Domestic appliance device

Abstract

The invention relates to a domestic appliance device, in particular a hob device, comprising at least one circuit board (14) and comprising at least one interface (20) which is connected to the circuit board (14) and which is provided for being connected to a pole shoe (31) of an electrical line (30), wherein the interface (20) has a plug connection element (23) for plug connection to the pole shoe (31) and screw connection unit (24) for the purpose of establishing a screw-clamp connection to the pole shoe (31).

Description

[0001] Household appliance device

[0002] The invention relates to a household appliance device according to claim 1, a pole shoe according to claim 7 and a method for mounting the pole shoe on the household appliance device according to claim 9.

[0003] Various interfaces for connecting an electrical cable to a circuit board are already known from the prior art. In particular, there are pole shoes with a hole or eyelet that are designed solely for a screw-clamp connection. Furthermore, there are pole shoes that are designed solely for a plug-in connection.

[0004] The object of the invention is, in particular but not limited to, to provide a generic device with improved properties with regard to assembly and / or contacting. This object is achieved according to the invention by the features of claim 1, while advantageous embodiments and further developments of the invention can be found in the subclaims.

[0005] The invention relates to a household appliance device, in particular a hob device, preferably an induction hob device, with at least one printed circuit board and with at least one interface which is connected to the printed circuit board and which is intended to be connected to a pole shoe of an electrical line, wherein the interface has a plug connection element for plug connection to the pole shoe and a screw connection unit for establishing a screw-clamp connection with the pole shoe.

[0006] Such a design can, in particular, facilitate assembly. For example, the plug-in connection can enable simple and secure, particularly manual, placement of the pole shoe at the interface, especially on a conveyor belt, before the pole shoe is secured, for example, mechanically, particularly by means of an automatic device, or alternatively manually, using the screw-clamp connection. For example, assembly can be performed one-handed.

[0007] Furthermore, the household appliance device can be subjected to a functional test, particularly an automated one, before the screw-clamp connection is established. In particular, high current-carrying capacities of more than 40 A can be achieved. For example, low assembly forces, particularly less than 20 N, can be achieved.

[0008] A “household appliance,” in particular a “cooking appliance,” advantageously a “hob device,” and particularly advantageously an “induction hob device” is to be understood as meaning at least one part, in particular a subassembly, of a household appliance, in particular a cooking appliance, advantageously a hob, and particularly advantageously an induction hob. For example, a household appliance comprising the household appliance could be a freezer, advantageously a refrigerator and / or a freezer. Alternatively or additionally, a household appliance comprising the household appliance could be, for example, a dishwasher and / or a washing machine and / or a dryer. Advantageously, a household appliance comprising the household appliance is a cooking appliance.A household appliance designed as a cooking appliance could, for example, be an oven and / or a microwave and / or a grill and / or a steamer. A household appliance designed as a cooking appliance is advantageously a hob, preferably an induction hob.

[0009] A "cooktop device," in particular an "induction cooktop device," is understood to mean at least one part, in particular a subassembly, of a cooktop, in particular an induction cooktop. Accessory units for the cooktop may also be included, such as a sensor unit for externally measuring the temperature of a cooking utensil and / or a food item. In particular, the cooktop device, in particular the induction cooktop device, may also comprise the entire cooktop, in particular the entire induction cooktop.

[0010] Furthermore, power electronics, in particular current and voltage converters, and / or control electronics, in particular relays, semiconductor switches and / or an electrical control unit, such as in particular an ASIC or a processor, can be arranged on the circuit board, and the circuit board can have conductor tracks that connect these electronic components to one another. The interface can be provided to provide a heating current for a heating element, in particular an induction heating element, of the household appliance. In particular, the electrical line is connected to a heating element, in particular an induction heating element. Alternatively, the interface can be provided to be connected to a mains power supply line. The interface is preferably mechanically and electrically connected to the circuit board.

[0011] The interface has, in particular, a base component which is intended to be firmly connected to the circuit board and a fixing component which is intended to be detachably connected to the base component. The base component and the fixing component together form, for example, the screw connection unit. The screw connection unit has, in particular, at least one external thread element and at least one internal thread element. The external thread element is advantageously designed as a screw and is preferably formed by the fixing component. The internal thread element is advantageously designed as a hole provided with an internal thread, in particular in the base component. Alternatively, it is conceivable for the external thread element to be designed as a threaded pin which is formed integrally with the base component and for the internal thread element to be designed as a nut, which preferably forms the fixing component.According to a further embodiment, the fixing component can be designed as a self-tapping screw intended to be screwed into the base component, in particular into a hole in the base component. In particular, the screw connection unit further comprises a washer or similar.

[0012] The screw connection unit is specifically designed to clamp the pole piece between the base element and the fixing element. For example, the external thread element is designed to be guided through an eyelet or hole in the pole piece.

[0013] A “pole shoe” should be understood in particular as an element that is intended to be mechanically and electrically connected to a core of the electrical cable and in particular to an insulation of the electrical cable. The pole shoe is intended to facilitate and / or enable a connection, in particular a reversibly detachable connection, of the electrical cable to the interface, preferably using exclusively mechanical means. “Intended” should be understood in particular as specially designed and / or equipped. The fact that an object is intended for a specific function should be understood in particular as meaning that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0014] It is further proposed that at least the plug-in connection element and at least the screw connection unit be made of metal or a metal alloy. For example, the entire interface is made of metal or a metal alloy. This makes it possible, in particular, to achieve a space-saving design, low costs, and / or a good electrical and / or mechanical connection.

[0015] The interface is preferably soldered to the circuit board. This allows for a particularly reliable mechanical and electrical connection. In particular, the interface, in particular the base component of the interface, has one or more pins designed to be connected to solder pads, particularly in holes, in the circuit board.

[0016] The plug-in connection element is advantageously oriented such that a plug-in direction for establishing the plug-in connection is at least substantially parallel to a screw axis of the screw connection unit. In particular, the plug-in direction and the screw axis form an angle of a maximum of 40°, in particular a maximum of 20°, advantageously a maximum of 10°. This can enable simple assembly.

[0017] According to a preferred embodiment, the connector element is plate-shaped. For example, the base component forms a flat surface that is perpendicular to the screw axis. In particular, the connector element is designed to rest against the flat surface and is angled relative to it. In particular, the connector element extends away from the circuit board.

[0018] According to an alternative embodiment, the plug-in connection element can be designed as a terminal that surrounds a receptacle, wherein the receptacle extends, in particular, from the flat surface to the circuit board. Furthermore, the interface, in particular at least the base component, can be designed at least partially as a stamped and bent part. This allows for particularly simple manufacturing.

[0019] Furthermore, a pole shoe for an electrical cable, in particular for connecting to an interface of a previously described household appliance, is proposed. The pole shoe has a plug element for establishing a plug connection, in particular the plug connection, and a clamping region intended to be clamped in a screw-clamp connection, in particular the screw-clamp connection. The pole shoe advantageously has one or more crimp connection elements, each of which is intended to establish a mechanical and electrical connection with a wire of the electrical cable or a mechanical connection with insulation surrounding the wire.

[0020] Such a design can, in particular, facilitate assembly. For example, the plug-in connection can enable simple and secure, particularly manual, placement of the pole shoe at the interface, especially on a conveyor belt, before the pole shoe is secured, for example, mechanically, particularly by means of an automatic machine, using the screw-clamp connection.

[0021] The clamping area preferably has a hole or an eye which is intended to at least partially surround an external thread element of the interface.

[0022] The plug-in element is designed, in particular, as a clamp that surrounds a receptacle. The receptacle can be provided to accommodate a plug-in connection element of the interface. The clamp can have spring elements designed to exert a force on an element inserted into the receptacle and to fix it in place with a positive and non-positive fit. The receptacle, in particular a plug-in direction for establishing the plug connection, can extend, in particular, perpendicular to the clamping area.

[0023] Furthermore, the pole shoe can have at least one wing, which is formed separately from the plug-in element and arranged at an angle on the clamping area, in particular for encompassing the interface. This makes it possible, in particular, to easily align the pole shoe. In particular, it can be achieved that a hole or eyelet in the pole shoe and a hole forming an internal thread in a base component of the interface lie one above the other. Furthermore, a method for connecting a previously described pole shoe and a previously described household appliance device is proposed.

[0024] For example, the pole piece is manually plugged onto the interface. Furthermore, after the plug connection has been established, the pole piece can be mechanically secured to the interface using the screw-clamp connection.

[0025] This makes it possible to achieve, in particular, simple production and / or a secure connection.

[0026] The household appliance, the pole piece, and the method are not intended to be limited to the application and embodiment described above. In particular, the household appliance, the pole piece, and the method may have a number of individual elements, components, and units that differs from the number stated herein to fulfill a functionality described herein.

[0027] Further advantages will become apparent from the following description of the drawings. The drawings illustrate exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0028] They show, each in schematic representation:

[0029] Fig. 1 a household appliance according to the invention,

[0030] Fig. 2 shows a household appliance device according to the invention with an interface according to the invention,

[0031] Fig. 3 a basic component of the interface according to the invention,

[0032] Fig. 4 a pole piece according to the invention,

[0033] Fig. 5 shows a first method step in mounting the pole shoe on the household appliance and

[0034] Fig. 6 shows a second method step in the assembly of the pole shoe on the household appliance. Figure 1 shows a household appliance 10. The household appliance 10 is designed as a hob. The household appliance 10 is designed as an induction hob. The household appliance 10 has a household appliance device 12.

[0035] Figure 2 shows the household appliance device 12. The household appliance device 12 is designed as an induction hob device.

[0036] The household appliance device 12 has a printed circuit board 14. The household appliance device 12 further has an interface 20 connected to the printed circuit board 14. The interface 20 is intended to be connected to a pole shoe 31 of an electrical line 30.

[0037] The interface 20 has a base component 22 (see Fig. 3) and a fixing component 25.

[0038] The interface 20, in particular the base component 22, has a plug-in connection element 23 for plugging into the pole piece 31 and a screw connection unit 24 for establishing a screw-clamp connection with the pole piece 31.

[0039] The plug connection element 23 and the screw connection unit 24 are formed from metal or a metal alloy.

[0040] The interface 20, in particular the base component 22, is soldered to the circuit board 14. The base component 22 has a U-shaped profile. Pins—in this case, six—are formed on the legs of the U-shaped profile, which are intended to form solder contacts with the circuit board 14. The number of pins can be adapted to the expected current flow depending on the application. The legs of the U-shaped profile are directed toward the circuit board. A base of the U-shaped profile forms a flat surface 28 for supporting the pole piece 31.

[0041] The plug-in connection element 23 is oriented such that a plug-in direction for establishing the plug-in connection is parallel to a screw axis of the screw connection unit 24. The plug-in direction is aligned perpendicular to the circuit board 14. The plug-in connection element 23 is plate-shaped. The base component 22 of the interface 20 is designed as a stamped and bent part. The base component 22 is formed from a stamped and bent piece of sheet metal, in particular a sheet metal with a thickness of 0.8 mm, alternatively e.g. between 0.3 mm and 1.5 mm. The plug-in connection element 23 is arranged at an angle to the flat surface 28. The plug-in connection element 23 is oriented perpendicular to the flat surface 28. The plug-in connection element 23 has a width of 6 mm, alternatively e.g. between 3 mm and 10 mm, and protrudes 9.2 mm, alternatively e.g. between 3 mm and 15 mm, beyond the flat surface 28.The flat surface 28 has, for example, a length of 13 mm, alternatively, for example, between 5 mm and 20 mm. The flat surface 28 can have a width of 6 mm, alternatively, for example, between 3 mm and 10 mm.

[0042] The base component 22 protrudes, in particular, 15.5 mm, alternatively between 5 mm and 25 mm, from the circuit board 14. The connector element 23 protrudes away from the circuit board 14.

[0043] The screw connection unit 24 has an internal thread element 26. The internal thread element 26 is formed in the base component 22. The internal thread element 26 is designed as a threaded hole in the flat surface 28. The screw connection unit 24 has an external thread element. The external thread element is designed as a screw. The external thread element forms the fixing component 25. The screw has a toothed screw head to achieve a good electrical and mechanical connection to the pole piece 31.

[0044] Figure 4 shows the pole piece 31. The pole piece 31 is provided for terminating the electrical line 30. The pole piece 31 has a crimp terminal 33, which is intended to receive a wire 32 of the electrical line 30 and to secure it by means of a crimp connection. Alternatively or in addition to a crimp connection, the pole piece can also be connected to the wire, for example by means of a solder connection. The pole piece 31 has a further crimp terminal 35, which is intended to receive an insulation 34 of the electrical line 30 and to secure it by means of a crimp connection. The pole piece 31 is provided for connection to the interface 20. The pole piece 31 has a plug element 36 for establishing a plug connection with the plug connection element 23 of the interface 20.The pole piece 31 further comprises a clamping region 38 which is intended to be clamped in the screw clamp connection of the interface 20 by means of the screw connection unit 24.

[0045] The pole piece 31 further comprises wings 39, which are formed separately from the plug-in element 36 and arranged at an angle to the clamping area 38. The wings 39 are intended to engage around the flat surface 28. The wings 39 and the plug-in element 36 are angled in opposite directions to the clamping area 38.

[0046] The plug element 36 is designed as a clamp and has a receptacle for the plug connection element 23 of the interface 20.

[0047] The pole shoe 31 is designed as a stamped and bent part. The pole shoe 31 is formed from a stamped and bent piece of sheet metal, in particular a sheet metal with a thickness of 0.8 mm, alternatively, for example, between 0.3 mm and 1.5 mm. The pole shoe 31 has, for example, a length of 27.1 mm, alternatively, between 10 mm and 40 mm. The pole shoe 31 can have a width of 10 mm, alternatively, for example, between 5 mm and 20 mm. The pole shoe 31 has, in particular, a height of 12 mm, alternatively, for example, between 6 mm and 20 mm.

[0048] To connect the pole piece 31 to the interface 20, in a first step (see Figure 5) the pole piece 31 is manually plugged onto the interface 20. The plug-in connection element 23 of the interface 20 is inserted into the receptacle of the plug-in element 36 of the pole piece 31. The wings 39 engage around the flat surface 28 of the base component 22 and assist in aligning the pole piece 31 and in aligning a hole 37 in the clamping area 38 of the pole piece 31 on the internal thread element 26 of the base component 22. The pole piece 31 is then mechanically fixed to the interface 20, preferably by an automatic machine, using the screw-clamp connection (see Figure 6). The fixing component 25, designed as a screw, is guided through the hole 37 in the pole piece 31 and screwed to the internal thread element 26.

[0049] In addition to the interface 20, the household appliance device 12 may have further similar interfaces that are connected to the circuit board 14 and are intended to be connected to pole shoes of further electrical lines. Reference numerals

[0050] 10 household appliances

[0051] 12 household appliance device

[0052] 14 circuit board

[0053] 20 Interface

[0054] 22 Basic components

[0055] 23 Plug-in connection element

[0056] 24 screw connection unit

[0057] 25 Fixing component

[0058] 26 Internal thread element

[0059] 28 Surface

[0060] 30 Line

[0061] 31 Pole piece

[0062] 32 cores

[0063] 33 Crimp terminal

[0064] 34 Insulation

[0065] 35 crimp terminal

[0066] 36 plug-in element

[0067] 37 holes

[0068] 38 clamping range

[0069] 39 wings

Claims

Claims Household appliance device, in particular a hob device, with at least one printed circuit board (14) and with at least one interface (20) which is connected to the printed circuit board (14) and which is intended to be connected to a pole shoe (31) of an electrical line (30), wherein the interface (20) has a plug-in connection element (23) for plugging into the pole shoe (31) and a screw connection unit (24) for establishing a screw-clamp connection with the pole shoe (31). Household appliance device according to claim 1, characterized in that at least the plug-in connection element (23) and at least the screw connection unit (24) are formed from metal. Household appliance device according to claim 1 or 2, characterized in that the interface (20) is soldered to the printed circuit board (14).Household appliance according to one of the preceding claims, characterized in that the plug-in connection element (23) is oriented such that a plug-in direction for establishing the plug-in connection is at least substantially parallel to a screw axis of the screw connection unit (24). Household appliance according to one of the preceding claims, characterized in that the plug-in connection element (23) is plate-shaped. Household appliance according to one of the preceding claims, characterized in that the interface (20) is at least partially formed as a stamped and bent part.

7. Pole shoe for an electrical line (30), in particular for connection to an interface (20) of a household appliance (12) according to one of the preceding claims, with a plug element (36) for producing a plug connection, in particular the plug connection, and with a clamping area (38) which is intended to be clamped in a screw-clamp connection, in particular the screw-clamp connection.

8. Pole shoe according to claim 7, characterized by at least one wing (39) which is formed separately from the plug-in element (36) and arranged at an angle on the clamping area (38), in particular for encompassing the interface (20).

9. A method for connecting a pole piece (31) according to one of claims 7 to 8 to a household appliance device (12) according to one of claims 1 to 6.

10. The method according to claim 9, wherein the pole piece (31) is manually plugged onto the interface (20).

11. The method according to claim 10, wherein the pole shoe (31) is mechanically fixed to the interface (20) by means of the screw-clamp connection after the plug connection has been established.

12. Household appliance, in particular a hob, with a household appliance device (12) according to one of claims 1 to 6.

13. Interface for a household appliance device (12) according to one of claims 1 to 6.

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