FI56737C - ANORDNING VID LUCKLAOS - Google Patents

Description

ΓΜ «« ANNOUNCEMENT

JrajT® (11'utlAggningsskrift 56737 C (45) Patent .Viyän.ie tty 10 03 1 '300 ^ Patent meddelnt (51) Ky.lk. * / Lnt.CI »P 24 C 15/02 ENGLISH — FINLAND (21) P »t * nttlhtk * mu * —P« t «nun $ 6knlnf 760655 (22) H» k «mi * pllvi — Antdkningidag 12.03 * 76 * (23) AlkuptJvi — Glltlghtfsdag 12.03 * 76 (41) Tullut lulklHkti — Blivit offentlij 14.09 * 76

National Board of Patents and Registration

Patent- och registerstyrelsen (44) JÄIÄd "Jd.publk ^ d 30.il.79 (32) (33) (31) Requested« tuolkeui — Bejlrd prlorltet 13 · θ8 · 75

Sweden Sverige (SE) 7502812-6 '(71) Husqyama AB, 56l 01 Huskvarna, Fack, Sweden Sverige (SE) (72) Jan Sjöholm, Huskvarna, Sweden Sverige (SE) (74) Oy Jalo Ant- The present invention relates to a hatch latch for a lowerable anti-hatch and which provides protection against unwanted opening of the oven.

With such oven doors, there is a risk that a child unaware of the danger will burn the door when the oven is hot and burn himself. For this reason, there are requirements that oven doors be fitted with child-resistant locks to prevent such burns. While such a hatch latch is considered a safety feature in families with small children, it can be considered a disadvantage in childless families, as the latch must always be used when opening the hatch. For this reason, there have been latching structures in this art to which a device for locking the latch in a self-pushing position is connected. However, it has proved difficult to use such devices, for example because a tool is required for it. Thus, it seems desirable to provide a device that can be easily brought into and out of the operating position without complicating the structure of the latch itself.

2 56737

It is therefore an object of the invention to provide a hatch lock which can be mounted on an oven door and which can be inactivated in a simple manner in households where protection against unwanted opening is not required and which can be easily activated when desired. The invention provides a solution to the problem of manufacturing a device having these advantages and is characterized by the features set out in the appended claim 1.

The structure of the device according to the invention will now be described with reference to the accompanying drawing, which shows a perspective view in section of a kiln door on which a locking device according to the invention is mounted.

The figure schematically shows the frame 1 of the bathing mouth, which is covered from below by a hinged door 2 with a handle 3, by means of which the door can be lowered and the oven opened. In the embodiment shown, the door consists of two parts 4, 5 mounted on top of each other, for which reason the door is box-shaped. A door latch 7 is mounted on the side edge 6 above the door to prevent unwanted opening of the door. The latch comprises a tongue 8 which, in the up-pushed position (dashed line), is located behind the frame 1 and thus prevents opening. A groove 9 on the upper side edge inside the door guides the tongue, which can be pulled into the door (fully lined) so that it is released from the frame. The tongue belongs to a corner-folded leaf spring 10, the other end of which protrudes from a slot in the flat outer surface of the door.11. Attached to this end is a guide handle 12 made of a heat-insulating material, which can be pivoted like a lever arm about a torque axis located in the slot 11. The dashed position a of the handle 12 corresponds to the dashed position of the tongue 8, i.e. the latch position. When the handle is turned upwards towards the door handle 3, the tongue works downwards in the groove 9 and moves to the neutral position (shown in broken lines) when the control handle is turned to the open position marked b. The control handle can be easily turned in this way by pressing it upwards with your fingers from its lower surface while holding the door handle 3 with your thumb. The Kim door is closed, the tongue lowers with the top edge bent outwards, and slides along the frame 1 and locks behind the frame when the door is fully closed. In the normal position, the tongue tends upwards to the position shown in broken lines because the spring force tends to open the angle of the bent leaf spring 10. The spring force in the slot 11 is at 13 15 hits the inner surface at the groove 9.

As indicated above, a door lock is used under normal conditions, it is desired to lock the door, i. when there is a risk that the door may be opened accidentally. In the absence of such a danger, the lock can be deactivated so that it is not necessary to use the control handle 12 each time the door is lowered. To achieve this, a third position, denoted by c, is provided on the control handle 12. As can be seen from the figure, the door handle 3 has a longitudinal groove 16 in the surface facing the door, into which groove the end of the guide handle 12 fits. The head is guided in this groove by pushing the guide handle position slightly inwards against the spring force towards the groove 11 so that the head passes the lower edge of the hatch handle, after which the guide handle is raised a short distance into the groove 16 to which its end locks. During the movement of this control handle, the tongue 8 is still in the neutral position, because the upper edge bent at its angle rests against the upper edge of the door, and when the door is closed it does not move to the latch position, which allows the door to be opened independently.

Of course, the lock can just as easily be reactivated by removing the end of the control handle from the groove 16 and pushing it down to position a, after which the operation of the lock is completely normal again. It can be seen that the control handle in position b comes into contact with the lower edge of the door handle 3, for which reason it does not normally rise up to the groove 16, but springs back to position a when lowered.

It seems reasonable to assume that alternative designs can be made from both the spring blade and the guide handle, as long as the above principle is used, in which the spring force pushes the tongue out to the latch position when the handle is lowered. It is also possible to hang the guide handle on the edge, stop or the like in the handle of the door, for which reason, of course, a groove is not necessary. Such variations are to be considered within the scope of the invention as defined in the claims.

Claims (5)

56737 Claims; A device for lowering oven doors in door locks, the device comprising a locking tab guided in a groove at the side edge above the door and moving by a spring to a first projecting position, a latch position where the tab locks behind a counter surface in the oven opening so that the door closes , in the closed position, and provided with a control handle by means of which the tongue is moved to another retracted position, the neutral position, characterized in that the control handle (12) has a further position (c) corresponding to the neutral position and cooperates with the door handle. with a stop member (16) for maintaining the control handle in the latter position (c). Device according to Claim 1, characterized in that the door handle (3) is located outside the guide handle (12) and remains pressed against the abutment member in the door handle by the outward spring force of the leaf spring (10) connecting the tongue and the guide handle. Device according to claim 2, characterized in that the abutment member in the handle of the door is a groove, a base, a bar or the like. Device according to Claim 3, characterized in that the control handle has an intermediate position (b) from which it resiliently springs back to the latch position (a), which intermediate position is determined by the contact between the control handle and the stop surface closest to the door handle. Device according to claim 4, characterized in that said three positions (a, b, c) of the control handle are vertically above each other, the latch position (a) being lower and the intermediate position (b) in the next position upwards.