JPS5962023A - Cooking electric heating plate - Google Patents

Abstract

1. Electric hotplate with a hotplate body (12) and a lower cover (24), as well as an insulating piece (51) projecting from the cover for the passage or the electric hotplate connections (58, 81) through said cover, thermally stably insulated, flexible leads (58), which are sufficiently long for arranging the connecting piece (75) thereof outside the area of the electric hotplate (11) lead to a common, freely movably arranged connecting piece (75) and the ends (90) of the flexible leads (58) are constructed for insertion in a connection socket (91, 105), characterized in that the connecting piece (75) has retaining means keeping the ends (90) of flexible leads (58) aligned parallel to one another in the manner of connecting pins or lugs and that the ends (90) project through the connecting piece (75) and out of the latter on the connection side thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has an electric heating plate main body, a lower cover, and an insulating piece protruding from the cover for allowing a cooking electric heating plate connection part to pass through the cover. insulated flexible connecting conductors are passed through a freely movable common connecting piece, these connecting conductors being of sufficient length to allow the connecting pieces to be placed outside the range of the cooking plate. Regarding electric heating plates for cooking.

7)) for cooking, usually with very long and individual free ends
Providing insulated flexible connecting conductors for hot plates is
It is known from US Pat. No. 1,093,754 and British Pat. No. 9,046,72. These connecting conductors were defective, difficult to assemble and often had to be shortened. Moreover, these connecting conductors were partially short-circuited.

A cooking electric heating plate with flexible connecting conductors whose ends are connected by common connecting pieces with plug-in or screw-out terminals is known from European Patent Application No. 0 070 042. These conductors can be bent back over the center of the heating plate and the connecting pieces can be placed into recesses in the lower cover of the heating plate. Therefore, for transportation and storage, cooking plates with connecting pieces do not require more space than those without connecting pieces.

The object of the invention is to improve this heating plate, taking into account easier manufacturing and assembly possibilities as well as greater safety during connection.

The problem is that the connecting piece has a holding device that holds the flexible connecting conductors near the ends and holds them in such a way that they are arranged parallel to each other as connecting pins or connecting ears, The solution is that these fl, ; parts are configured to be introduced into the JM kA socket. It is therefore no longer necessary to provide special connecting ends or pins, but the ends themselves form connecting pins, and these connecting pins can be connected to the connecting sockets by screwing or preferably by a /%-inclusive connection. It is preferable to be able to connect. Nevertheless, all connections of the electric heating plate can be made by means of a handle or an industrial robot l- or 7+ operation.

Preferably, the connecting piece or the connecting conductor is designed or provided in such a way that the connection can be made only once, i.e. with correct alignment, so that the subsequent part can be configured to be rotated. is preferred.

In a preferred embodiment, the connecting piece has channels into which the ends of the flexible connecting conductors are introduced and are fixed in the channels by deformation. A configuration using a multi-core cable sleeve is particularly suitable for this purpose. Preferably, the electric heating plate can be provided with a through portion through which the connecting portion penetrates the electric heating plate cover. This penetration f
<15 minutes can be structured to consist of two parts, so that 1. At ljl, a slightly thickened connection point between the flexible connecting conductor and the inner solid connecting conductor continues into the recess, and thereby the inner solid connecting conductor, for example due to pressure on the connecting conductor from the inside, Prevent contact with the electric heating plate body from occurring.

If the connection socket is constructed as a connection block with plug connections for all heating plates of the heating device for cooking, a particularly simple and even automatic assembly is possible. This connecting block can then be connected via a flexible ring wire to another connecting block and there again with a plug connection,
And there it is also possible to provide an opening 'A n , an R cylinder, etc. In this case, the connecting tape consisting of flexible connecting wires running parallel to each other is first tilted towards the inside of the heating plate, so that the installation of the heating device for cooking can be inserted into the heating plate from above. can be done completely automatically. Then, by using the handle, introduce the connecting piece in the center of the electric heating plate into the connecting block attached to the bottom of the plate.

Further advantages and features of the invention will become apparent in particular from the following description with reference to the embodiment claims and the drawings.

Embodiments of the invention are shown in the drawings and explained in detail below.

1 and 2 show a cooking electric heating plate 11 having an SQ iron electric heating plate body 12 with a closed flat upper surface. The electric heating plate is equipped with spiral fins in the annular area to be heated, these fins forming spiral grooves between them, and ceramic No. 2''B20 in these dI.
A heating coil made of resistance wire is embedded inside. The connecting pin 80 is welded to the coil 19 and is made of ceramic!
:'Protrudes from I2o. 14 connecting conductors 81 as solid wires welded to the connecting pins 80 and insulated;
(Enter into the passage 57 in Section 1.

The inner cylindrical edge 21 facing downward is the electric heating plate main body 1
A flange-shaped edge area of a circular cover 24 of bracket-shaped metal plate extending around the circumference of the edge 21 is located at the lower edge of the edge 21. The edge area of the cover 24 has an upwardly, ie bifacially directed step which abuts the inside of the edge 21 and thereby centers the cover.

An insulating feed-through 51 passes through the shroud 24, the step of this feed-through having channels 57 supported and juxtaposed inside the shroud, into which connecting conductors 58 are threaded. protrude, and these connecting conductors are surrounded by an insulating section 82 having high heat resistance.

The penetration part 51 consists of two parts or halves, the insects being constructed to fit each other and between which the passage 11 is formed.
1557 is formed. Inner notch 1 inside each passage
01 is formed, and this notch forms an enlarged portion of the passage. As shown in FIG.
2 protrudes into the passage and thereby forms a complete insulation of the connecting line 58. Flexible connection 58 consisting of stranded wires
is connected to the solid connecting wire 81 by welding the end face.

The connection or welding point +00 has a larger diameter than the connecting line 58.81 and the channel 57. 5 penetration parts 2
By configuring the connection part 5 to consist of two parts,
8.8+ is positioned within the notch lot and these connections cannot move much axially, especially if these connections are pushed inwards or upwards.
This prevents the electric heating plate from coming into contact with the electric heating plate main body 12 and causing a short circuit. Instead of a welded connection 100, the connection can also be made by a caulked or brazed sleeve, in which case the sleeve can have an outwardly directed flange or section 111, which is exposed to the +ll1i line force. Fix the direction.

The two halves of the 1'-through portion 51 can be held in correct alignment with each other at the contact surfaces by projections and cutouts, not shown. These projections and notches are held by introduction into the openings of the cover 24 and are held in that position by projections or legs 103, which extend into each half of the penetration. It is integrally formed and supported under the electric heating plate main body 12. The basic shape of the penetration part is elongated and the penetration part is aligned in the circumferential direction of the heating plate. The penetration part projects through the cover in the area of the projection.

The flexible heating plate connecting conductors 58 are mechanically connected to each other by connecting pieces 75 made of ceramic fibers at ambient temperature. By providing the insulating piece in the radial direction approximately at the center of the annular heating area of the heating plate and by determining the size of the connecting conductor, the outer edge 97 of the connecting piece is separated from the outer edge of the heating plate at a distance that is preferably smaller than the maximum heating plate radius. The positioning and mounting can be adapted to the requirements, in which the juxtaposed Jff connecting conductors act like flexible tapes, which facilitate easy swinging of the connecting pieces in the vertical direction. flexibility and greater mobility, but more severely restricts torsion and lateral movement.

In the cover, a recess 61 faces the penetrating portion 51 and is located at an appropriate distance l'l',' in the radial direction from the center of the heating plate.
If the electric heating plates can be stacked with their backs facing each other and shifted by 180 degrees, the recess 61 can be stacked with their backs facing each other and shifted by 180 degrees, without bending the connecting J-shaped wire 58 too sharply.
The size is selected so that the protruding portion of the penetrating portion 51 can be accommodated. The width of the recess 61 is significantly greater than the width of the penetration, so that the connecting conductor 58 can be folded inward and the connecting piece 75 can be located on the side of the insulation piece located in the recess 61. However, the connecting piece 75 can also be folded outwards and supported more or less in the plane of the heating plate.

Each free end of each town connection conductor 58 is connected to the passage 8 of the connection piece 75.
3 has been introduced. The passages 83 are arranged side by side and consist of holes extending through a connecting piece 75, which is made of an electrically insulating piece and is in the form of a strip at right angles to the conductor 58. and mechanically connect them to each other near the ends, so that the connecting conductors 58 form a band or strip. Each of the holes has a circular cross section and a large 1α diameter section 84 with a shoulder 86 between them.
and a small diameter portion 85. Two lateral force notches 87 are provided in the front face 97 of the connecting piece 75 at the opening of each hole portion 85 .

Each free end 90 of the connecting conductor is provided with a multi-core cable sleeve 88, which consists of a metal plate sleeve, which surrounds the end of the continuous wire. The insulation is covered at the ends by two metal strips 98. The multi-core cable sleeve 88 is manufactured from a sheet metal strip that is first bent into a U-shaped cross section. After introducing the core wire into the U-shaped cross-section, the sheet metal strip is bent into a circular shape (FIG. 4). A strip 98, which is likewise circularly deformed, is pressed tightly around the insulation, which can be placed over as a loose insulation sleeve.

When the multi-core cable sleeve 88 is now introduced into the passageway 83, the insulating end 89 abuts the local area 86 and positions the multi-core cable sleeve longitudinally. The sleeve conducts the narrower part 85 of the passage, but the longer sound 1ζ projects from the surface 97. After winding, the final shaping of the multi-core cable sleeve 88 is carried out at the portion projecting from the front turn 97. To this end, the sleeve is pressed into the kidney shape shown in FIG. 5, but this kidney shape is wider and lower in height than the previously described circle (FIG. 4). FIG. 5 shows that the lateral portions of the sleeve 88 are pressed into the notches 87 and these notches secure the multi-core cable sleeve against pulling out of the passageway and against twisting. It shows. The multi-core cable sleeve 90 thereby forms connection pins which can be introduced into the respective connection part and fixed there by means of screws, bayonet connection springs or the like.

FIG. 2 shows a connecting socket 1-91J consisting of an insulating socket, which has internal chambers which are accessible from the outside through an opening on both sides. A metal cage 92 is housed in each of these chambers, and these metal cages 1, 4 accommodate elements with a C-shaped double spring clamp, and this spring clamp is free of one side of the element. ff1r
ri 94 is sharply truncated and the other end 95 is bent inward.

If the multi-conductor cable sleeve 88 is introduced from one side and the lead-in wire 96 is introduced from the other side, they are both tightened and electrically conductive so that there is no spring tightening on the bottom of the cage 92. The element is pressed against the element, and this spring tightening prevents the element from being pulled out at the sharp end 94.

The spring-tightening element, at its bent end 95, fits into a groove 98 provided obliquely or at right angles, which groove is pressed into the sleeve 88, so that a sufficiently strong connection is achieved. I'm worn out.

If the wire is to be pulled out of the connection socket from both sides, the multi-core cable sleeve 88 is first pulled out. Therefore, it is impossible for the uninsulated free end of the lead-in wire 96, which is connected to the household power supply circuit and is currently energized, to be exposed.

In the present invention, the free end of the flexible connecting conductor is converted into a double plug, which can be easily connected by means of a connecting socket or an individual spring or snap connection. The plugs or pins are held in the desired orientation exactly parallel to each other and to the planar surface of the sleeve.

A protrusion 99 protruding from the outer surface 97 of the connection J465 and cooperating with a notch in the connection plug can be provided to prevent twisting of the connection and incorrect interconnection of the conductors. This can also be done by various non-fl' 78 formations or alignments of the multi-core cable sleeve 88 or the connecting piece 75. The invention makes it possible to use automatic equipment, for example an industrial rotor, to assemble the electric heating plate, including the electrical connections, into the cooking 71'L heating apparatus (4). As a means of preventing this, the connector piece can be provided with protrusions or notches, which can be captured or carried by the grip of the industrial robot.

It is also possible to use a multicore cable sleeve in which the part forming the connecting pin consists of a metal plate ear clip rather than a wire surrounded by the sleeve.

Figure 6 shows the electric heating equipment fKf for cooking.
For example, the electric heating plate 11 as described above is attached to 4 (the plate +04 is used to attach an ILI microwave oven or a cooking tray).

The connecting pieces 75 are inserted into the connecting block 105, which has the basic shape of a cross with four ends. , with reference to FIG. 2, the tightening elements can have elements, but these tightening elements are provided only to introduce the connection 58 from the heating plate. , the domestic appliance lf<the lead-in line 96 to the circuit or the regulator of the heating board - is included in the flexible multi-core cable 106, which protrudes from the central force of the connection block 105. Four connection plugs 107 are provided at the ends of +06, and these connection plugs are connected to a plug connection 7S in a common connector block 109.
1! +08, this connector block is attached to one side of the cooking electric heating device and can also have a regulator of the cooking electric heating device.

Since the connection block 105 is attached to the center of the four electric heating plates 11 on the removal plate 104, each of which has only a short distance from the cooking electric heating plate, the connection block 105 can be connected by a relatively short connecting conductor 58. Connections to block 105 can be made.

The features described in connection with FIG. 6 allow automatic assembly of the heating device for cooking. That is, the connection block 105 and the connector block 109 are attached to a plate and connected to each other by a prefabricated cable 106.

Is it for cooking now? Remove the hot plate 11 from above plate 10
4 can be automatically introduced into the opening. Due to the inwardly bent flexible wire 58 of the cooking plate, this can be done without tilting or moving it to the side. Thereafter, the connection is completed by inserting the connecting piece 75 into the terminal block +05. It is particularly advantageous that an insulating cover on the bottom side of the heating device for cooking can be dispensed with in some cases, since there are no uninsulated parts on the bottom side.

[Brief explanation of the drawing]

Figure 1 is a bottom view of the cooking electric heating plate and its connection parts, Figure 2
The figure is a partial sectional view of the electric heating plate and its connection part, FIG. 3 is a sectional view taken along the line III-III in FIG. 2, and FIGS. 4 and 5 are the IV-IV line and v-v in FIG. 3. FIG. 6 is a partial sectional view taken along a line, and a bottom view with some parts omitted of the electric heating device for cooking having four electric heating plates. 11... Electric heating plate for cooking, 12... Electric heating plate main body, 24
... Cover, 51 ... Insulating piece, 5818 + ... Connection wire, 75 ... Connection piece, 90 ... +16 parts, 91,1
05...Connection socket 1- Patent bleeder Carl Huitsiel 6th Attorney Patent attorney Osamu Nakahira 1.4.
-I06

Claims (1)

[Claims] 1. An electric heating plate main body (12), a lower cover (24), and a cooking electric heating plate connection portion (58° 81°) protruding from the cover.
) has an insulating piece (51) for penetrating this cover, and a thermally insulated flexible connecting conductor (58)
．． 11g and 1J, and these connecting conductors are long enough to provide the connecting piece (75) in 4 outside the range of the cooking electric heating plate (11). In the cooking electric heating plate, a connecting piece (75) mechanically connects the flexible connecting Noah gamma rays (58) to each other near the end and connects these! ffi′11:Δ3(9(1)
having a holding device for holding the sutures so that they are arranged parallel to each other as one piece on a pin or J'Bt Era;
And these ends (90) connect to the connection sockets h (91, 10
5) An electric heating plate for cooking, characterized in that it is configured to be introduced into. 2 The holding device or ffd part is in contact at only one place C]
- The electric heating plate for cooking according to claim 1, characterized in that it is constructed or arranged so that it can be introduced into the socket 1 (91, 105). 3. The connection piece (75) has passages (83), into which the ends (9o) of the flexible connecting conductor (58) are introduced and fixed by deformation of the end (90), and the connection The passage in the piece (75) is preferably an opening (83);
Claim 1 or Claim 1, characterized in that these openings have an inner shoulder (86) near the end of the flexible connecting conductor (58), which engages a corresponding shoulder. @2
Adjust as described in Section 1! Electric heating board. 4. The flexible connecting conductor (58) consists of stranded wires, the ends (9o) of these strands being surrounded by a multi-core cable sleeve (88), preferably a multi-core cable sleeve (88).
88) is brought into its final shape after being introduced into the channel (83) and in particular the connecting piece (75) is provided with the cutout (87).
and insert the multi-core cable sleeve (
88) is fitted as a result of the formation of the multi-core cable sleeve. 5 ff1i, +, the connection socket (91) cooperating with the part (90) supplements and holds the end part (90) and possibly the lead-in wire from the electrical circuit; the spring clamping is the element (
93), and press the spring 86 (X
One of claims 1 to 4, characterized in that the J element acts as a pull-out stop, but does not act as a pull-out stop for the flexible connecting conductor (58). Electric heating plate for cooking described in . 6. The insulation through-hole (51) is inserted into the opening in the cover (24), this through-through has passages (57), through which the heating plate connection parts (58, 81) pass, and the through-hole The portion (51) at least connects the connecting conductor (5) in the passageway.
8,180), and has an element of a positioning device (+01) that determines the axial direction of the
Electric cooking heat according to one of claims 1 to 5, characterized in that it is manufactured from two matching parts, which parts form a passage (57) between them. Board. 7. The positioning device has a connecting part (100) between the flexible connecting conductor and the connector conductor (81) of the heating plate, which connecting part protrudes laterally onto the connecting conductor or the connector conductor and has a penetrating part (+05 7. The electric heating plate for cooking according to claim 6, wherein the heating plate is disposed within the notch (+01) of the heating plate. 8. The device according to claim 6 or 7, characterized in that the insulating portion (82) of the flexible connecting conductor (58) enters the passageway (57) of the penetrating portion (51). Electric heating board for cooking. 9. The connection socket (+05) consists of a connection block,
Claim 1, characterized in that this connecting block is arranged on the electric cooking device (+04) and has plug connections for the connecting pieces (75) of the electric cooking plates (11). Key P1 as described in one of Sections to Sections 8! Electric heating board. 10 Connection block (+05) connects flexible conductor (106
) is connected to a connector block (109), which connector block is arranged preferably fixedly on one side of the electric heating device for cooking. electric heating plate for cooking.