JP6604866B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker, and more specifically, a movable case that is provided on the front surface of the casing and that can move between a state protruding from the front surface and a state immersed in the front surface, and a plurality of operation switches provided on the movable case. It relates to a heating cooker provided.

  Some cooking devices such as a stove are provided with a plurality of operation switches for operation. These operation switches are often arranged on the front surface of the casing of the heating cooker, but are provided with a movable case that can move between a protruding state protruding from the front surface of the casing and an immersive state immersed in the front surface. There is also known a heating cooker in which a plurality of operation switches are arranged in a movable case (for example, Patent Document 1). In this cooking device, when the movable case is immersed, the operation switch is hidden inside the housing, but if the movable case protrudes from the front of the housing, the hidden operation switch appears outside the housing and can be operated. It becomes.

  In this way, since it is possible to hide the operation switch inside the housing when it is not necessary to operate the heating cooker, erroneous operation of the switch can be prevented. In addition, the front side of the cooking device can be cleaned to improve the appearance. As the operation switch, a small contact switch (hereinafter referred to as a micro switch) is used from the viewpoint of reducing the size of the movable case.

  Here, the heating cooker is used in an environment where it is easily soiled due to boiling or oily smoke. Therefore, if the microswitch is stuck and does not move, or if a contact failure occurs, the operation of the cooking device may be hindered. Therefore, in order to prevent the microswitch from being stuck or poorly contacted, a portion of the movable case where the microswitch is mounted is also covered with a thin flexible sheet. However, since the portion where the microswitch is provided is repeatedly pressed, the sheet may be torn while being used for a long time. As a result, the micro switch may still be stuck or poorly contacted, resulting in a situation that hinders operation.

JP 2013-092334 A

  Therefore, the inventors of the present application tried to solve the above problem by changing the microswitch to a capacitive switch. However, it has been found that changing the microswitch to a capacitive switch does not solve the problem. This is due to the following reason.

  First, electric power is required to operate the capacitive switch. In addition, since the cooking device is installed in a place where there is no power outlet, in many cases, a dry cell is used as a power source. Therefore, when applying the capacitance type switch to the heating cooker, it is necessary to detect that the movable case is in an immersive state and stop supplying power in order to suppress the consumption of the dry battery as much as possible. . Therefore, a new contact switch (such as a micro switch) is required for that purpose, and if the contact switch is stuck or contact failure occurs, it is impossible to detect that the movable case is in an immersive state and the dry battery is consumed. End up. Alternatively, the supply of power cannot be started without detecting that the movable case is in the protruding state. As a result, the operation switch cannot be operated after all.

  This invention was made | formed corresponding to the subject mentioned above which a prior art has, and aims at provision of the heating cooker which can operate an operation switch reliably also by long-term use.

In order to solve the above-described problems, the cooking device of the present invention employs the following configuration. That is,
A housing, and an operation portion provided with a plurality of operation switches on a movable frame that is provided on the front surface side of the housing and is movable from a front surface protruding from the front surface and a recessed state immersed in the front surface; When the movable frame is in the protruding state, the operation switch appears outside the casing and can be operated. When the movable frame is in the immersed state, the operation switch is housed inside the casing and cannot be operated. In
A drive circuit for driving a plurality of capacitance switches is mounted inside the movable frame or the housing,
The plurality of operation switches are the capacitive switches driven by the drive circuit,
When the movable frame is in the immersion state, the casing is made of a conductive material at a position that is provided on the movable frame and can be sensed by at least one of the capacitive switches driven by the drive circuit. A formed detected portion is provided.

  In such a cooking device of the present invention, when the movable frame provided on the front surface of the casing is in a protruding state protruding from the front surface of the casing, a plurality of operation switches appear outside the casing and can be operated. When the frame is immersed in the front surface of the housing, a plurality of operation switches are housed in the housing and cannot be operated. In addition, a drive circuit for driving a plurality of capacitance type switches is mounted inside the movable frame or the housing, and a capacitance type switch is adopted as the plurality of operation switches provided on the movable frame. ing. Furthermore, the casing is provided with a portion to be detected by a conductive material at a position where the capacitance type switch provided on the movable frame can be detected when the movable frame is immersed.

  In this way, it is possible to detect whether the movable frame is in the protruding state or the immersive state based on whether or not the detected portion is detected by the capacitance type switch provided on the movable frame. it can. The capacitance type switch can detect the presence / absence of the detected portion in a non-contact manner, and further has no movable portion, so that no sticking or poor contact occurs. For this reason, even when the cooking device is used for a long period of time, it is possible to reliably detect whether the movable frame is in the protruding state or the immersive state, and to stop unnecessary power supply. In addition, since the capacitive switch for detecting the state of the movable frame can be driven using a drive circuit for driving the operation switch, the overall structure is not complicated.

  Moreover, in the heating cooker of this invention mentioned above, you may provide an electrostatic capacitance type switch and a to-be-detected part as follows. That is, the movable frame is provided with at least one capacitance type switch at a position on the back side in the moving direction when the movable frame changes from the protruding state to the immersive state. The casing may be provided with a detected portion at a position facing the movable frame on the back side of the portion in which the movable frame is stored when viewed from the front of the casing.

  In many cases, the casing is formed of a sheet metal member, so that the detected portion can be easily provided. In addition, the capacitive switch and the detected part can be provided in the back of the housing. For this reason, even if it uses for a long time of a cooking-by-heating machine, the possibility that a capacitive switch malfunctions by the influence of dirt can be avoided.

  Or in the cooking-by-heating machine of the present invention mentioned above, you may provide a capacitance type switch and a detected part as follows. That is, the movable frame is provided with at least one electrostatic capacitance type switch at a position lateral to the moving direction of the movable frame. Furthermore, it is good also as forming a to-be-detected part by forming a housing | casing with a sheet-metal member and projecting a part of surface which faces the horizontal side of a movable frame toward a movable frame.

  In this way, the detected part can be easily provided. In addition, as for the capacitance type switch, if it is attached at a position lateral to the moving direction of the movable frame, an appropriate attachment position can be selected from the corresponding wide range. be able to.

  Or in the cooking-by-heating machine of the present invention mentioned above, it is good also as judging the state of a movable frame using an operation switch by doing as follows. In other words, the detected portion is provided at a position that can be detected by at least two operation switches among the plurality of operation switches when the movable frame is in an immersive state. Then, when at least two operation switches detect the detected part, it may be determined that the movable frame is in an immersive state.

  In this way, it is possible to detect whether or not the movable frame is in an immersive state by using the operation switch, so that it is not necessary to provide a capacitive switch in addition to the operation switch, and the structure is simplified. Can do.

In addition, in the cooking device of the present invention in which at least two operation switches detect the detected part when the movable frame is in an immersive state, it is determined that the movable frame is in an immersive state in the following cases. Also good. First, the positional relationship between at least two operation switches for detecting a detected portion and the detected portion when the movable frame is in an immersive state, such that the detected switches detect the detected portion at different timings. Set the positional relationship. And when those at least 2 operation switches detect a detected part in the predetermined order according to the positional relationship with a detected part, you may judge that a movable frame is in an immersion state.

  By doing so, not only the detected part is detected by at least two operation switches, but also the order in which these operation switches detect the detected part can be taken into consideration, so that the movable frame is in an immersive state. It becomes possible to detect more reliably.

It is a perspective view which shows the external appearance shape of the heating cooker 1 of 1st Example. It is a perspective view which shows the state which protruded the movable case 101 of the operation part 100 in order to operate the heating cooker 1 of 1st Example. It is explanatory drawing which shows a mode that the operation panel 110 provided in the operation part 100 of 1st Example was seen from upper direction. It is a circuit diagram which shows the connection relation of the some operation switch 111 mounted in the operation panel 110 of 1st Example, and the LED indicator 112. FIG. It is sectional drawing which shows the state which accommodated the movable case 101 of 1st Example, and the state made to protrude. It is sectional drawing which shows the operation part 100 of the 1st modification of 1st Example. It is sectional drawing which shows the operation part 100 of the 2nd modification of 1st Example. It is sectional drawing about the method of detecting accurately whether the movable case 101 is in the immersion state or the protrusion state in the 2nd modification of 1st Example. It is sectional drawing which shows the operation part 100 of the 3rd modification of 1st Example. It is sectional drawing which shows the operation part 100 of the 4th modification of 1st Example. It is a perspective view which shows the state which protruded the movable case 101 of the operation part 100 in order to operate the heating cooker 1 of 2nd Example. It is sectional drawing of the operation part 100 of 2nd Example. It is sectional drawing of the operation part 100 of the modification of 2nd Example.

  FIG. 1 is a perspective view showing the external shape of the heating cooker 1 of the first embodiment. The heating cooker 1 of the present embodiment is a so-called gas stove, and includes a casing 2 mainly formed of a sheet metal member and a top plate 3 placed on the casing 2. A stove burner 4L, a right stove burner 4R, and a rear stove burner 4B are provided. A grill 5 is housed in a central portion on the front side of the housing 2, and an operation button 6 for operating the grill 5 is mounted on the left side of the grill 5. On the right side of the grill 5, an operation button 7L for operating the left stove burner 4L, an operation button 7B for operating the rear stove burner 4B, and an operation button 7R for operating the right stove burner 4R are provided. It has been.

  Further, at the position below the operation buttons 7L, 7B, 7R on the front side of the housing 2, there is an operation unit 100 for performing detailed setting operations for the left stove burner 4L, the rear stove burner 4B, and the right stove burner 4R. Is installed. The grill 5 is also provided with an operation unit 150 for performing a fine setting operation at a position below the operation button 6 on the front side of the housing 2. As will be described later, the operation unit 100 includes a movable movable case 101. When the setting operation for the left stove burner 4L and the like is not performed, the movable case 101 is placed on the front surface of the housing 2 as illustrated. It can be stored. Similarly, the operation unit 150 includes a movable movable case 151, and the movable case 151 can be stored on the front surface of the housing 2 when the setting operation for the grill 5 is not performed. It has become.

  Of course, in a state where the movable case 101 of the operation unit 100 is housed, detailed setting operations for the left stove burner 4L and the like cannot be performed. Similarly, in a state where the movable case 151 of the operation unit 150 is stored, a fine setting operation for the grill 5 cannot be performed. However, when the front side of the movable case 101 is lightly pushed in, the stored movable case 101 protrudes from the front surface of the housing 2, and the left stove burner 4L, the rear stove burner 4B, and the right stove burner 4R. Detailed setting operations can be performed. Similarly, with respect to the movable case 151, when the front side of the movable case 151 is lightly pushed in, the stored movable case 151 protrudes from the front surface of the housing 2 and fine setting operations for the grill 5 are performed. It becomes possible. In this embodiment, the movable case 101 or the movable case 151 corresponds to the “movable frame” in the present invention. The state in which the movable case 101 or the movable case 151 is housed in the front surface of the housing 2 corresponds to the “immersion state” in the present invention, and the state in which the movable case 101 or the movable case 151 protrudes from the front surface of the housing 2 is described. This corresponds to the “protruding state” in the invention.

  FIG. 2 is a perspective view illustrating a state in which the movable case 101 of the operation unit 100 according to the first embodiment is protruded from the front surface of the housing 2. When the front surface of the movable case 101 is lightly pushed in the immersion state (see FIG. 1) in which the movable case 101 is housed in the front surface of the housing 2, the movable case 101 rotates about the rotation axis provided at the lower end, 2 is displayed. The operation panel 110 includes a plate-like member having a flat surface formed of a hard and non-conductive material (glass or the like), and an opaque resin sheet attached to the surface of the plate-like member. On the resin sheet, symbol figures representing setting contents for the left stove burner 4L, the rear stove burner 4B, the right stove burner 4R, and the grill 5 are displayed. Further, a transparent frame is formed on the resin sheet so that the operator can confirm the set contents.

  In the following description, the operation panel 110 is described as having an opaque resin sheet attached to the surface side of the plate-like member. However, the plate-like member is formed of a transparent material such as glass. If it is, a resin sheet may be attached from the back side of the plate-like member. In addition, when the plate-like member to which the resin sheet is attached is formed of an opaque material and the resin sheet can be attached to the surface side of the plate-like member, the resin sheet is formed of a transparent material. May be.

  FIG. 3 is an explanatory diagram illustrating a state in which the operation panel 110 provided in the operation unit 100 according to the first embodiment is viewed from above. As illustrated, the operation panel 110 includes a left operation area 110L for performing a setting operation for the left stove burner 4L, a rear operation area 110B for performing a setting operation for the rear stove burner 4B, and a right stove. A right operation area 110R for performing a setting operation for the burner 4R is provided. In each operation area (that is, the left operation area 110L, the rear operation area 110B, and the right operation area 110R), a symbol graphic 110g representing the setting contents and a transparent frame 110w for confirming the setting contents are formed. Yes.

  In the example shown in FIG. 3, the transparent frame 110w is formed in the upper part of each operation area. The transparent frame 110w may be formed by punching an opaque resin sheet, or may be formed by making the resin sheet transparent only at this portion. The LED indicator 112 is mounted on the back side of the transparent frame 110w.

  A plurality of symbol figures 110g are formed below the transparent frame 110w in accordance with the respective operation areas (that is, the left operation area 110L, the rear operation area 110B, and the right operation area 110R). For example, six symbol figures 110g are formed in the right operation area 110R. Among them, a symbol graphic 110g at the lower right in the shape of a thermometer is a graphic representing a cooking temperature setting operation. The symbol graphic 110g in the shape of a clock on the left is a graphic representing a timer setting operation, and the symbol graphic 110g in the shape of a kettle on the left is a graphic representing a setting operation for boiling water. . Further, a symbol graphic 110g displayed as “high-temperature fried” is a graphic representing a setting operation for cooking at a high temperature such as a fried food. Further, a symbol figure 110g having a “-” shape displayed on the right side and a “+” shape displayed on the right side thereof is a figure representing an operation for changing the setting contents of temperature and time. . One operation switch 111 is mounted on the back side of these symbol figures 110g. These operation switches 111 employ electrostatic capacitance switches that operate in a non-contact manner by detecting a change in electrostatic capacitance, and have the advantage that there are no movable parts.

  Similarly, in the left operation area 110L, six symbol figures 110g similar to the right operation area 110R are formed below the transparent frame 110w. Capacitance type switches are provided on the back side of the respective symbol figures 110g. The operation switch 111 is mounted. Regarding the post-operation area 110B, below the transparent frame 110w, a symbol graphic 110g in the shape of a clock, a symbol graphic 110g in the shape of a bowl filled with rice, or a symbol graphic in the form of “+” 110g, a symbol graphic 110g in the form of "-" is formed. Of these, a symbol figure 110g in the shape of a bowl is a figure representing a rice cooking setting operation. An operation switch 111 using a capacitive switch is also mounted on the back side of each symbol graphic 110g.

  FIG. 4 is a circuit diagram showing a rough connection relationship between the LED display 112 and the operation switch 111 mounted on the back side of the operation panel 110. As shown in the figure, the LED display 112 and the operation switch 111 are connected to a microcomputer 113, and the microcomputer 113 drives the LED display 112 and the operation switch 111 by a known method. The microcomputer 113 is also connected to a capacitance type switch (hereinafter referred to as a detection switch 114) used for a purpose different from that of the operation switch 111. The reason why the detection switch 114 is provided will be described in detail later. In this embodiment, the microcomputer 113 corresponds to the “drive circuit” in the present invention.

  As described above, by employing a capacitive switch as the operation switch 111, the operator can perform various setting operations simply by touching the symbol graphic 110g displayed on the operation panel 110. That is, when the operator touches one of the symbol figures 110g formed on the operation panel 110, the operation switch 111 mounted on the back side detects that. The microcomputer 113 detects which operation switch 111 is the operation switch 111 that has detected the contact, and recognizes the setting content intended by the operator. For example, it is assumed that the operation switch 111 that has detected contact is the operation switch 111 mounted on the back side of the symbol figure 110g of the thermometer in the lower right of the right operation area 110R. In this case, since the microcomputer 113 can recognize that the operator is trying to set the temperature of the right stove burner 4R, the microcomputer 113 displays the current set temperature set in the right stove burner 4R on the LED display 112. . In addition, when the operator wants to increase the set temperature by looking at the displayed temperature, he touches the symbol figure 110g on which “+” is displayed, and conversely intends to decrease the set temperature. In this case, since the finger touches the symbol graphic 110g on which “-” is displayed, the microcomputer 113 responds to the intention of the operator based on the output of the operation switch 111 mounted on the back side of each symbol graphic 110g. The set temperature can be changed. Other setting operations can be performed in the same manner.

  Thus, in the cooking device 1 of the first embodiment, a capacitance type switch is adopted as the operation switch 111 of the operation unit 100 (and the operation unit 150). And since the capacitance type switch operates in a non-contact manner and does not have a movable part, even when the heating cooker 1 is used for a long period of time, due to the sticking of the operation switch 111, poor contact, etc. The operation of the vessel 1 is not hindered. Further, if a capacitance type switch is adopted as the operation switch 111, the surface of the operation panel 110 can be made flat without any unevenness. For this reason, the appearance of the operation panel 110 can be greatly improved, and even if boiled juice or oily smoke adheres to the surface of the operation panel 110, it can be easily wiped and cleaned even after long-term use. The operation panel 110 can be kept beautiful.

  However, the capacitance type switch does not detect the capacitance when a conductive object (in this case, the operator's finger) approaches, but changes in capacitance due to the approach of the finger. Is detected. For this reason, it is necessary to supply power to the plurality of capacitance switches even while the operator's finger is not touching the symbol graphic 110g of the operation panel 110. Therefore, from the viewpoint of suppressing power consumption, the power supply is stopped while the movable case 101 of the operation unit 100 is in the state of being housed in the front surface of the housing 2 (hereinafter simply referred to as “immersion state”). In addition, it is desirable to restart the power supply when the movable case 101 protrudes from the front surface of the housing 2 (hereinafter simply referred to as a “protruding state”). The same applies not only to the movable case 101 of the operation unit 100 but also to the movable case 151 of the operation unit 150. Therefore, in the following description, it is assumed that the movable case 101 of the operation unit 100 is representative of the movable case 151 of the operation unit 150. Therefore, in the following description, the operation unit 100 can be read as the operation unit 150, and the movable case 101 can be read as the movable case 151.

  When the movable case 101 is in the immersive state, the power supply is stopped, and when the movable case 101 is in the protruding state, when the power supply is resumed, a switch for detecting whether the movable case 101 is in the immersive state or the protruding state Necessary. However, if the switch is a contact switch, there is a possibility that sticking or contact failure may occur, so that it is impossible to detect that the movable case 101 is in an immersive state, and the dry battery may be consumed. Alternatively, it may not be possible to detect that the movable case 101 is in the protruding state, and the power supply may not be resumed. As a result, the operation of the heating cooker 1 is hindered, and the purpose of adopting the electrostatic capacity type switch for the operation switch 111 of the operation panel 110 cannot be achieved. Therefore, the heating cooker 1 of the first embodiment has solved this problem by adding one capacitance type detection switch 114 as shown in FIG. Hereinafter, this point will be described in detail.

  FIG. 5 shows a cross-sectional view of the operation unit 100 of the first embodiment taken at the position AA in FIG. FIG. 5A shows an immersion state in which the movable case 101 of the operation unit 100 is housed in the front surface of the housing 2, and FIG. 5B shows a projecting state in which the movable case 101 is projected from the front surface of the housing 2. Represents. As shown in the figure, the lower end of the movable case 101 is pivotally supported on the housing 2 by a rotation shaft 101a. By rotating the movable case 101, the immersion state shown in FIG. It is possible to switch to the protruding state shown in (b). The operation panel 110 described above is mounted on the upper surface of the movable case 101, and a plurality of operation switches 111, an LED display 112, and a microcomputer 113 connected to them are mounted on the back side of the operation panel 110. ing.

  Further, a detection switch 114 is provided on the back side (right side in the drawing) of the movable case 101 when viewed from the front side of the housing 2, and the detection switch 114 is connected to the microcomputer 113 by a signal line 116. . In FIG. 5, the detection switch 114 is attached to the inside of the movable case 101, but may be attached to the outside of the movable case 101. In this specification, the movable case 101 is formed of a non-conductive material such as a resin. However, when the movable case 101 is formed of a conductive material such as a sheet metal, at least detection is performed. The part to which the switch 114 is attached needs to be formed of a nonconductive material.

  Further, on the housing 2 side, as shown in FIG. 5 (a), a detected portion formed of a conductive material such as a sheet metal at a position where the movable case 101 faces the detection switch 114 when it is immersed. 115 is provided. For this reason, while the movable case 101 is in the immersive state, the detected portion 115 is detected by the detection switch 114. However, as shown in FIG. 5B, when the movable case 101 is in a protruding state, the detection switch 114 moves from a position facing the detected portion 115, so that the detection switch 114 does not detect the detected portion 115. From this, the microcomputer 113 determines whether the movable case 101 is in an immersive state as shown in FIG. 5A or a protruding state as shown in FIG. 5B based on the output of the detection switch 114. can do. In this embodiment, the microcomputer 113 corresponds to the “state determination unit” in the present invention.

  And since the capacitance type switch is employ | adopted for the detection switch 114 similarly to the operation switch 111, the presence of the to-be-detected part 115 can be detected non-contactingly and there is no movable part. For this reason, even when the cooking device 1 is used for a long period of time, there is no possibility that the detection switch 114 is fixed or poor contact occurs. In addition, since both the detection switch 114 and the operation switch 111 are capacitive switches, the operation switch 111 only increases for the microcomputer 113 even if the detection switch 114 is added. In particular, if there is a surplus terminal on the microcomputer 113 side for connection to the operation switch 111, it is only necessary to connect the detection switch 114 to the surplus terminal. In addition, the detected portion 115 on the housing 2 side needs to be grounded, but if the housing 2 is grounded, the detected portion 115 may be simply attached to the housing 2. As described above, when the operation switch 111 mounted on the operation panel 110 is a capacitive switch, and the capacitive switch is further provided as the detection switch 114 in the movable case 101, the movable case 101 is It can be detected by an extremely simple configuration whether it is in an immersion state or a protruding state.

  Of course, when a capacitive switch is used as the detection switch 114, it is necessary to supply electric power to the detection switch 114 regardless of whether the movable case 101 is in the immersed state or the protruding state. However, if the state of the movable case 101 can be detected by the detection switch 114, power supply to the plurality of operation switches 111 and the LED display 112 mounted on the operation panel 110 is possible while the movable case 101 is in an immersive state. Can be stopped. Therefore, even when a capacitance type switch is used as the detection switch 114, it is possible to greatly reduce power consumption.

  The first embodiment described above has a plurality of modifications. Hereinafter, these modified examples will be briefly described.

  In the first embodiment described above, the detected portion 115 has been described as being formed as a separate component from the housing 2. However, if it is possible to detect with the detection switch 114 attached to the movable case 101, the detected part 115 does not need to be a separate part of the housing 2. Therefore, a part of the housing 2 may be the detected unit 115.

  FIG. 6 illustrates a plurality of modes of the operation unit 100 of the first modification example. Note that FIG. 6 shows a case where the movable case 101 is retracted, but for reference, the case where the movable case 101 is in a protruding state is also indicated by a broken line. First, the mode illustrated in FIG. 6A will be described. In the operation unit 100 of this mode, the detection switch 114 is attached to the bottom of the movable case 101. For this reason, as indicated by a solid line in the drawing, when the movable case 101 is in an immersive state, the detection switch 114 approaches a part of the housing 2 and the detection switch 114 detects the housing 2. Naturally, as shown by the broken line in the drawing, when the movable case 101 is in the protruding state, the detection switch 114 is moved away from the housing 2 and does not detect the housing 2. In such a case, a part of the housing 2 becomes the detected part 115.

  Of course, when the movable case 101 is in an immersive state, the housing 2 is not always present at a distance that can be detected by the detection switch 114. In such a case, as illustrated in FIG. 6B, the detected portion 115 may be formed by projecting a part of the housing 2 and bringing it close to a distance that can be detected by the detection switch 114. . Although FIG. 6 shows that the detection switch 114 is attached to the bottom of the movable case 101, the detection switch 114 can be attached to the side of the movable case 101.

  In the first embodiment or the first modification described above, the detection switch 114 is provided separately from the operation switch 111 provided on the operation panel 110. However, the operation switch 111 provided on the operation panel 110 can be used instead of the detection switch 114 as follows.

  FIG. 7 illustrates the operation unit 100 of the second modified example. 7 also shows the immersion state in which the movable case 101 is housed, as in FIG. 6, but for reference, the case where the movable case 101 is in the protruding state is also indicated by a broken line. As illustrated, the detection switch 114 is not attached to the movable case 101 of the second modification. Further, the detected part 115 is formed by extending a part of the casing 2 where the movable case 101 is accommodated. The detected portion 115 faces the operation switch 111 of the operation panel 110 when the movable case 101 is in an immersive state. In FIG. 7, it is displayed that a large detected part 115 is formed so as to face all the operation switches 111 provided on the operation panel 110. However, the detected part 115 includes at least two detected parts 115. It may be formed so as to face the operation switch 111. Then, power is supplied to at least two operation switches 111 that face the detected part 115 when the movable case 101 is in an immersive state while the movable case 101 is in an immersive state.

  In this way, if the movable case 101 is in an immersive state, the detected part 115 is detected by at least two operation switches 111 to which power is supplied, and when the movable case 101 is in a protruding state, those operation switches 111 are detected. Thus, the detected part 115 is not detected. Of course, when the movable case 101 is in the protruding state, the operation switch 111 may detect the operator's finger. However, as described above with reference to FIG. 3, since the operator does not touch a plurality of symbol figures 110g at the same time, it may be considered that two or more operation switches 111 do not detect a finger at the same time. For this reason, it is possible to detect whether the movable case 101 is in the immersive state or the protruding state based on whether or not at least two operation switches 111 are detecting the detected portion 115.

  Further, at least two operation switches 111 that supply power when the movable case 101 is in an immersion state are selected as operation switches 111 at positions sufficiently separated from each other, for example, by selecting from the operation switches 111 at both ends of the operation panel 110. Also good. In this way, when the movable case 101 is in the protruding state, it is possible to eliminate the possibility that the operator touches the symbol graphic 110g corresponding to these operation switches 111 by mistake. As a result, although the movable case 101 is in the protruding state, it is possible to reliably avoid erroneous detection as an immersive state.

  Further, when detecting whether or not the movable case 101 is in an immersive state based on whether or not at least two operation switches 111 detect the detected portion 115, the plurality of operation switches 111 are By paying attention to the order in which the detected portions 115 are detected, erroneous detection can be avoided more reliably.

  For example, the operation switch 111 that detects the detected portion 115 when the movable case 101 is in the immersive state is displayed with a symbol graphic 110g of “+” displayed in the right operation area 110R as shown in FIG. It is assumed that there are two switches 111 and an operation switch 111 on which a thermometer symbol graphic 110g is displayed. In this case, when the protruding movable case 101 is in an immersive state, first, the detected part 115 is detected by the operation switch 111 on which the symbol graphic 110g of “+” is displayed, and then the thermometer The detected portion 115 should be detected by the operation switch 111 of the symbol graphic 110g. Therefore, if the operation switch 111 detects the detected portion 115 in this order, it is possible to reliably prevent erroneous detection if it is determined that the movable case 101 is in an immersive state.

  Note that the plurality of operation switches 111 that detect the detected part 115 are not necessarily provided in the same row in the direction in which the movable case 101 is immersed. For example, as shown in FIG. 8B, instead of the operation switch 111 displaying the thermometer symbol graphic 110g in the right operation area 110R, the kettle symbol graphic 110g is displayed in the left operation area 110L. Even when the operation switch 111 is used, the above description is completely the same.

  Of course, the operation switch 111 for detecting the detected portion 115 when the movable case 101 is in the immersive state is the operation switch 111 on which the symbol graphic 110g of “+” is displayed in the right operation area 110R, and “−” next to the operation switch 111. If there are two operation switches 111 on which the symbol graphic 110g is displayed, it is determined that the movable case 101 is in an immersive state when these operation switches 111 simultaneously detect the detected portion 115. Just do it.

  In the example shown in FIG. 7, the detected part 115 is detected by the operation switch 111 while the movable case 101 is in the immersive state. Accordingly, the plurality of operation switches 111 (here, the operation switch 111 of the “+” figure in the right operation area 110R and the operation switch 111 of the thermometer figure) detect the detected portion 115 in this order, and When it is confirmed that the detection has been continued for a certain time (for example, 5 seconds), it may be determined that the movable case 101 is in an immersive state. In this way, it is possible to more reliably prevent erroneous detection that the movable case 101 is in an immersive state.

  In the above description, the case where it is detected that the movable case 101 in the protruding state is in the immersive state has been described. However, in the opposite case, that is, it is detected that the movable case 101 in the immersive state is in the protruding state. The same is true when doing so. For example, the operation switch 111 that detects the detected portion 115 in the immersion state is the operation switch 111 of the “+” symbol graphic 110g and the operation switch 111 of the thermometer symbol graphic 110g in the right operation area 110R. (See FIG. 8A). In this case, when the movable case 101 that has been in the immersive state is in the immersive state, first, the detected portion 115 is not detected by the operation switch 111 of the symbol figure 110g of the thermometer. The detected part 115 should not be detected by the operation switch 111 of the symbol graphic 110g. Accordingly, if the operation switch 111 no longer detects the detected portion 115 in this order, it is possible to reliably prevent erroneous detection if it is determined that the movable case 101 has changed from the immersive state to the protruding state.

  In the above description, the operation switch 111 on the operation panel 110 is arranged in two steps, one step below and one step below the LED display 112, as illustrated in FIG. As explained. In this case, the plurality of operation switches 111 that detect the detected part 115 when the movable case 101 is immersed are set to any one of the operation switches 111 arranged in two stages. Therefore, when the movable case 101 is in the immersive state, is the timing at which the operation switch 111 detects the detected part 115 early unless all the operation switches 111 detect the detected part 115 at the same time? Only two types of late timing can be taken.

  However, when the operation switches 111 are arranged in multiple stages of three or more stages, the operation switch 111 that detects the detected portion 115 at the intermediate timing is set in addition to the two types of early timing and late timing. be able to. If the plurality of operation switches 111 for detecting the detected part 115 are set in this way, it is more reliably detected that the movable case 101 is in an immersive state or a protruding state. It becomes possible.

  FIG. 9 illustrates the operation panel 110 of the third modified example. The arrangement of the operation switch 111 on the illustrated operation panel 110 is substantially the same as the arrangement of the operation switch 111 on the operation panel 110 illustrated in FIG. 3, but the third modification illustrated in FIG. 9A. In the operation panel 110, an operation switch 111 displaying an arrow symbol graphic 110g is added next to the LED display 112 in the right operation area 110R. Accordingly, in the operation panel 110 of FIG. 9A, the operation switch 111 provided in two stages below the LED display 112 is added to the operation switch 111 next to the LED display 112, and a total of three stages Therefore, the operation switch 111 is arranged. The operation switch 111 of the arrow symbol figure 110g is an operation switch 111 that is operated when canceling the operation performed immediately before.

  In such a third modification, for example, the operation switch 111 of the arrow symbol graphic 110g on the right side of the LED display 112 is used as the operation switch 111 for detecting the detected part 115 when the movable case 101 is in the immersive state. Then, the three operation switches 111 of the “+” symbol graphic 110g in the right operation region 110R and the operation switch 111 of the thermometer symbol graphic 110g are selected. In this way, when the projecting movable case 101 enters an immersive state, first, the detected portion 115 is detected by the operation switch 111 of the arrow symbol figure 110g, and then the “+” symbol. The detected portion 115 is detected by the operation switch 111 of the graphic 110g, and finally the detected portion 115 is detected by the operation switch 111 of the symbol graphic 110g of the thermometer. Accordingly, when the three operation switches 111 detect the detected part 115 in this order, if it is determined that the movable case 101 is in the immersive state, the fact that the movable case 101 has changed from the protruding state to the immersive state. It can be detected reliably.

  In addition, when the three operation switches 111 detect the detection target 115 in this way, the first operation switch 111 detects the detection target 115 and then the second operation switch 111 detects the detection target. Elapsed time (first elapsed time) until the part 115 is detected and until the third operation switch 111 detects the detected part 115 after the second operation switch 111 detects the detected part 115 It seems that there is a certain relationship with the elapsed time (second elapsed time). For example, when the user pushes the movable case 101 in a hurry, it is expected that the first elapsed time is shortened and the second elapsed time is also shortened accordingly. On the other hand, when the movable case 101 is automatically closed by lightly pushing the movable case 101 by the user, the first elapsed time is expected to be longer, and accordingly, the second elapsed time is also expected to be longer. Is done. Therefore, when the relationship between the first elapsed time and the second elapsed time satisfies a certain relationship (for example, when the ratio of the second elapsed time to the first elapsed time is within a predetermined range), the movable case. It may be determined that 101 has changed from a protruding state to an immersive state.

  In the above description, the case where it is detected that the movable case 101 in the protruding state is in the immersive state has been described, but the same applies to the case where it is detected that the movable case 101 in the immersive state is in the protruding state. Is true. That is, when the movable case 101 in the immersive state is in the protruding state, first, the detected portion 115 is not detected by the operation switch 111 of the symbol graphic 110g of the thermometer in the right operation region 110R, and then The detected part 115 is not detected by the operation switch 111 of the symbol graphic 110g of “+”, and finally, the detected part 115 is not detected by the operation switch 111 of the symbol figure 110g of the arrow. Accordingly, when the three operation switches 111 no longer detect the detected portion 115 in this order, the movable case 101 is in the protruding state if it is determined that the movable case 101 in the immersive state is in the protruding state. It is possible to reliably detect that

  At this time, after the first operation switch 111 (here, the operation switch 111 of the thermometer symbol graphic 110g) no longer detects the detected portion 115, the second operation switch 111 (here, “+ The elapsed time until the operation switch 111 of the symbol graphic 110g) no longer detects the detected portion 115 is “third elapsed time”, and after the second operation switch 111 detects the detected portion 115, 3 Assuming that the elapsed time until the first operation switch 111 (in this case, the operation switch 111 of the arrow symbol figure 110g) no longer detects the detected portion 115 is the “fourth elapsed time”, the third elapsed time and the fourth elapsed time There seems to be a certain relationship with time. Therefore, when the relationship between the third elapsed time and the fourth elapsed time satisfies a certain relationship (for example, when the ratio of the fourth elapsed time to the third elapsed time is within a predetermined range), the movable case. It may be determined that 101 has changed from the immersive state to the protruding state.

  In the first embodiment and the first to third modifications described above, the case 2 in which the movable case 101 is accommodated is described as being formed by a sheet metal member. However, it suffices if the detected portion 115 can be provided at a position facing the detection switch 114 when the movable case 101 is in an immersive state, and the casing 2 in which the movable case 101 is housed is necessarily formed of a sheet metal member. There is no.

  For example, in the fourth modified example of the first embodiment shown in FIGS. 10A and 10B, the casing 2 of the portion in which the movable case 101 is accommodated is formed of a non-conductive resin material. Yes. Even in such a case, a detected portion 115 made of a conductive material is provided at a position facing the detection switch 114 (or the operation switch 111 used instead of the detection switch 114), and the detected portion 115 is grounded. You just have to.

  In the above description, it is assumed that the movable case 101 rotates around the lower end side. However, the movable case 101 housed in the front surface of the housing 2 may be moved forward to enter the protruding state, and conversely, the movable case 101 may be pushed into the housing 2 to enter the immersed state. Hereinafter, such a second embodiment will be described.

  FIG. 11 is a perspective view illustrating a state in which the movable case 101 of the operation unit 100 of the second embodiment is protruded. In the second embodiment, when the front surface of the movable case 101 is lightly pushed in with the movable case 101 stored in the front surface of the housing 2 (see FIG. 1), the entire movable case 101 slides forward and the housing 2 The operation panel 110 housed inside appears. The operation panel 110 is the same as that of the first embodiment described above, and a description thereof will be omitted.

  FIG. 12 shows a cross-sectional view of the operation unit 100 of the second embodiment when the movable case 101 is in an immersive state. In the figure, as a reference, the case where the movable case 101 is in a protruding state is also indicated by a broken line. As shown in the figure, the movable case 101 is provided with a detection switch 114 on the back side (right side in the drawing) when viewed from the front side of the housing 2, and the detection switch 114 is connected to the microcomputer 113 by a signal line 116. Has been. In FIG. 12, the detection switch 114 is attached to the inside of the movable case 101, but may be attached to the outside of the movable case 101. In addition, a detection target 115 made of a conductive material such as a sheet metal is attached to the casing 2 at a position where the movable case 101 faces the detection switch 114 when the movable case 101 is in an immersive state. For this reason, while the movable case 101 is in the immersive state, the detection unit 115 is detected by the detection switch 114. However, when the movable case 101 is in the protruding state, the detection switch 114 moves away from the detection unit 115, and the detection switch 114 In 114, the detected part 115 is not detected. Accordingly, also in the second embodiment, based on the output of the detection switch 114, it can be detected whether the movable case 101 is in the immersion state or the protruding state.

  Also in the second embodiment described above, as the operation switch 111, a capacitance type switch is employed as the detection switch 114. For this reason, various advantages similar to those of the first embodiment can be obtained for the same reason as in the first embodiment.

  The second embodiment also has a plurality of modifications similar to those of the first embodiment described above. For example, the position where the detection switch 114 is attached is not limited to the back side of the movable case 101 and may be the bottom of the movable case 101. Alternatively, the operation switch 111 provided on the operation panel 110 may be used as the detection switch 114. FIG. 13 illustrates a plurality of modifications of these second embodiments. FIG. 13 also shows a case where the movable case 101 is in an immersive state, but the case where the movable case 101 is in a protruding state is also indicated by a broken line.

  For example, FIG. 13A illustrates a case where the detection switch 114 is attached to the bottom of the movable case 101. Even in such a case, if the detected part 115 is provided at a position facing the detection switch 114 in a state where the movable case 101 is in an immersive state, the state of the movable case 101 is detected based on the output of the detection switch 114. can do.

Alternatively, FIG. 13B illustrates a case where the operation switch 111 provided on the operation panel 110 is used as the detection switch 114. In the illustrated example, a part of the housing 2 that accommodates the movable case 101 is extended to form the detected portion 115.
The detected portion 115 faces the operation switch 111 of the operation panel 110 when the movable case 101 is in an immersive state. In this way, as in the second modification of the first embodiment described above with reference to FIG. 7, the movable case 101 is supplied by supplying power to at least two operation switches 111 facing the detected part 115 in the immersed state. It is possible to detect whether the is in an immersive state or a protruding state.

  While various embodiments and modifications have been described above, the present invention is not limited to the above embodiments, and can be implemented in various modes without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 1 ... Cooking device, 2 ... Housing, 3 ... Top plate, 100 ... Operation part,
101 ... movable case, 110 ... operation panel, 110g ... symbol figure,
110w ... transparent frame, 111 ... operation switch, 112 ... LED indicator,
113 ... Microcomputer, 114 ... Detection switch, 115 ... Detected part,
116: signal line, 150: operation unit, 151: movable case.

Claims (5)

A housing, and an operation portion provided with a plurality of operation switches on a movable frame that is provided on the front surface side of the housing and is movable from a front surface protruding from the front surface and a recessed state immersed in the front surface; When the movable frame is in the protruding state, the operation switch appears outside the casing and can be operated. When the movable frame is in the immersed state, the operation switch is housed inside the casing and cannot be operated. In
A drive circuit for driving a plurality of capacitance switches is mounted inside the movable frame or the housing,
The plurality of operation switches are the capacitive switches driven by the drive circuit,
When the movable frame is in the immersion state, the casing is made of a conductive material at a position that is provided on the movable frame and can be sensed by at least one of the capacitive switches driven by the drive circuit. A cooker characterized in that a formed detected part is provided. The heating cooker according to claim 1, wherein
The movable frame is provided with at least one capacitance type switch at a position on the back side in the moving direction when the movable frame changes from the protruding state to the immersive state.
The said to-be-detected part is a sheet metal member provided in the back | inner side of the part in which the said movable frame is accommodated seeing from the said front surface of the said housing facing this movable frame. The heating cooker characterized by the above-mentioned. The heating cooker according to claim 1, wherein
The movable frame is provided with at least one capacitance type switch at a position lateral to the moving direction of the movable frame,
The casing is formed of a sheet metal member, and the detected portion is formed by projecting a part of a surface facing the lateral side of the movable frame toward the movable frame. A heating cooker. The heating cooker according to claim 1, wherein
The detected portion is provided at a position that can be detected by at least two operation switches among the plurality of operation switches when the movable frame is in the immersion state.
A cooking device, comprising: a state determining unit that determines that the movable frame is in the immersion state when at least two of the operation switches detect the detected portion. The cooking device according to claim 4, wherein
The positional relationship between the at least two operation switches for detecting the detected portion and the detected portion when the movable frame is in an immersive state is such that the at least two operation switches move the detected portion at different timings. It is a positional relationship to detect,
The state determination unit determines that the movable frame is in the immersion state when at least two of the operation switches detect the detection unit in a predetermined order according to a positional relationship with the detection unit. A cooking device characterized by that.

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