EP0544244A2 - Temperature - detector - Google Patents

Abstract

An apparatus (1f) which is provided, for example, as overheating protection for temperature detection on a heating apparatus (4f), also has, in addition to a temperature sensor (3f), an insulating connecting piece (20f) having all the connecting elements (23f) which are required for the electrical connection of the heating apparatus (4f), so that these connecting elements (23f) (after attachment of the apparatus (1f) to the heating apparatus (4f)) are located so that they are accessible directly adjacent to the external circumference of said heating apparatus (4f) and to the associated end (31f) of the apparatus base (19f), in order to produce the connecting joints. <IMAGE>

Description

The invention relates to a device for temperature detection with a single or more control elements, such as temperature sensors. Such devices are e.g. B. used in households for heating devices or the like. Which have electrical connecting parts for connection to device lines for their electrical power supply. Warmers can e.g. B. heating units, such as radiant heating units for hobs, ovens or other. The device expediently has as an enlarged device head one or more device bases made of electrically and / or thermally insulating material, for. B. hard ceramic, which forms at least two base sections and carries one or more control members rod-shaped above an outside and / or encapsulated or sunk within its outer surfaces.

The device base can, for. B. in the case of a thermal expansion fluid and therefore hydraulically working temperature sensor only this, but not the associated switch and / or, z. B. in the case of a mechanically working Temperature sensor, additionally carry at least one switch actuated by this and serve, for example, for manually adjustable temperature control and / or for temperature limitation or as overheating protection for the heating device, of which part or all of the power is automatically switched off when an adjusted limit temperature is reached and after falling below one corresponding lower limit temperature is automatically switched on again. As a mechanical temperature sensor z. B. a bimetallic sensor and / or an expansion rod sensor with two rod bodies extending over a common longitudinal region made of materials of different thermal expansion coefficients can be provided. The rod bodies are fixed in the area of a longitudinal section against relative longitudinal movements and form control surfaces in a longitudinal area distant therefrom which, in the event of thermal changes, execute longitudinal movements against one another, from which the desired actuation or the associated actuating force is derived.

You can the device with the device base on an outside, for. B. an outer periphery of the heating device so that the temperature sensor is exposed to the heating effect of at least one heating resistor or another consumer of the heating device or protrudes into a corresponding boiler room. At a distance adjacent to the device base, an additional connector with an insulating body made of the aforementioned pressure-resistant insulating material can then be attached to the heating device, which has one or more connecting elements for the electrically conductive connection, each with at least one heating resistor. The connection is made via a conductive intermediate part fastened to the heating resistor or without an intermediate part by directly fastening the heating resistor to the connecting element. The heating resistor can e.g. B. by a wire coil, a thick film resistor or similar be formed. If the connecting elements are connected to connecting members for the device lines via connecting conductors located outside the device base, this results in a relatively complex training and assembly. This is also the case if the device base contains at least one circuit breaker which is connected with lines lying outside the heating device, the device base and the connecting piece to an associated connecting element of the connecting piece and to at least one heating resistor in the manner described.

You can also fix the device base instead of on the outer circumference to a back or bottom of this heater facing away from the heating plane of the heater. In this case, an engagement surface of the device base can rest against this underside and connecting conductors can be guided outside of this engagement surface adjacent to exposed outer sides of the device base to the heating resistors. This training is particularly suitable for mass hot plates, and a separate connector is used here as an insulating body in the underside, the connecting conductors being relatively far outside the appliance base and having to be secured with the separate insulating bodies.

The invention has for its object to provide a temperature detection device by which disadvantages of known designs or the type described are avoided and which ensures a very safe electrical connection of the heating device to device lines, in particular with a simple structure.

According to the invention, the device base has at least one connection element for the electrical connection to at least one connection part of the heating device so that at the Heating device operationally arranged device base this connection element or the associated connecting conductor, except from a limited area, is not easily accessible either from the other outside of the device base or from the other outside of the heating device. In addition to the respective temperature sensor, the device base also carries one or more connection elements or connecting conductors which, apart from the associated connection element, can essentially only be accessible in the area of a corner zone of the end face or engagement surface of the device base and thus from the area in which the electrically conductive connection with the heating resistor is to be established. Possibly. With the exception of the respective connecting element, the entire connecting conductor with its connecting element could be guided completely encapsulated from the inside of the device base to the inside of the heating device, without a separate insulating sheathing, a connecting piece to be mounted separately from the device base or lying at a distance from this being unnecessary. Both the connector and the device base can be attached to the same location of the heating device with a common attachment, whereby the space requirement can be significantly reduced.

Instead of forming the respective approach of one or more connecting pieces as a separate component from the device base, the rigid operational connection between the device base and this approach can be achieved in a particularly simple manner by means of a common, one-piece design, so that the rigid connection is also provided before installation in the heating device is. The approach can form a substantially completely recessed base section engaging in the heating device, while the rest of the device base is expediently free on the outside of the heating device and is therefore accessible for cooling good ventilation. Such however, the approach and / or the respective connection element expediently also occupies a free position.

Instead of on separate base sections or approaches, the temperature sensor and one or all of the connection elements required for connecting the heating device are located in the area of the same base section. In a view of its end face, at least one connection element can lie completely inside or outside of the outer contour of the end face or that of the rest of the base body. When viewed on the heating plane, the projection can form a projection which is narrower, at least laterally protruding, than at least a subsequent section of the rest of the base body. The approach can also be suitable for securing the device base against tilting about axes lying transversely and / or parallel to the engagement side with respect to the supporting body.

The engagement side can form an almost continuous or only slightly set back and exposed intermediate section of an inner surface of the heating device, which delimits the heated space on the outer circumference, for example in the form of an inner peripheral surface. As a result, there is no need for separate openings in the heating device for introducing the connecting elements or intermediate conductors to the inside of this inner surface, but rather the engagement of the temperature detection device and one or all connecting elements or intermediate conductors takes place through a common opening in the supporting body of the heating device. These and corresponding designs can also be expedient if the connecting piece is provided separately or at a distance from the device base and, if appropriate, does not form a self-contained structural unit for mounting on the heating device.

Due to the design described, at least one connector can be assembled instead of transversely approximately parallel to the heating plane for assembly with the heating device, which considerably simplifies the assembly and the design of the insulating body of the connecting piece, because it does not require any plug-in grooves or other relatively complicated shapes for connection to the heating device . In addition, the connector and the temperature sensing device can be assembled together on the heater in a single operation.

The device base advantageously has outer boundary surfaces lying approximately at right angles to one another, wherein it expediently forms a flat block or a flat housing, the thickness of which is smaller than one or both of its other edge dimensions. One or both of the thickness-limiting, larger outer surfaces lying transversely to the end face are expediently each formed as a mounting side in that when the appliance base is assembled, the ones to be attached to it, e.g. electrically conductive components made of metal or the like are joined together from and transversely to this mounting side with the device base. The base expediently has corresponding recesses on this side for receiving the respective component completely recessed.

One of these mounting sides is advantageously also provided in the installed state of the temperature detection device as the side which is approximately parallel to the heating plane, facing it and at least one gap apart from it, from this side preferably the larger number of components than from the other Side mounted. This mounting side, which in the operating state can also form the approximately horizontal top of the device base, expediently extends to the mounting recesses which may be provided and penetrate them continuously or even over the entire device base and the connector. In this way, all areas can be closed with a common, hood-shaped and / or leaf spring-like flat and in particular one-piece cover that is less than one millimeter thick. In view of this cover or top of the device base or the connector, all connection elements and temperature sensors are expediently side by side and / or parallel to one another, but the control member closer to the cover side than at least one connection element and / or at least one connection element further away from the Cover side can lie as at least one further connection element.

However, at least two or all of the connecting elements can also lie in a common plane which is approximately parallel to the cover side and / or have flat cross sections which are essentially continuous over their length and are parallel to this cover side. The connecting elements are advantageously resilient by means of suitable articulation zones transverse to the heating plane or to the cover side and / or by permanent bending deformation, so that they can be brought very easily into direct contact with the associated end sections of the heating resistors or intermediate conductors. The end section of the heating resistor, which is in one piece at least over several centimeters, can also directly form the associated connecting part without an intermediate conductor. The connecting elements are attached to this in a non-detachable or adhesive and conductive manner by welding or the like.

A connecting conductor leads from the respective connecting element via a switch or without a switch to the associated connecting element provided for the operation of the heating resistors. Advantageously, all the connecting elements are freely protruding or accessible on the same connecting side of the device base.

This connection side is provided transversely to the end face and / or to the cover side and is formed by a narrow edge of the device base, with all connection elements, connecting conductors and / or connection elements expediently completely between and at a distance from the levels of the cover side and the side of the device base or the side remote from it Warming device. This advantageously also applies to the control element, the switch or switches or all other components attached to the device base.

One or more temperature detection devices can form a self-contained structural unit with the heating device, which is to be attached to a suitable overall device or to a glass ceramic plate defining the heating plane. In this structural unit, the respective device base can be connected to the supporting body essentially without play by bracing, latching and / or at least one snap connection. It is particularly advantageous if at least one fastening and / or latching or snap member is formed in one piece from a base body made of sheet metal or the like of the supporting body by cutting and / or bending, which in a corresponding counter member of the device base or a metallic fastened to it Holder intervenes. As a result, separate fastening elements, such as fastening bolts, welded connections and the like, can be completely dispensed with.

In order to be able to easily convert the connection piece or the device base to different connection or circuit ratios, one connection element or several connection elements, for example flat tabs, are formed by legs of a connection body. This can be formed as a stamped and bent part made of material of approximately the same thickness as the connecting elements, connecting conductors and / or connecting tongues, each of which, if appropriate are formed in one piece with a connecting conductor. In addition to one or more connecting members, the connecting body has a fastening leg which is expediently located at an angle to and / or away from it and which lies essentially congruently and over a large area on a surface of the associated connecting tongue which is parallel to and / or faces the top side, and with it is adhesively and permanently attached by welding or the like. The connecting tongue is expediently designed as a connecting plug or tab, so that if the connecting body is not fastened to it, it is suitable, like all other connecting members, for an easily detachable plug connection with a mating connector of a device line.

A particularly advantageous fastening of the device base or the connector on the heating device is obtained if the plug-in, snap-in and / or snap connection is provided directly between a housing cover of the device base or the insulating body of the connector and a component such as the sheet metal shell of the support body . The lid can be made in one piece with an associated fastening member, e.g. a plug opening. This connection engages when the sensor device or the connector is transferred to the heating device in its operating position. The cover is then secured in position both with respect to the device base or connection piece and with respect to the heating device. Also the device base or the connecting piece can be secured against the heating device additionally or only by this connection against pulling apart against the mounting direction and against lifting off the cover, without bolts between the base and cover.

The cover can be at a distance from this connection to the device base or connector by engagement with its edge in a corresponding base recess and / or be additionally centered by a pivotable mounting around an articulated connection. The cover then expediently passes through the associated outer surface of the heating device and projects into the heating device with an end, for example, closing the attachment, so that the snap connection mentioned can be offset inwards relative to this outer surface.

The respective temperature sensor can also work according to another principle instead of or in addition to the principle of thermal material expansion and preferably has fixed sensing elements which exert the mechanical switching force. The sensor part that transmits the switching force can be under pressure or tension during operation, or it can be the outer tube or the inner rod, various designs corresponding to DE-OSes 35 40 414, 37 05 260 and 39 13 289 (EP-9 01 05 986.5 -2211) are conceivable, to which reference is made for further features, effects and advantages for the purpose of inclusion in the present invention. The same also applies to the adjustment of the sensor, which can be designed in accordance with patent application P 40 92 351.3.

Fig. 1

ein erfindungsgemäßes Temperaturerfassungs-Gerät in Baueinheit mit einem ausschnittsweise gezeigten Wärmegerät in perspektivischer Darstellung,

Fig. 2

die Anordnung gemäß Fig. 1 in Draufsicht und in geringfügig abgewandelter Ausbildung,

Fig. 3

das Gerät gemäß Fig. 1 in Ansicht auf die Eingriffsseite,

Fig. 4

einen Ausschnitt des Wärmegerätes in Ansicht auf die Außenseite,

Fig. 5

eine Baueinheit gemäß Fig. 1 im Axialschnitt und abgewandelter Ausführung,

Fig. 6

ein Ausführungsbeispiel für eine Befestigung in perspektivischer Ansicht auf die Unterseite eines Ausschnittes des Gerätesockels,

Fig. 7

die Anordnung gemäß Fig. 6 in Ansicht auf die Deckseite,

Fig. 8

ein weiteres Ausführungsbeispiel entsprechend Fig. 7, jedoch in perspektivischer Darstellung,

Fig. 9 bis 11

Ausführungsbeispiele für den Geräte-Anschlußbereich des Gerätesockels in perspektivischen Ausschnitten,

Fig. 12

eine weitere Ausführungsform eines Temperaturerfassungs-Gerätes in Baueinheit mit einem ausschnittsweise gezeigten Wärmegerät in Draufsicht,

Fig.13

einen Ausschnitt der Fig. 12 in perspektivischer Ansicht schräg von unten,

Fig. 14

die Anordnung gemäß Fig. 12 in teilweise geschnittener Seitenansicht und

Fig. 15

den Gerätesockel gemäß den Fig. 12 bis 14 in perspektivischer Ansicht auf die Oberseite.

These and further features emerge from the claims and also from the description and the drawings, the individual features being realized individually or in groups in the form of sub-combinations in one embodiment of the invention and in other fields and being advantageous and capable of being protected Can represent designs for which protection is claimed here. Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:

Fig. 1

a temperature detection device according to the invention in a structural unit with a partially shown heating device in a perspective view,

Fig. 2

1 in top view and in a slightly modified design,

Fig. 3

1 in view of the engagement side,

Fig. 4

a section of the heating device in a view of the outside,

Fig. 5

1 in axial section and modified version,

Fig. 6

an embodiment of a fastening in a perspective view of the underside of a section of the device base,

Fig. 7

6 in a view of the cover side,

Fig. 8

7 shows another exemplary embodiment corresponding to FIG. 7, but in a perspective view,

9 to 11

Exemplary embodiments of the device connection area of the device base in perspective sections,

Fig. 12

another embodiment of a temperature detection device in a structural unit with a section of a heating device shown in plan view,

Fig. 13

12 shows a section of FIG. 12 in a perspective view obliquely from below,

Fig. 14

the arrangement of FIG. 12 in a partially sectioned side view and

Fig. 15

the device base according to FIGS. 12 to 14 in a perspective view of the top.

The temperature detection device 1 has an expanded device head 2 and, as a control element, a rod-shaped thin, continuously cylindrical temperature sensor 3. The control element lies in a longitudinal view at a distance from and within the outer contour of the device head 2 and projects freely over an outside of the device head 2 with most of its length. The device 1 is used for attachment to a heating device 4, which is a radiant heating unit here.

The heating device 4 has a flat-shell-shaped, multi-part supporting body 5 with a shell-shaped insulating body 6, a plate-shaped insulating body 7 and a protective or supporting shell 8 made of sheet metal or the like as supporting reinforcement. The insulating body 7 lies essentially completely covering the bottom of the support shell 8 and between the latter and the insulating body 6 such that the insulating body 7 is supported against the bottom essentially only in the region of an outer ring zone. The insulating body 6 has in its area one over its insulating base 11 to the open shell side protruding insulating edge 9. Within its inner circumference, the top of the insulating base 11 is essentially exposed and the outer circumference lies against the inner circumference of the approximately cylindrical shell shell 12 of the support shell 8.

The insulating base 11 and the insulating edge 9 are formed in one piece from one another from a compressed, electrical and thermal insulating material. This contains ceramic fibers and is mechanically inherently stable as a molded body, but not pressure-resistant. The insulating body 7, which is better thermally insulating in comparison, can consist of a compacted bulk material of lower strength. Depending on whether the insulating jacket 9 or the shell jacket 12 protrudes slightly further on the open shell side, the corresponding end face forms a contact surface lying in a contact and heating plane 10, with which the heating device 4 resiliently against the back of a translucent plate or one receiving it Press the support profile so that the shell space is essentially sealed to the outside.

In the case of this heating device 4 and the device 1, the top and top sides are to be understood as the sides lying towards the open shell side and the heating plane 10. However, these can also assume an overhead, an upright or an inclined operating position. A corresponding number of heating resistors 13 and 13a are arranged in concentric spiral turns extending from the insulating edge 9 to a central region on the top of the insulating base 11 in a single or two or more separately switchable heating circuits. According to FIG. 1, these can be electrical thick-film resistors, according to FIG. 2 wire coils, metallic braids, light bulbs in the manner of halogen bulbs or the like and a mixture of such different heating resistors.

The temperature sensor 3 is essentially contact-free in the room and at a distance from and between the heating resistors 13 and the heating plane 10 approximately parallel to the approximately flat insulating floor 11. The device head 2 lies with most of its extension parallel to the temperature sensor 3 freely on the outside of the heating device 4, namely in connection to the outer circumference of the support body 5, the device head 2 between and at a distance from both the heating plane 10 and the bottom of the heater 4 or support body 5 facing away therefrom, so that it only over the jacket surface of the heater 4 stands out.

The temperature sensor 3 or part of the device head 2 passes through the shell jacket 12 and the insulating edge 9, over the inner circumference of which the temperature sensor 3 protrudes across the heating resistors 13. As a result, the temperature sensor 3 is heated by the direct radiation emitted by the heating resistors 13, the retroreflection of the plate or a cooking vessel placed on it, and the air temperature within the essentially closed equipment compartment, so that the temperature sensor always assumes a temperature which is in the region of the highest , temperature occurring due to the operation of the heating device 4 and is at least as high as the highest temperature of the glass ceramic plate in the area of the heating device 4.

The temperature sensor 3 has two reference bodies which extend essentially over its length and have different thermal expansion coefficients. Of these bodies, one can be made of a mineral or ceramic material with the lowest expansion coefficient and one consist of a metallic material, such as steel, with a relatively high coefficient of expansion. The reference bodies are formed here by an outer tube 14 made of quartz glass and an inner rod 15 made of metal inserted therein with radial play, both of which have continuous cross sections as strand sections over their entire length and do not require any further post-processing after being cut to length by a profile rod.

In the area of the free end, which is distant from the device head 2, the outer tube 14 and the inner rod 15 are fixed to one another in their longitudinal direction by an adjustment 16. This has an abutment 18, which abuts the associated end face of the outer tube 14, has approximately the same outside width, and an adjusting member 17, which is inserted in its central bore and has a bolt-free thread. The outwardly projecting adjusting member 17 initially engages in the abutment 18 essentially without radial play, but is longitudinally displaceable and, after the adjustment, is non-detachably connected to the abutment 18 by an adhesive or welded connection. The inner end face of the adjusting member 17 lying inside the outer tube 14 then forms a pressure contact surface for the associated outer end face of the inner rod 15.

The outer surfaces of the device head 2 are essentially formed by a device base 19 made of pressure-resistant electrical insulating material, such as hard ceramic. The inner ends of the outer tube 14 and the inner rod 15 lying at or within the device base 19 form reference or control surfaces which, due to temperature changes in the temperature sensor 3, perform longitudinal movements relative to one another, and this relative movement serves to derive a corresponding actuation. The inner end of the inner rod 15 projects beyond that of the outer tube 14, the end face of which a shoulder surface of the device base 19 rests biased under spring force. The inner end of the inner rod 15 carries, for example by means of a threaded connection, an enlarged collar, the inner end surface of which forms the associated control surface 27.

The inner end of the inner rod 15 acts on a rod-shaped actuating member 26 made of electrical insulating material or the like, which is displaceably mounted with it within the device base 19. Within pocket-shaped depressions, the device base 19 carries two in the longitudinal direction of the temperature sensor 3, one behind the other and each essentially in a flat switch 24, 25 arranged in the form of snap switches arranged transversely to the temperature sensor 3 main plane. Of these, one can be a power switch 24 for directly switching the heating resistors 13 and a signal switch 25 for controlling a display device, such as a hot display.

The control surface 27 acts upon thermal elongation of the inner rod 15 directly on a contact or snap spring of the switch 24 in the sense of a positively controlled contact opening. A corresponding control surface provided on the actuating member 23 also acts directly on such a spring of the switch 25 in the sense of releasing this switch for automatically resilient caster in its closed position in the case of such a longitudinal expansion.

The adjustment 16 is provided for the switch 25, while the adjustment 28 for the switch 24 is accessible from the side of the device head 2 remote from the temperature sensor 3. With the adjusting member 29 of this adjustment 28, the control surface 27 can be adjusted relative to the rest of the inner rod 15.

The device base 19 forms a connection piece 20 laterally adjacent to the temperature sensor 3, which is provided as an intermediate piece for the electrically conductive connection of the heating resistors 13 and the device lines (not shown). The insulating body of this connector 20 is formed by an extension 21 of the device base 19, and this extension 21 passes through the temperature sensor 3 on both sides essentially uniformly so that the temperature sensor 3 is approximately in the middle of its width and / or height or that of the rest of the device base 19 lies. On the side facing away from the connection piece 20, the attachment 21 encapsulates a holder 22 for the temperature sensor 3, while in the area of the connection piece 20 it receives connection elements 23 for the electrically conductive connection with the heating resistors 13.

Three parallel connection elements 23, of which at least one could also lie within the extension 21, are parallel to one another and to the temperature sensor 3 via the end face or engagement side 31 of the extension 21 penetrated by this, which according to FIG. Fig. 2 is essentially continuously free or flat up to the peripheral surfaces of the projection 21. At the rear end project over both side surfaces of the approach 21 laterally web-shaped flanges 33 which, like the approach 21, are formed in one piece with the rest of the device base 19 made of insulating material, such as hard ceramic, and also project laterally over the rest of the device base 19.

From the engagement side 31 to the front, approximately flat end faces of the flanges 33, the device base 19 forms a front base section 30 and from this point to its rear end a rear base section 32. The extension 21 has a substantial width smaller length and forms a plug-in projection protruding freely in the same direction as the temperature sensor 3, the outer surfaces of which are approximately parallel to the plug-in direction and are at least partially essentially smooth. In a longitudinal view of the temperature sensor 3, the base section 32 or the remaining base part located behind the flanges 33 can protrude laterally on one or both sides, on the underside and / or on the top.

With the extension 21, the device 1 is inserted into engagement openings 34, 35 of the heating device 4, namely the insulating edge 9 and the shell edge 12 approximately in the longitudinal direction of the temperature sensor 3, radially to the heating device 4 or parallel to the heating plane 10. According to FIG. 1, the projection 21 can have a lateral gap distance from at least one engagement opening or, according to FIG. 2, can connect to the associated boundaries of one or both engagement openings essentially without a gap. The approach 21 can lie with its flat underside on the insulating base 11, the insulating body 7 and / or a recessed, and over the top of the insulating base 11 higher lying shoulder surface of the insulating edge 9, so that a very good centering and support of the device 1 against each other the heater 4 results. At the same time, the extension 21 or the base body 19 can close the heating device 4 in the area of the engagement openings 34, 35 essentially tightly, so that a sealed, heated space is created after the assembly of the entire structural unit on the plate.

The front end faces of the flanges 33 form abutment surfaces 36, which abut on both sides laterally on the outer circumference of the shell edge 12. Correspondingly, the front end face of the base section 32 lying in the plane of the contact surfaces 36 can adjoin the lower end Limitation of the engaging opening 35 and / or subsequently bear against its upper boundary in a closing manner on the outer circumference of the shell edge 12, so that a frame-shaped closed contact results around the engaging opening 35. These contact surfaces 36 are expediently clamped against the peripheral surface.

The so very precisely aligned connection elements 23 and the temperature sensor 3 are nevertheless arranged together with the device head 2 in a resilient manner with respect to the electrical heating, because the device head 2 due to its essentially play-free connection with the shell edge 12 and / or the parts of the insulating body adjoining the extension 21 forms a spring arrangement. These allow in particular elastic tilting movements about axes parallel to the heating plane 10. The temperature sensor 3 can in turn also be moved a small amount in all directions transversely to its central axis with respect to the device base 19 and can be resiliently returned to its starting position by the holder 22, so that it is damped against strong impact loads.

The straight temperature sensor 3 lies in a plane 37 which is approximately parallel to the heating plane 10 and somewhat further away from the heating plane 10 than the cover side 38 of the appliance base 19 which is also parallel thereto. The connecting elements 23 emerge from the engagement side 31 in at least one plane 39. This connection level 39 is further away from the heating level 10 than the level 37, but lies at a short distance above the insulating base 11 and the heating resistors 13. All the connection elements 23 lie on one side of the axial level 40 of the straight temperature sensor 3, which is perpendicular to the heating level 10, while the bracket 22 is substantially on the other side.

The outer spiral arcs of the heating resistors 13 are formed in the region of the connection elements 23 and adjacent to the inner circumference of the insulating edge 9 as connection parts 41 directed against the latter. These are made in one piece with at least half or a whole spiral arc of the respective heating resistor 13 and are used for direct connection to the associated connection element 23. The connection elements 23, which initially overlap slightly with the gap spacing, overlap the associated connection part 41, due to their resilient or deforming flexibility brought to the insulating base 11 in contact with the respective connecting part 41 and then connected to it by welding.

In the case of FIG. 1, the connecting parts 41, like the other heating resistors 13, are anchored to their free ends with respect to the insulating base 11 by means of fastening over the entire surface, while according to FIG. 2 the connecting parts 41a are formed by straight-line end sections of the wire coils and therefore themselves to be brought together the connecting parts 23 can be moved relative to these.

The device base 19 has a larger number of recesses in its cover side 38, in which the temperature sensor 3, the switches 24, 25, two connection elements 23 closest to the temperature sensor 3, as well as other components such as connecting elements, tension springs or the like, transversely to the cover side 38 are inserted in an assembly direction arrow 45. In an insertion direction arrow 43 parallel to this, the holder 22 is also inserted in such a way that it is held in a self-locking manner by a plug connection 42 which lies on the side of the temperature sensor 3 remote from the connector 20.

Each connecting element 23 merges in one piece and essentially with the same cross sections into a connecting conductor 46 located within the base sections 30, 32, each of which lies in a separate groove 47 in the cover side 38. The connecting conductor 46 lies essentially over its entire length in the plane 39 on the groove bottom. The connecting conductor 46 closer to the temperature sensor 3 merges in one piece into an angled contact carrier 48 for the switch 24 closer to the engagement side 31. The adjacent connecting conductor 46 merges in one piece into a connecting member 49 which projects approximately parallel to the cover side 38 and transversely to the temperature sensor 3 from a first connecting side 50 of the device base 19.

2, these connecting elements, connecting conductors and contact or connecting members are located in the area of a recessed corner zone which is delimited on one leg by the temperature sensor 3 and on the other leg by the switch 24. Relocated to the rear relative to the connecting member 49, there is another, identical connecting member 51 on the connecting side 50. This is provided for the switch 24 and is formed in one piece with the switch carrier. The connectors 49, 51 can e.g. as tabs, lie in a common plane. The connection side 50 lies at an angle to the engagement side 31 and to the cover side 38 in connection to the rear side of the associated flange 33.

The third, the most distant from the temperature sensor 3 and the shortest connection element 23 is inserted from the underside 44 facing away from the top side 38 into the device base 19, including its connecting conductor 52 also in a corresponding groove-shaped recess. According to FIG. 2, its connecting member 53 projects freely between the connecting members 49, 51 on the connecting side 50.

According to FIG. 3, this connecting conductor 52 can rise from the connecting member 53 within the device base 19 by bending to the level of the associated connecting element 23 and thus cannot lie in a single plane like the other connecting conductors. On the side facing away from the connection side 50, the device base 19 forms a second connection side 54 with freely projecting connection members 55 for the switch 25. These tabs can lie in the plane of the connection members 49, 51 and are like these between the levels of the rear base end and the back of the flanges 33 and on the other hand the top side 38 and the underside 44 are provided.

After the device 1 has been plugged into the heating device 4, it is only necessary to secure it against being pulled off in the opposite direction of insertion and, if necessary, for bracing against the support body 5 or the support shell 8 without play. For this purpose, only two fastening members 56 are required on either side of the engagement opening 34 or 35, each of which lies between the top side 38 and the underside 44 approximately in the middle of the height or thickness of the base section 30 or 32. At least one or all of the fastening members 56 are formed in one piece with the shell jacket 12 and protrude from its outer circumference approximately at right angles with a shaft section which has a cabinet bracket at the free end as head 58.

3, the head 58 can be provided in a plane lying transversely to the cover side 38 or, according to FIG. 4, in an approximately parallel plane. In the respective flange 33, an engagement opening 57 for the shaft of the fastening member 56 is provided with a slot-like opening limited over the entire circumference. This is closely adapted to the head 58 and through it the head 58 runs when the device 1 is inserted into the engagement openings 34, 35 through. Thereafter, the head 58 is rotated about the shaft axis and thereby braced relative to the rear of the flange 33, so that the device 1 with the contact surfaces 36 is pulled against the outer circumference of the shell jacket 12.

The engagement side 31, which in the manner of an end wall can have relatively closely adapted passage openings for the temperature sensor 3 and / or the respective connection element 23 and thereby forms a thermal shield, then delimits the inner circumference of the heated space in the area of the engagement opening 34 as an almost continuously connecting intermediate section . At least one or all of the fastening elements could instead also be snap-in elements which automatically snap into a locking position when the device 1 is plugged in, since the device 1 is already positively secured against movements in all other directions by the engagement of the extension 21 and only secured with little movement is. This is particularly the case if the parts made of insulating material bear with prestress on the associated outer surfaces of the extension 21 in such a way that they are resiliently compressed in this area and can therefore also fit particularly tightly. After assembly, the base section 32 with all the switches 24, 25 and connecting members lies outside the heating device 4.

Essentially all of the recesses of the device base 19 starting from the cover side 38 are closed with a flat cover 59 which extends from the rear base end to the extension 21 and approximately to the level of the engagement side 31 and over which the flanges 33 project laterally. The plastic cover 59 has the bending spring properties of a leaf spring and has its entire length essentially constant width, so that it protrudes laterally in the area of the projection 21 on both sides.

Instead of or in addition to the fastening members 56, this cover 59 can be included in a fuse 60 for fixing the position of the device 1 relative to the heating device 4. For this purpose, the cover 59 is brought into direct engagement with the shell edge 12 via one or more snap connections 61 which are approximately symmetrical to the center of its width or to the axial plane 40 and by engagement in slots 62. In addition, the lid 59 is spaced apart from or from the bowl edge 12, e.g. at a short distance from its and the rear end of the device base 19, by means of a centering 63 parallel and / or at right angles to its plane relative to the device base 19.

The centering 63 can be a recessed receptacle of the cover 59 in the device base 19, a plug connection made in each case in one piece with the device base 19 and the cover 59, and / or a connection with a separate fastening member, e.g. a rivet bolt. The bolt engages in aligned openings of the device base 19 and the cover 59, if necessary, in such a way that the cover 59 can be pivoted in its plane relative to the device base 19 between a closed and open position.

The snap connection 61 has a snap member 64 which is formed in one piece with the support shell 8 and which, appropriately, protrudes in a web-like manner from the upper boundary of the engagement opening 35 to its opposite boundary. The snap member 64 only needs to be assigned a closely adapted opening as a counter member or snap opening 65 in the cover 59. In addition, the engagement opening 35 is continued its associated upper limit or in the region of the side edges of the cover 59 is widened by slots 62, into which the edges of the cover 59 projecting laterally beyond the shoulder 21 engage with a slight sliding fit. Thus, the cover 59 is positively secured against movements transversely and parallel to its plane by the support body 5.

When the device 1 is inserted into the heating device 4, the edges of the cover 59 are guided into the engagement opening 35 in the slots 62 when the attachment 21 begins to engage. At the same time, the snap member 64 slides on the outside of the lid 59 in that the latter and / or the region of the shell edge 12 carrying the snap member 64 is pressed back resiliently. At the end of the insertion movement, the snap member 64 automatically snaps into the snap opening 65. As a result, the base section 32 is secured against tilting movements away from the heating plane 10.

In the case of the embodiment according to FIG. 3, the cover 59 lies at a short distance from the cover side of the attachment 21, while according to FIG. 5 it also closes the attachment 21 on the cover side. Snap members 64 can also be offset laterally in relation to one another and / or by bending relative to the peripheral surfaces of the shell edge 12 inwards or outwards, as shown in FIG. 1.

2, both the engagement opening 34 and the engagement opening 35 to the heating plane 10 are open over their full width. 4 is slot-shaped transversely to the heating plane 10, but its width is closely matched to the outer circumference of the temperature sensor 3, so that it can carry out unobstructed small movements transversely to the heating plane 10. However, the engagement opening 34 can also be completely closed over its circumference according to FIG. 5, in particular if the insulating edge 9b is formed by a component which is separate from the insulating base 11b and which stands up over the entire surface on the upper side of the insulating base 11b. The insulating edge 9b can form an end wall 66 of a pocket following the engagement side 31. This is accessible from the outer periphery of the insulating edge 9b for receiving the shoulder 21, lies essentially over the entire outer periphery of the shoulder 21 and its bottom is penetrated by the engagement opening 34. The end wall 66 thereby forms a further thermal insulation for the components located in the device base 19.

5, the approach 21 is spaced above the top of the insulating base 11b. One to all the connecting elements 23b are angled in two opposite directions so that two joints which are approximately parallel to one another and to the level of the heating resistors 13 are formed. These allow the free connection end of the respective connection element 23b to be resiliently adjusted transversely to the insulating base 11b without changing its position parallel to the connection plane.

The outer winding ends of the heating resistors 13, 13a, 13b to be connected to the connecting elements 23 can also be passed transversely to the temperature sensor 3 between the latter and the insulating base 11 or penetrate the axial plane 40. For example, if the holder 22 and the connecting piece 20 are arranged reversed on both sides of the temperature sensor 3 with respect to the configuration shown, or if the winding direction of the spirals of the heating resistors 13, 13a is reversed with respect to the direction shown. As a result, the heating field would also be occupied with heating sections in front of the engagement side 31 of the device 1. In the illustrated embodiment, there is an unheated field, the width of which is approximately two, in front of the connection piece 20, the outlet of the temperature sensor 3 from the device base 19 and the holder 22 corresponds to four turns of the heating resistors 13. This area of the device head 2 protruding into the heating device 4 is thus subjected to relatively little thermal stress.

As a result of the design described, not a single connecting conductor lying outside the device head 2 and device base 19 or the heating device 4 is required to connect the heating resistors 13, 13a, 13b. All connecting conductors 46, 52 lie both in view of the heating level 10 and in view parallel to the heating level 10 and transversely to the central plane 40 essentially completely within the common outer contour of the heater 4 and device head 2. The unswitched connection conductors 46, 52 are also within the Device base 19. The connecting conductors or connection elements could bridge a small gap between the device base 19 and the outer surface of the supporting body 5 unprotected and uninsulated. Here they emerge from the device head 2 only within the heating device 4. In any case, all connection elements and connecting conductors can be formed as bare metal parts without a separate insulating jacket. They can also be electrically insulated exclusively by the base sections 30, 32 and the insulating supports of the heating device or be protected against unwanted contact by the position in the region of the gap.

The individual metallic components fixedly arranged on the device base 19, in particular the connecting elements, connecting conductors and associated connecting members, can be secured in various ways with respect to the base body against relative movements essentially without play. It is particularly expedient if, according to FIGS. 6 and 7, the corresponding component is provided with a single or more angled bending or cabinet brackets 67. For their passage there is a plug opening in the device base 19c 68 provided. After inserting the component from one side 38c into the device base 19c, the part of this cabinet bracket 67 protruding beyond the other side 44c can be bent accordingly and the component can thereby be braced against the associated mounting surface.

The components having the connection elements 23c have between the connection element 23c and the associated connection element 53c an intermediate section which is angled or inclined with respect to them in view of the cover side 38c. Its bend can lie approximately in the middle of the length of the associated connecting conductor 46c. In this case, the cabinet bracket 67 is suitably closer to the free end of the connector 53c than that of the connector 23c e.g. provided after the inner end of the connector 53c. Thus, the connecting element 23c with the associated section of the connecting conductor 46c can be moved relatively easily transversely to the heating plane relative to the base 19c or can be lifted off from its contact surface. At least one of the carrier webs of the switches 24, 25 can also be fastened with at least one of the tabs mentioned.

8, at least one of the components mentioned can also be fastened to the device base 19d by means of an adhesive connection which is expediently temperature-resistant or temperature-stable up to at least 200 ° C. or 300 or even 400 to 500 ° C. As a result, no fastening parts need to protrude beyond the fastening surface of this component, and non-electrically conductive parts can also be fastened to the base 19d in this way. The adhesive connection is expedient in such a way that it takes place by heating and / or pressure and subsequent cooling. The temperature of the heating, for example the melting temperature for producing the adhesive effect, can be above the maximum thermal load of the device 1. A solder layer, a thin ceramic or glass layer or the like can be used as the connection layer separate from the device base 19d and from the component to be fastened. This is expediently first applied to the assembly surface by lamination or printing, after which the connection to the connection surface of the respective component is made.

The thickness of the connection layer is expediently in the μm range, so that the connection surface of the component can also partially directly abut the mounting surface of the device base 19d or only have a gap distance from it which is of the order of magnitude mentioned. The material of the connecting layer is expediently such that it can penetrate both into the pores of the mounting surface and those of the connecting surface and can thereby be anchored practically inextricably.

In order to be able to design the device 1 for different connection conditions determined by the main device or its device lines without any particular effort, one to all the connecting members 49e, 51e, 53e according to FIGS. 1 to 11 are designed as support bases for one or more connecting bodies 70. Of these, the respective one expediently projects over the free end of the associated connecting member 51e. The connecting body 70, which is expediently formed essentially from the same sheet material as the connecting elements as a stamped and bent part, has a freely projecting, angled fastening leg 69. Its width is approximately the same as or smaller than the width of the associated connector 51e and the length can be of the order of this connector 51e.

The fastening leg 69, which is flat in cross-section, can be applied with one flat side essentially over the entire surface to the lower or upper flat side of the fastening member 51e and connected to it by welding. The fastening leg 69 merges in the region of the free end of the connecting member 51e into a connecting leg 71 of the same width angled transversely to its plane. This can be directed away from the fastening side of the connecting member 51e or towards the cover side 38e. 11, it can also be angled toward the opposite side of the fastening member 51e or towards the underside 44e. Leg 71 may also abut the end flank of link 51e for multiple alignment.

This connecting leg 71 merges in the region of its free end via at least one further angled portion directed away from the device base 19e or the connecting side 50e into at least one connecting member 72 lying freely on the outside of the device base 19e. This is advantageously formed by a flat tongue and lies in a plane which is provided transversely or at right angles to that of the connecting member 51e.

According to FIGS. 9 and 11, two approximately parallel connecting members 72 lie adjacent to one another transversely to their planes with a distance that is only slightly greater than their thickness. 9 protrude freely against the plane of the underside 44e and according to FIG. 11 against the plane of the top side 38e. 10, the connector body 70 has only a single connector 72, which lies in a plane approximately parallel to the connector side 50e. According to FIGS. 9 and 11, the connection members 72 are approximately parallel to the connection side 50e. Through the connector body 70, which are formed in one piece throughout, the direction of insertion to connect the mating connector of the device lines transversely to the direction of insertion of the connecting members 49e, 51e, 53e, the insertion direction of which is transverse to the connection side 50e. The respective connection body 70 is also at a distance from and between the planes of the top side 38e and the underside 44e.

Figures 12 to 15 show a particularly advantageous embodiment, because a device 1f can be used here using simple components, which requires only very minor changes compared to the device according to DE-OS 39 13 289. Reference is made to this document to incorporate the features into the present invention. To transfer the device base shown there into the device base 19f, the tools only have to be modified so that the extension 21f is still attached and that receptacles for the connection elements 23f are still provided on the long side 38f and the underside 44f. 1, the inner rod 15 may be subjected to tension, in the embodiment according to FIG. 12 it may be subject to compression, whereby thermal compensation of the switching characteristics depending on the heating state of the device 1f or the device head 2f is possible in a much simpler manner .

The circuit breaker 24f is further away from the end face 31f than the additional switch 25f. The holder 22f for the temperature sensor 3f is formed by a plug-in connection 42f, but is braced with the fastening members 56f parallel to the temperature sensor 3f relative to the base 2f. The plug-in body of the temperature sensor 3f, formed by a U-shaped bracket and a plate connecting its legs, simultaneously forms the only connection between the device head 2f and the heating device 4f. The approximately parallel to the end face 31f and sunk in this lying plate forms one leg of a two-leg angled holder 73, the other leg 74 on the underside of the bottom of the support shell 8f, z. B. with welding spots, is attached without play. The plate leg lying approximately parallel to and at a distance from the shell casing 12f is braced with the fastening members 56f with respect to the device base 19f, which are formed by the legs of the plug-in bracket. Fastening members 56f can be offset approximately in the plane 37 of the temperature sensor 3f and / or in contrast to the underside 44f, so that, for. B. four fastening members 56f are provided at the corners of an imaginary rectangle. In the operating position, the heads 58f of the fastening members 56f lie in the gap between the end face 31f and the outer circumference of the shell casing 12f and at a short distance from this shell casing 12f. By means of the holder 73, which is made of sheet metal and can be moved in a resilient manner, the device head 2f with the temperature sensor 3f can carry out the aforementioned movements relative to the heating device 4f in a self-resetting manner.

The connection piece 20f integrated without play with the device head 2f lies completely and at a distance outside the heating device 4f, extends at most to the end face 31f and is at a distance from the base side facing away from it. It is formed by a projection 21f made of hard ceramic or the like protruding transversely to the axial plane 40f on one side of the remaining base 19f, which is formed in one piece with the base 19f or the base portion 32f and forms the base portion 30f. The base section 32f is provided for receiving the control parts and determines the associated width of the device base 19f which is perpendicular to the axial plane 40f and which is several times greater than the widening by the base section 30f. The approach 21f can extend approximately from the top 38f to the bottom 44f and on the front be bounded by an approximately flat continuation of the end face 31f.

The device 1f is provided here for controlling only a single heating circuit, which is why only two connection elements 23f are required. The extension 21f essentially receives a connecting element 23f with the associated connecting member 49f. The other connection element 23f engages both in the base section 32f and in the base section 30f and is controlled via the circuit breaker 24f in that it is conductively connected to its fixed support for the movable snap contact. The connecting element 23f, which is directly connected to the connecting element 49f, is inserted into a groove-like recess 47f in the cover side 38f by a multiple of its sheet thickness, and the connecting element 49f is inserted recessed into a recess in the underside 44f facing away from it. In view of the heating plane 10f, the connection element 23f lies, in addition to the control element 3f, also at an acute angle to the connection element 49f such that these components overlap one another with their inner ends, but are separated from one another as separate components by insulating material of the extension 21f. The connecting conductor 52f for these components is in this case another separate component, e.g. B. a rivet that penetrates an opening in the material of the projection 21f, the two components 23f, 49f clamps against opposite sides of the projection 21f and also creates the line connection between the components 23f, 49f.

The controlled connection element 23f is recessed in a corresponding recess in the underside 44f and its inner end coincides with a support plate 48f of the contact carrier in view of the cover side 38f, so that these two areas, as described with reference to the connecting conductor 52f, can be attached with a separate connecting conductor 46f without play and can be conductively connected to one another.

The two connection elements 23f lie transversely to the cover side 38f at a small distance from one another on sides of the appliance base 19f which face away from one another, the connection plane 39f being able to be understood as the middle plane between the planes of the two connection elements 23f. The closer connection element 23f, which is closer to the underside 44f, expediently lies approximately in the plane of the connection elements 49f, 51f, 55f, from which the plane of the uncontrolled connection element 23f is at a distance which is substantially less than the height of the base body 19f or half or half is a quarter of it. In a view of the cover side 38f, the two strip-shaped connecting elements 23f lie obliquely to the axial plane 40f or to the end face 31f and approximately parallel to one another, the two connecting conductors 46f, 52f or the connecting element 49f approximately in a common central or, respectively, perpendicular to the temperature sensor 3f Axial plane are provided.

The connection areas formed by the free ends of the connection elements 23f lie at a short distance from the plane of the end face 31f. The controlled connection element 23f emerges from the end face 31f and lies directly adjacent to it and offset inwards with respect to the plane of the end face of the extension 21f. The uncontrolled connecting element 23f emerges from an inclined surface 36f which connects at an obtuse angle to the end face 31f and the end face of the extension 21f, from which the connecting member 49f emerges at approximately a right angle. The uncontrolled connection area is offset to the outside relative to the plane of this end face, but does not project any further than the connection element 49f.

In view of the cover side 38f, the distance between the two connection elements 23f is approximately in the order of their strip width, so that there is a very small distance between their connection areas. The distance between the two connection areas from the plane of the end face 31f is approximately the same and their distance from the outer circumference of the heating device 4f is approximately in the order of magnitude of their width. Since the end face 31f and the inclined surface 36f delimit a gap with this outer circumference, the connection regions are accessible from the top side 38f, the underside 44f and the end surface of the extension 21f in order to connect them to the connection parts of the heating resistor 13f.

The connecting members 49f, 51f are also freely accessible from these sides in order to connect the device lines. The connecting member 49f protrudes approximately by the length of the extension 21f than the connecting member 51f, which is protected in the recessed corner between the extension 21f and the rear end face of the base 19f at a short distance from the extension 21f and does not protrude further than this. This connector 51f, like the other connectors 49f, 55f, is recessed into the underside 44f and is conductively connected and fastened to the fixed contact of the switch 24f via a connecting conductor of the type described. Two to all the connecting members 49f, 51f, 55f lie in a common plane, at a distance between the planes of the end faces 31f of the base 19f and in an approximately parallel connection or plug-in direction, if necessary, for a common plug.

To form the connection areas, the free end of the respective connection element 23f can be angled toward the cover side 48f, so that at least one end leg which is transverse to the cover side 38f is formed. If two end legs are provided next to one another and / or at an angle to one another, a receiving prism can be formed between them, in which the respective connecting part 41f can be used in a stop-limited manner both parallel to its longitudinal direction and transversely to the heating plane 10f or in the plugging direction 43f such that it is then centered against transverse movements approximately parallel to the heating plane 10f. By means of a welded connection or the like, the connection part 41f can then be fixed in a conductive manner with respect to the connection area, in particular on its strip section which is approximately parallel to the heating plane 10f and is also exposed. The respective connection element as well as the respective connection element is set back at a distance from the heating plane 10f as well as from the plane of the underside of the heating device 4f in the working position.

Fig. 12 shows two ways of forming the respective connection between a connection of the heating resistor 13f and a connection element 23f, both or all connection connections can also be formed the same. The respective end portion of the heating resistor 13f is e.g. B. stiffened by a connector 75 in that it is tightly wrapped in tight turns around an approximately parallel to the heating plane 10 projecting leg 76 of the connector 75. Between this leg 76 and a leg 77 projecting freely or transversely to the heating plane 10, the connecting piece 75 forms an approximately U-shaped bracket 78, one bracket leg of which is formed by the leg 77 and from the other bracket leg of which the leg 76 is angled outwards . With the bracket 78, the connecting piece 75 can be anchored in position in the insulating base 11f by pressing or the like so that the legs 76, 77 are essentially exposed.

The connecting part 41f can now be made in one piece at least with the subsequent heating section of the heating resistor 13f or formed with its closely adjacent turns or be an end portion of the associated resistance wire. The end of the tightly laid windings can lead to leg 77, be fixed relative to it by approximately one to multiple wrapping and then lead to the outer periphery of heating device 4f up to the connection area of connecting element 23f and be connected to it without further intermediate elements. It is also conceivable to completely dispense with a connecting piece 75 and to fix the outwardly directed end section of the resistance wire or the connecting part 41f only directly opposite the insulating body 6f. In any case, the connecting part 41f can be sunk or pressed into the insulating base 11f and / or the insulating edge 9f essentially without play and thereby be encased by an insulation which secures it in a contact-free manner with respect to the shell casing 12f.

For example, the insulating edge 9f can be placed as a separate component on the essentially continuously flat upper side of the insulating base 11f, so that the connecting part 41f is then fixed between the annular lower end face of the insulating edge 9f and the upper side of the insulating base 11f. The shell jacket 12f has a passage opening for the passage of the respective connection part 41f, which is considerably wider than the connection part 41f, the connection part 41f being centered in a fixed position relative to this passage opening by the insulating body 6f, so that the insulating body 6f forms the passage insulation directly and not one separate insulating body is required.

In order to avoid axial and / or rotating relative movements between the insulating body 6f and the electrically conductive support shell 8f, these two components are positively fixed to one another via securing members 79. These security links 79 can e.g. B. be cut out of the shell jacket 12f sheet metal tabs, which are pressed into the outer circumference of the insulating body 6f after the insertion of the insulating body 6f with bending in such a way that they form depressions in which they engage in a form-fitting manner. Several securing members 79 are distributed over the entire circumference.

The second connecting part 41f according to FIG. 12 is formed by a separate, linear wire rod, the cross sections of which are smaller than that of the connecting piece 75, which is also bent from wire, and larger than that of the heating resistor 13f. This separate connecting part 41f is attached tangentially to the circumference of the leg 77 immediately adjacent to the top of the insulating base 11f, passes through the insulating edge 9f and the shell jacket 12f and is connected at its outer end to the associated connecting element 23f. This connecting part 41f can also be secured in position in the manner described with respect to the insulating body 6f. The connecting part 41f can also be connected directly to the heating resistor 13f without a connecting piece 75 and for this purpose form an angled leg which has the functions described with reference to the leg 76.

For the rest, the same reference numerals are used in all figures for corresponding parts, but possibly with different letter indices, which is why all parts of the description apply equally to all embodiments. A plurality of connecting pieces or attachments and / or temperature sensors can also be provided on the same device base or separate device bases or devices 1, which is why the individual features can be implemented independently of one another on corresponding separate components. All features of the training according to Figures 1 to 11 can also be implemented in the embodiment according to FIGS. 12 to 15.

Claims (19)

Temperature detection device for heating device units (4), characterized in that it is designed for an easily accessible connection to at least one heating device unit. Temperature detection device for heating device units (4), which determine an outer boundary of a working area, preferably with at least one device base (19, 19f), the outside and at least one in its working position to be arranged closest to the working area of the heating device (4, 4f) Front side (31, 31f) and at least one conductive connection element (23, 23f) for connecting directly into the heating device (4, 4f) with at least one connecting part (41, 41f) at least one within the outer limits of the heating device (4, 4f) lying consumer, such as a working resistor (13, 13f), characterized in that at least one connecting element (23, 23f) in the working position of at least one device base (19, 19f) at least in the area at least one end face (31, 31f) is accessible for establishing a connection. Device according to Claim 2, characterized in that at least one device base (19, 19f) has at least one control element (3, 24, 25 or 3f, 24f, 25f), such as a sensor (3, 3f), a switch (24, 25 or 24f, 25f) or the like. in particular that a device base (19, 19f) forms a preassembled unit with an essentially single connection body (20, 20f) for the heating device (4, 4f) and that preferably a device base (19 , 19f) is formed at least partially in one piece with a connection body (20, 20f) and / or at least one connection element (23, 23f) projects substantially as an arm from an appliance base (19, 19f). Device according to claim 2 or 3, characterized in that at least one connection element (23, 23f) and at least one connection element (49, 53 or 49f) for a device line within a device base (19, 19f) are directly conductively connected to one another without interruption contacts that in particular at least one connection element (23, 23f) and at least one associated connection element (53, 49f) are offset from one another transversely to a connection plane (39, 39f) and that preferably at least one connection element (23, 23f) and at least one associated connection element ( 49, 53 or 49f) are conductively connected to one another via a connecting conductor (52, 52f) lying transversely to a connection plane (39, 39f) and / or are inserted from essentially opposite sides of a device base (19, 19f). Device according to one of the preceding claims, characterized in that at least one connection element (23, 23f) is closer to an end face (31, 31f) of a device base (19, 19f) than to a side facing away from it, in particular that at least one connection element (23 , 23f) protrudes at least up to or up to an end face (31 or 31f) of a device base (19, 19f) and that preferably at least two connecting elements (23, 23f) are offset from one another transversely to a central connecting plane (39, 39f) and / or protrude differently beyond at least one outside (31 or 31f, 36f) of a device base (19, 19f). Device according to one of the preceding claims, characterized in that at least two elongated connecting elements (23, 23f) lie elongated approximately parallel to one another, in particular that at least two connecting elements (23, 23f) from essentially opposite sides into a device base (19, 19f) are used and that preferably at least two connection elements (23, 23f) are directly adjacent to one another in view of a connection level (39, 39f) and on an end face (31, 31f) of the device base (19, 19f) without any further electrical conductors in between. Device according to one of the preceding claims, characterized in that essentially all connection elements (23, 23f) and / or connection elements (49, 51, 53, 55 or 49f, 51f, 55f) for device lines approximately parallel to a connection level (39, 39f), that in particular at least one connecting element (49, 51, 53, 55 or 49f, 51f, 55f) in view of a connecting plane (39, 39f) on at least one side of a device base transverse to an end face (31, 31f) (19, 19f) lies and that preferably at least one connection element (23, 23f) is provided at an angle to at least one connection element (49, 51, 53, 55 or 49f, 51f, 55f). Device according to one of the preceding claims, characterized in that at least one device base (19, 19f) has at least one control element (3, 3f) projecting from an outer side (31, 31f), in particular one control element (3, 3f) and at least one Connection element (23, 23f) in view of a connection plane (39, 39f) essentially on a common outside (31, 31f) of a device base (19, 19f) or at an acute angle to one another and that preferably at least one connection element (23, 23f) and a control element (3, 3f) projecting freely in the form of a rod are mounted on a device base (19, 19f) from the same and / or from essentially opposite sides. Device according to one of the preceding claims, characterized in that at least one connecting element (23f) is elongated in a view of a connecting plane (39f) obliquely to at least one end face (31f) of at least one device base (19f), in particular that at least one connecting element (23f) in view of a connection plane (39f) in the area of a corner zone (36f) of a device base (19f), which is formed by an intermediate surface (36f) which does not adjoin adjacent outer sides (31f) at right angles and that preferably at least one connection element (23f) and / or an end face (31f) of a device base (19f) in the working position is at a distance outside the outside of the heating device (4f). Device according to one of the preceding claims, characterized in that a device base (19, 19f) forms at least two base sections (30, 32 or 30f, 32f), or at least one with an engagement side (31) for engagement in the heating device (4) trained approach (21) of a connecting piece (20), in the region of its engagement side (31) at least one connecting element (23, 23b, 23c, 23d, 23e) for the electrical connection of at least one connecting part (41, 41a) of the Heating device (4) is accessible that in particular a connector (20, 20f) and essentially the rest of the device base (19, 19f) form another of the base sections (30, 32 or 30f, 32f) made of an electrical insulating material and that preferably a control member (3, 3f) projects transversely and freely over and / or out of the end face (31, 31f) of the extension (21, 21f). Device according to one of the preceding claims, characterized in that at least one connecting element (23, 23f) protrudes in at least one direction as a connecting lug in at least one direction relative to a device base (19, 19f), that in particular the device (1, 1f) has a heating plane in the working position (10, 10f) facing and / or formed by a mounting side of at least one base section (30, 32 or 30f, 32f) of a device base (19, 19f) cover side (38, 38f) that several connection elements (23, 23f) in View on the cover side (38, 38f) lie next to one another and can be moved transversely to the cover side (38, 38f) relative to a device base (19, 19f) and that preferably all connection elements (23, 23f) on one side of a control element (3, 3f) and / or at least two connection elements (23, 23f) lie approximately in a common plane (39, 39f). Device according to one of the preceding claims, characterized in that essentially all connection elements (23, 23f) each have at least one elongated connecting conductor (46, 52 or 46f, 52f) in at least one connection element (49, 51, 53, 72 or 49f, 51f) for a device line and essentially all connecting conductors (46, 52 or 46f, 52f) lie within a device base (19, 19f), that in particular all connecting elements (49, 51, 53 or 49f, 51f) are in the Distance from an end face (31, 31f) on an outer connection side (50, 50f) of a device base (19, 19f) lying transversely to this is accessible for the connection of device lines and that preferably the respective connecting conductor (46, 52) with at least one associated connecting element (23) and / or an associated connecting member (49, 51, 53) is formed in one piece as a stamped part made of sheet metal or the like. Device according to one of the preceding claims, characterized in that at least one connecting element (23, 23f) engages substantially recessed in at least one base section (30, 32 or 30f, 32f) of a device base (19, 19f), in particular that the respective connecting conductor (46, 52 or 46f, 52f) including at least one base section of the associated connecting member (49, 51, 53 or 49f, 51f) in at least one closely matched, penetrating two base sections (30, 32 or 30f, 32f) Opening (47, 47f) and that preferably a connection element (23, 23f) with a connecting conductor (46, 52 or 46f, 52f) and a connection member (49, 51, 53 or 49f, 51f) in view forms a component that is angled at least once on a connecting plane (39, 39f). Device according to one of the preceding claims, characterized in that a device base (19, 19f) has at least one switch (24, 25 or 24f, 25f), such as a power snap switch for the heating device (4, 4f) and / or a signal Snap switch, carries that a connecting element (23, 23f) is connected via a connecting conductor (46, 46f) to a fixed contact component of a switch (24, 24f) and that preferably all connecting elements (23, 23f), connecting conductors (46, 52 or 46f, 52f) and connecting members (49, 51, 53 or 49f, 51f) on one side of an axial plane (40, 40f) lying transversely to a connecting plane (39, 39f), one essentially stationary on at least one base section (30 , 32 or 30f, 32f) mounted control member (3, 3f) are arranged, in particular all connecting conductors (46, 52 or 46f, 52f) essentially on one side of a switch plane transverse to the control member (3, 3f) of the next at one end (31, 31f) lying switch (24, 25f) are provided. Device according to one of the preceding claims, characterized in that at least one component fastened to at least one base section (30, 32 or 30f, 32f), in particular at least one connecting element (23, 23f), at least one connecting member (49, 51, 53, 55 or 49f, 51f, 55f), at least one base body of a switch (24, 25 or 24f, 25f), at least one holder (22, 22f) for a sensor (3, 3f) or the like this component and engaging in a receiving opening of at least one of the base sections (30, 32 or 30f, 32f) Has fastening attachment and that preferably at least one fastening attachment is designed as a deformation body or cabinet bracket (67, 67f) and / or as a claw connector. Device according to one of the preceding claims, characterized in that at least one connecting member (72) of a device base (19e) provided for connecting a device line is formed by at least one leg of a multiply angled connecting body (70) which is connected to one of the connecting members (72 ) separate fastening leg (69) is conductively fastened, and that preferably at least one flat tongue (49e, 51e, 53e) protrudes beyond the connection side (50e) of the device base (19e), on one flat side of which the likewise flat plate-shaped fastening leg, starting from an angle, protrudes (69) is attached flat. Device according to one of the preceding claims, characterized in that the device (1, 1f) forms a structural unit with a supporting body (5, 5f) of the heating device (4, 4f) and a device base (19, 19f) at a distance outside an outer peripheral surface of the supporting body (5, 5f) is located and, with at least one outer end face (31, 31f), delimits a mounting gap for at least one fastening element (56f) and that preferably a base body (8) made of pressure-resistant material is made in one piece with at least one fastening element designed as a tensioning element ( 56), such as a cabinet bracket, for at least one base section (30, 32). Device according to one of the preceding claims, characterized in that at least one connection element (23, 23f) is designed for direct, pontic-free connection to one end of a heating resistor (13, 13f) of the heating device (4, 4f), the respective one with the connection element (23, 23f) the connecting part (41, 41f) to be connected is preferably formed in one piece with the associated remaining heating resistor (13, 13f), in particular the connecting element (23, 23f) and / or the connecting part (41, 41f) being essentially one has flat connection surface. Device according to one of the preceding claims, characterized in that a housing cover (59) for at least one base section (30, 32) is secured in position with respect to this by engagement in the heating device (4), in particular that the cover (59) is at least partially leaf spring-like is thin and engages in at least one slot (62) of the heating device (4) and that preferably the cover (59) and / or at least one of the base sections (30, 32) by means of a snap connection (61) with and with respect to the supporting body (5 ) is securely connected.

Images