JP3271899B2 - Electric cooker safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an electric cooker provided with a heating plate such as a hot plate.

[0002]

2. Description of the Related Art An electric cooker provided with a cooking plate such as a hot plate has a heater mounted on a cooking device main body, and the cooking plate is removably mounted on the heater. There is a type in which a heater is mounted on the lower surface and the cooking plate is removably mounted on the cooking device body. In either case, when the cooking plate is removed, the heater is directly exposed, and it is dangerous to energize the heater in that state.

[0003] For this reason, conventionally, as a safety device, a baffle plate urged by a spring is provided in a plug receiver of a heater, and when the cooking plate is placed on the cooking device main body, the baffle plate resists the spring force. So that you can insert the plug while retracting,
Further, there is known an arrangement in which when the cooking plate is removed from the cooking device main body, the baffle plate is moved by the spring force so that the plug cannot be inserted (for example, Japanese Utility Model Laid-Open No. 57-103029, Japanese Utility Model Laid-Open No. 58-58). No. 36590).

[0004]

The safety device as described above is effective in the case of a single-sided use type in which a cooking portion is provided only on one side of the cooking plate. However, different types of cooking portions are provided on the upper and lower surfaces of the cooking plate. In the case of a type in which the upper and lower surfaces are inverted as needed, the above-mentioned safety device cannot cope with the above.

[0005] This is because if a cooking plate having a baffle plate (see Japanese Utility Model Application Laid-Open No. 57-103029) is to be applied to a double-sided type, another similar baffle plate must be provided on the opposite surface. There are inconveniences. In addition, a baffle plate is provided on the cooker main body side (see the above-mentioned Japanese Utility Model Application Laid-Open No. 58-36).
590), it is inconvenient that projections for operating the baffle must be provided on both upper and lower surfaces of the cooking plate, respectively. There are also disadvantageous problems.

[0006] In addition, the safety devices in the case of the single-sided type described above are all detached by inserting the plug of the power cord and removing the cooking plate from the cooking device body in a state where the power is supplied. There was room for improvement in terms of safety.

SUMMARY OF THE INVENTION In view of the above, it is a first object of the present invention to provide a safety device which has a simple structure and does not cause any inconvenience in design in a double-sided electric cooker. .

It is a second object of the present invention to provide a safety device that prevents the cooking plate from being detached from the cooker body when the plug is inserted into the plug receptacle of the cooking plate. Furthermore, the third problem is that the plug receiver can be fitted to an accurate position when the cooking plate is turned upside down.
The purpose of.

[0009]

[0010]

Means for Solving the Problems In order to achieve the first object, according to the first aspect of the present invention, a heater is cast in the thickness of a cooking plate and the heater is provided on both upper and lower surfaces of the cooking plate. A cooking section is provided, and the cooking plate is detachably mounted on the cooking device body,
An electric cooker in which a pair of heater terminals and a heat-sensitive rod insertion hole are provided in a plug receiver attached to the cooking plate, and the upper and lower surfaces of the cooking plate are used as required when necessary. A baffle plate guide portion is provided along the heat-sensitive bar insertion hole, and a baffle plate accommodated in the baffle plate guide portion so as to be vertically movable is closed with the insertion hole matching the heat-sensitive rod insertion hole and the heat-sensitive bar insertion hole. A closing portion is provided, and a blocking release hole into which the blocking releasing projection of the cooking device main body is fitted is provided at upper and lower end surfaces of the baffle plate guiding portion, respectively, and when the cooking plate is separated from the cooking device main body, When the baffle plate is at the lowered position due to its own weight, and its blocking portion closes the heat-sensitive rod insertion hole, and when the cooking plate is placed on the cooker main body, the blockage release projection fits into the blockage release hole. By pushing up the baffle , In which the insertion hole of the baffle plate and so as to conform to the thermal rod insertion hole.

[0011] In the above-mentioned electric cooker, when the cooking plate is removed from the cooking device main body, regardless of the vertical direction of the cooking plate,
The baffle plate is lowered by its own weight, and closes the heat-sensitive rod insertion hole at the closed portion, making it impossible to insert the plug.

When the cooking plate is placed on the cooking device body,
Regardless of the vertical orientation of the cooking plate, the closing release projection of the cooker body is fitted into the lower blocking release hole, and the blocking release projection pushes up the baffle plate to release the closed state,
The insertion hole of the baffle plate is matched with the insertion hole of the heat-sensitive rod, and the plug can be inserted.

According to a second aspect of the present invention, a heater is cast in the thickness of a cooking plate, and cooking portions are provided on both upper and lower surfaces of the cooking plate. The cooking plate is detachably mounted on the cooking device main body, and a pair of heater terminals and a heat-sensitive rod insertion hole are provided in a plug receiver attached to the cooking plate, and the upper and lower surfaces of the cooking plate are inverted if necessary. In the electric cooker, a lock plate is fixed to the cooker main body, and when the cooker plate is placed on the cooker main body, a lock hole matching the heat-sensitive rod insertion hole is provided in the lock plate, When the plug of the cord is inserted into the plug receiver, a heat-sensitive rod provided on the plug is inserted into the heat-sensitive rod insertion hole and the lock hole.

According to the above construction, since the heat-sensitive stick of the plug is inserted into the lock hole of the lock plate attached to the cooking device main body, the cooking plate is locked to the cooking device main body when the plug is inserted into the plug receiver. And cannot be removed.

In order to achieve the second object, a heater is cast in the thickness of the cooking plate and cooking portions are provided on both upper and lower surfaces of the cooking plate. The cooking plate is detachably mounted on the cooking device body, and a pair of heater terminals and a heat-sensitive stick insertion hole are provided in a plug receiver attached to the cooking plate, and the upper and lower surfaces of the cooking plate are inverted as necessary. In the electric cooker to be used,
A hook plate is slidably housed in the plug receiver in the inward and outward directions, a hook hole concentric with the heat-sensitive rod insertion hole is provided in the hook plate, and an outward urging force is applied to the hook plate, so that the cooking is performed. The plug receiving recess of the container body is provided with a locking projection projecting into the plug receiver, and when the plug is inserted into the plug receiver, a part of the plug pushes the hook plate into the plug plate. The hook provided may be configured to engage with the locking projection.

In this case, when inserting the plug into the plug receiver, the heat-sensitive rod is inserted into the hook hole of the hook plate housed in the plug receiver, and the hook of the hook plate is engaged with the main body of the cooker. Since it is engaged with the projection, the cooking plate is locked to the cooker body and cannot be removed.

Further, in order to achieve the third object, an invention according to claim 4, the upper Symbol plug receptacle, in the surface facing the plug-receiving housing concavity of the cooker body accept this A vertically identical rib is provided on one of the opposing surfaces at a symmetric position with respect to a vertical reference plane passing through the center of the heat-sensitive rod insertion hole, and a groove of the same shape fitted with the rib is provided on the other opposing surface. Is provided.

According to a fifth aspect of the present invention, a plurality of supporting legs for mounting the cooking plate are provided on the cooking device body, and a plurality of mounting surfaces for mounting on the supporting legs are provided on both upper and lower surfaces of the cooking plate. In a safety device for a cooking appliance in which each mounting surface is mounted on the support leg regardless of whether the cooking plate is used in any of the upper and lower directions, the upper and lower mounting surfaces of the cooking plate are connected to the heater. The terminal and the horizontal reference plane passing through the heat-sensitive rod insertion hole are provided at symmetrical positions with respect to the horizontal reference plane.

According to this configuration, even when the cooking plate is turned upside down, the positions of the plug receiver, the heater terminal therein, and the heat-sensitive rod insertion hole with respect to the cooker main body do not change.
The plug can be inserted smoothly.

[0020]

[0021]

[0022]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the electric cooker of the present invention includes a cooker main body 1 and a double-sided use cooking plate 2 which is detachably mounted on the cooker main body 1.

The cooking device main body 1 is a rectangular dish-shaped unit integrally formed of a heat-resistant synthetic resin, has a frame-shaped guard 3, and has a heat shield plate 4 mounted on the bottom surface.

A center portion of one short side of the guard 3 is provided with a plug receiving recess 5 which is opened inward and outward.
A vertical positioning groove 6 is formed on the opposing inner surface forming the recess 5. A blocking release projection 7 is formed at the center of the bottom surface of the recess 5 (an intermediate position of the short side). Further, a lock plate 8 fixed to the heat shield plate 4 stands inside the blockage release projection 7. A notch 9a for fitting the handle 9 is provided on the other short side of the guard 3. The lock plate 8 is provided with a lock hole 10.

Further, the inner surface of each long side of the guard 3 is
A plurality of support legs 11 are provided, and the cooking plate 2 is placed on the upper end surfaces of a total of four support legs 11 on both sides.

The cooking plate 2 is a rectangular iron plate, and ribs 12 surrounding four sides are formed on upper and lower surfaces, and upper and lower cooking portions 13, 13 'are provided inside the rib 12. In the case shown in the figure, the upper cooking unit 13 is provided with a number of parallel ribs 14 in the direction of the short side, as shown in FIGS. 2 and 3, and is used for grilling meat. The other lower cooking unit 1
As shown in FIGS. 2 and 4, 3 'is provided with hemispherical recesses 15 in 5 rows and 4 rows at regular intervals, and is used for takoyaki cooking.

One heater 16 is cast into the inside of the thickness of the cooking plate 2, and a plug receiver 17 is attached to a central portion of one short side of the cooking plate 2. As shown in FIG. 5, the plug receiver 17 has a lower member 17a and an upper member 17b which are vertically aligned, integrated by screws 18 screwed from below, and further horizontally on the side surface of the cooking plate 2 via a spacer 19. It is attached by screws 21 screwed in the direction.

The heater 16 is provided inside the plug receiver 17.
Are protruded, and the heater terminal 16a is screwed to the protruding portion via an insulator 16b. The lower member 17a of the plug receiver 17 is provided with a lower guide hole 23a that is open at the upper end, and a semicircular recess 24a that is open upward is provided on each side surface of the upper end of the lower guide hole 23a.

Also, the upper member 17b of the plug receiver 17
The upper guide hole 23b whose lower end is open is the lower guide hole 23a.
The upper guide hole 23b is provided with a semicircular recess 24b which is opened downward on both side surfaces at the lower end thereof.

The lower guide hole 23a and the upper guide hole 23b are vertically abutted to form the baffle plate guide portion 23, and the upper and lower semicircular recesses 24a, 24b form the heat-sensitive rod insertion hole 24. (See FIG. 6B).

The heat-sensitive rod insertion hole 24 and the heat-sensitive hole 25 (see FIG. 2) provided at the center of the short side of the cooking plate 2 are concentric.

The lower end surface and the upper end surface of the baffle plate guide portion 23, that is, the lower end surface of the lower guide hole 23a and the upper guide hole 23b
Opening holes 26a and 26b are respectively formed on the upper end surfaces of the holes (see FIGS. 6A and 6B).
The closing release projections 7 of the cooker main body 1 are alternatively fitted into a and 26b.

The baffle plate 27 is housed in the baffle plate guide 23 so as to be vertically movable. As shown in FIG. 5, the baffle plate 27 is a square plate, and has an insertion hole 28 at the center thereof, and the lower and upper portions of the insertion hole 28 are closed portions 2 respectively.
9a and 29b.

When the cooking plate 2 is removed from the cooking device main body 1, the baffle plate 27 rests on the lower block release hole 26a as shown in FIGS. 6 (a) and 6 (b). The insertion hole 28 of the baffle plate 27 is lower than the heat-sensitive rod insertion hole 24,
The upper closing portion 29b closes the heat-sensitive rod insertion hole 24.

However, when the cooking plate 2 is placed on the cooking device main body 1, as shown in FIG. 6 (c), the blockage release projection 7 is fitted into the lower blockage release hole 26a, and the baffle plate 27 is pushed up. The insertion hole 28, the heat-sensitive rod insertion hole 24, the lock hole 10 of the lock plate 8, and the heat-sensitive hole 25 are concentric.

As shown in FIG. 7, the positional relationship between the heat-sensitive rod insertion hole 24 and the pair of heater terminals 16a in the plug receiver 17 is such that the heat-sensitive rod insertion hole 24 and the pair of heater terminals 16a are in the same horizontal line. Each heater terminal 16a is in a symmetrical position with respect to a vertical line V located above H and passing through the center of the heat-sensitive rod insertion hole 24. Further, the shape of the receiving port 33 of the plug receiver 17 is formed in a vertically and horizontally symmetrical shape with respect to the horizontal line H and the vertical line V.

Due to such a positional relationship, even if the cooking plate 2 is turned upside down, the plug 34 can be fitted into the plug receiver 17 without changing the vertical direction of the plug 34 (see FIG. 2). .

The upper and lower cooking units 13, 1 on the cooking plate 2
Two sets of left and right two sets of mounting surfaces 31 are provided on the inner side along the long side of the 3 ′ rib 12 at a predetermined interval (see FIGS. 3 and 4).

The height of the mounting surface 31 is as shown in FIG.
As shown in (b), the height is set to the same height a with respect to the horizontal plane including the horizontal line H, and the symmetrical position is separated by a fixed distance b with respect to the vertical plane including the vertical line V. Due to such a positional relationship, when the cooking plate 2 is turned upside down, each mounting surface 31 is placed on the same support leg 11, and the position of the horizontal line H of the cooking plate 2 is maintained at the same height.

Further, on both side surfaces of the plug receiver 17, FIG.
As shown in (c), the distance c is determined based on the vertical plane.
A vertical guide rib 32 is provided at a symmetrical position of the plug receiver 17. When the plug receiver 17 is stored in the plug receiver storage recess 5 of the container main body 1, the guide rib 32 is fitted into the positioning groove 6 so that the plug receiver 17 is inserted. 17 is performed. With such a positional relationship, the position of the plug receiver 17 can be maintained at the same position even when the cooking plate 2 is turned upside down.

The electric cooker according to the first embodiment is as described above. Now, as shown in FIG.
When the cooking plate 2 is placed on the cooking device main body 1 with the cooking plate 2 facing upward to use the cooking plate 3, the cooking plate 2 is separated from the cooking device main body 1 as shown by a two-dot chain line in FIG. 6A and 6B, the closing portion 29b on the upper side of the baffle plate 27 closes the heat-sensitive rod insertion hole 24, as shown in FIGS. For this reason, the plug 34 of the power cord cannot be fitted into the plug receiver 17, so that the heater 16 cannot be energized.

[0042] Placing the cooking plate 2 on the cooking device body 1, the placement surface 31 is supported resting on the supporting legs 11, the cooking device body 1 side of the closure release protrusion as shown in FIG. 6 (c) 7th grade
The protruding portion fits into the lower block release hole 26a, and the baffle 27
Push up. Thereby, the closing of the heat-sensitive rod insertion hole 24 is released, and the heat-sensitive rod insertion hole 24 of the plug receiver 17, the insertion hole 28 of the baffle plate 27, the lock hole 10 of the lock plate 8, and the heat-sensitive hole 25 of the cooking plate 2 are concentric. So, plug receiver 1
The plug 34 can be inserted into the connector 7. Thus, the heater 16 can be energized, and the heat-sensitive rod 35 of the plug 34 can be inserted into the heat-sensitive hole 25.

In this way, the electric power is supplied to the heater 16 so that the cooking plate 2 is heated and cooking is performed. Even if it is attempted to lift the cooking plate 2 in the energized state, the cooking plate 2 cannot be separated from the cooking device main body 1 because the cooking plate 2 is locked to the lock plate 8 via the heat-sensitive bar 35.

Next, when the cooking plate 2 is turned upside down and the lower cooking portion 13 'for takoyaki cooking is intended to be used upward, the plug 34 is removed and the cooking plate 2 is lifted. The plug receiver 17 is rotated 180 degrees about the heat-sensitive rod insertion hole 24. Then, the plug receptacle 33
The shape, the position of the heater terminal 16a, and the positional relationship of the placing surface 31 are maintained in the same shape and the same positional relationship as before the inversion, so that the cooking plate 2 is placed on the cooking device main body 1 in the same manner as before the inversion. The plug 34 can be inserted into the plug receiver 17 without changing the vertical direction of the plug 34.

In another embodiment shown in FIGS. 8A to 8C, the plug receiver 17 is provided with a mounting portion 36 protruding above the cooking plate 2 and the cooking plate 2 is mounted by screws 37 in the vertical direction. It is designed to be attached to the part 36.

The structures of the heat-sensitive rod insertion hole 24, the baffle plate 27, and the baffle plate guide portion 23 are the same as those described above, but differ in the lock structure.

That is, a lock projection 8 'having a lock hole 10' is provided at the position of the closing release projection 7 (see FIG. 1) of the plug receiving storage recess 5 of the cooker body 1, and the projection 8 'is provided. Fitting hole 38 for fitting into plug receiver 17
a and 38 b are provided on the lower surface and the upper surface of the plug receiver 17.

From the positions of the fitting holes 38a and 38b,
A hook plate 39 is housed by a guide 41 so as to be slidable inward and outward at a position close to the opening side of the plug receiver 17. The hook plate 39 is provided with a hook hole 42 concentric with the heat-sensitive rod insertion hole 24 at the center thereof and hooks 43 bent inward at both upper and lower ends thereof.

The hook plate 39 is also formed in a vertically symmetric shape with respect to the center of the hook hole 42. A coil spring 44 is interposed between the periphery of the hook hole 42 and the periphery of the heat-sensitive rod insertion hole 24 to urge the hook plate 39 outward.

In the electric cooker having the plug receiver 17 as described above, when the cooking plate 2 is separated, as shown in FIG. 8A, the closing portion 29b at the upper part of the baffle plate 27 is Close. When the cooking plate 2 is placed on the cooking device main body 1, as shown in FIG. 8B, the baffle plate 27 is pushed up by the closing release projection 7, and the heat-sensitive rod insertion hole 24 is opened.

When the plug 34 is inserted into the plug receiver 17 as shown in FIG. 8C, the heat-sensitive rod 35 is inserted into the hook hole 42 of the hook plate 39, the heat-sensitive rod insertion hole 24, and the insertion hole 28 of the baffle plate 27.
And is inserted into the heat-sensitive hole 25 of the cooking plate 2. At this time,
The plug 34 pushes the hook plate 39 against the spring force of the coil spring 44. Thus, the hook 43 is inserted into the 'lock hole 10 of the' lock collision <br/> force 8. Therefore, since the cooking plate 2 is engaged with the cooking device main body 1 via the heat-sensitive bar 35, the hook plate 39, and the locking projection 8 ', the cooking plate 2 is lifted and separated from the cooking device main body 1 in an energized state. Can not.

In addition, even when the upper and lower surfaces of the cooking plate 2 are inverted, the closing and opening of the heat-sensitive rod insertion hole 24 and the locking of the cooking plate 2 to the cooking device main body 1 can be performed by the same operation.

[0053]

According to the first aspect of the present invention, in an electric cooker having a double-sided use cooking plate, the cooking plate is cooked regardless of which of the upper and lower cooking portions of the cooking plate is used. It is safe because the cooking plate cannot be energized unless it is placed on the vessel body. Further, since the baffle for opening and closing the heat-sensitive rod insertion hole is moved up and down by its own weight, the baffle can be opened and closed by the same mechanism regardless of whether the cooking plate is up or down. For this reason, the opening / closing structure of the baffle plate is simplified, and a part of the opening / closing structure does not appear in the appearance, so that the design is excellent.

According to the second and third aspects of the present invention, the cooking plate cannot be separated from the cooking device main body as long as the plug is inserted into the plug receiver and the power is supplied, so that the invention is safe.

According to the fourth aspect of the present invention, when the cooking plate is turned upside down, the plug receiver can be correctly positioned and stored in the plug receiving storage recess of the cooking device main body. It can be smoothly attached and detached without any occurrence.

According to the fifth aspect of the present invention, the height of the cooking plate with respect to the cooking device main body can be maintained constant when the cooking plate is turned upside down.

[0057]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment.

FIG. 2 is a sectional view of the assembled state of the above.

FIG. 3 is a plan view of the above.

FIG. 4A is a bottom view of the cooking plate of the above;

FIG. 5 is an exploded perspective view of the plug receiving portion of the above.

FIG. 6 (a) is a longitudinal sectional front view of the same plug receiving part; FIG. 6 (b) is a longitudinal sectional side view of the same plug receiving part; FIG.

FIG. 7 (a) is a partially longitudinal front view of the above cooking plate, (b) a partially longitudinal side view of the above cooking plate, and (c) a partial plan view of the above cooking plate.

FIG. 8A is a cross-sectional view of a plug receiving portion of another embodiment. FIG. 8B is a cross-sectional view of a state where the same cooking plate is placed. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooker main body 2 Cooking plate 3 Guard 4 Heat shield plate 5 Plug receiving storage recess 6 Positioning groove 7 Closure release projection 8 Lock plate 8 'Lock projection 9 Handle 9a Notch 10, 10' Lock hole 11 Support leg 12 Rib 13 upper cooking part 13 'lower cooking part 14 rib 15 hemispherical recess 16 heater 16a heater terminal 16b insulator 17 plug receiver 17a lower member 17b upper member 18 screw 19 spacer 21 screw 22 both ends 23 baffle plate guide portion 23a lower guide hole 23b upper guide hole 24 heat-sensitive rod insertion hole 24a recess 24b recess 25 heat-sensitive hole 26a blocking release hole 26b blocking release hole 27 baffle plate 28 insertion hole 29a blocking portion 29b closing portion 31 mounting surface 32 guide rib 33 receiving port 34 plug 35 Heat sensing rod 36 Mounting part 37 Screw 38 Fitting hole 39 Hook plate 41 Guide 4 Peghole 43 hooks 44 spring

Continuation of the front page (56) References JP-A 52-146258 (JP, U) JP-A 6-4506 (JP, U) JP-A 54-65764 (JP, U) JP-A 52-112959 (JP) , U) Shokai Sho 56-79235 (JP, U) Registered utility model 3018313 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 37/06 321

Claims (5)

(57) [Claims] 1. A heater is cast in a thickness of a cooking plate, and cooking portions are provided on both upper and lower surfaces of the cooking plate. The cooking plate is removably mounted on a cooking device main body, and a plug attached to the cooking plate is provided. In an electric cooker provided with a pair of heater terminals and a heat-sensitive rod insertion hole in a receptacle, and the upper and lower surfaces of the cooking plate are used as required, the plug receiver is provided along the heat-sensitive rod insertion hole. A baffle plate guide is provided, and the baffle plate housed in the baffle plate guide so as to be vertically movable is provided with an insertion hole that matches the heat-sensitive rod insertion hole, and a closing portion that closes the heat-sensitive rod insertion hole. At the upper and lower end surfaces of the plate guide, there are provided blocking release holes into which the blocking release projections of the cooking device main body can be fitted, and when the cooking plate is separated from the cooking device main body, the baffle plate is lowered by its own weight. And the obstruction is When the hot rod insertion hole is closed and the cooking plate is placed on the cooking device main body, the baffle plate is pushed up by the blockage release projection being fitted into the blockage release hole, and the insertion hole of the baffle plate is inserted into the hole. A safety device for an electric cooker, wherein the safety device is adapted to match a heat-sensitive rod insertion hole. 2. A cooker is cast in the thickness of the cooking plate, and cooking portions are provided on both upper and lower surfaces of the cooking plate. The cooking plate is removably mounted on a cooking device main body, and a plug attached to the cooking plate is provided. In an electric cooker provided with a pair of heater terminals and a heat-sensitive stick insertion hole in the receiver, and the upper and lower surfaces of the cooking plate are inverted as needed, a lock plate is fixed to the cooking device body, When the cooking plate is placed on the cooking device main body, a lock hole matching the heat-sensitive rod insertion hole is provided on the lock plate, and a heat-sensitive bar provided on the plug when a power cord plug is inserted into the plug receiver. A safety device for an electric cooker, wherein the device is inserted into the heat-sensitive rod insertion hole and the lock hole. 3. A cooker is cast within the thickness of the cooking plate, cooking portions are provided on both upper and lower surfaces of the cooking plate, and the cooking plate is removably mounted on a cooking device main body, and a plug attached to the cooking plate is provided. In an electric cooker in which a pair of heater terminals and a heat-sensitive stick insertion hole are provided in a receiver and the upper and lower surfaces of the cooking plate are used as required, a hook plate is slid inward and outward in the plug receiver. The hook plate is provided with a hook hole concentric with the heat-sensitive rod insertion hole, and an outward urging force is applied to the hook plate. A locking projection protruding into the plug receiver is provided, and when the plug is fitted into the plug receiver, the hook plate is pushed in with a part of the plug, and the hook provided on the hook plate is engaged with the locking projection. To let A safety device for an electric cooker, comprising: 4. A top Symbol plug receptacle, in the surface facing the plug-receiving housing concavity of the cooker body accept this, vertically reference to symmetrical positions in the vertical reference plane passing through the center of the heat-sensitive rod insertion hole The rib having the same shape in the direction is provided on one of the opposing surfaces, and the groove having the same shape to be fitted with the rib is provided on the other opposing surface .
The safety device for an electric cooker according to claim 1. 5. A plurality of supporting legs on which the cooking plate is mounted are provided on the cooking device main body, a plurality of mounting surfaces mounted on the supporting legs are provided on both upper and lower surfaces of the cooking plate, and the cooking plate is oriented in any of up and down directions. In the safety device for a cooking appliance in which each mounting surface is placed on the support leg even when used in the above, the mounting surfaces on the upper and lower surfaces of the cooking plate are horizontally moved through the heater terminals and the heat-sensitive rod insertion holes. The safety device for an electric cooker according to any one of claims 1 to 4, wherein the safety device is provided at a symmetric position with respect to a reference plane.