DE102021004574A1 - Clamping device for universal attachment to a rail - Google Patents

Abstract

Existing clamping devices are either simply built, but not safely load-bearing in all directions, or are made of many individual parts, are complex and heavy if loads are to be transmitted safely in all directions. The present device is thanks to the use of positive connections (7) and the simple The clamping mechanism has a simple structure, consists of few parts and, despite its low weight, can safely carry loads in all directions. Thus, the main loads are borne directly in three directions and indirectly (by friction) in another two directions by the solid main body (1) and the elastic friction element (3) inserted therein. The remaining direction is carried by means of an eccentric lever (4) preloaded insert (2), which is held in a form-fitting manner (7) in the main body. Torques about all three axes can also be transmitted with stiff support. The load to be carried is connected via bores (5) in the main body (1). A spring (6) and the elastic element (3) keep the eccentric lever in the knotted, closed position. The lever (4) is connected and secured to the shaft (8) by means of a pin (10) and the insert (2) by means of a nut (9). The simple and stable design is suitable for fastening devices, e.g. in aviation as well as e.g. for fixing stationary medical devices on the ground and in land-based transport.

Description

• - DE102015208404B3 oder https://shop.mcs-medical.com/sonderloesungen/190/halteklauemcs?c=6 zeigt eine kraftschlüssige Klemmvorrichtung, die durch eine sehr hohe Vorspannkraft in alle Richtungen lasttragend ausgeführt und mit einem Schnellverschluss versehen ist
• - Kraftschlüssige Klemmvorrichtungen diverser Arten mit einer Schraubklemmung (z.B. Krömker Baureihen 6003, 6011, 6012, 6007, 6018, 6058, siehe https://www.kroemker.com/de/haltesysteme/halteklaue.html), bei der das Profil ähnlich wie bei einer Schraubzwinge fixiert wird und so auch lasttragend in alle Richtungen sein kann, die Montage/Demontage aber mehrere Handgriffe / Umdrehungen benötigt.
• - Klemmvorrichtungen mit einem einfachen Klemmhebel, die geringe Klemmkräfte aufweisen, und deshalb auch nicht lasttragend in Richtung der Schiene sind (z.B. Krömker Baureihe 6009, siehe auch https://www.kroemker.com/de/haltesysteme/halteklaue.html)

Various clamping devices are available on the market and are known for attaching devices or payloads to mostly standardized rails, for example in the field of medical technology or aviation. Basically, the following types of construction can be distinguished:

• - DE102015208404B3 or https://shop.mcs-medical.com/sonderloesungen/190/halteklauemcs?c=6 shows a non-positive clamping device that is load-bearing in all directions thanks to a very high pre-tensioning force and is equipped with a quick-release fastener
• - Force-locking clamping devices of various types with a screw clamp (e.g. Krömker series 6003, 6011, 6012, 6007, 6018, 6058, see https://www.kroemker.com/de/haltesysteme/halteklaue.html), in which the profile is similar to is fixed with a screw clamp and can therefore also be load-bearing in all directions, but assembly/disassembly requires several handles / turns.
• - Clamping devices with a simple clamping lever, which have low clamping forces and are therefore not load-bearing in the direction of the rail (e.g. Krömker series 6009, see also https://www.kroemker.com/de/haltesysteme/halteklaue.html)

The problem of the existing solutions is either a high complexity / mass (several 100g) if loads are to be transferred in all directions or a construction that does not carry loads in all directions if low operating and clamping forces are used. Also, the all-round load-bearing constructions are usually very large and the lever is on the underside, making it difficult to reach.

The present invention combines a simple construction consisting of few components, which can be easily executed and prestressed from above with little operating force, and which nevertheless enables power transmission in all directions by means of a non-slip, elastic element. The parts used are easy to assemble, clean and inexpensive to manufacture, and the finished assembly has a mass of <100g and does not require much installation space.

The present invention is primarily intended for fastening devices (e.g. medical devices) to a square standard rail in accordance with DIN EN ISO 19054, but can also be easily adapted for other rail geometries and dimensions. Also, the type of attachment (through holes, tapped holes) can be easily adjusted by varying the main body while the rest parts remain the same. The clamping lever can be easily oriented in the desired direction, and the length of the lever can also be adjusted to the area of application. A special geometric design of the clamping lever allows the operator to be easily signaled whether the clamping mechanism is open or closed.

Reference List

1

main body

2

Form-fitting insert

3

Anti-slip insert

4

eccentric lever

5

mounting holes

6

Feather

7

Positive-locking connection

8th

Wave

9

Fastener 1 (self-locking nut)

10

Fastener 2 (pin)

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102015208404 B3 [0001]

Claims (5)

A clamping device for fastening devices or other elements to a profile rail, characterized in that a. a one-piece main body (1) together with an insert piece (2) which is guided in a form-fitting manner and can only be moved in one direction, encloses the profile rail, b. the main body (1) has a non-slip, elastic insert (3) on a contact surface with the profile rail, c. the profile piece (2) can be pulled onto the profile rail and kneaded by an eccentric lever (4) via a shaft (8) going through the main body (1), d. the anti-slip insert (3) is clamped between the profile rail and the main body (1) when the device is closed, e. the non-slip, elastic insert (3) achieves high friction even with low operating and pretensioning forces and f. the clamping device is therefore load-bearing in all directions. A clamping device after claim 1 , characterized in that a. it consists of fewer than six specially manufactured individual parts, b. these items have a low weight and a simple manufacturing process and c. only two fasteners (9, 10) are required for assembly. A clamping device after claim 1 until 2 , characterized in that they a. has a low susceptibility to dirt due to the open construction and b. By using suitable materials, it can also be used in corrosive environments and is easy to clean. A clamping device after claim 1 until 3 , characterized in that a. the connection to the element to be supported can be easily varied by different variants of the main body. A clamping device after claim 1 until 4 , characterized in that a. the position of the clamping lever (4) makes it easy to see whether the device is closed/clamped or open/loosened.

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