherein the second spring leaf has a large abutment surface against the base in the intermediate part of the bracket.

The invention will be described in more detail with reference to the accompanying drawings.

Fig. 1 shows a perspective view of a device according to the invention with a bracket formed of two spring leaves.

Fig. 2 shows a vertical section and partly from the side of another embodiment of the device according to the invention with a bracket formed of a single spring rod, thereby showing a tool for acting on the bracket when mounting the rail.

Fig. 3 shows a top view of the device according to Fig. 2 with the tool deviated. '\'

Fig. 4 shows the spring characteristic of the bracket according to Fig. 1.

In Figure 1, the rail 2 is resiliently fastened to the base 1 by means of a resilient fastener 3-5 and a clamping member 6. The bracket shown in Figure 1 consists of two spring leaves 4. These spring leaves abut each other against the side surface in an end part embedded and anchored in a base 1, which may be concrete, iron, wood or other suitable material. The second spring leaf has an intermediate part 5 which protrudes a considerable distance upwards from the base 1 and is then bent away from the rail 2. The second spring leaf has an intermediate part 5 which, immediately protruding up from the base 1, is bent away from the rail 2 and after a certain distance along the upper side of the base is is bent obliquely upwards to the second spring leaf. The intermediate parts 5 of both spring leaves are thus bent apart from each other, and the intermediate part 5 of the second spring leaf has a large abutment surface against the base 1. From the point where the intermediate parts 5 meet at a distance from the base 1, the spring leaves44 become the end part of the bracket, where the spring leaves abut each other against the side surface. This end part is bent into a holder 3, which is in the form of a U open towards the rail 2, with an upper branch facing the rail and a lower branch which becomes intermediate parts 5 of the spring leaves 4.

4,58667

The clamping member 6 shown in Fig. 1 is an approximately U-shaped round rod steel with bent crotch ends which engage the U-shaped holder 3 of the bracket, while the transverse part of the U-shaped clamping member is preferably provided with an electrically insulating sleeve 7. , rests on the upper side of the 2 feet of the rail and remains resiliently pressed against it by means of a resilient bracket. Instead of the insulating sleeve 7, an insulating insert can be used between the clamping member 6 and the rail leg.

Both spring leaves, which form the fastener in Fig. 1, have a relatively long, useful elastic path, i.e. a relatively poorly worn spring characteristic, as shown in Fig. 4, due to the shape shown.

In the embodiment shown in Figures 2 and 3, the flexible bracket is formed of a single rod of spring material. The rod has an end part anchored to the base 1 ', an intermediate part 5' projecting upwards from the base and bent away from the rail 2, and an end part bent into a holder 3 'in the form of a U-shaped open upper rail-facing branch and a lower branch which becomes an intermediate part 5 ». The holder 3 'engages at one end a clamping member 6' # which in this case consists of a bent leaf spring and one end of which is provided with an electrically insulating spacer 7 'and rests with it on the upper side of the foot of the rail 2. In addition, spacer plates Θ and 9 made of electrically insulating material are shown between the rail 2 and the base V and the flexible fastener, respectively.

Figure 2 also shows a simple tool 10 for installing and removing the tightening member 5 '. This tool has a lever 11 with a stop 12 which engages the end of the upper arm of the holder 3 '. The lever 11 also has a pin 13 for anchoring the rope loop 14, to which the lever 15 resting on the rope loop against the rail 2 can engage. Using the lever 15, the arms of the holder 3 'can be twisted apart while moving the holder slightly away from the rail so that the other end of the clamping member 6' can be pushed freely into the holder 3 'either laterally (longitudinally of the rail 2) or through the open U-mouth of the holder. to the position shown in Figure 2. When the grip of the tool is released, the flexible bracket causes the clamping member 6 'to grip against the rail foot. Due to the elastic properties of the fastener, the return can take place smoothly without the risk of crushing the spacer 7 '.

Claims (2)

5 58667 The elastic properties of the bracket do not change when the tool is used as described above during installation or removal work. The same type of tool can be used in connection with the embodiment shown in Figure 1. A device for resiliently holding a rail (2) to a base (1), 1 *), the device having a bracket (3-5J 3 ', 5') made of a resilient material with an end portion anchored to the base, next to the rail leg, upwards from the base a projecting part (5.5 ') protruding and bent away from the rail and an end part bent into a holder (3.3'), the holder grips the clamping member (6.6 '), which protrudes from the holder to the upper side of the rail leg and remains resiliently pressed against it, characterized by , that the end part of the bracket (3-5,3 ', 5') bent into a holder (3,3 ') has the shape of an open U towards the rail (2), with an upper branch facing the rail and a lower branch which becomes an intermediate part of the bracket ( 5.5 '). Device according to claim 1, characterized in that the bracket (3-5) is formed of two spring leaves (4) which abut each other against the side surface in the bracket end portion anchored to the base (1) and in the bracket end portion bent into a holder (3), but is bent apart in the intermediate part of the bracket (5), whereby the second spring leaf has a large abutment surface against the base in the intermediate part of the bracket.