FR2613753A1 - DOOR LOCK - Google Patents

Abstract

LOCK OF WHICH THE CASE 1 INCLUDES A LATCH 2, AT LEAST ONE SHAFT 6 INCLUDING A CHIN 7 AND ON WHICH AN OPERATING DEVICE SUCH AS A HANDLE OR A DOOR BUTTON, 3 FORCE TRANSMISSION MEANS CAN BE FITTED TO RETRACT THE LATCH, AND A SPRING 5 TO BRING THE LATCH INTO THE EXIT POSITION. A SPRING 8 ACTS, IN COOPERATION WITH THE CHIN, ON THE OPERATOR TO BRING IT TO A POSITION CORRESPONDING TO THE EXIT OF THE PENET. ONE END OF THIS SPRING IS SUPPORTED ON THE CHIN SO THAT THE SPRING IS IN A STATE OF INITIAL TENSION. AN OPENING 11 IS PROVIDED IN THE HOUSING LOCATION OF THE SPRING 8 TO ALLOW THE MOVEMENT OF THIS SPRING FROM ITS SUPPORTED POSITION ON THE CHIN, IN TENSION, TO A FREE POSITION, WITHOUT INITIAL TENSION, IN WHICH IT DOES NOT ACT ON THE CHIN.

Description

The present invention relates to a door lock, the housing of which

  comprises a bolt, which is movable between a projecting position and a retracted position, at least one operating shaft comprising a chin and on which can be installed an operating member, for example a handle or a rotary button acting on the

  means of force transmission of said men-

  latch bolt to move the latch bolt to its retracted position

  and elastic means for bringing the bolt to its

projecting position.

  A problem relating to door locks, in which one can install different operating devices on an operating axis to retract a bolt

  in the housing of the lock resides in the forces

  elastic linked to the use of this type of operating device and to the operation of the lock due to the

  variations in the forces required. First, a form-

  this elastic is necessary to bring the bolt from the retracted position to the extended position. In the case of a door button, the mass of which is generally low, which is installed on the operating axis, a relatively low elastic force is sufficient for the return of the button and of the accompanying part or spigot actuated by the button. On the other hand, if a handle is installed on the operating shaft which is significantly larger than a

  button, with regard to its mass and the moment of tor-

  sion exerted on the accompanying piece, a substantially greater elastic force is necessary to bring the handle into the horizontal position and maintain it in this position. For this function, an additional spring is provided in the lock housing. If you want to use this type of door lock as a universal lock, you must open the case and remove the additional spring mentioned above, in case you want to use a button instead of a handle. Otherwise, the rotation of the button would require a rotation effort.

  important and would be distressing, especially for children

  children and the disabled. For this reason, two types of lock boot have so far been used: some with an additional spring for

  operation by handle, and the others without the sup- spring

  additional, for button operation.

  The object of the present invention is to avoid the above drawback and to provide a

  universal lock which is equally suitable for ma-

  handle operation only for button operation.

  The invention also relates to a device which is advantageous from the point of view of construction and manufacturing costs and in which a member can be replaced

  maneuver by another diffuse type maneuvering member

  ferent, without the need to disassemble the lock boot

  of the door and open the case to adapt the sizes

  these respective aforementioned elastic bands.

  In accordance with the invention, the above objectives

  above are reached by a lock of the type described in the introduction, characterized in that it comprises a spring which is arranged so as to act, in cooperation with the chin, on the operating member mounted on the operating shaft in order to bring the operating member into a position corresponding to the projecting position

  of the bolt, in that one end of this spring is supported

  separable on the chin so that in

  its supported position, the spring is tensioned ini-

  tiale, and in that the lock boot presents, in the

  right of said spring, an opening through which the spring can be moved from the tensioned position, in which it is supported on the chin bar, to the free position without initial tension, in which it does not act on the chin bar. Other embodiments are

  characterized as indicated in the second claims

  daires. Thus, in accordance with the invention, the spring

  for the handle can be activated by hooking this res-

  comes out with an initial tension on the chin bar, or made inactive by detaching the spring from its initial tension position. These operations can be carried out from the outside of the boot maker, through an opening provided in the boot maker, at the moment when the actuator mounted

  on the operating axis of the lock is removed and replaced

  placed by an operating member of another type, for example a rotary knob in place of a handle or vice versa. Thus, the shoemaker works correctly with different types of operating devices and it is not necessary to dismantle it from the door or to open it

  when changing an operating member.

  In practice, in order to support said spring, the accompanying piece or chuck comprises an element

  retainer, which is open in the direction of increased

  spring tension and allows the ex-

  end of the spring in the supported position and

  remove it from this position to the free position, through

  towards the opening provided in the case, without having to

  open the case itself. The shoemaker has before-

  a stopper to guide the spring into its posi-

  tion without initial tension, so that the spring remains at the location of said opening in the case. The spring itself can advantageously be

  a helical spring and be installed around an element

  ment guide of the rotating cap on the axis of ma-

noeuvre.

  In the case where the force transmission means for the return of the bolt comprise a separate guide element rotatably supported on the case, the elastic means of return of the bolt can

  advantageously be willing to act, through

  diary of said guide element, also on the chin-

  clean so as to bring it back to a corresponding position

to the projecting position of the bolt.

  In addition to the foregoing, the invention

  tion includes other provisions which stand out

  from the description which follows.

  The invention will be better understood using the

  additional description below, which refers to the

  attached sins in which: FIG. 1 illustrates a device in accordance with the invention, the case being open and the spring for a handle being placed in its initial tension position,

  Figure 2 shows the device of the

  Figure 1, the case being closed, and Figure 3 illustrates a device according to the invention, the case being open and the spring for a handle being in its free position without initial tension. It should be understood, however, that these drawings and the corresponding descriptive parts are given solely by way of illustration of the subject of the invention of which they do not in any way constitute a limitation. In the figures, the reference numeral 1 designates a lock boot which comprises a bolt 2. On an operating pin 6 is mounted an accompanying element or chuck 7 which can be rotated by means of an operating member, by example a handle or a button (not shown in the figures), to be installed on the operating axis 6. The chin 7 rotates a guide element 3 around a pivot 4 and the movements of the guide element 3 are provided to generate the movements of the bolt 2. A

  spring 5 recalls the bolt 2 in the projecting position.

  Of course, the shoemaker can also include an au-

  be operating axis placed symmetrically with respect to the bolt and comprising a force transmission mechanism

  correspondent to transmit an organ force from my-

  desired work, for example key operated, with the bolt of the lock. However, this is not illustrated on the

  figures because this does not actually concern the present

the invention.

  The shoemaker also contains a spring 8 which is installed around a guide element 7a provided in the chin 7 located on the operating axis. In

  the case where we want to install a handle on the axis of ma-

  work 6, we install the spring 8 of a first ma-

  nière, shown in Figures 1 and 2, so that one end of the spring is supported, in an initial tension state, by a retaining element 9 fixed to the chin 7. Thus, the spring 8, through the chin 7, returns the handle after retracting the bolt and retains the handle in the horizontal position. Yes

  we then want to use a button instead of a poi

  hinged, the end of the spring 8 is removed from the retaining element 9 by means of a suitable tool passing through an opening 9 formed in the case, so as to place the spring in a position without initial tension,

  as shown in figure 3. As a result, we can

  pull the bolt 2 in the case by rotating the button only against the force of the spring 5. On the other hand, the force of the spring 5 is very sufficient to return the bolt, and also to simultaneously rotate the button to its initial position by the intermediary of

  the guide element 3 and the chin 7.

  The shoemaker has a stop 10 which on the one hand prevents rotation of the chuck 7 in the wrong direction. On the other hand, the stop 10 prevents the spring 8, brought into the position without initial tension shown in FIG. 3, from moving away from the location of the opening 11, since it would then be difficult or even impossible

  to return the spring 8 to the initial tension position

  tial in the retaining element 9 without opening the housing.

  The position of the opening 11 must be chosen close enough to the operating axis so that we can reach

  dye this opening by dismantling only the

  maneuvering gane and its socket mounted on the main axis

  noeuvre. Thus, it is possible to modify the position of the spring 8, during the replacement of the operating member, without

remove the door lock.

  As is clear from the above, the information

  vention is in no way limited to those of its embodiments and of application which have just been described in a more explicit manner; on the contrary, she embraces

  all the variations that can come to mind from tech-

  nician in the matter without departing from the framework or the

tee of the present invention.

Claims (5)

Claims   1. Door lock including the boot (1)   takes a bolt (2) which is movable between a projecting position and a retracted position, at least one operating pin (6) comprising a chuck (7) and on which an operating member can be installed, for example   a handle or a rotary knob, acting on the men-   lug (7), means (3) for transmitting force from said lug (7) to the bolt (2) to move the latch (2) to its retracted position, and elastic means (5)   to bring the bolt (2) to its projecting position, charac-   terized in that it comprises a spring (8) which is   arranged to act, in cooperation with the men-   lug (7), on the operating member mounted on the operating shaft (6) in order to bring the operating member into a position corresponding to the projecting position of the bolt, in that one end of said r ssort (8) is supported in a separable manner on the men-_onnet (7) so that, in its supported position, the spring (8) is initially tensioned, and in that the lock boot (1) has, at the location of said spring (8), an opening (11) through which the spring (8) can be moved from the initial tension position, in   which it is supported on the chin (7), at the   free sition without initial tension, in which it does not act on the chin (7).   2. Lock according to claim 1, charac-   terized in that, to support said spring (8), the chin (7) has a retaining element (9) which is open in the direction of increase in the tension of the spring (8) and makes it possible to place the end of the spring (8) in said supported position and to remove it from   this position supported at said free position, through   towards said opening (11) formed in the case, without   have to open the case (1) itself.   3. Lock according to claim 1 or 2,   characterized in that the shoemaker (1) comprises a bu-   tee (10) which guides said spring (8) in its position without initial tension, so that the spring (8) remains at the location of said opening (11) formed in the case.   4. Lock according to any of the re-   previous vendications, characterized in that said spring (8) is a helical spring and is installed around a guide element (7a) of the chin (7) which   can rotate on the operating axis (6).   5. Lock according to any one of the re-   previous claims, characterized in that said   force transmission means (3) comprises an element   separate guide element (3) rotatably supported on the case (1), and in that said elastic means (5) for returning the bolt (2) are arranged so as to act through said guide element ( 3) also   on the chin bar (7) to bring it back to a correct position   laying in the projecting position of the bolt (2).