JP4118842B2 - Electric cooker safety device - Google Patents

Description

  The present invention relates to a safety device for electric cookers such as hot plates and grill pans.

  Hot plates are used for various types of stir-fried dishes and grilled dishes in general households, but the cooking plates can be removed for the convenience of replacing the cooking plates according to the type of cooking and for the convenience of cleaning the cooking plates. Placed. In this case, since the heater is exposed when the cooking plate is removed, there is a safety problem in energizing the heater as it is. For this reason, a safety device has been conventionally provided that prevents the heater from being energized with the cooking plate removed.

  In addition, the heater and the heat shield installed below it are combined so that they can be disassembled for the sake of care, so that the heater is not energized without the heat shield installed. Such a safety device has also been conventionally provided (Patent Document 1).

  The above safety device is generally provided with an insertion hole for a thermal stick provided in the plug in a portion of the plug receiver provided on the outer surface of the exterior body of the electric cooking plate, and a detection member associated with each cooking plate in the insertion hole. When the cooking plate and the heat shield are installed in a regular state, the heat sensing rod must be inserted to a predetermined depth by matching the holes provided in each detection member with the insertion holes. Can do. As a result, the plug is fitted into the plug receptacle in a proper state so that it can be energized. If only one or both of the cooking plate and the heat shield are installed, the insertion of the heat-sensitive rod is prevented, so that the plug can not be inserted to the proper depth so that the power supply is cut off for safety. Yes.

On the other hand, in order to enable various uses of the cooking plate, it is known to provide a large square mounting hole in the central portion of the cooking plate so that the auxiliary plate can be detachably mounted in the mounting hole. (See Patent Document 1). Since the cooking surface of the cooking plate is formed around the mounting hole, two types of cooking can be performed at once using the cooking surface and the cooking surface of the auxiliary plate. Even in such an electric cooking plate, the above-described safety device is naturally adopted.
JP 2002-282132 A

  However, as described above, the conventional safety device is intended to detect whether or not the cooking plate and the heat shield are attached. Therefore, when the auxiliary plate is combined as described above, the auxiliary plate is used for cooking. Since there is a positional relationship placed on the central part of the plate, the heat sensitive rod does not reach the position of the auxiliary plate. For this reason, the safety device which detects the presence or absence of attachment of an auxiliary plate by preventing insertion of a heat sensitive rod like the past cannot be constituted. Therefore, in the case of Patent Document 1, no auxiliary plate detecting means is provided.

  However, since there is a heater part for heating the auxiliary plate on the bottom surface of the cooking plate mounting hole, if it is energized without mounting the auxiliary plate, it is exposed from the mounting plate part of the cooking plate. There is a disadvantage that the heater is energized.

  Therefore, an object of the present invention is to limit the position of the auxiliary plate so that the presence / absence of the auxiliary plate can be detected based on whether or not the thermal rod can be inserted.

  In order to solve the above-described problems, the present invention provides an exterior body, a heat shield attached to the inner bottom surface thereof, a heater set detachably mounted on the heat shield, and a heater set of the heater set. It consists of a cooking plate that is detachably attached to the heater, and an auxiliary plate is placed on the mounting hole provided in the cooking plate so as to be replaceable, and a plug having a temperature adjustment function is inserted into the plug receiver of the heater set. In the electric cooker in which the heat-sensitive rod provided on the plug is inserted into a part of the cooking plate from the side, the mounting hole of the cooking plate is provided at a position offset to the plug side, and the auxiliary plate A configuration was adopted in which an insertion portion for the thermal rod was provided, and detection means for detecting whether or not the auxiliary plate was placed was detected by whether or not the thermal rod was inserted into the insertion portion.

  According to the above configuration, when the auxiliary plate is placed at the proper position, the insertion portion pushes down the detection member, so that the tip of the thermal rod can be inserted into the insertion portion, and the plug is connected to the plug receptacle. On the other hand, the heater is energized as a result of fitting in a normal state. However, in the state where the auxiliary plate is not placed, the insertion of the heat sensitive bar is blocked by the detection member, and safety is achieved by making it impossible to energize.

  In addition, the said auxiliary | assistant plate can be formed in the magnitude | size which occupies the range of substantially half of the part which shifted to the plug side of the cooking plate. Thereby, the cooking surface of a cooking plate and the cooking surface of an auxiliary | assistant plate will be in the state with which the thing of the substantially the same size was located in the right and left. Of course, you may give a difference in the magnitude | size of both cooking surfaces.

  Further, the detection means is constituted by a detection member that protrudes in the middle of the insertion path of the heat sensitive rod and is urged upward, and the insertion portion is provided facing the detection member. When the auxiliary plate is placed, the height of the detection member in a normal state is higher than the position of the bottom surface of the insertion portion and the detection member is provided at a position not in contact with the cooking plate. The detection member is pushed down by the portion so that the heat-sensitive rod can be inserted, and when it is not placed, the heat-sensitive rod hits the detection member and cannot be inserted.

  Further, the cooking plate is provided with a hole facing the insertion portion, and when the auxiliary plate is placed on the cooking plate, the insertion portion is fitted into the hole, and the insertion portion fitted into the hole is used to As a configuration in which the detection member is pushed down or a configuration in which the height of the detection member is provided at a position where the detection member does not contact the cooking plate, a configuration in which the detection member faces the lower surface of the hole may be employed.

  As described above, according to the safety device for an electric cooker of the present invention, the insertion of the heat-sensitive bar is prevented and the plug cannot be fitted into the plug receptacle when the auxiliary plate is removed. As a result, there is no danger of energizing the heater in the exposed state from the mounting hole of the auxiliary plate, which is safe.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG.1 and FIG.2, the electric cooking plate of embodiment is the exterior body 1, the heat shield 2 installed in the inner bottom face, and the heater set mounted on this heat shield 2 3 and a cooking plate 5 mounted on the heater 4 of the heater set 3.

  The exterior body 1 is made of a synthetic resin and has a rectangular shape in which a guard portion 7 is provided on the periphery of the bottom surface 6 and four corner portions are formed in an arc shape as a whole (see FIG. 2). Concave portions 8 and 9 that are open to the inside and outside are provided in the central portion of the opposing short sides of the guard portion 7, and one concave portion 8 serves as a fitting portion for the handle 11 of the cooking plate 5, and the other concave portion 9 serves as a heater set. 3 is a fitting portion between the plug receiver 12 connected to the heater 4 and the other handle 13 of the cooking plate 5.

  The heat shield 2 is made of metal, and a peripheral wall 15 along the guard portion 7 is formed on the outer peripheral edge of the bottom surface 14. A notch 17 is provided at the short side of the peripheral wall 15 so as to face the recesses 8 and 9. A metal shallow water tray 18 is detachably mounted on the bottom surface 14 of the heat shield plate 2. A mark protrusion 19 that is long in the length direction of the outer package 1 is provided at the center of the water tray 18 by punching from the back surface. The ridge line of the protrusion 19 serves as a mark for the amount of water in the water tray 18. By using the projection 19 having a long ridge line in this way, it becomes easier to see the projection through the hole when using a cooking plate having a hole such as the cooking plate 5 having the cooking surface 46 for grilled meat described later. There is a merit that it is easy to confirm the water level.

  In the heater set 3, the sheathed heater is bent in a plane along the bottom surface 14 of the heat shield plate 2 to form the heater 4, and both ends thereof are inserted into the plug receptacle 12, and electrodes not shown in the figure are inserted therein. Connected to.

  As shown in detail in FIG. 3 and FIG. 4, vertical guide ridges 21 are provided on both side surfaces of the plug receiver 12, and the guide ridges 21 are provided on the inner surface of the recess 9. It is fitted in the guide groove 21 '. With the plug receiver 12 fitted in the recess 9, the plug receiver 12 occupies almost the lower half of the recess 9 as shown in FIG. 4, and the handle 13 of the cooking plate 5 is fitted in the upper half thereof. There is room to do. The heater 4 is supported and fixed by a heater receiver 22 provided on the heat shield plate 2.

  As shown in FIG. 5, an insertion hole 25 of a thermal rod 24 protruding forward from a plug 23 having a temperature adjustment dial 20 is provided inside the plug receiver 12, and the insertion path 25 including the insertion hole 25 is in the middle of the insertion path. The first detection plate 26 is provided so as to be movable up and down. As shown in FIG. 10, the first detection plate 26 is provided with a hole 27 having the same center as the insertion hole 25, and is normally biased upward by a spring 28. For this reason, the hole 27 does not coincide with the insertion hole 25. The upper end of the guide hole of the detection plate 26 is opened, and a protrusion 31 facing the opening 29 is provided on the lower surface of the handle 13.

  A second detection plate 32 is provided on the outlet side of the insertion path including the insertion hole 25 so as to be movable up and down. The detection plate 32 is also provided with a hole 33 (see FIGS. 3 and 7). In a normal state, the detection plate 32 is lowered by its own weight, and the hole 33 does not coincide with the insertion hole 25. Below the second detection plate 32, a detection piece 34 is fixed in contact with the notch 17 of the heat shield plate 2, and the detection piece 34 is also provided with a hole 35 (FIG. 3, FIG. 3). (See FIG. 4).

  The detection piece 34 has an annular mounting base 36 and is fixed to the bottom surface 14 of the heat shield plate 2 by a pair of left and right screws 37 (see FIG. 3). The bottom surface 14 of the heat shield plate 2 inside the mounting base 36 is open, and a cylindrical detection member 38 with the upper end closed and the lower end open is inserted into the open portion so as to be movable up and down. On the back surface of the heat shield plate 2, a collar-shaped spring bearing member 39 with a collar as shown in FIGS. 6 (a) and 6 (b) is provided so as to face the detection member 38, and the heat shield plate 2 is formed by the screws 37. It is fixed to the bottom. A spring 41 housed in the detection member 38 is supported by a spring receiving member 39, and an upward biasing force is applied to the detection member 38.

  The normal height of the detection member 38 is slightly higher than the center of the insertion hole 25 of the plug receiver 12 as shown in FIG. Accordingly, when the heat-sensitive rod 24 is inserted into the insertion hole 25 in this state, the tip of the heat-sensitive bar 24 abuts against the side surface of the upper end portion of the detection member 38.

  On the other hand, as shown in FIG. 2, the cooking plate 5 is a rectangular plate that fits inside the exterior body 1 as a whole, is formed in the same size as a normal case, and has a peripheral wall 44. In addition, the handles 11 and 13 are attached to the outer surface of the center portion of the opposed peripheral wall 44 on the short side. The portion different from the conventional case is provided between the peripheral walls 44 of the long side facing the partition rib 45 parallel to the short side in the central portion of the bottom surface portion 43, and the half on the handle 11 side from the partition rib 45 is a large number. It has a perforated cooking surface 46 in which slits are arranged (for example, it is used for grilled meat cooking). In the half on the handle 13 side from the partition rib 45, a rectangular mounting hole 47 is provided in the bottom surface portion 43. Around the mounting hole 47, the bottom surface portion 43 is left by a predetermined width to form a support edge 48. In addition to the above, the cooking surface 46 includes a flat surface suitable for stir-fry cooking and a surface provided with a number of semicircular recesses suitable for takoyaki cooking.

  An auxiliary plate 49 is detachably mounted on the mounting hole 47. The auxiliary plate 49 has a cooking surface 51 and a peripheral wall 52, is formed to be approximately half the size of the cooking plate 5, and is in close contact with the peripheral wall 44 on the handle 13 side along the partition rib 45 and the support edge 48. So as to be placed on the support edge 48. In a portion along the partition rib 45 of the auxiliary plate 49, an outward collar 53 provided on the peripheral wall 52 overlaps with the partition rib 45, and a part of the cooked food drops from the gap formed between the partition rib 45 and the peripheral wall 52. To prevent it. The cooking surface 51 of the auxiliary plate 49 is a flat surface in the case of illustration, and is used for stir-fried dishes.

  A handle 54 is provided on the side opposite to the side along the partition rib 45 of the auxiliary plate 49, and the insertion portion 55 of the heat-sensitive rod 24 protrudes downward on the back surface of the portion where the handle 54 is provided. It is done. An insertion hole 56 at the tip of the heat-sensitive rod 24 is provided in the horizontal direction on the side surface of the insertion portion 55 (see FIG. 5).

  A hole 57 into which the insertion portion 55 can be fitted is provided in the support edge 48 facing the insertion portion 55 (see FIG. 2). The hole 57 is located on the upper end surface of the detection member 38 with the cooking plate 5 placed at a predetermined position (see FIG. 9). For this reason, even if it puts the cooking plate 5, the detection member 38 does not contact this. However, when the auxiliary plate 49 is placed on the cooking plate 5 at a regular position, the insertion portion 55 is inserted into the hole 57. Since the insertion portion 55 is formed to have a height protruding downward from the lower surface of the cooking plate 5 (see FIG. 5), the detection member 38 existing below the hole 57 is pushed down. The insertion hole 56 is opened laterally on the lower surface of the cooking plate 5 in a state where the insertion portion 55 protrudes below the hole 57 to the maximum, and the center thereof coincides with the center of the insertion hole 25.

  In the left and right handles 11 and 13 of the cooking plate 5, as shown in FIG. 2, guide grooves that match the guide protrusions 75 and 76 provided on the inner surface of the recesses 8 and 9 of the exterior body 1. 77, 78 are provided.

  With the auxiliary plate 49 placed and mounted in the cooking plate 5 and its mounting hole 47, a heater groove 50 having a shape matching the shape of the heater 4 is formed on the back surface thereof (see FIGS. 1 and 2). Is provided. When the left and right directions of the cooking plate 5 and the auxiliary plate 49 are reversed, the heater 4 is not fitted in the heater groove 50 and the fit is poor, so that the user is informed of the opposite direction. As a result, it is possible to avoid an attachment state in which the auxiliary plate 49 is disposed on the side opposite to the plug receiver 12.

  The safety device for an electric cooking device of the embodiment is configured as described above, and the operation thereof will be described next.

  First, before the cooking plate 5 is placed, as shown in FIG. 7, since the first detection plate 26 remains biased upward, the insertion of the thermal bar 24 is prevented. . For this reason, the plug 23 is not properly fitted to the plug receiver 12 and is not energized. Further, even when the cooking plate 5 is placed, if the heat shield plate 2 is not mounted, the second detection plate 32 remains lowered by its own weight as shown in FIG. The insertion of the heat sensitive rod 24 is prevented, and in this case, the plug 23 is not fitted into the plug receiver 12 and is not energized.

  Further, in the state where the auxiliary plate 49 is not placed even when the heat shield plate 2 and the cooking plate 5 are mounted, as shown in FIG. In this case, the plug 23 is not properly fitted to the plug receiver 12 and is not energized.

  On the contrary, when the three members of the heat shield plate 2, the cooking plate 5 and the auxiliary plate 49 are placed in a normal state, the heat sensitive bar 24 is inserted deepest (see FIG. 5). For this reason, the plug 23 is fitted in the plug receiver 12 in a regular state, and the plug 23 can be energized by contact between the internal electrodes.

  In the above embodiment, the size of the cooking surface 46 of the cooking plate 5 and the size of the cooking surface 51 of the auxiliary plate 49 are substantially the same, but the ratio of the sizes can be arbitrarily selected. However, in any case, the position and orientation of the auxiliary plate 49 are defined so that the auxiliary plate 49 is positioned on the plug receiver 12 side and the insertion portion 55 is positioned on the plug receiver 12 side. As a result, the heat-sensitive rod 24 can reach the insertion portion 55 which is a part of the auxiliary plate 49. Therefore, by providing the detection member 38 operated by the insertion portion 55 in the insertion path of the heat-sensitive rod 24, The presence / absence of the auxiliary plate 49 can be detected based on whether or not the thermal rod 24 is inserted.

  By the way, since the cooking plate 5 and the auxiliary plate 49 are used by combining a plurality of types of cooking surfaces 46 and 51, a compact storage and storage property is required. Therefore, in this embodiment, the wire rack shown in FIGS. 11 to 14 is used. This wire rack includes a rack body 58 made of metal cage and a pair of plastic storage cases 59 and 59. The rack body 58 is configured to store the exterior body 1, the heat shield plate 2, the heater set 3, the plurality of cooking plates 5, and the lid 60 together in this order, and the storage case 59 is an auxiliary plate 49. The storage case 59 storing the auxiliary plate 49 is mounted on the rack body 58.

  The rack main body 58 includes front vertical rods 61 and 61 along the left and right sides on the lid 60 side, rear vertical rods 62 and 62 (see FIG. 12) along the left and right sides of the bottom surface of the exterior body 1, and the front vertical rods 61 and 61. 61, the front lower end horizontal flange 63 connecting the lower ends of the front 61, the rear lower end horizontal flange 64 connecting the lower ends of the rear vertical bars 62, 62, and the plane connecting the upper ends of the front vertical lamp 61 and the rear vertical bar 62, respectively. It has a lateral U-shaped scissors 65, 65 having a U-shape. In addition, two parallel bases 66 are provided to connect the front lower end side spatula 63 and the rear lower end side spatula 64 to the front and back, and the bases 66 support the whole. Moreover, the reinforcement connection rod 73 which connects the intermediate part of the front side vertical rods 61 and 61 mutually is provided.

  Furthermore, as an auxiliary member, downwardly U-shaped support rods 67 and 67 are provided on the base plate 66 so as to be offset from the front end thereof (see FIG. 14), thereby eliminating a step between the exterior body 1 and the side surface of the cooking plate 5. Like to do. Further, a support frame 68 that is long in the length direction is provided below the reinforcing connecting rod 73, and the storage cases 59, 59 are inserted into the left and right sections and stored. Also, a U-shaped support seat 69 is provided at the front end of the bases 66 and 66 so as to protrude forward from the front lower end horizontal side 63 and extend between both bases 66 and 66.

  Hooks 71, 71 that are mutually engaged on the front surfaces of the opening portions of the storage cases 59, 59 are provided, and the protective walls 72, 72 that surround the outer peripheral portions of the hooks 71, 71 protrude from the opening portions to the front surface side. 54 and 54 are protected.

  The wire-rack is configured as described above, and when it is used for storage, as shown in FIG. 15, the rack body 58 is tilted sideways so that the upper end opening of the rack body 58 faces sideways, The body 1, the cooking plate 5, the lid 60, etc. are fitted to the sides (see arrows) and the whole body is housed in the rack body 58, and then the rack body 58 is erected in the state shown in FIG. The storage case 59 is inserted into the support frame 68 to complete the entire storage. The storage case 59 is inserted without the hook 71 and the protective wall 72 hanging on the support frame 68, and is placed on the support seat 69 (see FIG. 14).

Cross-sectional view of the embodiment Exploded perspective view Partially enlarged exploded perspective view of the above The perspective view of the assembly state of the part of FIG. Sectional view of the plug receiving portion of the embodiment (A) Sectional view of the detection member part same as above, (b) Perspective view of the spring bearing member of (a) figure Partial sectional view of the embodiment before mounting the cooking plate Partial sectional view after the cooking plate of FIG. 7 is mounted Partial cross-sectional view before mounting the auxiliary plate of the embodiment Sectional drawing of the part of the 1st detection plate of embodiment Perspective view when stored in a wire rack A perspective view of the wire rack with the storage completed Cross-sectional plan view Side view Perspective view of the same storage

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Exterior body 2 Heat shield 3 Heater set 4 Heater 5 Cooking plate 6 Bottom face 7 Guard part 8 Recess 9 Recess 11 Recess 11 Handle 12 Plug receptacle 13 Handle 14 Bottom face 15 Perimeter wall 17 Notch 18 Water pan 19 Protrusion 20 Temperature control dial 21 Guide Ridge 21 'guide groove 22 heater receiver 23 plug 24 heat sensitive rod 25 insertion hole 26 detection plate 27 hole 28 spring 29 opening 31 projection 32 detection plate 33 hole 34 detection piece 35 hole 36 mounting base 37 screw 38 detection member 39 spring Receiving member 41 Spring 43 Bottom surface 44 Perimeter wall 45 Partition rib 46 Cooking surface 47 Mounting hole 48 Support edge 49 Auxiliary plate 50 Heater groove 51 Cooking surface 52 Peripheral wall 53 Brim edge 54 Handle 55 Insertion part 56 Insertion hole 57 Hole 58 Rack body 59 Storage Case 60 Lid 61 Front gutter 62 Rear gutter 63 Front bottom gutter 6 Rear lower Yoko杆 65 side rod 66 Moto杆 67 supporting rod 68 supporting frame 69 supporting seat rods 71 protruding hook 72 protective wall 73 reinforcing coupling rods 75, 76 the guide 77, 78 guide groove

Claims (2)

An exterior body (1), a heat shield plate (2) attached to the inner bottom surface, a water tray (18) placed on the bottom surface of the heat shield plate (2), and the heat shield plate (2 ) A heater set (3) that is detachably mounted on the heat shield plate (2) and supported by a heater receiver (22 ) and a heater (4) of the heater set (3). The auxiliary plate (49) is detachably mounted on the mounting hole (47) provided in the cooking plate (5) and has a temperature adjusting function (23). ) Is inserted into the plug receiver (12) of the heater set (3), and a heat sensitive bar (24) provided on the plug (23) is inserted from the side of the cooking plate (5). In the safety device of
A mounting hole (47) of the cooking plate (5) is provided at a position offset to the plug (23) side, and a bottom portion (43) of the cooking plate (5) is formed around the mounting hole (47 ) with a predetermined width. Forming a support edge (48) by leaving only
An insertion portion (55) of the heat-sensitive rod (24) is provided on the back surface of the auxiliary plate (49) so as to protrude downward, and a hole (57) into which the insertion portion (55) can be fitted into the support edge (48). Provided,
Detection means for detecting whether or not the auxiliary plate (49) is placed is detected by whether or not the thermal rod (24) can be inserted into the insertion portion (55), and is moved up and down along the insertion path of the thermal rod (24). It comprises a detection member (38) that protrudes freely and is biased upward,
The height of the detection member (38) in the normal state is set higher than the position of the bottom surface of the insertion portion (55) when the insertion portion (55) is inserted into the hole (57). ) On the lower surface of the hole (57) of the cooking plate (5),
When the auxiliary plate (49) is placed, the detecting member (38) is pushed down by the insertion portion (55) to allow the thermal rod (24) to be inserted. When the auxiliary plate (49) is not placed, the thermal rod ( 24) A safety device for an electric cooker, wherein 24) hits the detection member (38) and cannot be inserted .   The safety device for an electric cooker according to claim 1, characterized in that the auxiliary plate (49) occupies substantially half the range of the portion of the cooking plate (5) which is offset toward the plug (23). .

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