FR2555358A1 - MODULAR ELECTRIC KEYBOARD WITH PUSH BUTTONS - Google Patents

Abstract

THIS KEYBOARD INCLUDES A BODY 10 FOR SUPPORTING THE MODULES WHICH CONSTITUTE THE KEYBOARD, WHICH CONSISTS OF A PROFILE IN WHICH ARE PRACTICED OPENINGS 11 FOR HOUSING THESE MODULES AND WHICH ARE CUT TO THE LENGTH NECESSARY FOR EACH PARTICULAR APPLICATION. IT ALSO FEATURES 14 UPPER AND LOWER FIXING SYSTEMS ON THE ANCHORING ELEMENTS 17, 18 OF THE PROFILE 10 ON A RECESSED BOX IN AN APPROPRIATE OPENING IN THE WALL, ONE OF THE ANCHORING ELEMENTS BEING ARTICULATED AROUND THE WALL. AN AXIS 29 SENSITIVELY PARALLEL TO THE SURFACE OF THE WALL AND TO THE EXTENSION OF THIS ELEMENT. THE FIXING SYSTEMS 14 ON THE ANCHORING ELEMENTS 17, 18 ARE CONSTITUTED BY RESPECTIVELY LATERAL AND REAR SLOTS PRACTICED OVER THE ENTIRE LENGTH OF THE PROFILE 10 ON WHICH ARE THREADED AND FIXED PROJECTIONS OF THE ANCHORING ELEMENTS 17, 18 AND ALONG WHICH PROFILE HOLDING GASKETS APPLY.

Description

MODULAR ELECTRIC KEYBOARD

A PUSH BUTTONS

  The invention relates to a modular electric keyboard

push button.

  To meet the wide variety of models of electric push button keyboards used

  in all civil and industrial applications, such as

  electrical door phones, video intercoms, intercom standards, o10 electrical and light switchboards, panels for electrical panels, whether for internal use or for external use, currently require a wide variety of supports and frames that can receive and immobilize components that are variable in their construction and in their number,

  according to specific applications.

  This results in a large quantity of metal or plastic parts, molded, stamped or cut, which must be manufactured for each case, and which must be available in store, which gives rise to considerable losses of time and space, not to mention the need for expensive means. The ideal in such cases is

  represented by the adaptation of the parts to a standard form

  said, by means of a modular system of a very large

  flexibility and, where this is not possible, the possibility of

  reduce the diversity of dimensions.

  Keyboards currently available in the store

  this presents another drawback: the range of profiles

  used to make them is now extremely

  you; the different elements that constitute these keyboards must be variously cut and assembled and therefore

  we can not use elements that would come directly

  stamping; so there remains the problem of

  closing the edges of the elements that have been cut.

  Indeed, while a stamped part is "finished" over its entire perimeter according to the footprint of the costuous stamping, whether plastic or metal, a profiled

  meanwhile, can only have two finished faces that represent

  feel the chord, while the other two faces

  present only the layout of the section.

  Whatever the intended destination for the cut section, it will require adapted end pieces -or heads- to close and finish the two cut faces, these parts must have a pattern corresponding to the two edges of the profile. Regardless of the ornamental factor, they must also ensure the work of fixing the surface of the panel, plate or keyboard cut

  in the profile, on the receiver box, whether it be ty--

  pe to recess or surface mount.

  Finally, we must consider that current keyboards for electric door openers, according to the standards, are contained in ducts or boxes of several types: the models

  to recess and those that are mounted projecting on the wall.

  These boxes are provided with a lid, or a hinged plate, which can be opened for

  carry out verifications and technical interventions

maintenance issues.

  To do this, we use screws or locks: the first system has the disadvantage of asking for time for loosening, the screws can be lost; the second

  system is more expensive, larger and requires the use of

  a key that can be lost as well.

  The main object of the invention is to

  to put a keyboard composed of several pieces of form

  standard, which makes it possible to obtain a modular construction

  flexibility, depending on the type and dimensions

  keyboard to build. This object is obtained, according to the

  by creating a keypad consisting of a

  cut to the proper length and cut to give the housing of the desired modules. The profile of the invention

  also carries out the task of serving as

  port to the modules while constituting an aesthetic frame whose length varies only by changing the cutting and thus the surface able to receive different numbers of modules. Another object of the invention is to completely eliminate hinges and complicated mechanisms; it is however possible to obtain a rotation on 900 to allow the examination of the back part of the keyboard, for the electrical wiring and for any control work

and parts replacement.

  Another object of the invention is to realize

  special end boxes for securing the

  pushbuttons on the receiver box, allow-

  to have a quick and easy assembly of these two elements.

ments.

  Finally, the invention also aims to present

  a keyboard equipped with a special screw for quick

  of components of the keyboard mounted as explained above, which with the minimum volume, cost and duration of implementation and intervention, allows to have the same result as the aforementioned devices, with the advantage

  noticeable to remain in place and therefore not to go astray.

  On the other hand, while in traditional systems

  which use screws, it is necessary to

  the threads that receive the screw, against the lime, the cement and the building materials, so as not to obstruct the threaded hole and to damage the threading, the special screw which is the object of the present invention, being

  because it closes the threaded hole, avoids all

mentioned above.

  Another advantage of the screw proposed is to avoid an off-axis introduction which would damage the thread of

the screw or threaded hole.

  For all these objects and others that will be

  better understood in what follows, the invention proposes to

  a modular electric keyboard characterized by the

  fact that it includes a body that supports

  of the keyboard, body obtained from a profile

  in which are cut the housing of said modules, pro-

  spun itself cut to the length necessary for each specific embodiment; this profile also providing for

  upper and lower attachment systems on

  anchoring the profile to a recessed box in

  a cavity in the wall; one of the elements of anchor-

  ge being articulated on the casing to recess on an axis

  substantially parallel to the surface of the wall and

this element.

  In any case the invention will be better understood and other characteristics will be highlighted at

  using the following description with reference to the drawing

  schematic annexed: Figure 1 is a front view of the support plate of the modules of a keyboard made according to the invention, at the stage of its introduction into the prepared housing; Figure 2 is a view similar to Figure 1, the support plate being in place in the housing; Figure 3 is a side view of the support plate

  placed in the housing, but rotated outwards

  laughing at it; Figure 4 is a sectional view along line IV-IV of Figure 1; Figure 5 is a view along the arrow A of Figure 1 with partial section; Figure 6 is a sectional view along VI-VI of Figure 2; Figures 7 and 8 are respectively a view of

  plane and a front view of a coupling end box-

  the support plate of the modules in a suitable housing; Figure 9 is a sectional view along IX-IX of Figure 8; Figures 10, 11 and 12 are respectively side plan and front views of a captive screw mounted in the keyboard according to the invention; Figures 13 and 14 are views of the screw of Figures 10 and 12 respectively at the time of setting

  place and already in place in a keyboard cavity.

  The profile (10) according to the invention, which constitutes the support plate of the modules which form the keyboard, can be seen in FIGS. 1, 2, 3, 5 and 6 and consists of a rigid frame of metal or plastics in which openings (11) are made to receive the

  aforementioned dules. As can be seen in Figure 6, the

  lé (10) has longitudinal grooves or grooves (12, 13 and 16) formed along the lateral frame (14) and grooves of circular section (15), which are also longitudinal, made on the posterior face of the

profile itself.

  On the upper and lower extremities of the

  profile (10) are applied to the trans-

  versales, lower (17) and higher (18).

  As seen in FIGS. 1, 2, 3, 5 and 9, the upper end box (18) is formed of a

  small rigid block (19) one end (20) of which fits on each

  one of the ends of the grooves (15) of the profile and is locked thereon by means of self-tapping screws (21)

  who screw themselves in the openings of the gorges themselves.

  The small block (19) is shaped so as to

  top the profile (10) at the top,

  edge laterally by means of the projections (9) (Figures 7, 8 and 9) which fit into the grooves (12) and (16) of the lateral frame (14). In this way, the end box (18) is fixed rigidly on the profile (10). The small block (19) further has a small door (22) dug in the

  block and articulated thereon (22 '); she is normal-

  closed by the engagement of his teeth (23) in la-

  appropriate arrangements of the block (18). Still in the block (18) there is a reinforcing crossbar (25) in which is practiced

an oblong hole (24).

  The lower end box is simply a cross member screwed onto the profile (10), just like the top end box (Figure 5) on which

  protruding, laterally, pivots (29) which can

  mount, in the grooves (30) of a second block (31)

  (see Figures 1, 2, 4, 5). The latter is provided with an over-

  posterior flat face (28) intended to abut the housing

  built-in tier (26) positioned in the opening in the wall (27). Laterally to the block (31) there are two shoulders (35), which bear on the wall (27), a laws that the block is fixed by means of a screw (32) which screws into an oblong hole (33) of the reinforcement cross member (34)

  block (31) and into a hole in the housing

  trer (26). The grooves (30) for coupling the profile (10) to the block (31) by means of the pivots (29) are produced in

  these lateral shoulders (35), as can be seen in the

Figure 4.

  After fixing the casing (26) in the corresponding opening of the wall (27), the block (31) is fixed thereto by means of the screw (32), the type of which is described below and is shown in FIGS. 10 and 14. There, the profile (10) is hooked on the block (31) by inserting its

pivots (29) in the grooves (30).

  It is obvious that all this is done after mounting the various modules on the profile (10) and have set up the support fittings in small

  channels (16), so that the keyboard is already operating-

nel.

  Once the assembly is finished, the profit is

  (10) also at the top, on the housing

  castrating (26), by means of a screw (37) which is screwed into a nut (36) provided on the housing (26); it will be interesting that this screw also be of the type that is represented on the

Figures 10 and 14.

  But as the plate (10) is articulated in (29) on the lower block, it will be enough to unscrew from 90 as

  it will be seen, the screw (37) to be able to rotate the

  (10) outward nearly 90 as shown in Figure 3. A tie rod (38) between the housing (26) and the plate (10) will prevent the latter (10) from rotating further, which allows the operator to change, repair or modify

  all the assemblies mounted in the profile (10), which constitutes

kill the keyboard.

  Regardless of the fact that this modular keyboard is practical to mount and use, it is observed that it can also be of variable length and its use adapts to the necessities without any problem of realization. In fact, the end boxes (17) and (18) apply in the same

  on long profiles (two or more openings

  modules (11)) and on short profiles (a module-holder opening), because the grooves (12, 13, 14, 15 and 16) are formed over the entire length of the profile (10) that

  it is thus possible to cut to the desired length, according to the di-

  mounts of the built-in box (26), in which it is

  climbs, without difficulty of adaptation on the blocks respectively

(17) and (18).

  The screw (32 or 37) may have the configuration shown in FIGS. 10 and 14, namely a threaded rod (40)

  partly and a head (41) having faces (42)

  te, and posterior planes (43), sloping also to facilitate

  thrust on the edges of the oblong hole (24) or (33)

corresponding blocks.

  Similarly, a diagonal cut (44) makes it possible to increase the length of the reaction walls of the force

screwdriver.

  Moreover, the particular configuration of the head

  te (41), as seen in Figures 13 and 14, that to release the oblong hole (24, 33), just

  loosen the screw 90 (Figure 13) with respect to

  block (Figure 14) and therefore, in the first case (screw (37), oblong hole (24) of Figure 3), one can make

  rotate the profile (10) 90 outwards on the article

  culation (29) lower; in the second case (screw (32),

  hole (33) of Figure 1, Figures 4 and 5), it is possible to

  expensive block (31) of the box recessed (26).

Claims (6)

-REVENDICATIONS-   1- Modular electrical keyboard characterized in that it comprises a body (10) for supporting the modules which constitute the keyboard, which consists of a section in which are formed openings (11) housing these modules and that is cut to the length necessary for each particular application, in that this profile   further comprises systems (14, 15) for   and lower on the anchoring elements (17, 18) of the profile (10) on a housing (26) embedded in an opening   in the wall (27), one of the elements of   the hoop being articulated on a recessed housing (26) about an axis (29) substantially parallel to the surface of the wall and to the extension of this element.   2- keyboard according to claim 1, characterized in that the systems (14, -15) for fixing on the elements   anchor (17,18) consist of grooves respectively   lateral (12, 13) and posterior (15) movements along the entire length of the profile (10) onto which projections and attachments of the anchoring elements (17, 18) are fitted and along which support fittings of the profile.   3- keyboard according to claims 1 and 2, characterized   characterized in that the upper anchoring element (18) is a block which holds the entire width of the profile and is provided with a small longitudinal door (22) formed in the block on which it is hinged (22 '), which hides, when closed, an oblong hole (24) in which a screw is screwed   blocking (37) of the block (18) on the casing (26).   4- Keyboard according to claims 1 and 2, characterized   characterized in that the lower anchoring element (17) is a block which holds the entire width of the profile and is provided with lateral pivots (29) which are rotatably fitted with spring effect in the corresponding recesses ( 30) of a third block (31) provided with an oblong hole (33) in which is screwed a screw (32) for its locking on the casing (26) and against the wall (27), on which   abut lateral shoulders (35) in which are grooves (30).   Keyboard according to claims 1, 3 and 4,   characterized in that the screws (32, 37) have a square head (41) with at least two opposite sides of length less than the distance between the two opposite sides of the oblong hole.   (24, 39) to allow removal of the element (17, 18)   both the oblong hole without having to remove the screw.   6- keyboard according to claim 5 characterized in that the head (41) of the screw has its front cut (44)   oblique and a chamfer (43) on its posterior face.   7- Keyboard according to claim 1 characterized in that, between the profile (10) and the housing to be embedded (26), a tie has been applied which limits the outward rotation of the profile to a maximum of 90 relative to the housing itself.