EP1947392A2 - Hotplate - Google Patents

Abstract

Cooking hob (11) has bearing plate (13) on which to place heating installations and control housing (20) to control the electronics, connected together using connecting means (17,23). Carrying plate and control housing are two parts (13,20) connected together when assembled, with hook (17) on one part and corresponding recesses (23) on the other. Hooks are designed to put on the recesses in placement direction (A), and to move both parts relative to one another to fasten, in an end direction (E) deviating from placement direction. To connect in end position, the hook has a movable projection (26) and the other part has a locking device in form of recess or notch (18) for projection. To move into end position the projection is moved above or into the locking device and forms a positive connection with it, preventing it moving back out of end position.

Description

The invention relates to a hob according to the preamble of claim 1.

Usually, in hobs such as induction hobs on a support plate of the hob heating devices are arranged and under the support plate, a control housing is mounted, which has a control or electronics for the hob. There are provided connecting means to releasably connect the support plate and the control housing as two parts with each other during the assembly of the hob. Usually, the control housing is bolted to the support plate, for example with four tapping screws at the corners of the control housing as a connecting means. This step of screwing is relatively time-consuming and slows or increases the cost of production of the hob.

The invention has for its object to provide an aforementioned cooktop, can be avoided with the problems of the prior art and in particular a production of the hob easier and faster possible, and further dismantling of the support plate and control housing can be done.

This object is achieved by a hob with the features of claim 1. Advantageous and preferred embodiments of the invention are the subject of further claims and are explained in more detail below. The wording of the claims is incorporated herein by express reference.

According to the invention, it is provided that the connecting means for the support plate and control housing have hooks and corresponding recesses. The hooks are provided on the one part and the recesses on the other part. It should not be ruled out that both parts have both hooks and recesses. The hooks are designed for attachment to or in the recesses on the other part, wherein this attachment of the two parts takes place in a Ansetzrichtung. Furthermore, the hooks and recesses are designed so that subsequently the two parts are moved relative to one another in a direction deviating from the attachment direction. As a result, the actual connection is made when the two parts are present to each other in an end position. In order to prevent a moving back, so a release of the support plate and control housing, the two parts out of the end position, a movable projection is provided on the one part and on the other part a lock. In this case, this lock may have the form of a recess or a form for the projection. When moving the two parts moved to the end position the projection to the lock in or out in the case of a recess, or over the lock away in the case of a severity. Thus, a positive connection with the lock is effected in the end position. Preferably, the movable projection is provided on the control housing and the lock on the support plate, in particular as an expression.

In essence, therefore, in a simple embodiment of the invention, the control housing can be attached to the support plate in the Ansetzrichtung, in which case the hook engage in the recesses. By a movement in the end direction, the hook engage behind the recesses for positive connection. If the two parts are in the end position of the assembly or connection, then the movable projection with the locking has formed a positive connection in order to prevent loosening of the two parts. This positive connection is releasable, for example, for a repair case, in particular by bending back the projection of the lock away. So can on separate fasteners such as screws or the like. be waived, at least for the preparation of the compound itself.

It is possible to form the movable projection biased or resilient so that it interacts automatically with the lock. In particular, it can automatically engage in the form-fit, for example by itself when moving the two parts in the end direction into the end position. Particularly advantageous, the movable projection may be formed as a kind of elongated spring tongue. The lock can be a protruding from the other part expression or another projection. When attaching the two parts together in the Ansetzrichtung the movable projection can either lie in front of the expression and then be moved across the expression and reach behind them with positive locking. For this purpose, the direction of movement of the movable projection is advantageously oblique or transverse to the end direction. For such automatic movement of the movable Projection over the expression across the expression can have a chamfer on the side on which the projection comes to rest when applying, and then move when moving the two parts in the final direction on the expression, so to speak, by bending away. On the other side, on which the movable projection rests in the end position, the expression should be straight or have no bevel, so that a return movement is possible only by bending away the projection.

In a further embodiment of the invention, in addition to a possibly automatically producible interlocking connection between locking and movable projection releasable fastening means may be provided, such as screws or bendable tabs with which the movable projection is attached to or behind the lock against being moved back.

In a further embodiment of the invention can be provided that a positive connection between the movable projection and locking is accessible only from the control housing opposite side of the support plate. Here is particularly advantageous provided that the lock is a recess or depression in the support plate and the movable projection engages in this for positive engagement and manually or mechanically can be pushed out, if the positive connection but should be solved to release the two parts from each other.

Preferably, the hooks are provided on the support plate and corresponding recesses on the control housing, in particular on one of the control housing flange-like outward wide edge which rests flat against the support plate. It is particularly preferably provided that on both sides of the control housing in each case a plurality of recesses and corresponding hooks are provided for a secure and a completely stable attachment of the support plate and control housing to each other. It is advantageous if at one part only hooks and only recesses are provided on the other part, wherein hooks and recesses may be formed the same or identical.

In order to simplify the assembly further and make it safer, it can be provided that hooks and corresponding recesses are distributed or arranged such that the control housing can be attached to the support plate only in a single possible position or position. This avoids errors caused by swapping during assembly as well as possible subsequent repair.

In a further embodiment of the invention can be provided that the hook and the recesses are formed such that the example slot-shaped recesses when engaging the hook have a certain amount of play, which allows, so to speak, a tolerance in the accuracy of preparation. In particular, the recesses may be slightly wider and also a good deal longer than the hooks. Furthermore, they should be designed so that when moving the two parts in the end direction into the end position in this game is less or at least in the final position a tight fit is guaranteed. This is possible by bevels or thickening in the area behind the recesses, on which the hooks rest when moving into the end position.

In a further embodiment of the invention, it is possible that the movable projection comes to rest when engaging the hooks in the corresponding recesses or when attaching the control housing to the support plate on a stamping as a lock. The spring force of the projection can be easily overcome when applying, so that the projection bends back accordingly. If then the control housing is moved in the end direction of the support plate in the end position, engages or snaps the movable projection behind the expression and establishes the positive connection.

It can be provided that the support plate is significantly larger than the control housing, for example, twice to five times as large. Furthermore, the control housing is advantageously attached approximately centrally or centrally to the support plate and also has the same shape. Both parts can be advantageously made of sheet metal, in particular the support plate.

These and other features will become apparent from the claims but also from the description and drawings, wherein the individual features each alone or more in the form of sub-combination in one embodiment of the invention and in other areas be realized and advantageous and protectable Represent embodiments for which protection is claimed here. The subdivision of the application into individual sections as well as intermediate headings does not restrict the general validity of the statements made thereunder.

Brief description of the drawings

Fig. 1A

ein Teil eines Kochfelds in Form eines Tragblechs und eines Steuerungsgehäuses darunter im noch nicht angesetzten Zustand,

Fig. 1 B

eine Vergrößerung eines Ausschnitts aus Fig. 1A,

Fig. 2A

die beiden Teile aus Fig. 1A im aneinander angesetzten Zustand,

Fig. 2B

eine Vergrößerung eines Ausschnitts aus Fig. 2A,

Fig. 3A

die beiden Teile aus Fig. 2A nach Bewegen entlang der Endrichtung in die Endstellung und

Fig. 3B

eine Vergrößerung eines Ausschnitts aus Fig. 3A.

An embodiment of the invention is shown schematically in the drawings and will be explained in more detail below. In the drawings show:

Fig. 1A

a part of a hob in the form of a support plate and a control housing underneath in the not yet attached state,

Fig. 1 B

an enlargement of a section Fig. 1A .

Fig. 2A

the two parts off Fig. 1A in the attached state,

Fig. 2B

an enlargement of a section Fig. 2A .

Fig. 3A

the two parts off Fig. 2A after moving along the end direction to the end position and

Fig. 3B

an enlargement of a section Fig. 3A ,

Detailed description of the embodiment

In Fig. 1A are shown as a part of a hob or as an intermediate step in its mounting a support plate 13 and a control housing 20. The support plate 13 has a folded-down peripheral edge 14 which surrounds an underside 15. The underside 15 has a central opening 16 for connections between a controller in the control housing 20 and heaters or induction coils, which are placed on top of the support plate 13, but not shown here. Furthermore, the underside 15 on the support plate 13 a plurality of exposed and pointing to the right hook 17 and an expression 18. From the magnification in Fig. 1B It can be seen that, on the one hand, the hooks 17 are designed for a specific direction and are of the same design. Furthermore, it can be seen that the feature 18 on the right side has a bevel 19, while it protrudes to the left approximately at right angles from the support plate 13.

Around the control housing 20 with a likewise circumferential, laterally projecting edge 21 recesses 23 in the form of slots are provided in this edge 21 close to the control housing 20, namely six recesses 23 along the two longitudinal sides of the control housing 20. Right next to the recesses 23 points the edge 21 thickenings 24 on. This is especially good Fig. 1B to see. This will be discussed later.

At the right-facing end face of the control housing 20, a spring tongue 26 is provided. This is bendable along the dashed line out of the other edge 21 and separated from the edge 21 on the line shown in solid line. This is off then Fig. 2B even clearer.

The control housing 20 is along the mounting direction A according to Fig. 1A attached to the support plate 13 or the other way round. A controller or electronics is already in the control housing 20.

In Fig. 2A is shown as the control housing 20 in the mounting direction A according to Fig. 1A has been attached to the support plate 13. All hooks 17 engage through the corresponding recesses 23 in the control housing 20 and in its edge 21. As above all Fig. 2B can be seen better in magnification, the spring tongue 26 comes when fitting exactly on the expression 29 or with their in Fig. 2B left upper edge in the region of the chamfer 19 to lie. Therefore, it is bent at its right lower severed end of the edge 21.

Now, the control housing 20 along the end direction E according to Fig. 2A moved on the support plate 13 or the other way around. At the end of this movement is in the end position according to Fig. 3A a hob 11 in front. This is especially on Fig. 3B directed with the magnification. From this it can be seen how the hooks 17 not only overlap any area of the edge 21 at the end of the recesses 23, but just overlap the thickenings 24. This ensures a good fastening action of the control housing 20 to the underside 15 of the support plate 13, in particular if the thickenings 24 increase away from the recesses 23 or become thicker.

Furthermore, most of all Fig. 3B to recognize that the spring tongue 26 engages behind the expression 18 or comes to rest next to this and thus in turn substantially flat against the support plate 13 as the other edge 21 also. Since the expression 18 on the left-facing side has no chamfer, in a movement of the control housing 20 against the end direction E, the spring tongue 26 do not slip over the expression 18 and thus a non-automatically releasable positive connection is formed. This prevents that the two parts can be moved against each other to solve each other. The expression 18 forms the locking described above.

Especially from the Fig. 2B and 3B It can be seen that it is also possible that the edge 21 of the control housing 20 in place of a separate movable spring tongue 26 has a certain flexibility or flexibility. Thus, he himself can be bent when attaching the control housing 20 to the support plate 13 or recede on the expression 18 and lie for a similar positive fit behind the expression 18 for locking.

The release of the positive connection can easily take place in that the spring tongue 26 is bent away from the support plate 13 and thus no longer rests on the expression 18. For this purpose, for example, be provided that left of the expression 18 a hole or the like. is provided in the support plate 13, through which the spring tongue 26 can be pushed away from above with a push-through tool.

It is also based on the Fig. 3B It will be readily apparent to those skilled in the art that instead of the feature 18, a larger opening could be provided in the support plate 13 at the location where the spring tongue 26 lies. This spring tongue 26 can be pressed either automatically or by a tool up into this recess of the support plate 13 or engage, so that also a not automatically releasable positive engagement is given. The disadvantage here would be that the spring tongue over the top of the support plate 13 protrudes and could be in the way here.

Furthermore, in Fig. 3A dashed a glass ceramic plate 12 shown. This is applied to the cooking plate 11 on the support plate 13, when the induction coils have been applied to the top of the support plate 13. A main mechanical connection between the glass ceramic plate 12 and the support plate 13 may by a non-illustrated, outer peripheral edge, terminals or the like. getting produced.

Based on Fig. 3B It is also easy for the skilled person to see how the spring tongue 26 can be connected to the support plate 13, for example by means of a tapping screw either from above first by the support plate 13 or from below first by the spring tongue 26. Other fasteners are easily feasible.

The advantage of the attachment of the hooks 17 on the support plate 13 or on its underside 15 and the recesses 23 on the edge 21 and the control housing 20 is that the top of the support plate 13 may be formed completely flat and without protruding parts. As a result, the attachment of heating devices, in particular induction heating devices, is particularly simple.

Claims (11)

Hob (11) having a support plate (13) for arranging heating means thereon and having a control housing (20) for a controller or electronics, connecting means (17, 23) being provided for detachably connecting the support plate (13) and control housing (20) with each other, wherein the support plate and the control housing are two parts (13, 20) which are interconnected in the assembled state of the hob (11), characterized in that the connecting means have hooks (17) on the one part and corresponding recesses (23) at the other part, wherein the hooks (17) are adapted for attachment to the recesses (23) in a direction of attachment (A) and for subsequently moving the two parts (13, 20) relative to each other in a direction different from the direction of attachment (A) End direction (E) for producing the connection in an end position, wherein on one part (20) a movable projection (26) is provided and on the other part (13) Arretie tion in the form of a recess or an expression (18) for the projection (26), wherein when moving into the end position of the projection (26) to the lock (18) over or away in this or moved into it and in the End position as a positive connection with the lock (18) cooperates to prevent a moving back out of the end position for releasing the support plate (13) and control housing (20). Hob according to claim 1, characterized in that the movable projection (26) is biased or resiliently designed for automatic interaction with the lock (18), in particular for the automatic engagement in the positive connection. Hob according to claim 2, characterized in that the movable projection is a spring tongue (26) and the locking a projecting expression (18), wherein in the end position, the spring tongue (26) with positive engagement behind the expression (18) engages and the direction of movement of the projection (26) obliquely or transversely to the end direction (E) of the two parts (13, 20) into the end position. Hob according to claim 3, characterized in that the expression (18) has a chamfer (19) on the side facing away from the projection (26) in the end position for moving the projection (26) over the expression (18) when moving the two parts (13, 20) in the end direction (E), wherein preferably the expression (18) on the side of the projection (26) in the end position is straight or along the direction of movement of the projection (26). Hob according to one of the preceding claims, characterized in that the movable projection (26) when engaging the hook (17) in the corresponding recesses (23) on the detent in the form of an expression (18) comes to rest. Hob according to one of the preceding claims, characterized in that the movable projection (26) is locked by releasable fastening means in the end position with positive locking for preventing a movement back over the lock (18) of time, wherein preferably the fastening means are releasable and in particular a screw or a bendable tab. Hob according to one of the preceding claims, characterized in that the movable projection (26) on the Control housing (20) is provided and the lock (18) on the support plate (13). Cooking field according to one of the preceding claims, characterized in that the positive connection between the movable projection (26) and detent (18) only from the other side of the support plate (13) is accessible to which the control housing (20) is not applied, in particular the Locking a recess or depression in the support plate (13). Hob according to one of the preceding claims, characterized in that the hooks (17) on the support plate (13) are provided and the corresponding recesses (23) on the control housing (20), preferably a plurality of recesses (23) on at least two sides of Control housing (20) are provided. Hob according to one of the preceding claims, characterized in that the distribution of hooks (17) and corresponding recesses (23) is such that the support plate (13) and control housing (20) can be attached to one another and connected to one another only in a single possible position. Hob according to one of the preceding claims, characterized in that the hooks (17) and the recesses (23) are formed such that they engage in engagement with the hooks (17) in the recesses (23) for easier engagement, wherein they sit firmly together in the end position and without play, in particular by means of thickenings (24) near the recesses (23).

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