JP4687524B2 - Hot plate - Google Patents

Description

  The hot plate comprises a case main body that forms an outer shell and has legs at the bottom, a substantially dish-shaped heat shield plate that is housed inside the case main body and blocks heat from the heater from being transmitted to the case main body, A heater disposed inside the heat shield plate, a plate for cooking the food set above the heater, and a receiving cover attached to the heater and removably supporting the temperature controller; The heater is energized by attaching a temperature controller to the receiving cover, and cooks cooked food such as meat on the plate.

  Incidentally, conventionally, a heater-fixed hot plate is known. In this hot plate, a heater, a heat shield and a case main body are integrated, and a receiving cover into which the temperature controller is inserted is attached to the case main body. However, this type has a problem that it is not easy to remove, clean, and replace each part. In addition, even if each part is removable, the receiving cover to which the temperature controller is inserted is attached to the case body, so that when the heat shield is removed, the heater terminal is exposed to the outside, and the heater terminal There was a problem that was no longer protected.

  In order to solve such a problem, there has already been proposed a structure in which a heater and a receiving cover are integrated into a single heater unit so that each component can be removed. The example is shown in FIG. Briefly, the hot plate 1 includes a case main body 2 constituting an outer shell, a heat shield plate 3 for blocking heat from the heater 4 from being transmitted to the case main body 2, and an inner side of the heat shield plate 3. A heater 4 disposed on the heater 4, a temperature controller 5 attached to the heater 4 and having a thermal bar 5a, a receiving cover 6 that supports the temperature controller 5 in a detachable manner, and a cooked food set above the heater 4 The heater 4 and the receiving cover 6 are integrated into a heater unit 8. An opening / closing member 9 that can move up and down is provided on the receiving cover 6. When the receiving cover 6 is placed on the case body 2 and the plate 7 is placed on the case body 2, the opening / closing member 9 of the receiving cover 6 is moved. It is opened so that the heat sensitive rod 5a of the temperature controller 5 can be received and inserted into the cover 6. And, for example, it is conceivable that a small child inserts the temperature controller 5 in an energized state into the receiving cover 6 attached to the heater 4 by mischief, but by providing a new safety device called the opening / closing member 9, Such problems are prevented from occurring.

However, although this has the advantage that the heater terminal is not exposed to the outside, a new safety device called the opening / closing member 9 is required, and the cost increases accordingly (for example, see Patent Document 1). .
JP2002-209755

  The present invention makes the heat shield plate detachable from the case body and attaches the receiving cover to the outer surface of the heat shield plate via the attachment plate, so that the heater terminal is removed when the heat shield plate is removed from the case body. It is an object of the present invention to provide a hot plate receiving cover mounting structure that is not exposed to the outside and that does not require a new safety device.

  In order to achieve the above object, the present invention adopts the following configuration.

In the invention according to claim 1, the case main body, the heat shield plate accommodated in the case main body, the heating source arranged in the heat shield plate, and the plate placed above the heat source A hot plate having a temperature controller, a receiving cover for supporting the temperature controller, and a mounting plate for mounting the receiving cover, wherein the heat shield plate has a locking groove, and the mounting The plate has a locking piece, and the mounting of the heat shield plate and the mounting plate is partly fixed, and the other is locking by the locking piece and the locking groove , A configuration in which a receiving cover is attached to an outer surface via the mounting plate, and the heat shield plate, the heating source, and the receiving cover are integrally attached to and detached from the case body. By attaching the receiving cover via the mounting plate, the mounting strength of the receiving cover is increased, and even if the heat shield plate is removed from the case body, the heater terminal is not exposed to the outside. Furthermore, since the heater itself can be attached to the heat shield, no new safety device is required.

In the invention according to claim 1, the heat shield plate and the mounting plate are attached to each other by a part of the fixing and the locking piece and the locking groove, and the outer surface of the heat shield plate is received via the mounting plate. By attaching the cover and making the heat shield plate, heating source, and receiving cover integrated into the case body, the mounting strength of the receiving cover can be increased, so that the reliability of the receiving cover is increased accordingly. Can do. In addition, even if the heat shield is removed from the case body, the heater terminals are not exposed to the outside, eliminating the risk of the removed terminals hitting an object and deforming, eliminating the need to reattach the removed heater to the cover. You can also. Furthermore, by attaching the heater itself to the heat shield plate, a new safety device can be made unnecessary, and an increase in production cost can be suppressed. Furthermore, by handling the receiving cover and the mounting plate as one unit, it can be shared with other hot plates. Furthermore, the impact force F can be absorbed.

In addition , by forming a gap between the outer surface of the heat shield plate and the mounting plate, high heat of the heat shield plate is directly transmitted to the receiving cover, and it is possible to prevent the adverse effect of the receiving cover being thermally deteriorated. Further, the temperature of the resin of the receiving cover can be suppressed within the heat resistant temperature.

Also, the side ribs surrounding the air gap on the side of the mounting plate is provided, by inhibiting the movement of air between the air gap and the outside, reducing the flow of air from the side portion, suppressing a temperature drop in the gap Therefore, it is possible to prevent a decrease in accuracy of temperature detection with the heat sensitive rod, and it is possible to stabilize the plate temperature.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows an overall perspective view of the hot plate of the present invention, FIG. 2 shows a perspective view of the heat shield plate with the heater attached, viewed from above, and FIG. 3 shows the heat shield plate with a receiving cover and a mounting plate attached. FIG. 4 is a perspective view showing the state viewed from below, FIG. 4 is a perspective view showing a state where the receiving cover and the mounting plate are attached to the heat shield plate, and FIG. 5 is a cross-sectional view showing the state where the mounting plate is attached to the heat shield plate 6 and 7 are perspective views of the mounting plate, and FIGS. 8 and 9 are perspective views of the receiving cover.

  As shown in FIG. 1, the hot plate H is disposed inside the case body 10 constituting the outer shell, the heat shield plate 20, the plate 30 placed above the heat shield plate 20, and the heat shield plate 20. A heater 32 as a heating source to be heated, a temperature regulator 35 for controlling energization to the heater 32, a receiving cover 40 attached to the heater 32, and a mounting plate for attaching the receiving cover 40 to the heat shield plate 20. 50 mag.

  The case main body 10 is a resin molded product, constitutes the outline of the hot plate H, has a rectangular shape in plan view, and is generally dish-shaped, and a plurality of legs 11 are fixed to the bottom thereof. The left and right wall surfaces on the short side of the case body 10 are provided with recessed fitting portions 12 and 12 for facilitating gripping of the handles 30a of the plate 30. Although not shown, air flows on the bottom surface. A large opening is provided for promotion and the like. Further, a cutout hole 14 for fitting a receiving cover 40 described later is provided on the side surface of the corner portion. The shape of the cutout hole 14 is a rectangular shape that is slightly larger than the outer shape of the receiving cover 40, and after the heat shield 20 is attached to the case body 10, approximately half of the receiving cover 40 is cutout as shown in FIG. 1. It protrudes outward from the hole 14.

  The heat shield plate 20 is formed integrally by pressing a metallic thin plate, is rectangular in plan view, and is substantially dish-shaped as a whole, with four legs 21 attached to the bottom thereof. It is placed in the case body 10. In the center, a plurality of heater mounting pieces 22 are mounted by screws 22a. As shown in FIG. 2, the heaters 32 are held by sandwiching the heaters 32 in a U-shaped groove formed at the tip thereof. Support integrally.

  Further, a central hole 23 into which the heat sensitive rod 36 of the temperature controller 35 is inserted is provided at the center of the side surface 27 of the corner portion 27 of the heat shield plate 20. Side holes 24, 24 having the same diameter and into which the heater terminal 32a is inserted are formed. Further, on both sides of the side holes 24, a substantially tongue-shaped locking groove 25 into which a locking piece 55 of a mounting plate 50 described later is engaged is formed. The two locking grooves 25 are holes of the same shape facing in the same direction. As shown in FIG. 2, the vertical groove 25a having a height D1 and a height d1 extending horizontally from the approximate center of the vertical groove 25a. It consists of a vertical short groove 25b.

  Furthermore, two screw holes 26 and 26 for mounting the mounting plate 50 are provided on the bottom surface of the heat shield plate 20 near the side surface of the corner portion 27. The locking groove 25 is shown in FIG. 2, and an enlarged view of a circled portion is shown on the right side as shown by an arrow.

  The plate 30 is a thick aluminum die-cast member, has a rectangular shape in plan view similar to that of the case body 10 and is generally dish-shaped. Handles 30a and 30a are provided on both side surfaces on the short side. . When the plate 30 is placed on the case main body 10, the handles 30 a and 30 a are positioned on the recessed fitting portions 12 and 12 of the case main body 10, and the bottoms thereof are fixed in the heat shield plate 20. Heat cooking by the heater 32 is performed on the plate 30 located above the heater 32.

  The heater 32 is a sheathed heater having a substantially heart shape or Y shape in plan view. A coiled heating wire is passed through a metal pipe, and heat resistance such as magnesia is prevented to prevent contact between the pipe and the heating wire. It is composed of a structure in which inorganic insulating powder is packed and both ends of a metal pipe are sealed, and is usually called an incoloy heater. Since the sheathed heater has such a structure, the metal pipe is insulated, and even if it touches the metal pipe, there is no electric shock. The heater terminals 32a, which are both ends of the heater 32, are energized by being inserted into the terminal holes 35a formed on both sides of the heat sensitive rod 36 of the temperature regulator 35. The heater 32 is not necessarily a sheathed heater, and other heaters may be used.

  The temperature controller 35 is a device having a function of controlling the amount of current supplied to the heater 32, and an electric wire 37 is connected to one side surface thereof, and the central hole 23 of the heat shield plate 20 is connected to the other side surface. A heat-sensitive rod 36 is inserted. Further, terminal holes 35a into which the heater terminals 32a are inserted are provided on both sides of the heat sensitive rod 36, and a temperature adjustment knob 38 is provided on the upper surface thereof, and the temperature adjustment knob 38 is rotated. This allows you to select your favorite temperature. When the hot plate H is set and the temperature controller 35 is inserted into the receiving cover 40, the heat sensitive rod 36 enters from the central hole 23 of the heat shield plate 20 to the vicinity of the heater 32 in the heat shield plate 20. Detect the temperature of

  The receiving cover 40 is a hollow, resin-made box-shaped member, and its front is shown in FIG. 8 and its back is shown in FIG. An opening 41 is formed on the front side, and a back surface opposite to the opening 41 is a closed surface 42. The closed surface 42 has a cover center hole 43 having substantially the same diameter and cover side holes on both sides thereof. 44, 44 are provided. Further, the closing surface 42 has a flange portion 45 projecting outward on both sides, and the flange portion 45 is provided with a screw hole 46. Further, a recessed groove 47 recessed in the long side direction having a height H1 and a lateral width R1 is provided on the back side of the closing surface 42. When the receiving cover 40 is attached to the mounting plate 50, the mounting plate 50 is placed in the recessed groove 47. Mated.

  The mounting plate 50 is a member made of stainless steel for mounting the receiving cover 40 to the heat shield plate 20, and a flat plate is produced by press molding. FIG. 6 shows the front, and FIG. 7 shows the back. The mounting plate 50 has a horizontal part 51, a vertical part 52, and a side wall part 53. The horizontal portion 51 is a horizontal, substantially U-shaped portion whose upper surface is in contact with the bottom surface of the heat shield plate 20 and is screwed, and a notch for avoiding the leg 21 of the heat shield plate 20 at the center. An opening 51a is provided, and a screw hole 51b is provided in the vicinity of the tip.

  The vertical portion 52 is a vertical and square portion whose back surface is in contact with the concave groove 47 on the back surface of the receiving cover 40 and is screwed, and a plate center hole 52a is provided at the center thereof, and the plate center hole 52a. On both sides, plate side holes 52b and 52b having the same diameter as the plate center hole 52a are formed, and further, screw holes 52c are formed on the opposite side of the plate side holes 52b and 52b from the plate center hole 52a. Drilled. The vertical portion 52 is slightly smaller than the concave groove 47 on the back surface of the receiving cover 40.

  The side wall portion 53 is a portion that is bent at right angles to the horizontal portion 51 direction from both ends of the vertical portion 52, and includes a rectangular rib 54 having a width S and a height (H2-W) as shown in FIG. . W is the length of the cut 56 formed between the lower end of the rib 54 and the horizontal portion 51. By providing the cut 56, a force is applied to the mounting plate 50 in the direction indicated by the white arrow as shown in FIG. When F is added, the vertical portion 52 is bent in an arc shape as indicated by a black arrow around the fulcrum indicated by the arrow, and the force F can be absorbed. The width S is a distance between the heat shield plate 20 and the vertical portion 52, and when the receiving cover 40 is attached, the width S is a distance separating the heat shield plate 20 and the receiving cover 40 from each other.

  Further, a locking piece 55 is extended on the upper end portion of the side wall portion 53 so as to protrude outward from the rib 54. The locking piece 55 includes a tip protrusion 55a and a connecting portion 55b. The tip protrusion 55a is a substantially elliptical portion extending in the vertical direction, and its height D2 is shorter than the height D1 of the vertically long groove 25a of the locking groove 25 of the heat shield plate 20. The connecting portion 55 b is a portion that connects the upper end portion of the rib 54 and the tip protrusion 55 a, and the height d 2 is shorter than the height d 1 of the vertical short groove 25 b of the locking groove 25 of the heat shield plate 20.

  Attachment of the receiving cover 40 and the attachment plate 50 is performed as follows. The back surface of the vertical portion 52 of the mounting plate 50 is brought into contact with the concave groove 47 formed on the back surface of the closing surface 42 of the receiving cover 40, and the cover central hole 43, the cover side holes 44 and 44, and the flange portion of the receiving cover 40 are provided. The screw holes 46, 46 of the 45 are aligned with the plate center hole 52a, the plate side holes 52b, 52b and the screw holes 52c, 52c of the mounting plate 50, and the screw holes of the cover 40 are received as shown in FIG. The receiving cover 40 and the mounting plate 50 are integrally fixed by inserting from 46 and 46 and screwing into the screw holes 52c and 52c of the mounting plate 50, thereby forming the receiving cover mounting plate unit Y. Since the vertical portion 52 of the mounting plate 50 can be fitted in the concave groove 47 of the receiving cover 40, the mounting is facilitated.

  Next, the receiving cover mounting plate unit Y is mounted on the heat shield plate 20. The attachment is performed as follows. That is, as shown in FIG. 4, the tip protrusions 55 a of the two locking pieces 55 of the mounting plate 50 are opposed to the longitudinal grooves 25 a of the two locking grooves 25 provided in the corner portion 27 of the heat shield plate 20. In this way, the receiving cover mounting plate unit Y is positioned, and the receiving cover mounting plate unit Y is pushed in the direction of the arrow (1). At that time, the mounting plate 50 is pushed in horizontally with the upper surface of the horizontal portion 51 in contact with the bottom surface of the heat shield plate 20. Then, in the receiving cover mounting plate unit Y, the connecting portion 55 b of the locking piece 55 faces the same height as the vertical short groove 25 b of the heat shield plate 20. Therefore, the receiving cover mounting plate unit Y is slid horizontally in the direction of the arrow (2). As a result, the connecting portion 55 b of the locking piece 55 is inserted into and supported by the vertical short groove 25 b of the heat shield plate 20. In this state, the two screw holes 26 on the bottom surface of the heat shield plate 20 and the two screw holes 51b of the horizontal portion 51 of the mounting plate 50 coincide with each other, so that the screw 57 is screwed into the heat shield plate 20. Both members are fixed by

  When the receiving cover mounting plate unit Y is fixed to the heat insulating plate 20, the central hole 23 of the heat insulating plate 20, the plate central hole 52a of the mounting plate 50, and the cover central hole 43 of the receiving cover 40 coincide with each other. The side hole 24, the plate side hole 52 b of the mounting plate 50, and the cover side hole 44 of the receiving cover 40 coincide with each other. Then, the heater terminal 32a protruding outward from the side hole 24 of the heat shield plate 20 extends from the cover side hole 44 of the receiving cover 40 into the opening 41 of the receiving cover 40 as shown in FIGS. Protrusively. As a result, the heat sensitive bar 36 of the temperature controller 35 can be inserted into the heat shield plate 20 through the cover center hole 43, the plate center hole 52 a and the center hole 23 of the heat shield plate 20. By providing the mounting plate 50 at the corner portion 27, a space can always be formed in the left and right X and Y portions of the corner portion 27 as shown in FIG. The distance can be reduced and the size can be reduced.

  When the heat shield plate 20 and the mounting plate 50 are fixed by the two screws 57, the heat shield plate 20 and the mounting plate 50 are attached in a form of two-point fixing by the screws 57 and two-point support by the locking pieces 55. Therefore, if the impact force F is applied to the receiving cover mounting plate unit Y in the direction indicated by the white arrow in FIG. There is a possibility that the cover mounting plate unit Y or the heat shield plate 20 may be damaged or deformed. By fixing the two points and supporting the two points, the receiving cover mounting plate unit Y is painted black around the fulcrum indicated by the arrow. As indicated by the arrow, it can be bent in an arc shape, and the impact force F can be absorbed. The receiving cover 40 is also a kind of convex shape, and the received impact force F can be dispersed.

  The state after attachment is shown in FIG. In the attached state, the receiving cover 40 itself is located away from the heat shield plate 20, and thus heat conduction from the heat shield plate 20 to the receiving cover 40 becomes indirect. Therefore, it is not necessary to make the material of the receiving cover 40 highly heat resistant.

  Further, the ribs 54 on both side surfaces of the mounting plate 50 are configured to surround the side surfaces of the heat shield plate 20 and the mounting plate 50, the inclined outer surface of the heat shield plate 20, the horizontal portion 51 of the mounting plate 50, and the vertical portion. An internal space 58 is formed as an air gap having a substantially triangular longitudinal section between 52 and the rib 54. Since the outside air is blocked by the internal space 58, the temperature drop in the vicinity of the thermal rod 36 is suppressed, and the temperature detection by the thermal rod 36 becomes more accurate.

  The present invention is not limited to the configuration of the above embodiment, and can be appropriately changed in design without departing from the gist of the invention. For example, the receiving cover mounting plate unit Y has the corner portion 27 of the heat shield plate 20. However, it may be provided on a straight side portion. When a hot plate is placed on a table and a person sits around the hot plate, the hot plate often sits at a position facing the four sides of the hot plate, and the receiving cover mounting plate unit Y is provided at the corner portion 27 of the heat shield plate 20. Therefore, it will not get in the way of people.

Whole perspective view of the hot plate of the present invention The perspective view which looked at the heat-shielding board which attached only the heater of this invention from the upper direction The perspective view which looked at the state which attached the receiving cover and the attachment board to the heat shield of this invention from the bottom The perspective view which shows the state which attaches a receiving cover and a mounting plate to the heat shield of this invention Sectional drawing which shows the state which attached the attachment board to the heat shield of this invention The perspective view which looked at the mounting plate of this invention from the substantially front. The perspective view which looked at the mounting plate of this invention from the back almost The perspective view which looked at the receiving cover of this invention from the front almost The perspective view which looked at the receiving cover of this invention from the back almost Exploded sectional view of a conventional hot plate

Explanation of symbols

H ... Hot plate Y ... Cover mounting plate unit 10 ... Case body 11 ... Leg 12 ... Recessed fitting 14 ... Notch hole 20 ... Heat shield plate 21 ... Leg 22 ... Heater mounting piece 22a ... Screw 23 ... Center hole 24 ... Side part Hole 25 ... Locking groove 25a ... Longitudinal groove 25b ... Vertical short groove 26 ... Screw hole 27 ... Corner 30 ... Plate 30a ... Handle 32 ... Heater 32a ... Heater terminal 35 ... Temperature controller 35a ... Terminal hole 36 ... Thermal rod 37 ... Electric wire 38 ... Temperature knob 40 ... Receiving cover 41 ... Opening portion 42 ... Closing surface 43 ... Cover central hole 44 ... Cover side hole 45 ... Hard 46 ... 51 ... Horizontal part 51a ... Notch opening 51b ... Bis hole 52 ... Vertical part 52a ... Plate center hole 52b ... Plate side hole 52c ... Bis hole 53 ... Side wall part 54 ... Rib 55 ... Locking piece 55a ... Tip protrusion 55b ... Connecting portion 56 ... Incision 57 ... Bis 58 ... Internal space

Claims (1)

A case main body, a heat shield plate accommodated in the case main body, a heat source arranged in the heat shield plate, a plate placed above the heat source, a temperature controller, A hot plate having a receiving cover for supporting the temperature controller and a mounting plate for mounting the receiving cover;
The heat shield plate has a locking groove;
The mounting plate has a locking piece,
The mounting of the heat shield plate and the mounting plate is partly fixed, the other is locking by the locking piece and the locking groove,
A hot plate, wherein a receiving cover is attached to an outer surface of the heat shield plate via the mounting plate, and the heat shield plate, the heating source, and the receiver cover are integrally attached to and detached from the case body. .

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