WO2014191342A1

WO2014191342A1 - Control device for an electrical appliance comprising axial notches

Info

Publication number: WO2014191342A1
Application number: PCT/EP2014/060798
Authority: WO
Inventors: Félix BROCKMULLER
Original assignee: Alstom Technology Ltd
Priority date: 2013-05-31
Filing date: 2014-05-26
Publication date: 2014-12-04
Also published as: FR3006498A1; EP3005390A1; FR3006498B1; EP3005390B1; CN105264624B; CN105264624A

Abstract

The invention proposes a control device (10) controlling an operating mode for an actuator of an electrical appliance, the control device (10) comprising a cylindrical drum (22) mounted rotatably relative to a wall (16) of the appliance, the control device (10) comprising first locking means (32) and second locking means (42) for the drum (22), characterized in that the drum (22) includes a plurality of axial notches (50) distributed regularly around the main axis of the drum (22), and in that an insert (52) is arranged in each notch (50), each insert (52) comprising a first segment able to cooperate with the first locking means (32), and a second segment able to cooperate or not cooperate with the second locking means (42).

Description

DEVICE FOR CONTROLLING ELECTRICAL EQUIPMENT COMPRISING AXIAL NOTCHES

DESCRIPTION

TECHNICAL AREA

The invention proposes an electrical apparatus comprising a drum for selecting the operating mode of the apparatus, cooperating with two distinct locking means.

The invention more particularly proposes an electrical apparatus comprising a selection drum whose configuration is modifiable according to the apparatus on which it is mounted.

STATE OF THE PRIOR ART

The electrical equipment according to the invention comprises a mode control device for an electric switch actuator.

He perfected certain devices among which that described in document FR-B-2,960,693, to which reference is made for more details.

The electrical equipment has a fixed contact, a movable contact and a grounding contact. The displacement of the moving contact, normally produced by a motorized actuator, makes it possible to switch the switchgear between an open state, a closed state and an earthed state.

Motorized operation is sometimes replaced by manual operation in certain situations and when a failure occurs. By doubling the actuating means (motorized or manual), it is necessary to guard against switching errors, and the actuator must be substantially complicated: the usual mode, allowing unconstrained switching between the three states, is prohibited. and must be replaced by two limited switching modes, one between closing and opening, and the second between grounding and opening.

The actuator comprises for this purpose a mode selector able to be handled by an operator and which comprises several service positions respectively corresponding to a motor-actuated switching mode, a limited switching mode and an actuated switching mode. manual.

The selector not only allows passage from one switching mode to another, but is also provided with safety devices to prevent erroneous or untimely maneuvers, especially manual operation.

Such safety devices comprise first locking means of the selector in the operating position, making it possible to prevent the selector from being actuated to modify the operating mode of the apparatus, and second means of locking the selector

The first locking means comprise a padlock, whose handle is adapted to be received simultaneously in an orifice of a fixed part of the apparatus, generally a shoe mounted near the selector, and in an orifice of selector, which is associated with the service position to lock.

The selector thus comprises a plurality of orifices, each orifice of which is associated with a selector operating position and each orifice comes opposite the orifice of the shoe, when the selector is in the associated service position, to allow the insertion of the padlock handle, to lock the selector in position.

The second locking means are of the lock type and comprise a rod movable between a retracted unlocking position and an extended locking position. The selector further includes a portion adapted to cooperate, or not, with the rod, when the rod is deployed.

The second locking means are made so as to allow rotation of the selector, between certain angular positions only, for the other angular positions, the selector portion abuts against the bolt rod.

In general, the configuration of the selector is designed according to the actuator on which it is mounted, that is to say in particular the arrangement of the orifices cooperating with the first locking means and the design of the part of the selector cooperating with the second locking means.

Thus, a given selector, which is designed to be mounted on an actuator, may not be able to be mounted on another actuator. The object of the invention is to propose an electrical apparatus comprising a selector adapted to be mounted and to be adapted to different actuators.

DISCLOSURE OF THE INVENTION The invention proposes a control device for operating an actuator of an electrical equipment, the control device comprising a cylindrical drum that can be mounted to rotate with respect to an outer face of a wall. of the apparatus around an axis perpendicular to the wall, between different angular positions each corresponding to an operating mode of the actuator, the control device comprising first means for locking the drum in certain angular positions, the device for control having second drum locking means preventing rotation of the drum to certain angular positions and allowing rotation of the drum to other angular positions when the drum is in certain predefined angular positions, characterized in that the drum comprises a plurality of axial notches distributed regularly around the main axis of the drum, whose number of notches is at least equal to the number of angular positions of the drum and that an insert is arranged in each notch, each insert having a first section adapted to cooperate with the first means locking, to allow or not locking the drum in the angular position associated with the notch receiving said insert and a second section adapted to cooperate or not with the second locking means.

The multiplicity of notches of the drum, as well as inserts that can be mounted in these notches, allows to adapt the configuration of the drum to the apparatus.

Preferably, the first section of the insert comprises an orifice when it is able to allow the locking of the drum in the associated angular position and the first section of the insert is solid when it does not allow the locking of the drum in the associated angular position.

Preferably, said first locking means comprise a padlock whose handle is adapted to be received simultaneously in an orifice of a shoe fixed to said wall, and in the orifice made in the first section of an insert, which is located opposite the hole of the shoe, when the drum is in an angular position associated with the notch receiving said insert.

Preferably, the second locking means comprise a rod movable substantially radially relative to the main axis of rotation of the drum, between a retracted position and a locking position in which a section of the movable rod is located at the same radial dimension that the notches of the drum, and in that the second section of an insert, which is adapted to cooperate with the second locking means, is adapted to bear in a direction orthogonal to the axis of rotation of the drum against said section of the movable rod. Preferably, the second section of an insert which is adapted to cooperate with the second locking means is located at the same axial dimension as the movable rod.

Preferably, the second section of an insert which is adapted to cooperate with the second locking means projects axially with respect to an axial end of the drum, which is situated closest to the wall of the apparatus.

Preferably, the second section of an insert which does not cooperate with the second locking means is flush with said axial end of the drum, which is located closest to the wall of the apparatus.

Preferably, the actuator of the apparatus comprises a motor for motorized actuation of the apparatus and a crankshaft of a crank for manual operation of the apparatus, said wall of the apparatus comprises an orifice adapted to being traversed by the crank and the drum comprises a cylindrical portion in which the notches are formed and a flat plate closing the end of the cylindrical portion closest to the wall, said flat plate having an orifice which is opposite the crank handle shaft when the drum is in an angular position corresponding to a mode of operation of the actuator associated with one manual operation of the apparatus.

Preferably, the flat plate has a second orifice which comes opposite inscriptions arranged on the wall, for at least a portion of the angular positions of the drum.

BRIEF DESCRIPTION OF THE DRAWINGS

Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended figures among which:

FIG. 1 is a schematic representation in perspective of a part of a control device for an electrical apparatus according to the invention is mounted

FIGS. 2 to 5 are diagrammatic representations in perspective of the various inserts which can be mounted in the control device represented in FIG. 1;

- Figure 6 is a view similar to that of Figure 1, showing the control drum alone.

DETAILED PRESENTATION OF PARTICULAR EMBODIMENTS

FIG. 1 shows a control device 10 for the operating mode of an actuator of an electrical equipment such as an electrical switch comprising in particular a fixed contact, a movable contact and a grounding contact which is a second fixed contact.

The apparatus, which is described in more detail in the document FR-B-2,960,693, also comprises means for driving the moving contact in displacement between a disconnected position in it is not in contact with any of the fixed contact and the earthing contact, a closed position in which it is in contact with the fixed contact, and an earthing position in which it is in contact with the earthing contact.

The drive of this movable contact is effected by means of an actuator which contains a main transmission composed mainly of a multistage gear for moving the movable contact by an engine in ordinary circumstances or by a shaft in which manual control circumstances. The shaft is directed to an orifice 14 of a wall 16 of the actuator and it can be engaged by a crank (not shown) engaged in the orifice 14.

The control device comprises a selector 18 through which an operator can define the operating mode of the actuator.

The selector 18 is connected to the actuator via a transmission shaft 20 which passes through the wall 16 of the actuator.

The selector 18 also comprises a selection drum 22 through which the selector 18 is manipulated by the operator.

The selector 18 is mounted movably relative to the wall 16 of the actuator about an axis perpendicular to the wall 16, between various angular positions. Each angular position of the selector 18 corresponds to a mode of operation of the actuator, among which angular positions can be mentioned a disconnected position, a closed position and a grounding position.

The drum 22 has a cylindrical portion 24 of revolution, whose main axis is coaxial with the main axis of rotation of the drum 22 and the transmission shaft 20. The cylindrical portion 24 has a first end located near the wall 16, and a second end located at a distance from the wall 16 of the actuator.

The drum 22 also has a flat portion 26 which is located at the first end of the cylindrical portion 24. The flat portion 26 is circular in shape and complementary in diameter to the internal diameter of the first end of the cylindrical portion 24.

Thus, the second portion 26 of the drum 22 closes the cylindrical portion 24.

The second portion 26 of the drum 22 comprises a plurality of openings 28, here two openings 28, which are able to reveal inscriptions among a plurality of inscriptions (not shown) which are formed on the wall 16 of the actuator.

Each of these inscriptions is associated with an angular position of the selector 18, and is therefore associated with an operating mode of the actuator. When the selector 18 is in a given angular position, the openings 28 reveal the inscriptions associated with this position, allowing the operator to obtain information relating to the operating mode of the actuator. The other inscriptions are masked by the rest of the second part 26 of the drum 22.

The second portion 26 of the drum 22 also has an orifice 30 which allows the passage of the crank which engages with the manual drive shaft of the movable contact.

The position of the orifice 30 relative to the second portion 26 of the drum 22 is defined so that the orifice 30 is located opposite the drive shaft, and therefore in front of the orifice 14 of the wall 16, when the selector 18 is in the angular position associated with the manual drive mode of the actuator.

The two orifices 14, 30 then allow the connection of the crank with the drive shaft.

In the other angular positions of the selector 18, the orifice 14 of the wall 16 is masked by the rest of the second portion 26 of the drum 22. This prevents firstly connecting the crank with the drive shaft when this is not necessary, and also prevents particles such as dust or splashes from passing through the hole 14 of the wall 16.

The orifice 30 and the openings 28 of the second portion 26 of the drum 22 are located at different radial sides from each other so as not to disturb their functions.

The control device 10 also comprises first and second locking means of the drum 22, to block or limit the rotation of the selector 18 with respect to the wall 16. The first locking means 32 is intended to block the rotation of the selector 18 in each of the angular positions that it can occupy, in order to avoid an unwanted change in the operating mode of the actuator.

These first locking means 32 comprise a padlock 34 whose handle 36 is able to cooperate simultaneously with the drum 22 and a shoe 38 fixed to the wall 16.

The shoe 38 has an orifice adapted to receive the handle 36 of the padlock 34.

The drum 22 comprises a plurality of orifices 40, each orifice 40 of which is associated with an angular position of the selector 18. When the selector 18 is in a determined angular position, the orifice 40 of the drum 22 associated with said angular position is located facing the hole of the shoe 38, thus allowing the passage of the handle 36. In order to lock the drum 22 in position.

The second locking means 42 are made to limit the rotation of the selector 18 between certain angular positions only.

The second locking means 42 comprise for this purpose a locking rod (not shown) which is mounted radially movable with respect to the main axis of rotation of the drum 22 between a retracted position in which it does not limit the rotation of the selector 18 , and an extended position in which it limits the rotation of the selector 18. The drum 22 comprises means which are able to cooperate with the locking rod of the second locking means 42, and which are able to abut against the locking rod during the rotation of the selector 18 to an unauthorized angular position, or against which the rod abuts when the selector 18 is in an unauthorized angular position.

These means of the drum 22 are located at the same axial dimension, along the axis of rotation of the drum 22 as the locking rod of the second locking means 42, and are angularly distributed about this axis of rotation so as to be located at the locking rod when the selector 18 is in an unauthorized angular position.

By way of non-limiting example, the locking rod is located axially between the wall 16 and the first end of the drum 22, which is closest to the wall 16.

The selector 18 is made such that the control device 10 can be mounted on several different devices.

The selector 18 is thus adapted to occupy different angular positions for each operating mode, depending on the configuration of the equipment on which it is mounted.

For this purpose, the drum 22 comprises a plurality of notches 50 which are formed in the cylindrical portion 24 of the drum 22 and which are distributed around the main axis of rotation of the drum 22.

Each notch 50 extends axially, that is to say that each notch 50 is parallel to the main axis of the drum 22.

The drum 22 has a number of notches 50 which is greater than the number of angular positions that it can occupy. Some of these notches 50 are associated with the angular positions that the drum 22 can occupy, the other notches 50 no.

Each notch 50 which is associated with an angular position of the drum 22 corresponding to an operating mode of the actuator is able to come in front of the hole of the shoe 38 when the drum is in said associated angular position.

Each notch 50 receives an insert 52 which is able to cooperate, or not, with the first locking means 32, that is to say which is able to receive the handle 36 of the padlock 34, and which is also suitable for to cooperate, or not, with the second locking means 42, that is to say which is able to cooperate or not with the locking rod.

As can be seen in Figures 2 to 5, each insert 52, which also extends parallel to the main axis of the cylindrical portion 24 of the drum 22, comprises a first section 54 which is associated with the first locking means 32 and a second section 56 which is associated with the second locking means 42.

The first section 54 is located at the second end of the cylindrical portion 24 of the drum 22, when the insert 52 is mounted in the notch 50 associated.

As can be seen in FIGS. 3 and 5, an insert 52 which is able to cooperate with the first locking means 32 has an orifice 40 made in the first section 54.

This orifice, as described above, comes opposite the orifice made in the shoe 38 when the drum is in the angular position of actuation associated with the notch 50 which receives the insert 52.

As can be seen in FIGS. 2 and 4, an insert 52 which is not able to cooperate with the first locking means 32 does not have an orifice 40 in its first section 54, that is to say that the first section 54 is full.

Thus, when the drum is in the angular position of actuation associated with the notch

50 which receives the insert 52, the hole of the shoe 38 is closed by the first full section 54 of the insert 52.

Therefore, the handle 36 of the padlock 34 can not be mounted through the shoe 38 and the drum 22, thereby preventing the locking of the drum 22 in this angular position.

The second section 56 of each insert 52 is intended to cooperate, or not, with the second locking means 42.

The second section 56 of an insert 52 which is adapted to cooperate with the second locking means 42 is made to abut against the locking rod, when it is deployed, while the second section 56 of an insert 52 which is adapted to not cooperate with the second locking means 42 is formed so as not to abut against the locking rod.

For this, as can be seen in Figures 2 and 3, the axial length of the second section 56 of an insert 52 which is adapted to not cooperate with the second locking means 42 is equal to a first lower value and the length axial axis of the second section 56 of an insert 52 which is adapted to cooperate with the second locking means 42 is equal to a second upper value, which is larger than the first lower value.

The second section 56 of an insert 52 which is able to cooperate with the second locking means 42 protrudes axially with respect to the flat portion 26 and with respect to the first end of the cylindrical portion 24 of the drum 22, in the direction of the wall 16.

This second section 56 is located at the same axial dimension as the rod of the second locking means 42 relative to the main axis of rotation of the drum.

Thus, this second section 56 is able to abut against the rod of the second locking means, and thus prevent rotation of the drum 22 to the associated angular position, or prevent the displacement of the locking rod when the drum is in position. the associated angular position. The second section 56 of an insert 52 which is able not to cooperate with the second locking means 42 is located axially recessed axially relative to the flat portion 26 and relative to the first end of the cylindrical portion 24 of the drum 22.

This second section 56 can not come into abutment against the locking rod, in a direction parallel to the wall 16.

Thus, when the drum 22 is in an angular position associated with the notch 50 receiving an insert 52 whose length of the second section 56 is equal to the lower value, it is also possible to deploy the rod 22 and it is possible to make turn the drum 22 from this angular position or to this angular position, even if the locking rod is deployed.

The number of notches 50 and inserts 52 is greater than the number of angular positions that can occupy the drum 22. Also, all the notches 50 are of the same dimensions.

Therefore, the configuration of the drum 22 is adapted to the apparatus on which it is mounted by the choice of the inserts 52 which are mounted in the slots, depending on the angular positions of the drum 22 in which it is adapted to cooperate, or not with the first and second locking means 32, 42.

Claims

1. Control device (10) for the operating mode for an actuator of an electrical equipment,

the control device (10) comprising a cylindrical drum (22) adapted to be mounted rotatably with respect to an outer face of a wall (16) of the apparatus about an axis perpendicular to the wall (16) between different angular positions each corresponding to an operating mode of the actuator,

the control device (10) having first means (32) for locking the drum (22) in certain angular positions,

the control device (10) having second drum locking means (42) (22) preventing rotation of the drum (22) to certain angular positions and allowing rotation of the drum (22) to other angular positions when the drum (22) is in certain predefined angular positions,

characterized in that the drum (22) has a plurality of axial notches (50) evenly distributed about the main axis of the drum (22), the number of notches (50) of which is at least equal to the number of positions angular of the drum (22) and in that an insert (52) is arranged in each notch (50), each insert (52) having a first section adapted to cooperate with the first locking means (32), to allow, or not locking the drum (22) in the angular position associated with the notch (50) receiving said insert (52) and a second section adapted to cooperate or not with the second locking means (42).

2. Control device (10) according to claim 1, characterized in that the first section (54) of the insert (52) comprises an orifice (40) when it is adapted to allow the locking of the drum (22). in the associated angular position and the first section (54) of the insert (52) is full when it does not allow the locking of the drum (22) in the associated angular position.

3. Control device (10) according to the preceding claim, characterized in that said first locking means (32) comprise a padlock (34) whose handle (36) is adapted to be simultaneously received in an orifice of a shoe (38) fixed to said wall (16), and in the orifice (40) formed in the first section (54) of an insert (52), which is located opposite the hole of the shoe (38) when the drum (22) is in an angular position associated with the notch (50) receiving said insert (52).

4. Control device (10) according to any one of the preceding claims, characterized in that the second locking means (42) comprise a rod movable substantially radially relative to the main axis of rotation of the drum (22), between a retracted position and a locking position in which a section of the movable rod is located at the same radial dimension as the notches (50) of the drum (22), and in that the second section (56) of an insert (52), which is adapted to cooperate with the second locking means, is adapted to bear in a direction orthogonal to the axis of rotation of the drum (22) against said section of the movable rod.

5. Control device (10) according to the preceding claim, characterized in that the second section (56) of an insert (52) which is adapted to cooperate with the second locking means (42) is located at the same dimension axial as the movable rod.

6. Control device (10) according to claim 4 or 5, characterized in that the second section (56) of an insert (52) which is adapted to cooperate with the second locking means (42) projects axially by relative to an axial end of the drum (22), which is located closest to the wall (16) of the apparatus.

7. Control device (10) according to any one of claims 4 to 6, characterized in that the second section (56) of an insert (52) which does not cooperate with the second locking means (42) is flush with with said axial end of the drum (22), which is located closest to the wall (16) of the apparatus.

8. Control device (10) according to any one of the preceding claims, wherein the actuator of the apparatus comprises a motor for motorized actuation of the apparatus and a crank shaft for a manual actuation of the apparatus,

characterized in that said wall (16) of the apparatus comprises an orifice (14) adapted to be traversed by the crank and in that the drum (22) has a cylindrical portion (24) in which the notches (50) are formed and a flat plate (26) closing the end of the cylindrical portion (24) closest to the wall (16), said flat plate (26) having an orifice (30) which is opposite the taking the crank when the drum (22) is in an angular position corresponding to an operating mode of the actuator associated with one manual operation of the apparatus.

9. Control device (10) according to the preceding claim, characterized in that the flat plate (26) comprises a second orifice (28) which comes opposite inscriptions arranged on the wall (16), for at least a part angular positions of the drum (22).