FR2648175A1 - SAFETY LATCH FOR DRUM DOORS OF WASHING MACHINES - Google Patents

Abstract

The invention relates to a security lock for access doors inside the drum of a washing machine. The doors 10 and 20 of the drum are secured by means of hooks 12 and slots 22. One of the doors 10, comprising a recess 11, is provided with a safety lock 30 consisting of a plunger 31 with a base. 32 returned towards the collar 41 of a hollow base 40 forming an angle alpha with respect to the flat bottom of a recess 11, in the direction opposite to the hooks 12. Applications: rotary drum machines.

Description

The invention relates to a security lock for an access door, a

  the inside of a drum of a machine to lover

Laundry.

  Access doors, inside the drum of a washing machine, are subjected, during the rotation in

  drum load, particularly during

  rage, at significant pressures that could provoke

  the untimely opening of the doors and the eviction of

  linen resulting in material damage sometimes im-

  healthy. As a result, these doors have been equipped with various means enabling them to remain united under the pressure they

suffer.

  The most common and most effective of these means is

  with hooks, integral with one of the doors, and

  slots in the other door, arranged in such a way that

  that when closing the doors under the action of

  their return springs, the said hooks penetrate di-

  rightly donations the slots, given the shape of their

  beak; they come out just as easily when a

  is exercised on the doors of the outside, as it is

  the case where the user wishes to intervene in the

  However, it follows from this provision that the doors

  can be relieved under the effect of a relocation

  Of the latter, due to movements of the drum.

  beating or rubbing of the linen, and especially

  against the edge of the corrugation of rectangular section ,.

  directed towards the inside of the drum, performed in the

  door with hook to allow free debate

  the end of the door with the slots

when opening the doors.

  So have we imagined to provide the doors, including a

  closing with hooks, a safety device

  poses to the unwanted recoil of the brackets and to their des-

  boring of notches when said doors are closed

  mées. Various safety devices of this kind currently exist in the state of the art, all of which have the main characteristic of having a stop,

  erasable at will by the user, by the user

  dialer of a suitable means of maneuver, opposing the free movement of the doors relative to one another

  when closed. Such devices are de-

  written in the patents of the Federal Republic of Germany

  magne: 2 237 40g'C 3 and 2 255 551 C 3.

  We already know a security lock opposing the desen-

  Unexpectedly, closure hooks for the access doors, inside the drum of a washing machine, the slits in which they are engaged (Federal Republic of Germany Patent 2,548,488); says it

  lock has an abutment, located directly above the end

  door end provided with the engagement slots of the closing hooks, the erasure of which is obtained by bending a leaf spring, provided with a push rod, recalled

  against the upper portile of a cavai er limiting the d4-

  flapping outwardly of said leaf spring. always

  This lock, by design, requires the utmost

  washing machine to maneuver the pusher which 1il is equipped to obtain erasing the stop, then to

  press the doors to get them open

  Cl. In addition, the leaf spring, at the end of which

  is fixed the stop, lends itself to the hooking of the linen to the

  ocelul is removed from the drum, with the

  deterioration of certain items of laundry and

  tion of the said leaf spring that supposes.

  The present invention aims to remedy these drawbacks.

  This invention, as it is characterized, is

  the problem of creating a safety lock for washing machine drum doors whose stop can be directly operated without Intermediate member and can be completely housed in a recess

  made in the door with the closing hooks

  ture. The security lock according to the invention, opposing the unexpected disengagement of the closing hooks of the access doors to the inside of the drum of a washing machine.

  linen, having a stop located directly above the

  of the door provided with the engagement slots of the closing hooks, designed to disappear below said door by action on an operating member, is characterized

  mainly because the stop is made of gold

  maneuvering the opening of the doors itself.

  This stop is constituted by a pusher, recalled towards

  the outside of a hollow base by a spring.

  The stroke of the pusher is limited by a base taking

  support in the safety position against the edge of the adhesive

  rette of the hollow base, and, in the position of erasure, against

  the bottom of the recess in which the hollow base is

xed.

  The collar of the hollow base of the pusher is inclined

  viron 2 with respect to the flat bottom of the recess, in the

  opposite direction to the closing hooks.

  A certain clearance J is arranged between the pusher and the edge of

  the collar of the hollow base, so as to allow a cer-

  tain lateral deflection of the said pusher by buckling of

  its recall spring, when the said puscestso! lci-

  by hand to obtain the opening of the drum, or by

  the end of the opposite door during the self-closing

of the said drum.

  The upper part of the pusher is curved towards the

  in order to facilitate its grip and its

  noeuvre. The advantages obtained thanks to this invention consist essentially in the fact that the safety lever has no roughness likely to catch the laundry, and that its operation simultaneously causes the doors to open. Other features and benefits will appear in

  the following description of an embodiment of the

  safety lock according to the invention, given by way of non-limiting example with reference to the appended drawings in which - Figure 1 shows a partial longitudinal sectional view of the doors of a drum equipped with the security lock, - Figure2 shows a partial top view of '

  drum doors equipped with security lock.

  The figures show the doors 10 and 20 of a drum, solicited by the intermediate hooks 12, 13 and 14 and slots 22, 23 and 24, the door 10 of which comprises the recess 11, is provided with a lock 30 constituted a pusso ir 31 base 32 returned to the wristlet 41 of a hollow base 40 by aortressort 50; a clearance J having been formed between the pusher 31 and the collar 41 and an angle alpha having been given to the flange 41 of the hollow base 40 relative to the flat bottom of the recess 11, in the opposite direction

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at the square brackets 12, 13, 14.

  By simultaneously examining Figures 1 and 2, we notice

  that, in the closing position of doors 10 and 20, the end

  mity of the door 20, having the slots 22, 23 and 24, is located against the pusher 31 of the latch 30, Just above the collar 41 of the hollow base 40 of said latch

  30. The said pusher 31 is then supported by its base.

  32, against the flange 41 of the hollow base 40. In this position, the hooks 12, 13 and 14 bear against the beads 21, 25 and 26 of the slots 22, 23 and 24 and do not

  can thus be released from those without

  Mentrelative between doors 10 and 20 can be done; that is, without the pusher 31 acting as a

  stop, was previously erased below 1

  mity of the door 20; erasure that can not be done

  only by a voluntary act of the user.

  To obtain the opening of the doors 10 and 20, so just press the curved portion 33 of the pusher 31 to obtain, firstly, by compression of the spring 50, the erasure of said pusher 31 under the end of the door 20 which can, in the same movement, go through des-,

  the push-button 31 while the two doors 10 and 20

  follow their opening movement under the effect of the pressure of the hand, held on the curved portie 33 of the

push 31.

  When the gates o10 and 20 are closed, under 'action of -

  their respective return springs, the door 20 slides against the upper portion of the pusher 31 until its end normally comes snap behind

  the pusher 31, in the same closing movement, without

that the user has to intervene.

  To avoid any accidental jamming of the end

  of the door20 against the pushbutton 31, at the time of the debate-

  When the doors 10 and 20 are opened or closed, a clearance J of a few tenths of a millimeter has been formed between the edge of the flange 41 of the hollow base 40 and the pusher 31, as well as an inclination alpha. about 2 in the opposite direction to the closing hooks. This

  Alpha inclination also promotes buckling of

  S0 fate when a thrust is exerted on the pusher 31 and, therefore, a tilting of said pusher in the opposite direction to the hooks, facl i as the release of

the end of the door 20.

  The safety lock according to the invention is intended primarily

  Mainly to equip the drum machine washing machine, but u can also be used on any rotating drum, whose doors are secured to the closure by a system of hooks.

Claims.

  1. Security lockout against unexpected disengagement

  closing hooks for the access doors, to the

  the drum of a washing machine, the slits in which they are engaged; said lock having a stop, located at the end of the door (20) having the engagement slots of the closing hooks designed to be erased below said door by action on an operating member characterized in that the stop consists of the operating member (30) of

  opening the doors (10, 20) itself.

  2. The security lock according to claim 1, characterized

  in that the stop consists of a pusher (31)

  pulled outward from a hollow base (40) by a

spell (50).

  3. Security lock according to claim 2, characterized

  in that the stroke of the dust (31) is limited by a base (32) bearing, in the safety position, against the flange (41) of the hollow base (40), and, in position

  effacement, against the bottom of the recess (11) in the-

which the base (40) is fixed.

  4. Security lock according to claim 3, characterized

  in that the flange (41) of the base (40) is inclined in the opposite direction to the closing hooks (12,

13, 14).

  5. Security lock according to claim 4, characterized

  in that the angle of ncl Inolson alpha of the collar.

  (41) of the hollow base (40), relative to the bottom of the recess

  ment (11) in which said hollow base (40) is fixed, is

about 2.

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  6. Security lock according to claim 3, characterized

  in that a clearance (J) is provided between the pusher (31) and

  the flange (41) of the hollow base (40) so as to allow

  to put a certain displacement of said pusher <31) by buckling of its return spring (50), when said

  dust percolation for the opening of the drum

  bour, or by the end of the opposite door (20) when

  the automatic closing of the drum.

  7. The security lock according to claim 2, which is

  in that the upper partle of the pusher (31) is

  outward, so as to facilitate his maneuver

the.