RU2723649C1 - Switching modular device - Google Patents

Abstract

FIELD: electrical equipment.SUBSTANCE: invention relates to the electrical equipment. Switching modular device includes housing, on the first terminal part of which the first plug is installed. In the closed position of the first plug, the holes of the sealing ledge of the terminal part and the sealing loops of the first plug are aligned. On the lateral sides of the first terminal part, the first lateral stop ledges and the rounded guide slots are made, wherein in the said slots the rounded guide projections of the first plug are installed with possibility of movement; on lateral sides of inner surface of first plug second lateral stop ledges are made, conjugated with first side locking projections in open position of first plug; first and second slots are made on the front surface of the first terminal part. At that first plug has inner ledge inner ledge retainer in open position while second slot accommodates fixing ledge of first plug in closed position.EFFECT: technical result consists in improvement of modular device protection and its sealing simplification.1 cl, 5 dwg

Description

The claimed technical solution relates to the field of electrical engineering and is intended for use in switchboards to protect low-voltage electrical networks from overloads, short circuit currents and exclude unauthorized access to the supplied electricity.

For example, a sealed terminal block of the EZ9A26982 model for a circuit breaker is known (manufacturer Schneider Electric, Internet resource https://www.se.com/ww/en/product/EZ9A26982/easy9---screw-shield-for-mcb/ , 11/26/2019, [1]). The specified analogue [1] contains a terminal plug with sealing holes installed on the connection terminal.

In the analogue [1], the stub contains two parts. On the first part of the plug, sealing holes and an expansion sleeve are made. A protrusion is made on the second part of the plug. The expanding sleeve of the first part of the plug is installed in the hole of the terminal part of the housing. In this case, the protrusion of the second part is installed in the opening of the expansion sleeve.

A circuit breaker with a protective device is known (China patent CN202977328 for utility model, patent holder DELIXI ELECTRIC CO LTD, IPC H01H71 / 08, publ. 05.06.2013, [2]). The specified analogue [2] contains a connection terminal with a cover installed on it. The cover is fixed to the housing with a connector.

Known circuit breaker (RU 81407 U1, 03/10/2009, [3]). As in the claimed technical solution, the analogue [3] of the automatic switch contains a housing with holes in which the clamps are located with means for fixing the conductors in them. The plug closes the hole with means of fixing the conductors. At least one means of fixing the conductors is provided with a means of unauthorized access in the form of a seal with a discontinuous element.

At the analogue [3], the plug has a rectangular flat front panel and a latch made as a unit with a plug in the form of a hollow sleeve with input chamfers and a longitudinal through section forming two elements. On the outer side of one of the elements made thickening.

Also known switching modular device (RU 64006 U1, 06/10/2007, [4]). As in the claimed technical solution, the specified analogue [4] contains a housing with a cover, under which there are connecting clamps with means for fixing the conductors in them. The cover has a protrusion with holes and hooks. Under the cover, connecting clamps are installed with means for fixing the conductors in them. The breaking element, made in the form of a thread, passes through the combined holes of the protrusions of the cover and the protrusion of the housing.

At the analogue [4], the cover is installed in the opening of the housing by means of hooks and, after rotation, is fixed from movement in the horizontal and vertical directions on the housing. With the lid closed, the protrusions are placed on both sides of the housing protrusion. The protrusion of the housing has a hole matching the size of the holes of the cover.

The specified analogue [4] is the combination of essential features the closest analogue of the same purpose to the claimed technical solution. Therefore, it is adopted as a prototype.

A technical problem, the solution of which is provided when implementing or using a technical solution, is the need to increase the protection of a modular device while simplifying its sealing.

Sealed plugs of analogues [1-3] and prototype [4] are removable, which reduces the protection of the modular device and requires the use of special tools for organizing sealing.

The technical result of the claimed technical solution is to provide visual control of the integrity of the seal in the shield on the access side of the staff.

Another technical result is the elimination of the need for additional space and the use of special tools in the organization of sealing.

The technical result is achieved in that the switching modular device comprises a housing, on the first terminal part of which a first plug is installed. In this case, in the closed position of the first plug, the holes of the sealing protrusion of the terminal part and the sealing loops of the first plug are combined.

On the sides of the first terminal portion, the first lateral locking protrusions and rounded guide grooves are made, while in the rounded guide grooves the rounded guide protrusions of the first plug are mounted for movement; on the sides of the inner surface of the first plug, the second lateral locking protrusions are made, which are associated with the first lateral locking protrusions of the terminal part in the open position of the first plug; on the front surface of the first terminal portion, the first and second slots are made, while in the first slot a fixing protrusion of the inner surface of the first plug is installed in the open position, and in the second slot there is a fixing protrusion of the first plug in the closed position.

The above essence is a set of essential features of the claimed technical solution, ensuring the achievement of all the claimed technical results.

The author of the claimed technical solution made a prototype of this solution, the tests of which confirmed the achievement of technical results.

In FIG. 1 shows a modular switching device with open plugs.

In FIG. 2 - the upper part of the switching modular device;

In FIG. 3 - the inner surface of the stub.

In FIG. 4 - front surface of the plug.

In FIG. 5 - switching modular device with closed plugs.

The switching modular device (Fig. 1) contains a housing (1) with the first and second protective terminal caps (2), under which are the connection terminals (not shown).

The housing (1) is made of dielectric material and consists of two connected halves. Inside the housing (1) there are electromechanical elements of a switching modular device (not shown).

The first and second terminal parts (3) of the housing (1) are box-shaped. On the sides of each terminal portion (3), the first lateral locking protrusions (4) (FIG. 2) and rounded guide grooves (5) are made. In this case, the guide grooves (5) are made over the entire length of the terminal part (3).

A sealing protrusion (6), at least one first slot (7) and at least one second slot (8) are made on the front surface of the terminal portion (3).

A distinctive feature of the claimed technical solution is that the terminal plugs (2) are installed without the possibility of removal. On the sides of the inner part of each plug (2), rounded guide protrusions (9) are made (Fig. 3), which are mounted in the guide grooves (5) of the corresponding terminal part (3) with the possibility of movement. At the edges of the sides of the inner surface of each plug (2), second lateral locking protrusions (10) are formed.

On the front surface of each plug (2), a figured protrusion (11) (Fig. 4) and sealing loops (12) are made. The rounded shape of the guide protrusions (9) and the figured protrusion (11) create a natural emphasis for convenient manual movement of the plug.

At least one locking protrusion (13) is made on the inner surface of each plug (2), which is located opposite the sealing loops (12).

The width of the housing of each plug (2) is equal to the width of the terminal part (3) with the exception of a guaranteed clearance of 1 mm to ensure free movement of the plug (2) and completely closes the assembly with the connection terminal of the modular device. This design increases the degree of protection of modular products from the front panel to IP40 and reliably protects from touching the front of the conductive parts of the device.

Each terminal cover (2) is installed on the terminal part (3) in the open and closed positions.

In the open position, the locking protrusion (13) of the plug (2) is installed in the first slot (7) of the corresponding terminal part (3). In this case, the first lateral locking protrusions (4) of the terminal part (3) and the second lateral locking protrusions (10) of the plug (2) are paired, which eliminates the possibility of incompleteness of the modular device.

In the closed position (Fig. 5), the locking protrusion (13) of the plug (2) is installed in the second slot (8) of the corresponding terminal part (3). In this case, the holes of the sealing loops (12) and the hole of the sealing protrusion (6) are combined. A discontinuous sealing element made in the form of a thread passes through these combined holes and protects against unauthorized opening of the plug (2).

Examples of specific performance.

Example 1. On each terminal part (3), two first slots (7) and two second slots (8) are made. In this case, the first slots (7) are located symmetrically relative to the plane of the connector of the halves of the housing (1). The second slots (8) are also located symmetrically relative to the plane of the connector of the halves of the housing (1).

Example 2. The number of locking protrusions (13) of each plug (2) is two.

The implementation of the proposed technical solution is not limited to the above example.

Way of working.

To access the upper or lower terminal, the plug (2) is moved along the terminal part (3) along the guide grooves (5). The plug (2) is fixed in the open position by placing the locking protrusion (13) of the plug (2) in the first slot (7) of the terminal part (3). In this case, the plug (2) cannot be removed from the terminal part (3), since the first side locking tabs (4) of the terminal part (3) and the second side locking tabs (10) of the plug (2) are connected.

Access to the upper or lower terminal is closed by moving the plugs (2) along the terminal part (3) along the guide grooves (5) in the opposite direction. The plug (2) is fixed in the second position by placing the locking protrusion (13) of the plug (2) in the second slot (8) of the terminal part (3). In this case, the holes of the sealing loops (12) of the plug (2) and the hole of the sealing protrusion (6) of the terminal part (10) are combined. After that, a bursting sealing element is passed through the indicated combined holes and the ends are sealed with a seal.

The claimed technical solution is implemented using industrially produced devices and materials, can be manufactured at any electrical enterprise and will be widely used in the manufacture of modular switching devices.

Claims (4)

A switching modular device comprising a housing, on the first terminal part of which the first plug is installed, while in the closed position of the first plug, the holes of the sealing protrusion of the terminal part and the sealing loops of the first plug are combined, characterized in that - on the sides of the first terminal portion, the first lateral locking protrusions and rounded guide grooves are made, while in the rounded guide grooves the rounded guide protrusions of the first plug are mounted for movement; - on the sides of the inner surface of the first plug made of the second side locking protrusions that are associated with the first side locking tabs of the terminal part in the open position of the first plug; - on the front surface of the first terminal part, the first and second slots are made, while in the first slot a fixing protrusion of the inner surface of the first plug is installed in the open position, and in the second slot there is a fixing protrusion of the first plug in the closed position.

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