FR2673320A1 - ELECTROMAGNETIC CONTROLLED MECHANICAL SWITCHING APPARATUS. - Google Patents

Abstract

The apparatus according to the invention comprises two identical switch devices (1, 2) grouped one next to the other, which each have a contact-carrier slide movable in translation, projecting in a recessing channel (15 , 25) which extends recessed relative to the front face (16, 26), and a mechanical locking device (4), able to prevent simultaneous movement of the two movable slides, which is housed in the channels of recess (15, 25). Thanks to the invention, the mechanical locking device does not increase the volume of the device.

Description

ELECTROMAGNETICALLY CONTROLLED SWITCHING APPARATUS

MECHANICAL CONVICTION.

  The present invention relates to an interrup-

  electromagnetic drive made up of two devices

  identical switch switches grouped next to

  the other and each presenting a slide

  contacts, movable in translation and provided with a finger

  contactor, these two switch devices being covered

  plied to each other by a mechanical locking or locking device capable of preventing movement

  simultaneous of the two movable slides.

  It is usual to group two devices side by side

  such as block contactors and mechanical coupling-

  the moving parts of these block contactors to make a compound device called an inverter This type of compound device is widely used to control the same motor, either in a direction of rotation or in

  the other, by crossing connections on two phases.

  To prevent the two contactors from being closed simultaneously

  temporarily, which would produce a short circuit between

  the two phases crossed, these contactors are locked

  one against the other: as soon as one begins to close, the other cannot close Usually, one

  performs an electrical locking preventing an exci-

  Simultaneous coils of the two electromagnets at 2 - using auxiliary contacts placed in series with the

  coils of the electromagnets of these block contactors.

  It is also usual to add a ver-

  rust making mechanical locking between the moving parts of the block contactors so that the locking of one of the block contactors is effective

  as soon as the other has started its closing run.

  These mechanical locking modules use two moving parts whose movements are coupled to those

  moving parts of the block contactors.

  Such contactor devices with mechanical locking are described in patent FR-2,521,772, the patent

  DE-39 09 061 and patent DE-30 11 779.

  In these known devices, the mechanical locking module is superimposed on the block contactors and increases

the height of the whole.

  When mounting add-on blocks, these add-on blocks must be fixed on the locking module and when you want to dismantle them, you exert a direct force on the

  condemnation module at the risk of dissociating it

  these contactors-blocks on which it is fixed The height of the device is modified depending on whether it is mounted

or not the condemnation module.

  It is not possible to ensure direct order of

  additive blocks from block contactors.

  The training of these additive blocks is carried out by means

  intermediate transmission parts, which

build construction.

  The present invention proposes to provide an apparatus

  switch composed of two electrical switch devices

  and in which the device or module of 3 - mechanical locking is embedded in the elementary switch devices This embedding has the result of not increasing the size or height

  of the entire device fitted with the locking module

  The invention makes it possible to avoid that the additive blocks are in direct contact with the locking module and allows a direct drive of these additive blocks. The fixing of the additive blocks is carried out on the cover of the device, that the module mechanical locking is incorporated or not in the device The disassembly of the additive blocks exerts no direct effort on the locking module The height of the device does not change depending on whether or not the locking module is mounted The locking module locking can be added or removed without the need to disassemble the basic switchgear. According to the invention, the device is characterized

  by the fact that each of the switch devices pre-

  feels a central embedding channel extending recessed relative to the front face and having a bottom relative to which the contact finger is projecting, and that the mechanical locking device is housed in

said embedding channels.

  According to one characteristic, the apparatus comprises a cou-

  ring covering the front faces of the interrup-

  torers, the mechanical locking device being embedded in the embedding channels of said devices

switches.

  According to one characteristic, the locking device comprises two coupling rods coupled to the contactor fingers and articulated to a cooperating cam-balance

with a fixed stop pin.

  According to another characteristic, the cover is provided with lights allowing the deflections of the fingers of 4 - contactor so as to allow the coupling of the

  contactor fingers with additive blocks.

  According to another characteristic, the locking device

  nation has a support plate ensuring

  dage in translation of the coupling rods.

  According to one characteristic, the ends of the contactor fingers which pass through the openings in the cover covering the locking device and the front face of the switching devices and into openings

  for driving the link rods.

  According to one characteristic, the locking device is mounted below the cover, the latter comprising

  guide means for the coupling rods.

  The invention will now be described in more detail with reference to embodiments given by way of example and represented by the appended drawings in which: FIG. 1 is an exploded perspective view of a first embodiment the mechanical locking switch device according to the invention; Figure 2 is an exploded perspective view of a second embodiment of the mechanical locking switch device according to the invention; Figure 3 is a bottom view of the mechanical locking module fitted to the device of Figure 2; Figure 4 is a sectional view along AA of the locking module of Figure 3; - Figure 5 is a top view of the mechanical locking module of Figure 3; Figure 6 is a top view of the block contactors; Figures 7, 8 and 9 are partial views of the locking module, for different

operating positions.

  An electromagnetic control switch device of the inverter type as illustrated in the drawings, comprises a first switch device 1 and a second switch device 2, identical and grouped one next to

  each other These switch devices are

  blockers or power relays.

  In the embodiments illustrated by the drawings and described below, the devices 1 and 2 are block contactors. Each block contactor 1 or 2 includes an insulating box

  molded 11 or 21 containing a plurality of poles This box

  tier 11 or 21 has cells 12, 13 or 22, 23 in

  which house the connected connection terminals

tees to contacts.

  The front faces of block contactors 1 and 2 are marked

  rees 16 and 26 respectively, while the rear faces are marked 17 and 27 respectively Each of the rear faces has clipping means such as 18 for clipping the block contactor on a rail. In a room of each of the housings,

  in known manner, a movable slide holder

  contacts carrying movable bridges provided with contacts 6 - movable This contact-carrying slide is guided in a housing of the housing so as to move in a direction perpendicular to the surface of the contacts between an open position and a closed position, in parallel on the rear face 17 or 27 of the contactor-block This slide has compression springs, in a manner known per se, of the movable contacts on the

  fixed contacts The contact carrier slide can slide

  be in your room under the action of an electromagnet

  according to the guidance direction defined above.

  Each of the housings 11 or 21 has a central embedding channel 15 or 25 extending in hollow relative to the front face 16 or 26 respectively, between the

  alveoli Each channel 15 or 25 has a sensitive section

  substantially rectangular and is delimited by lateral faces, parallel and perpendicular to the front face 16 or 26 and by a bottom 19 or 29 Each of these channels extends parallel to the direction of translation of the

  Corresponding contact slide Each slide

  contact carrier bucket has forward a contact finger 14 or 24 which projects from the bottom 19 or 29 respectively of the corresponding channel 15 or This contact finger 14 or 24 can move in

  translation along the longitudinal axis of the central channel.

  Each central embedding channel 15 or 25 is open at least on the side of a side face of the housing.

  contactor Protrusions such as 191 or 291 are pre-

  views in the channels, in relief in relation to the bottoms 19 and 29 The wall forming one or the other of the embedding channels 15 or 25 is in one piece without any longitudinal joint plane Each channel 15 or 25 extends over

the entire width of the device.

  The mechanical locking device marked 4 as a whole consists of a first coupling rod

  41, a second link rod 42 and a balance

  cam-cam 43 cooperating with a fixed stop pin 45.

-7-

  The link rod 41 has, at one of its ends

  mites, a driving light 411 into which the end of the contactor finger 14 engages so as to form a positive connection between link and lever At its other end, the link 41 has a pin 412 engaging in articulation housing

  432 of the cam balance 43, so as to produce an articulation

  culation Similarly, the coupling rod 42 has at one of its ends a driving light 421 in which engages the end of the contactor finger 24

  so as to make a positive connection between biel-

  lever and lever At its other end, the link 42 has a pin 422 engaging in a housing

  hinge 43 of the cam balance 43, so as to

  read a joint between said link and said

  pendulum The articulation axes 412 and 422 are per-

  pendulars on the front face of the block contactors.

  The cam balance 43 has a heart cam formed from

  two ramps 433 and 434 and cooperates with a solid pin 45

pair of support plate 44.

  The locking device 4 fits into the embedding channels 15 and 25, the links 41 and 42 being engaged on the fingers 14 and 24 A cover 3

  covers the front faces of the block contactors.

  The housings 11 and 21 do not comprise any part or

  case tie permanently fixed to retain the device

  condemnation in a perpendicular direction

on the front panels of the devices.

  Maintaining the locking module 4 in a direction

  tion perpendicular to the front faces (mounting or dismounting direction) is ensured by the cover 3 The projections 191 and 291 of the housing serve to immobilize the 8 -

  module 4 in the direction parallel to the longitudinal axis

nal of channels.

  The locking device comprises a support plate 44 on which are mounted the links 41 and 42 and the central balance 43 This plate has

  441 straight guides for translational guidance

  tion of the link rod 41 and the rec-

  lines 442 used for guiding in translation of the coupling rod 42 The plate has two slots 443 and 444 through which the ends of the operating levers 14 and 24 pass.

  lights 443 and 444 are respectively arranged opposite

  opposite the lights 411 and 421 of the coupling rods.

  Holes 445 and 446 are provided in the support plate 44 to serve as housing for the projections 191 and 291. The cover 3 has two openings 31 and 32 allowing the ends of the contactor fingers 14 and

  24 respectively These two lights are arranged opposite

  screw of the lights of the plate 44 and the lights of the

  coupling rods Lights 443, 444 of the plate

  tine-support 44 and the lights 31 and 32 of the cover 3 allow the translational movements of the fingers 14 and

  24 The locking device 4 is housed under the cover

  ring 3 and the contactor fingers 14 and 24 passing through the aligned lights 411, 443 and 31 on the one hand, 421, 444

and 32 on the other hand.

  In the embodiment of Figure 1, the mechanical locking device 4 is independent of the cover

  3 which is suitable for covering the front faces of the contactors-

  blocks 1 and 2 This support 44 could be associated with a

  cardboard support to be used for the installation of the device

tif mechanical condemnation.

  9 - In the embodiment of FIG. 2, the mechanical locking device 4 is mounted under the cover 3 by integrating therewith The slides 441 and 442 and

  the pin 45 are integral with the cover 3.

  In a first variant, the slides 441 and the pin could be obtained directly by molding the cover 3 The stop pin 45 is then directly

secured to the cover 3.

  In a second variant, the device comprises a support plate such as 44 which is fixed below the latter by means of clipping lugs

  engaging in holes made in the cover.

  The cover 3 has along the lateral sides, holes 33 for access to the connection terminals. Known fixing means are provided on the cover to allow the fixing of this cover.

  fixing are constituted by clips 34.

  Above cover 3 can be fixed blocks

  additive contactors 5 and 6 which are controlled directly-

  by the operating levers 14 and 24.

  The operation of the mechanical locking device

  will now be explained with more specific reference-

ment to Figures 6, 7, 8 and 9.

  In FIG. 8, the locking device is shown

  felt in the rest position The positions of the link rods 41 and 42 correspond to the rest positions (A) of the contactor fingers 14 and 24 which are not

  actuated The axis of symmetry of the cam 433-434 is ali-

  gnée with the longitudinal axis 46 of the device.

  When the block contactor 2 is actuated (FIG. 7), the contactor finger 24 moves from the rest position - A to the working position B, shown in dotted lines

  in Figure 6 The coupling rod 42 is transformed

  latant rotates the cam balance 43 The ramp 433 is positioned opposite the fixed stop pin 45 The coupling rod 41 cannot then move in translation (in the direction of movement of the finger 14 from position A to the position B), because the ramp 433 of the cam comes into contact with the pin 45 The finger 14 cannot therefore move The locking of the block contactor 1 is therefore

assured.

  In the same way, when the block contactor 1 is actuated (FIG. 9), the contactor finger 14 moves from the rest position A to the working position B shown in dotted lines in FIG. 6 The connecting rod

  hitch 41 by translating rotates the balance

  cier-cam 43 The ramp 434 is positioned opposite the fixed stop pin 45 The coupling rod 42 cannot then move in translation (in the direction of movement of the finger 24 from position A to position B), because the ramp 434 comes into contact with the pin 45 The finger 24

  cannot move The locking of the contact

block blocker 2 is therefore insured.

  The locking device 4 can be embedded in the contactor blocks 1 and 2 or vice versa

  extract from these block contactors without dismantling them.

11 -

Claims (10)

Claims   1 Electromechanically controlled switch device   genetics with mechanical locking comprising two provisions   identical switching devices (1, 2), grouped one by   side of the other, each with a slide   contacts movable in translation and provided with a contact finger (14 or 24), these two switch devices (1, 2) being coupled to each other by a   mechanical lock (4) capable of prohibiting movement   simultaneously of the two movable slides,   characterized by the fact that each of the inter-   breakers (1, 2) has a central embedding channel (15 or 25) extending in hollow relative to the front face (16 or 26) and comprising a bottom (19 or 29) relative to which the contactor finger is projecting, and the mechanical locking device (4) is housed   in said embedding channels (15 or 25).   2 Apparatus according to claim 1, characterized in that it comprises a cover (3)   covering the front faces (16, 26) of the inter-   breakers (1, 2), the mechanical locking device (4) being embedded in the embedding channels (15,   25) of said switch devices.   3 Apparatus according to claim 1 or 2, characterized in that the locking device   (4) comprises two coupling links (41, 42) coupled   bent to the contactor fingers (14 and 24) and articulated to a cam balance (43) cooperating with a stop pin (45) fixed.   4 Apparatus according to any one of the claims   previous cations, characterized in that the cover (3) is provided with lights (31, 32) allowing the deflections of the contactor fingers (14, 24) so as to allow 12 - the coupling of the contactor fingers (14, 24) with additive blocks (5, 6).   Apparatus according to any one of the preceding claims, characterized in that the locking device   (4) comprises a support plate (44) ensuring the guide   dage in translation of the coupling rods (41, 42).   6 Apparatus according to claim 5, characterized in that the ends of the contactor fingers (14, 24) pass through slots (31, 32) of the cover (3) covering the locking device and the front face of the switching devices ( 1, 2) and   in drive lights (411, 421) biel- coupling lugs (41, 42).   7 Apparatus according to any one of the claims   previous cations, characterized in that the locking device (4) is mounted under the cover (3) while being carried by the latter.   8 Apparatus according to any one of the claims   previous cations, characterized in that the stop pin (45) and the guide slides (441, 442) of the rods are   integral with the support plate (44).   9 Apparatus according to one of claims pre-   , characterized in that the stop pin (45) and the guide rails (441, 442) of the rods are integral with the cover (3).   Apparatus according to any of the res-   previous instructions, 13 - characterized in that the support plate (44) fits under the cover (3).   11 Apparatus according to any one of the res- previous indications,   characterized by the fact that the cam balance (43) pre-   feels a heart-shaped cam (433, 434).   12 Apparatus according to any one of the res-   dications previous, characterized in that the lights (31, 32) of movement of the contactor fingers formed in the cover are formed in front of drive lights (411, 421) of the rods (41, 42) by the contactor fingers (14, 24).