Electric connection slot equipped with contamination protection device

FIELD: electricity.

SUBSTANCE: subject of this invention is an electric connection slot comprising a plug (10), equipped with primary contacts (20), and a base (12), equipped with secondary contacts (24), made as capable of interaction with the primary contacts. The connection slot additionally comprises a valve (30), fixed on the base and arranged as capable of rotation between the closed position, in which it closes access to secondary contacts (24), and the open position, in which it opens access to the secondary contacts to provide for connection of the plug with the base, and a circular coupling (40), fixed on an electric cable (14), connected to the plug (10), and made as capable of movement between two extreme positions: the lower position, in which it closes the valve (30), when the plug and the base are connected, and the upper position, in which it opens access to the plug.

EFFECT: increased reliability and service life, due to prevention of ingress of contaminating foreign matters, such as liquids or dust, into the slot base.

9 cl, 9 dwg

 

The technical field

The present invention generally relates to the field of electrical connector that contains the plug is equipped with primary contacts and base, equipped with secondary contacts made with the possibility of interaction with the primary contacts. In particular, it concerns a connector used in aviation, such as connectors, which will be equipped with electric control blocks thrust reverser, alternators, electric actuators or chassis.

Prior art

The electric control unit thrust reverser is designed to control the thrust reversers aircraft nacelles. Usually this block contains the electronic computing device that, when attached to an electronic amplifier and an electric engine that allows you to manage the opening and closing of the thrust reverser using Electromechanical actuators.

The electric control unit contains the power and signal electrical connectors that provide connections, on the one hand, with the various sensors of the thrust reverser and, on the other hand, with fully self-contained electronic digital engine controller (also known as FADEC Full Authority Digital Engine Control "standalone digital system from the management engine"). As you know, each electrical connector includes a plug, provided with the primary contacts, and a base supplied with the secondary contacts made with the possibility of interaction with the primary contacts.

Given the particular location of the electric control unit in the thrust reverser gondolas, some of the bases of the connectors contain secondary contacts aimed in the direction of action of gravity. However, when the opposite plug this connector is detached from the standpoint of reliability and service life of the connector is very important to prevent the ingress of contaminating foreign matter (such as liquid or dust) in the base connecting sockets.

A brief statement of the substance of the invention

The main task of the present invention is to eliminate this drawback by creating a connector equipped with a protection device against contamination.

The problem is solved by creating an electrical connector containing in accordance with the present invention the valve is attached to the base and configured to rotate between a closed position in which it blocks the access to the secondary contacts, and an open position in which it opens the access to secondary contacts to ensure connection of the plug with the socket, and an annular sleeve mounted on an electrical cable connected to the plug and configured to move between two extreme positions: a lower position in which it closes the valve when the plug and socket are connected, and an upper position in which it allows access to the plug.

The valve is designed to protect secondary contact against ingress of contaminants, when the plug connector is disconnected from the cap. As for the clutch, it allows you to isolate the valve from any contact with contaminants during a long stay in the open position (that is, when the plug and socket are connected) and provides, therefore, a constant "own" the closing of the valve. The clutch is designed to hold on the valve seat when it is in open position to avoid any damage due to vibration. Thus, the connector completely protected from contamination at all times.

According to a particular variant of implementation of the present invention, the valve is installed on the rotary finger with the axis parallel to the transverse plane of the cap, so that in the closed position, the valve was essentially parallel to the transverse plane of the cap in the open position, the valve was p is essentially parallel to the longitudinal plane of the base, and around the rotary finger wound spring so that the valve is held in closed position in the absence of acting on his efforts. Due to the presence of the spring, the valve automatically closes the secondary contacts as soon as the plug is detached from the cap. Thus, increased protection from pollution.

According to another private variant of implementation of the present invention, the valve includes a silicone gasket on its inner side, which provides a hermetic closing of the secondary contacts of the cap when it is in closed position.

According to the invention the clutch is designed in the form of a bell, centered on the longitudinal axis of the plug, and includes a detachable mounting system on one of its ends for securing it to an electric cable connected to the plug, while the opposite end of the coupling is open and free, and the clutch is arranged to move a slide from one of its extreme positions to the other. Preferably this coupling at the level of its free end includes a rigid ring.

According to another variant implementation of the present invention the coupling has a contractile structure, centered on the longitudinal axis of the plug, and one end of the clutch mounted on the electric cable, the connection is United with the plug, and the opposite end of the coupling is open and free, and the clutch is configured to be compressed along the electric cable to move from its lower position to its upper position.

According to another variant implementation of the present invention, the coupling has the form of a bellows, centered along the longitudinal axis of the plug, and one end secured to an electrical cable connected to the plug and the opposite end of the coupling is open and free, and the clutch is configured to be folded along the electric cable to move from its lower position to its upper position.

The object of the present invention are also aircraft nacelle and turbine engine containing at least one of the above described electrical connector.

Brief description of drawings

Other distinctive features and advantages of the present invention will be more apparent from the following description with reference to the accompanying drawings, which illustrate a non-restrictive example of the run and on which:

Fig. 1 and 2 depict a longitudinal section of the connector in two different positions, according to the first variant implementation of the invention.

Fig. 3A-3C is a General view with partial cut-out for the connector is different provisions, according to the first variant implementation of the present invention.

Fig. 4A and 4B is a General view with a partial cutout for the connector in two different positions, according to the second variant of implementation of the present invention.

Fig. 5A and 5B is a General view with a partial cutout for the connector in two different positions, according to the third variant of implementation of the present invention.

A detailed description of the various embodiments of the invention

In Fig. 1, 2 and 3A-3C very schematically shows the electrical connector according to the first variant implementation of the present invention.

The connector includes a plug 10 and a base (or basis) 12. The plug 10 is connected with an electric cable or electric wire) 14. With regard to the base 12, it is intended for fastening to the wall 16 of the electrical box, for example, a control unit of the thrust reverser used in aviation.

The plug 10 includes a hollow body 18 is essentially cylindrical shape with a longitudinal axis x-X, which is installed inside(s) one or more primary contacts 20. The base 12 also includes a hollow body 22 is essentially cylindrical shape with a longitudinal axis Y-Y, which is installed inside(s) one or more secondary contacts 24, made with the possibility of interaction with the primary contacts 20.

P is on the interaction between the primary contacts 20 and secondary contacts 24 should be understood getting in touch, allowing to establish the electrical connection, i.e. ensuring the passage more or less strong electric current. So in the example of execution shown in Fig. 1 and 2, the primary contacts 20 are made in the form of longitudinal protruding pins, and each of the secondary contacts 24 has a hollow tubular shape, into which enters the pin. Of course, you can include any other type of primary and secondary contacts, allowing to establish the electrical connection.

To avoid any accidental separation between the plug 10 and socket connector, the plug may also contain a ring 26 mounted slidable around the cylindrical body 18 of the plug and containing an internal thread, while the above-mentioned ring screw up on the corresponding outer thread 28 of the housing 22 of the cap after connecting the plug and the cap.

According to the invention the connector further comprises a valve 30 attached to the base 12. The valve 30 is configured to rotate between a closed position in which it blocks the access to the secondary contacts 24 (Fig. 1 and 3A), and an open position in which it allows access to the secondary contacts for connecting the plug 10 with the cap (Fig. 2, 3B and 3C).

In particular, the valve is made in the form of an essentially flat cover having a diameter, at least equal to the diameter of the cylindrical body 22 of the cap 12. The valve is mounted on the rotary finger 32, pivotally mounted around an axis 34 parallel to the transverse plane P of the cap (Fig. 3A and 3B). Thus, in the closed position, the valve 30 is in a plane essentially parallel to the transverse plane P of the base and rests on the cylindrical housing 22 of the cap closing the casing (Fig. 1 and 3A). In the open position, on the contrary, the valve 30 is rotated approximately 90° relative to its closed position and, therefore, is in a plane parallel to the longitudinal plane of the cap, allowing the connection of the plug with the socket (Fig. 2, 3B and 3C). Moving the valve from the closed position to the open position is carried out manually.

According to the preferred distinctive feature of the present invention around the turning of the finger 32 of the valve 30 is wound spring 36, one end of which is fixed to the valve, and the other at the base (Fig. 1, 2 and 3B). The spring is wound around the rotary finger 32 so that in the resting position (i.e. in the absence of efforts, acting on the valve) it was holding the valve in closed position. When the valve is turned to the open position, the spring is wound around the turning of the finger 32 and the force acts on the rotary finger, seeking to close the clap is. Thus, the valve cannot be accidentally open when the plug 10 and socket 12 for the connector to be separated.

According to another preferred distinctive feature of the present invention, the valve 30 also contains silicone gasket 38 on its inner side (Fig 1), which in the closed position completely hermetically closes the secondary contacts 24 of the cap 12.

According to the invention the connector also includes an annular sleeve 40 mounted on the electrical cable 14 connected to the plug 10 and is arranged to move between two extreme positions: a lower position in which it closes the valve 30 after the connection plugs 10 and cap 12 to prevent the cap from contaminants (Fig. 2 and 3C), and an upper position in which it allows access to the plug 10, to produce a separation of the connector (Fig. 1, 3A and 3B).

In the first embodiment of the present invention shown in Fig. 1, 2 and 3A-3C, the coupling has the form of essentially conical bells, made of soft or semi-rigid material, such as elastomer.

In particular, the bell 40 is centered along the longitudinal axis x-X of the plug 10 and is arranged to move the slide along the electric cable 14 to pass from one its the th extreme position to the other. For this purpose, the bell 40 is held by one of its ends 42 of the electric cable 14 by means of a demountable attachment system. For example, the fastening system can be made in the form of a clamp 44, which can weaken. The other end 46 of the bell remains open and free.

The diameter of the free end 46 of the bell is larger than the diameter of its end 42 that are held around the cable, so that he could fully close the valve 30 after connecting the plug and the cap. In addition, when the plug and socket are connected, the free end 46 of the bell preferably may come into contact with the ring 48, concentric with the housing 22 of the cap is secured to the wall 16 and having a diameter slightly smaller diameter free end 46 of the bell. This ring allows you to avoid any accidental displacement of the bell relative to the connector.

The join operation of the plug 10 with the base follows from the above. The bell 40 is held fixed to the cable 14 in its upper position, opening up access to the plug 10. The valve 30 is turned from the closed position (Fig. 1 and 3A) to the open position and hold the arm in this position for connecting the plug to the cap (pigv). After connecting the plug and cap valve release, and he pressed against the plug under the action of the spring 36 (figure 2). Clamp 44 of the bell 40 has weakened Aut and bell move by sliding along the cable 14 in its lower position, thus the free end 46 of the bell walks around the ring 48 (Fig. 2 and 3C). Then clamp the bell can be fixed again. The separation operation is carried out in reverse order.

According to the preferred distinctive feature of the first version of the implementation shown in Fig. 1 and 2, at their free end 46 of the sleeve 40 includes a ring 50 of rigid material such as metal. This ring 50 is designed to ensure the rigidity of the cylindrical portion of the clutch during her travels.

In Fig. 4A and 4B shows the connector according to the second variant of implementation of the present invention. In this embodiment, the plug 10, the base 12 and the valve 30 is identical to the above-described first embodiment execution.

The connector also includes a coupling 40'mounted on the electrical cable 14 connected to the plug 10 and is arranged to move between two extreme positions: a lower position in which it closes the valve 30 after the connection plugs 10 and cap 12 to prevent the cap from contaminants (figa), and an upper position in which it allows access to the plug 10, to produce a separation of the connector (pigv).

In the second embodiment, the sleeve 40' is shrinking design essentially cylindrical is shape, made of soft or semi-rigid material, such as elastomer.

Compressible design 40' centered along the longitudinal axis of the plug with the end 42', mounted around the electric cable 14 by means of fasteners 44', while the other end 46' remains open and free. The diameter of the free end 46' compacting structure 40' is larger than the diameter of its fixed end 42'to fully close the valve 30 after connecting the plug and the cap.

In addition, the structure 40' is configured to be compressed along the electric cable to move from its lower position to its upper position. For this purpose, as shown in Fig. 4A and 4B, the coupling may be of known construction in the form of bellows, Contracting like an accordion. In an alternative embodiment, the coupler may have a telescopic structure. The operation of connecting and disconnecting this connector is identical to the operation described in relation to the first variant of execution.

In Fig. 5A and 5B shows the connector according to the third variant of implementation of the present invention. In this embodiment, the plug 10, the base 12 and the valve 30 is identical to the above-described first embodiment execution.

The connector also includes a coupling 40”mounted on the electrical cable 14 connected to the plug is 10 and is arranged to move between two extreme positions: the lower position, in which it closes the valve 30 after the connection plugs 10 and cap 12 to prevent the cap from contaminants (figa), and an upper position in which it allows access to the plug 10, to produce a separation of the connector (pigv).

In this embodiment, the sleeve 40 has a structure in the form of essentially conical bellows is made of a soft material, such as elastomer.

This design is 40” centered along the longitudinal axis of the plug with the end 42 fastened around the electric cable 14 by means of fasteners 44”, while the other end 46” remains open and free. The diameter of the free end 46” of the bellows 40” larger than the diameter of its fixed end 42 to close the valve 30 after connecting the plug and the cap.

In addition, the bellows 40” is made with the ability to fold along the electric cable 14 to move from its lowermost position (figa) in the upper position (pigv). For this purpose, the material from which the bellows 40”, should be soft enough to be able to fold, but must have a certain rigidity so that you can hold easily in the top position. The operation of connecting and disconnecting this connector is identical to the operations described is applied in relation to the first variant of execution.

1. Electrical connector containing the plug (10)with the primary contacts (20)and base (12)with secondary contacts (24)made with the possibility of interaction with the primary contacts, characterized in that it further contains
the valve (30)fixed to the base and configured to rotate between a closed position in which it blocks the access to the secondary contacts (24), and an open position in which it allows access to the secondary contacts to ensure connection of the plug with the socket, and
an annular clutch(40, 40', 40"), mounted on the electrical cable (14)connected to the plug (10)and is arranged to move between two extreme positions: a lower position in which it closes the valve (30), when the plug and socket are connected, and an upper position in which it allows access to the plug.

2. The connector according to claim 1, characterized in that
the valve (30) mounted on the rotary finger (32) with the axis (34)parallel to the transverse plane (P) of the cap (12), so that in the closed position, the valve is essentially parallel to the transverse plane (P) of the cap, and in the open position the valve is essentially parallel to the longitudinal plane of the base, and around the swivel pin (32) is wound spring (36) so that the valve (30) held in closed the m position in the absence of acting on his efforts.

3. The connector according to any one of claims 1 or 2, characterized in that the valve (30) contains a silicone gasket (38) on its inner side, which provides a hermetic closing of the secondary contacts (24) of the base (12), when he is in the closed position.

4. The connector according to claim 1, characterized in that the sleeve (40) has a design in the form of a bell, centered along the longitudinal axis (x-X) of the plug (10), and contains the system (44) detachable mounting on one of its ends (42) to ensure its mounting on an electrical cable (14)connected to the plug, while the opposite end (46) of the clutch is open and free,
when this clutch (40) is arranged to move the slide along the electrical cable (14)to move from one of its extreme positions to the other.

5. The connector according to claim 1, characterized in that the coupling (40) at the level of its free end (46) includes a rigid ring (50).

6. The connector according to claim 1, characterized in that the coupling (40') has a contractile structure, centered along the longitudinal axis (x-X) of the plug (10)with one end (42') is fixed on the electrical cable (14)which is connected with the plug and the opposite end (46') of the clutch is open and free, and
when this coupling (40') is configured to be compressed along the electrical cable (14)to move from his lower p the situation in the upper position.

7. The connector according to claim 1, characterized in that
coupling (40') has the form of a bellows, centered along the longitudinal axis (x-X) of the plug (10), one end (42") mounted on an electrical cable (14)which is connected with the plug and the opposite end (46") clutch is open and free,
when this clutch (40) is made with the ability to fold along the electrical cable (14)to move from its lower position to its upper position.

8. Aircraft nacelle, characterized in that it contains at least one electrical connector according to any one of claims 1 to 7.

9. Gas turbine engine, characterized in that it contains at least one electrical connector according to any one of claims 1 to 7.



 

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