RU169568U1 - FASTENING FRAME FOR MODULAR CONNECTOR WITH PROTECTIVE HOUSING - Google Patents

Abstract

The mounting frame for a modular connector with a protective housing belongs to the field of electrical engineering and is designed to fix the modules and install them in the protective housing of the connector, as well as to provide protective grounding. The useful model solves the problem of reducing the number of injection molds in the manufacture of the mounting frame and reducing the complexity of its assembly , which as a result reduces production costs. The specified result is achieved due to the fact that in a frame containing two metal staples with rectangular holes on the long side for fixing the modules, pin and socket contacts of protective grounding, two screw clamps for connecting grounding conductors, two cast metal side parts are additionally made, to which are attached the short sides of the bracket. One side part is cast simultaneously with a pin contact and is integral with it. On the other side, a socket contact is established. A screw clamp is installed on each side. The execution of the brackets separately from the side parts allowed them to be made of sheet metal and not to use injection molds. Since the frame has four sizes, which differ only in the length of the brackets, it is not necessary to produce four injection molds for each size of the bracket. The execution of the side part in the form of a single part with a pin contact reduces the complexity of its Assembly.

Description

The inventive device relates to the field of electrical engineering and is intended to fix the modules and install them in the protective housing of the connector, as well as to provide protective grounding.

Known mounting frame of the modular connector MC CombiTac company Multi-Contact (catalog, publication date 12.2015, p. 8, 75, http://www.multi-contact.com/AcroFiles/Catalogues/IS_CombiTac_(en-en)_hi.pdf) . The mounting frame consists of runners and side tips. The skids are an aluminum alloy profile having longitudinal grooves for securing the modules and for screwing in the screws with which the skids are attached to the tips. Runners can be of different lengths for different dimensions of the mounting frame. The lugs have electrical contacts for protective grounding circuits and terminals for connecting grounding conductors.

The mounting frame of the ODU-MAC modular connector of the ODU firm is known (catalog, publication date 04.2013, p. 92, http://odu-rus.ru/catalogue.files/Katalog_MAC_NEU_2013_D.pdf). It, like the previous analogue, consists of runners with longitudinal grooves and side parts. The mounting frame has two versions, differing in the type of contacts for protective earthing circuits: one with pin contacts, the other with socket contacts, with two contacts on one side of each design, one pin on the other and a screw terminal for connecting the grounding conductor. The frame is made in four sizes, corresponding to the dimensions of the protective housings.

In the mounting frames described above, there is no rigid fixation of the modules on the runners in the transverse direction relative to the direction of articulation, because of which there may be a violation of the centering of the corresponding contacts of the plugs and sockets. For this reason, a complete filling of the mounting frame with modules is required. Also, the runners must be of sufficient thickness so that it is possible to tighten the screws to connect to the side parts, which with a limited size of the protective housing reduces the dimensions of the modules and fewer contacts are placed in the module or insulation distances between the contacts are reduced.

The mounting frame of the HARTING Han-Modular modular connector is closest in design to the claimed solution (“HARTING Industrial Connectors Han” catalog, publication date July 16, 2015, p. 156 (06.3), pp. 249-253 (06.96-06.100), https : /b2b.harting.com/files/livebooks/EN/PRD0200000100046/downloads/livebook.pdf). The mounting frame (hereinafter referred to as the frame) (Fig. 1) consists of two brackets made by injection molding of zinc alloy, the brackets are pivotally connected and form a drop-down design to ensure the installation of modules. The brackets on the long sides have rectangular holes corresponding to the size of the protrusions of the modules, for fixing the latter inside the frame. On one of the brackets in the holes located on the short sides, protective earth contacts are installed: pin and female, which have screw clamps for attaching grounding conductors. The frame is made in four sizes, differing in length and the same in width, which correspond to the dimensions of the protective housings. At the same time, the number of installation places for the modules is 2, 3, 4, and 6.

The disadvantage of the prototype is the need for a separate injection mold for the manufacture of each frame size, i.e. for the manufacture of the entire range of frames, four units of injection technological equipment are required, which increases the cost of manufacturing frames. The assembly of articulated brackets, the installation of pin and socket contacts, made in the form of separate parts, increase the complexity of manufacturing the frame and costs.

The inventive utility model is aimed at reducing costs in the production of frames of different sizes by reducing the number of injection molds and reducing the complexity of the assembly.

To obtain the indicated technical result, a fixing frame containing two metal brackets with rectangular holes on the long side for fixing the modules, pin and socket protective earth contacts, two screw clamps for connecting the grounding conductors, two molded metal side parts, one of which is made as a whole with a pin contact, a socket contact is installed on the other, a screw clamp is installed on each side, the brackets are made of sheet metal and short sides are connected to the side parts.

To understand the essence of the claimed technical solution in FIG. 1 shows a photo of the prototype frame, FIG. 2 is a drawing of the inventive frame assembly, where:

1 - staples with rectangular holes;

2 - side of the frame with a pin contact;

3 - side of the frame with a socket contact;

4 - pin contact;

5 - socket contact;

6 - screw clamps for grounding conductors.

7 - fixing screws.

The inventive frame (Fig. 2) has a prefabricated structure and consists of two brackets 1 and side parts 2 and 3. The brackets 1 are made of sheet metal, for example, by stamping and have threaded holes on the short sides for connection with the side parts 2, 3 using screws 7. When connecting the brackets 1 and the side parts 2, 3, a frame is formed. The side parts 2 and 3 are cast from a copper alloy. On the side 2, there is a pin 4 for protective earth circuits. It is cast simultaneously with the side part 2 and is one with it. On the side part 3, a socket 5 is mounted in the hole with a threaded connection. To screw in the socket contact 5, a hexagonal key hole is made inside it. A screw terminal 6 for connecting an earth conductor is mounted on each side. On the long sides of the brackets 1, rectangular holes are made, into which the protrusions on the connector modules enter, thereby the modules are fixed in the frame.

The assembled frame with the modules is installed in the protective housing and fastened to the housing with screws. The frame is made in four sizes, differing in length and the same in width, which correspond to the dimensions of the protective housings. The number of mounting places for the modules is 2, 3, 4, and 6. For frames of different sizes, the same side parts are used, and different sizes are provided with brackets of different lengths.

The implementation of brackets and side parts in the form of separate parts made it possible to abandon the use of several injection molds for different lengths of frames and to produce staples from sheet metal, for example, by stamping. In the manufacture of side parts 2 and 3 for different sizes of frames, only one injection mold is used. The implementation of the pin contact 4 by casting as a whole with the side part 2 allowed to reduce the number of components and reduce the complexity of assembling the frame.

The structural unity of all parts of the frame made it possible to fulfill its purpose and to obtain a technical result in the form of cost reduction in the manufacture of frames of different sizes by reducing the number of molds used in the production of the frame and reducing the complexity of its assembly.

The practical implementation of the claimed device is not difficult and does not require special equipment.

Claims (1)

A mounting frame for a modular connector with a protective housing, containing two metal brackets with rectangular holes on the long side for fixing the modules, pin and socket contacts of the protective ground, two screw clamps for connecting the grounding conductors, characterized in that it additionally contains two cast metal side parts , one of which is made integrally with a pin contact, a socket contact is installed on the other, a screw clamp is installed on each side, s of the metal sheet and the short sides joined to the side portions.

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