Assembly System

Inactive Publication Date: 2009-02-12
ISL MEDIA SINGAPORE PTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]It is an object of the present invention to provide an assembly system which is universally suitable for holding flat bodies, offers the highest possible strength at the connecting points of the profiled bars, has a long service life, withstands any outdoor exposure, and can be manufactured and assembled quickly and at low cost.
[0009]It is advantageous to increase the width of certain sections of the expansion joint so that openings are provided for the introduction of the spreading elements. The wider sections can be asymmetric with respect to the axis of the expansion joint, as a result of which the clamping force acquires a horizontal component in addition to a vertical component.
[0010]It is also advantageous for at least parts of the lateral surfaces of the clamping channel to include a first ribbing and for at least parts of the external clamping surfaces of the connecting element to include a second ribbing, which extends transversely to the first ribbing, so that, as a result of the clamping operation, a type of permanent cold-weld joint is produced between the lateral surfaces of the clamping channel and the external clamping surfaces of the connecting element. In terms of the technical means required, ribbing of this type is easy to produce. The dimensions of the first and second ribbings are such that, when the ribbings are clamped against each other at essentially a right angle, a very strong non-positive connection is achieved. Depending on the material, the longitudinal and transverse ribs of the first and second ribbings will give way slightly as a result of deformation when they are pressed together.
[0011]The spreading element may include a body-bound rivet, a grooved drive stud, a screw, or the like. These types of connecting components are available at very low cost and in a wide variety of sizes and materials.
[0012]It is advantageous for the spreading element to be made of high-grade steel. It is preferable for the profiled bars and the connecting elements to be made of the same material, preferably aluminum. As a result, when the longitudinal and transverse ribs of the corresponding ribbings are pressed together, an especially strong joint is obtained by the production of a strong non-positive connection. Furthermore, aluminum profiles can be produced quickly and at low cost. In particular, the production of the connecting elements can be adapted flexibly to the depth of the clamping channel. Alternatively, as an example, the profiled bars and the connecting element can be made out of plastic.
[0014]It is also advantageous, furthermore, for two profiled bars with straight ends to be connected perpendicularly to each other and for at least one profiled bar to have two opposing projecting strips which project into the clamping channel. These strips are then able to engage in a groove located in the area of the external clamping surfaces. As a result, it is possible not only to connect the end surfaces of profiled bars to each other but also to connect the end surface of one profiled bar to the open side of the clamping channel of the other profiled bar. A connection of this type can be made permanent by providing a strong non-positive connection, or it can be made so that the one bar can slide longitudinally along the clamping channel of the other bar.

Problems solved by technology

These types of assembly systems suffer from the disadvantage that the retaining force with which the electrical or electronic device is held is limited at the connecting points.
For outdoor use and for heavy loads, these types of assembly systems are unsuitable due to the intrinsic weight of the device to be supported.

Method used

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second embodiment

[0034]FIG. 5 shows two profiled bars 2 arranged at a 90° angle to each other and formed to hold a flat body. Two profiled bars 2 are permanently connected to each other by an angle-shaped connecting element 6. Spreading elements 12 are introduced at three points into expansion joint 10 of connecting element 6 to produce the clamping effect, one in each arm or sidepiece and one in the corner area of connecting element 6. In the second embodiment shown in FIG. 5, profiled bars 2 are beveled 45° at their ends, which is half of the angle between the two bars. As a result of this beveling, clamping channel 4 acquires a slanted open end, into which the angle-shaped connecting element 6 is introduced when assembly system 1 is being constructed. As soon as profiled bars 2 are arranged accurately with respect to each other, spreading elements 12 can be introduced into the openings in expansion joint 10 in a first step of the assembly process. Depending on the length of the arms of the angle-...

first embodiment

[0035]As in the case of the first embodiment, clamping channels 4 have a first, longitudinal ribbing 18 on their lateral surfaces 16, and connecting element 6 has a second ribbing 20 on its external clamping surfaces 8 (see FIG. 4).

[0036]FIG. 6 is a side view of the angle-shaped connecting element 6 shown in FIG. 5. Like the first embodiment, the widened areas of expansion joint 14 on the sidepieces are offset from each other asymmetrically with respect to the corresponding longitudinal axis of the expansion joint. This construction provides the additional horizontal component of the clamping force produced when spreading elements 12 are introduced into openings 14 in the sidepieces. The clamping effect between external clamping surfaces 8 and lateral surfaces 16 of clamping channel 4 is achieved by movements in opposite directions of either side of connecting element 6. Extensible terminal elements 24 formed on the ends of the angle-shaped connecting element 6 are able to absorb th...

third embodiment

[0038]As illustrated in FIG. 8, the end surfaces of two profiled bars 2A and 2B are not butted up against each other. Instead, the end surface of one profiled bar 2A is arranged at essentially a right angle to second profile bar 2B to form a T-shaped arrangement illustrating the invention. In such a T-shaped arrangement, the end surface of first profiled bar 2A is oriented to fit into the opening in clamping channel 4 of second profiled bar 2B. As shown in FIG. 8, first profiled bar 2A has two clamping channels 4, and the end surfaces of these two channels, located at one end of the first profiled bar 2A, face one of clamping channels 4 of second profiled bar 2B. Connecting the first and second profiled bars 2A and 2B together is accomplished by introducing one end of connecting element 6 into the open end surface of clamping channel 4 of first profiled bar 2A and pushing the connecting element 6 most of the way into the channel, so that its other end projects out of the clamping ch...

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Abstract

The assembly system has several profiled bars connected to each other, each of which has at least one clamping channel open to the outside with a bottom surface and two lateral surfaces. They are connected by an elongated or angled connecting element with two opposing external clamping surfaces, at least certain sections of which are straight, and an expansion joint extending between the external clamping surfaces. The connecting element is introduced into the clamping channel, and at least one spreading element is introduced into at least one section of the expansion joint in such a way that the external clamping surfaces of the connecting element are clamped against the lateral surfaces of the clamping channel of at least one profiled bar. The connecting element is covered at the ends by an extensible terminal element, which covers the expansion joint.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims priority based on European patent application EP 07 015 723.5, filed Aug. 9, 2007.FIELD OF THE INVENTION[0002]The invention pertains to assembly systems which include several profiled bars connected to each other, and more particularly to assembly systems with a lightweight frame which securely hold flat bodies with precision, durability and safety.BACKGROUND[0003]According to the prior art, assembly systems for lightweight frames are known and used to hold, for example, electrical or electronic devices. EP 1 420 140 A1 discloses a frame for holding a flat body, wherein the profiled bars are held together by a clamping element, which extends around the periphery and clamps the profiled bars together from inside the frame. These types of assembly systems suffer from the disadvantage that the retaining force with which the electrical or electronic device is held is limited at the connecting points. For outdoor use and...

Claims

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Application Information

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IPC IPC(8): A47B47/00
CPCF16B12/50F16B2012/443F16B2012/505F24J2/5243Y02E10/47F24J2/5211F24S25/20F24S25/60
InventorWELLHOFER, STEFAN
OwnerISL MEDIA SINGAPORE PTE